JP2007174623A - COMMUNICATION DEVICE, COMMUNICATION METHOD, COMMUNICATION PROGRAM, RECORDING MEDIUM - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To establish communication connections in a short time. <P>SOLUTION: The communication apparatus includes at least two of: a first communication function for transmitting a connection request including a connection response request and a command or the like for connecting a plurality of communication layers; a second communication function for transmitting a connection request including the command or the like for connecting the communication layers but not including the connection response request; and a third communication function for transmitting a connection request including a command or the like for connecting each communication layer, also includes two of: a fourth communication function for transmitting a connection request including a command for requesting one response with respect to data transmitted dividedly on the packet basis; a fifth communication function for transmitting a connection request including a command not requesting a response with respect to the data transmitted dividedly on the packet basis; and a sixth communication function for transmitting a connection request including a command for requesting one response with respect to one packet, and selects one from the first to third communication functions and one from the fourth to the sixth communication functions according to a file form of transmission data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a communication device, a communication method, a communication program, and a recording medium that establish a connection and perform communication by radio or wire.

  In recent years, CCD (Charge Coupled Device) mounted on mobile devices such as mobile phones, digital cameras, digital video cameras, and PDAs (Personal Digital Assistants) has become high-quality, so that you can easily take beautiful digital images. It has become.

  As a method of sharing the video, there is a method of moving and displaying the video file by using a recording medium, sending it by e-mail, wired connection, wireless connection, etc., or printing and delivering it on paper.

  Among these, video files can be easily transferred from a portable device to other display devices, printing devices, recording devices, other portable devices, and electronic devices such as personal computers without the need for physical connection or medium replacement. One way to do this is by using wireless communication, especially infrared.

  Examples of the infrared communication system include IrDA (Infrared Data Association). For IrDA, for example, there are prior arts such as the following non-patent documents 1 to 5.

  Conventionally, communication methods such as IrDA and wireless LAN have defined the data link layer (link layer also means the same), transport layer, application layer, etc. in order to support flexible communication. Negotiations and retransmissions were performed. Furthermore, with regard to the negotiation for establishing connection in the conventional IrDA, it is assumed that there are many devices to be connected, and many sequences are required in order to attach importance to the equal connection of these devices. . Further, in the conventional IrDA, retransmission confirmation in the link layer or the MAC layer which is a part of the link layer is usually performed for each packet. A personal computer (PC) performs multiple transmissions. Most other devices use single transmission.

  Although these strict communication layer definitions are flexible to realize various applications, they require complicated procedures and consequently increase the overhead required for communication. In particular, complex connection procedures are associated with strict stratification, but cause increased communication overhead. In addition, retransmission confirmation for each packet is useful for improving the reliability of communication, but also causes a reduction in communication speed.

  The connection overhead is ignored when a long-time communication is performed, but becomes fatal when the time involved in data transfer is short. Strict retransmission also causes a reduction in communication efficiency. Especially in applications where people want to send data in an instant, the time for one operation (communication) can be shortened, and if communication fails, the person can send again. It may be better to This is a situation in which the user instructs the channel change command again when, for example, the television remote controller does not operate without receiving a channel change command by an infrared remote controller such as a television.

  There are many merits in the conventional type of strict layering, connection procedure for each layer, and retransmission for each packet. Therefore, more flexible communication can be realized by switching the communication procedure according to the communication status, application, user instruction, and the like.

  Hereinafter, the existing IrDA protocol will be described as a prior art.

  Infrared light used for infrared communication such as IrDA is directional, so if there is a shield between communication devices, data transfer is impossible, but if the visibility between communication devices is good, High-speed data transfer is possible.

  The IrDA standard includes Very FastIR (VFIR) with a maximum transfer rate of 16 Mbps, FastIR (FIR) with 4 Mbps, and SIR (Serial Infra Red) with 115.2 kbps. Currently on the market, the maximum transfer rate is up to 4 Mbps.

  FIG. 27 shows an outline of the procedure until the data transfer state is established in the IrDA standard which is one of the infrared communication standards. Here, establishment of a data transfer state means that data such as an image or a document desired to be transferred can be transferred.

  The primary station is a station that first searches for a communication partner, that is, a station that requests establishment of a data transfer state, and is a station that transmits a station discovery command (XID command). The secondary station is a station that accepts the request, and is a station that transmits a station discovery response (XID response) in response to a station discovery command. A request (command) from the primary station to the secondary station is called a command, and conversely, a response from the secondary station to the primary station for the command is called a response.

  The XID command is a command for searching for a station that can be a secondary station within a communicable distance from the primary station. SlotNumber represents how many commands are sent.

  The secondary station that has received the XID command returns an XID response, which is a station discovery response, and performs processing to notify the primary station of the presence of the own station. The primary station sends out a predetermined number of XID commands, and then sends out an XID command whose SlotNumber is 255. SlotNumber = 255 indicates that this is the last XID command.

  Subsequently, the primary station informs the secondary station of setting values necessary for communication such as a communication speed and a data size using an SNRM command. The secondary station that has received the command compares it with the setting value of its own station and informs the primary station of the acceptable setting value using the UA response.

  Further details are as follows.

  That is, in the IrDA standard, the number of XID command packets transmitted from the primary station is often selected from 1, 6, 8, and 15. Then, for example, as shown in FIG. 27, when transmitting eight XID command packets, SlotNumber is set to 0 to 7 for the first to eighth packets, and after eight XID commands are transmitted. Then, an XID command of 255, which has a slot number having an end meaning, is sent to notify the secondary station, which is the counterpart station, that the XID command has ended. That is, nine XID commands are required when the number is eight. Then, after a time of about 500 msec has passed after the last packet is transmitted, the XID command of the end from the first to the eighth is transmitted again. The transmission interval between packets is 25 to 85 milliseconds.

  The secondary station does not always return an XID response as soon as it receives an XID command, but returns an XID response after receiving a packet having an arbitrary (random value) SlotNumber. For example, when eight packets are sent, the secondary station can arbitrarily determine whether to return an XID response after receiving the first packet or to return an XID response after receiving the eighth packet. it can. As an example, FIG. 27 shows a case where an XID response is returned after receiving the fourth packet (SlotNumber = 3).

  Note that the IrDA standard stipulates that the XID command and XID response are performed at a transfer rate of 9600 bps in accordance with SIR. The transfer rate is very slow compared to 4 Mbps, which is a data frame transfer rate described later. Furthermore, since a plurality of XIDs as described above are transmitted, the response is not always returned immediately, and there is a blank period of 500 ms after sending 2 to 16 XIDs, the XID command And the time required for transmission / reception of the XID response becomes longer.

  Through the above procedure, the connection partner device is searched, and the data link layer is prepared for connection between the primary station and the secondary station.

  After this search, in the data link layer, the upper limit of the communication speed and packet size, the maximum time for which transmission rights can be held, the number of packets that can be transmitted continuously, a dummy inserted to stabilize optical characteristics at 115 kbps or 9600 bps The number of pulses, the minimum time that must be waited for transmission after receiving a packet from the other device, the time to disconnect when a set value cannot be received, or a connection that is uniquely distributed among devices An SNRM command and a UA response containing data necessary for setting parameters for data communication such as an address are exchanged, the connection of the data link layer is completed, and the data transfer state is established.

  After the data transfer state is established, connection establishment of a layer above the data link layer is performed. FIG. 27 shows a sequence in which connection establishment of the network layer, the transport layer, and the session layer is performed. These are after the connection has been established, and are all exchanged as data when viewed from the link layer (exchanged by an I frame described later).

  Conventionally, communication is possible at a speed of 4 Mbps in the IrDA high-speed communication mode, but the transmission / reception waveform is defined in the standard to be performed by the 4-value PPM method. FIG. 29 is a diagram showing the correlation between data pulses and data for the 4-level PPM method. 500 ns is divided into four times every 125 ns, and the data pulse represents 2-bit information depending on the time position. As shown in the figure, (1), (2), (3) and (4) indicate information of 00, 01, 10 and 11, respectively.

  In addition, the IrDA standard defines that communication is performed in units of frames. FIG. 30 is a diagram showing an IrDA standard frame. The IrDA standard frame includes a preamble field, a start flag, an address field, a control field, a data field, an FCS, and a stop flag. Among the above fields, the preamble field is used for generating a reception clock used by the reception side in the reception circuit. The FCS includes an error detection code and an error correction code for error detection.

  Based on this basic frame structure, various commands are actually determined as shown in FIG.

  The frame includes an I (Information) frame used for information transfer, an S (Supervisory) frame for communication monitoring control, and a U (Unnumbered) frame used for connection and disconnection in communication. Information for identifying these I, S, and U frames is included in the control field.

  Usually, since data to be transmitted cannot be transmitted in one frame in many cases, it is divided into a plurality of I frames and transmitted. The I frame has data to be transmitted in a data field, and has a serial number used for checking for missing data, thereby achieving highly reliable communication. The S frame does not have a data field for holding data, and is used to transmit reception ready, busy state, retransmission request, and the like. Since the U frame does not have a number like an I frame, it is called an unnumbered frame, and is used for setting a communication mode, reporting a response or an abnormal state, and establishing or disconnecting a data link.

  FIG. 31 is a sequence diagram for explaining a general procedure in the communication method. The station A requests the station B to establish a data transfer state and transmits an SNRM frame. Upon receiving this, the B station returns a DM frame when communication is impossible, and returns a UA frame indicating consent when communication is possible. The SNRM frame, DM frame, and UA frame are all U frames. When station B returns a UA frame, both stations establish a data transfer state and data transfer is possible.

  Here, a case where data divided into a plurality of I frames is transmitted from station A to station B is shown. First, station A transmits an I frame to which the number “0” is assigned as the first data frame. Upon receiving this, the B station returns a response frame (data transfer request frame) to which the number “1” next to “0” is given, and transmits the meaning of “send the first data”. The response frame is an S frame called an RR frame. The A station confirms the response frame of the B station and transmits an I frame including the first divided data. By repeating this procedure as many times as necessary, communication accuracy in a plurality of I frame communications can be improved.

In addition, a transfer method in which the station A continuously transmits a plurality of I frames is also possible. In this case, when transmission of all I frames is completed, station A attempts to terminate communication connection, and transmits a DISC frame indicating a disconnection request to station B, which is a U frame. Then, when the B station returns a UA frame indicating acceptance, the disconnection is performed and the communication connection is disconnected. Also, if there is a problem such as a communication error in any station, the station disconnects the communication connection by issuing a disconnection request.
Infrared Data Association Serial Infrared Link Access Protocol (IrLAP) Version 1.1 (June 16, 1996) Infrared Data Association Serial Infrared Physical Layer Specification Version 1.4 (May 30, 2003) Infrared Data Association Link Management Protocol (IrLMP) Version 1.1 (June 23, 1996) Infrared Data Association 'Tiny TP': A Flow-Control Mechanism for use with IrLMP Version 1.1 (Oct 20, 1996) Infrared Data Association Object Exchange Protocol (OBEX) Version 1.3 (Jan 3,2003) Special table 2004-509527 gazette (publication date: March 25, 2004) JP 2000-69403 A (publication date: March 3, 2000), JP 2001-83948 A (publication date: March 30, 2001)

  In IrDA, wireless communication is performed by the method as described above. However, due to the characteristics of light, the infrared interface between communication devices is at a certain angle (± 15 ° in IrDA standard) or a certain distance (standard in IrDA standard). If the distance becomes 20 cm or 1 m) or more, even if a highly reliable communication method is possessed, communication cannot be performed midway.

  And, according to the IrDA method, it takes time for station discovery and information exchange, and it is frequently confirmed that data is transmitted and received between the transmitter and the receiver during data transfer. Transfer efficiency decreases. As a result, the IrDA infrared communication has a problem that the transfer time becomes long and the probability that the communication cannot be performed halfway increases.

  As a method for wirelessly transmitting and displaying a file to another device, for example, the methods described in Patent Documents 1 to 3 above are described. However, even in this method, the same problem occurs when communication is performed using infrared rays. Will occur.

  The present invention has been made in view of the above problems, and an object thereof is to provide a communication device, a communication method, a communication program, and a recording medium that can establish a connection in a short time.

  In order to solve the above-described problem, the communication device according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection between a plurality of adjacent communication layers, and transmits the first request. Function (corresponding to “communication function 1” in the embodiment), a second communication that includes a command and data necessary for connection of a plurality of adjacent communication layers, generates a connection request that does not include a connection response request, and transmits the connection request Function (corresponding to “communication function 2” in the embodiment) and a third communication function for generating and transmitting a connection request including a command and data necessary for connection for each communication layer (“communication function in the embodiment”) 3 ”), a first communication control means for selecting one of the communication functions, and dividing into a plurality of packets continuously. A fourth communication function (corresponding to “communication function 4” in the embodiment) for generating and transmitting a connection request including a command for requesting one response to the received data, continuously divided into a plurality of packets A fifth communication function (corresponding to “communication function 5” in the embodiment) that generates and transmits a connection request including a command that does not request a response to the transmitted data, and one packet, It includes at least any two of the sixth communication functions (corresponding to “communication function 6” in the embodiment) for generating and transmitting a connection request including a command for requesting one response. A second communication control means for selecting one of the communication functions, and the first communication control means and the second communication control means select the communication function according to the file format of the data to be transmitted. It is characterized in that the.

  Furthermore, in the communication device according to the present invention, when the file format is a multimedia-related file, the first communication control unit and the second communication control unit are configured to perform the second communication function and the fifth communication unit. It is characterized by selecting at least one of the communication functions.

  Furthermore, the communication apparatus according to the present invention is characterized in that the first communication control means and the second communication control means determine a communication function to be used according to an application that performs data transmission.

  Furthermore, in the communication device according to the present invention, when the application is a slide show, the first communication control means and the second communication control means are at least one of the second communication function and the fifth communication function. It is characterized by selecting one.

  In addition, the communication method according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, and transmits the first communication function (“ Equivalent to the communication function 1), a second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, and transmits the connection request (“ Communication function 2 ”) and a third communication function (corresponding to“ communication function 3 ”in the embodiment) that generates and transmits a connection request including a command and data necessary for connection for each communication layer. A connection request including a command for requesting one response to data that is continuously transmitted by being divided into a plurality of packets and having at least any two of them is transmitted. Communication function 4 (corresponding to “communication function 4” in the embodiment), a connection request including a command that does not require a response to data that is continuously transmitted after being divided into a plurality of packets is generated and transmitted. Communication function (corresponding to “communication function 5” in the embodiment), and a sixth communication function (implementation) that generates and transmits a connection request including a command for requesting one response to one packet. Is equivalent to the “communication function 6” of the embodiment), and is a communication method in a communication device including at least any two of the first to third communication functions according to the file format of data to be transmitted. One is selected from the communication functions provided in the home, and one of the communication functions provided in the fourth to sixth communication functions is selected according to the file format of the data to be transmitted. .

  The communication apparatus according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection between a plurality of adjacent communication layers, and transmits the first communication function (“ Equivalent to the communication function 1), a second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, and transmits the connection request (“ Communication function 2 ”) and a third communication function (corresponding to“ communication function 3 ”in the embodiment) that generates and transmits a connection request including a command and data necessary for connection for each communication layer. A first communication control means for selecting at least one of the two communication functions and selecting one of the communication functions, and dividing the data into a plurality of packets and transmitting the data continuously A fourth communication function (corresponding to “communication function 4” in the embodiment) that generates and transmits a connection request including a command for requesting one response, and continuously transmits data that is divided into a plurality of packets. A connection request including a command that does not require a response is generated and a fifth communication function (corresponding to “communication function 5” in the embodiment) for transmitting and one response is requested for one packet. At least any two of the sixth communication functions (corresponding to “communication function 6” in the embodiment) for generating and transmitting a connection request including a command are provided, and one of the communication functions provided. A second communication control means for selecting, wherein the first communication control means and the second communication control means send an identification signal to the counterpart device to make a communication request, and then receive the received response. Based on the identification signal, to determine the communication functions of the partner device, it is characterized in that for selecting a communication function of the same type as the communication functions of the remote device.

  Furthermore, the communication apparatus according to the present invention is characterized in that the identification signal is a tone signal.

  Furthermore, the communication apparatus according to the present invention is characterized in that the identification signal is a packet for connection by the first communication function.

  Further, in the communication device according to the present invention, when the response identification signal is not returned, the first communication control means and the second communication control means have the third communication function and the sixth communication. It is characterized by selecting a function.

  In addition, the communication method according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, and transmits the first communication function (“ Equivalent to the communication function 1), a second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, and transmits the connection request (“ Communication function 2 ”) and a third communication function (corresponding to“ communication function 3 ”in the embodiment) that generates and transmits a connection request including a command and data necessary for connection for each communication layer. A connection request including a command for requesting one response to data that is continuously transmitted by being divided into a plurality of packets and having at least any two of them is transmitted. Communication function 4 (corresponding to “communication function 4” in the embodiment), a connection request including a command that does not require a response to data that is continuously transmitted after being divided into a plurality of packets is generated and transmitted. Communication function (corresponding to “communication function 5” in the embodiment), and a sixth communication function (implementation) that generates and transmits a connection request including a command for requesting one response to one packet. In the communication apparatus having at least any two of the “communication function 6” in the form), transmitting an identification signal to the counterpart device to make a communication request, and then receiving the received response identification Whether the communication function included in the first to third communication functions is determined so as to determine the communication function included in the counterpart device based on the signal and select the same type of communication function as the communication function included in the counterpart device. Choose one, and is characterized in that selects one communication function provided among the fourth to sixth communication functions.

  In addition, the communication device according to the present invention receives a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracts the command and data from the connection request, and sends a connection response. A first communication function (corresponding to “communication function 1” in the embodiment) for establishing a connection of each communication layer based on the command, a command and data necessary for connection of a plurality of adjacent communication layers, A second communication function that receives a connection request that does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command (“communication function 2” in the embodiment) Equivalent), and a connection request including a command and data necessary for connection for each communication layer is received, and a command and a command are received from the connection request for each communication layer. It has at least any two of third communication functions (corresponding to “communication function 3” in the embodiment) for extracting data and establishing connection of each communication layer based on the command, and A fourth communication function that includes a first communication control unit that selects one of the communication functions, and that transmits one response to data that is continuously received after being divided into a plurality of packets; "Corresponding to" communication function 4 "), a fifth communication function (corresponding to" communication function 5 "in the embodiment) that does not transmit a response to data that is divided into a plurality of packets and continuously received, and 1 Provide at least any two of the sixth communication functions (corresponding to “communication function 6” in the embodiment) for transmitting one response to one packet, and select one from the provided communication functions 2nd through Control means, wherein the first communication control means and the second communication control means transmit a response identification signal corresponding to the communication function of the own device to the identification signal received from the counterpart device. It is characterized by being.

  Further, the communication method according to the present invention receives a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracts the command and data from the connection request, and sends a connection response. A first communication function (corresponding to “communication function 1” in the embodiment) for establishing a connection of each communication layer based on the command, a command and data necessary for connection of a plurality of adjacent communication layers, A second communication function that receives a connection request that does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command (“communication function 2” in the embodiment) Equivalent), and a connection request including a command and data necessary for connection for each communication layer is received, and a command and a command are received from the connection request for each communication layer. Including at least any two of third communication functions (corresponding to “communication function 3” in the embodiment) for extracting data and establishing a connection of each communication layer based on the command; and A fourth communication function (corresponding to “communication function 4” in the embodiment) for transmitting one response to data continuously received after being divided into a plurality of packets; continuously divided into a plurality of packets; A fifth communication function that does not transmit a response to received data (corresponding to “communication function 5” in the embodiment), and a sixth communication function that transmits one response to one packet (embodiment) , Corresponding to the communication function of the own device with respect to the identification signal received from the counterpart device. Identification It is characterized by sending a.

  In addition, the communication device according to the present invention receives a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracts the command and data from the connection request, and sends a connection response. A first communication function (corresponding to “communication function 1” in the embodiment) for establishing a connection of each communication layer based on the command, a command and data necessary for connection of a plurality of adjacent communication layers, A second communication function that receives a connection request that does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command (“communication function 2” in the embodiment) Equivalent), and a third communication function that transmits one response to data received continuously after being divided into a plurality of packets ("communication function 4" in the embodiment) And a determination means for determining the status of a communication error during data reception, and when there is a communication error, depending on the status of the communication error, It is characterized by changing the operation.

  Furthermore, the communication apparatus according to the present invention is characterized in that the operation to be changed is at least one of an error cause and a coping method notified to the user.

  Furthermore, the communication apparatus according to the present invention is characterized in that, when an error is detected even though all the frames have arrived, the user is notified of information that prompts the communication distance to be shortened.

  Furthermore, the communication apparatus according to the present invention is characterized in that when an error is detected without being received from the middle of a frame, the user is notified that the transmitter is directed in a different direction during the communication.

  Further, the communication method according to the present invention receives a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracts the command and data from the connection request, and sends a connection response. A first communication function (corresponding to “communication function 1” in the embodiment) for establishing a connection of each communication layer based on the command, a command and data necessary for connection of a plurality of adjacent communication layers, A second communication function that receives a connection request that does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command (“communication function 2” in the embodiment) Equivalent), and a third communication function that transmits one response to data received continuously after being divided into a plurality of packets ("communication function 4" in the embodiment) Communication method in a communication device equipped with at least one of the above, and when there is a communication error during data reception, the communication error status is determined and communication is performed according to the communication error status. It is characterized by changing the operation after an error.

  The communication apparatus according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection between a plurality of adjacent communication layers, and transmits the first communication function (“ Equivalent to the communication function 1), a second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, and transmits the connection request (“ Communication function 2 ”), and a third communication function for generating and transmitting a connection request including a command for requesting one response to data transmitted continuously after being divided into a plurality of packets ( (Corresponding to “communication function 4” in the embodiment), and conversion means for converting the data size of the file to be transmitted in accordance with the capability of the counterpart device. It is characterized.

  The communication apparatus according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection between a plurality of adjacent communication layers, and transmits the first communication function (“ Equivalent to the communication function 1), a second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, and transmits the connection request (“ Communication function 2 ”), and a third communication function for generating and transmitting a connection request including a command for requesting one response to data transmitted continuously after being divided into a plurality of packets ( (Corresponding to “communication function 4” in the embodiment), and at least one of them is provided, and communication is performed by infrared rays.

  The communication apparatus according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection between a plurality of adjacent communication layers, and transmits the first communication function (“ Equivalent to the communication function 1), a second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, and transmits the connection request (“ Communication function 2 ”), and a third communication function for generating and transmitting a connection request including a command for requesting one response to data transmitted continuously after being divided into a plurality of packets ( Of the embodiment (corresponding to “communication function 4”), and the captured image data is transmitted by any one of the communication functions described above.

  In addition, the communication device according to the present invention receives a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracts the command and data from the connection request, and sends a connection response. A first communication function (corresponding to “communication function 1” in the embodiment) for establishing a connection of each communication layer based on the command, a command and data necessary for connection of a plurality of adjacent communication layers, A second communication function that receives a connection request that does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command (“communication function 2” in the embodiment) Equivalent), and a third communication function that transmits one response to data received continuously after being divided into a plurality of packets ("communication function 4" in the embodiment) Of equivalent), provided with a least any one, communication is characterized by performing the infrared.

  In addition, the communication device according to the present invention receives a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracts the command and data from the connection request, and sends a connection response. A first communication function (corresponding to “communication function 1” in the embodiment) for establishing a connection of each communication layer based on the command, a command and data necessary for connection of a plurality of adjacent communication layers, A second communication function that receives a connection request that does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command (“communication function 2” in the embodiment) Equivalent), and a third communication function that transmits one response to data received continuously after being divided into a plurality of packets ("communication function 4" in the embodiment) Of equivalent), provided with a least any one, it said by any of the communication function, and characterized in that for receiving a broadcast.

  Note that the communication device may be realized by a computer. In this case, a communication program for causing the communication device to be realized by the computer by operating the computer, and a computer-readable recording medium recording the communication program are also provided. Falls within the scope of the present invention.

  As described above, the communication apparatus according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection between a plurality of adjacent communication layers, and transmits the first communication function (implementation). 2nd communication function (implementation equivalent to “communication function 1”) that generates and transmits a connection request that includes commands and data necessary for connection of a plurality of adjacent communication layers and does not include a connection response request Equivalent to “communication function 2” in the form) and a third communication function (for example, “communication function 3” in the embodiment) that generates and transmits a connection request including a command and data necessary for connection for each communication layer. The first communication control means for selecting one of the communication functions, and the data transmitted continuously divided into a plurality of packets. A fourth communication function (corresponding to “communication function 4” in the embodiment) for generating and transmitting a connection request including a command for requesting one response to a plurality of packets is transmitted continuously. A fifth communication function (corresponding to “communication function 5” in the embodiment) that generates and transmits a connection request including a command that does not request a response to the received data, and one response to one packet A connection request including a command for requesting and transmitting, and including at least any two of the sixth communication functions (corresponding to “communication function 6” in the embodiment), and from the communication functions provided A second communication control means for selecting one, and the first communication control means and the second communication control means select a communication function according to a file format of data to be transmitted. That.

  The communication apparatus according to the present invention generates a connection request including a command, data, and a connection response request necessary for connection between a plurality of adjacent communication layers, and transmits the first communication function (“ Equivalent to the communication function 1), a second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, and transmits the connection request (“ Communication function 2 ”) and a third communication function (corresponding to“ communication function 3 ”in the embodiment) that generates and transmits a connection request including a command and data necessary for connection for each communication layer. A first communication control means for selecting at least one of the two communication functions and selecting one of the communication functions, and dividing the data into a plurality of packets and transmitting the data continuously A fourth communication function (corresponding to “communication function 4” in the embodiment) that generates and transmits a connection request including a command for requesting one response, and continuously transmits data that is divided into a plurality of packets. A connection request including a command that does not require a response is generated and a fifth communication function (corresponding to “communication function 5” in the embodiment) for transmitting and one response is requested for one packet. At least any two of the sixth communication functions (corresponding to “communication function 6” in the embodiment) for generating and transmitting a connection request including a command are provided, and one of the communication functions provided. A second communication control means for selecting, wherein the first communication control means and the second communication control means send an identification signal to the counterpart device to make a communication request, and then receive the received response. Based on the identification signal, to determine the communication functions of the partner device, it is configured to select the communication functions of the same type as the communication functions of the remote device.

  In addition, the communication device according to the present invention receives a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracts the command and data from the connection request, and sends a connection response. A first communication function (corresponding to “communication function 1” in the embodiment) for establishing a connection of each communication layer based on the command, a command and data necessary for connection of a plurality of adjacent communication layers, A second communication function that receives a connection request that does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command (“communication function 2” in the embodiment) Equivalent), and a connection request including a command and data necessary for connection for each communication layer is received, and a command and a command are received from the connection request for each communication layer. It has at least any two of third communication functions (corresponding to “communication function 3” in the embodiment) for extracting data and establishing connection of each communication layer based on the command, and A fourth communication function that includes a first communication control unit that selects one of the communication functions, and that transmits one response to data that is continuously received after being divided into a plurality of packets; "Corresponding to" communication function 4 "), a fifth communication function (corresponding to" communication function 5 "in the embodiment) that does not transmit a response to data that is divided into a plurality of packets and continuously received, and 1 Provide at least any two of the sixth communication functions (corresponding to “communication function 6” in the embodiment) for transmitting one response to one packet, and select one from the provided communication functions 2nd through Control means, wherein the first communication control means and the second communication control means are configured to transmit a response identification signal corresponding to a communication function provided in the own device in response to the identification signal received from the counterpart device. is there.

  In addition, the communication device according to the present invention receives a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracts the command and data from the connection request, and sends a connection response. A first communication function (corresponding to “communication function 1” in the embodiment) for establishing a connection of each communication layer based on the command, a command and data necessary for connection of a plurality of adjacent communication layers, A second communication function that receives a connection request that does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command (“communication function 2” in the embodiment) Equivalent), and a third communication function that transmits one response to data received continuously after being divided into a plurality of packets ("communication function 4" in the embodiment) And a determination means for determining the status of a communication error during data reception, and when there is a communication error, depending on the status of the communication error, This is a configuration for changing the operation.

  Therefore, communication connection can be established in a short time.

  The embodiment of the present invention will be described as follows. In the following embodiments, a transfer method (transmission method) for transferring data using infrared rays will be described as an example. However, the present invention is not limited to this, and for example, optical transmission using light other than infrared rays may be used. It can also be applied to other wireless communication systems.

  In this specification, communication function 1 to communication function 9 are used in the following meaning. Communication function 1 is a shortened connection sequence (with response). Communication function 2 is a shortened connection sequence (no response). The communication function 3 has a conventional connection sequence (for example, IrDA). The communication function 4 has a small number of packet retransmission processes (response is present). The communication function 5 has a small number of packet retransmission processes (no response). The communication function 6 is a conventional packet transmission method (for example, IrDA). The communication function 7 includes both the communication function 1 and the communication function 4. The communication function 8 includes both the communication function 2 and the communication function 5. The communication function 9 includes both the communication function 3 and the communication function 6.

[Embodiment 1]
Embodiment 1 of the present invention will be described with reference to FIGS.

  As shown in FIG. 2, the data transfer system according to the present embodiment includes a mobile device as a first device such as a mobile phone and an electronic device as a second device such as a display device. While selecting an arbitrary file such as video file, image data, program information and document data (hereinafter simply referred to as “data”) recorded in the file and transmitting it to the infrared interface of the electronic device, the electronic device Receives the received data. The electronic apparatus is not limited to a display device, and for example, a printing device shown in FIG. 3, a DVD (Digital Video Disk) recorder, a CD (Compact Disk) recorder, and an HDD (Hard Disk Drive) shown in FIG. The present invention can also be applied to a recording device such as a recorder or a video deck, a personal computer shown in FIG. 5, and a portable device such as a mobile phone having another recording medium shown in FIG. In the present embodiment, the first device is a portable device such as a mobile phone. However, the first device is not limited to this, and the first device also includes a recording medium such as a display device, a printing device, a recording device, and a personal computer. It can be an electronic device.

  The portable device and the electronic device described above include a transmission device for performing data transmission. As illustrated in FIG. 7, the transmission device 1 includes a CPU 11, a memory 12, a controller 13, and a wireless communication interface. The transmission part 14 is provided.

  The CPU 11 performs predetermined arithmetic processing in accordance with a user instruction input to an operation unit (not shown). The predetermined calculation process includes a transfer data transfer process. When receiving the transfer data transfer instruction from the operation unit, the CPU 11 stores the transfer data to be transferred in the memory 12 and issues a transfer request to the controller 13. When the CPU 11 receives a transmission end notification indicating the end of transmission of transfer data from the controller 13, the CPU 11 completes the transfer process.

  The memory 12 primarily stores transfer data to be transferred, and the transfer data is written by the CPU 11. In the present embodiment, the memory 12 has a function as a storage unit that stores programs and data for realizing various communication functions. Here, the various communication functions refer to the following communication functions 1 to 8.

(1) Communication function 1 and communication function 2 having a procedure for performing search and data link layer connection and upper layer connection simultaneously at the start of communication
(2) Communication function 4 and communication function 5 for returning a response to a packet of higher layer data that is continuously transmitted after being divided into a plurality of packets
(3) Communication function 7 or communication function 8 having both functions of communication function 1 and communication function 4 or communication function 2 and communication function 5
Next, the controller 13 controls transfer of transfer data in response to a transfer request from the CPU 11, and includes a control unit 131, a data packet generation unit 132, and an error detection / correction code addition unit 133.

  Upon receiving a transfer request from the CPU 11, the control unit 131 reads transfer data from the memory 12, sends the read transfer data to the data packet generation unit 132, and causes the data packet generation unit 132 to generate a plurality of data packets. . At this time, the control unit 131 controls the packet length and packet interval generated by the data packet generation unit 132. The control unit 131 controls the packet length to be equal to or less than the maximum packet length obtained from the data capacity that can be detected by an error detection / correction code adding unit 133 described later.

  In addition, the control unit 131 detects that all data packets corresponding to the transfer data read from the memory 12 have been transmitted from the transmission unit 14, and transmits a transmission end notification indicating that the transmission of the transfer data has ended. Send to.

  The data packet generator 132 divides the transfer data received from the controller 131 to generate a plurality of data packets. At this time, the data packet generation unit 132 divides the transfer data so as to have the packet length received from the control unit 131, and generates divided data (1)... (N). Then, the data packet generator 132 generates a data packet including each piece of divided data as information. That is, the data packet generation unit 132 generates a data packet (1) including the divided data (1), ..., a data packet (N) including the divided data (N). Note that the transfer rate of the data packet generated by the data packet generation unit 132 is controlled by the control unit 131.

  The data packet generation unit 132 sends the generated packets to the error detection / correction code addition unit 133. At this time, the data packet generation unit 132 sets the time interval between the data packets to be the packet interval received from the control unit 131.

  Here, as shown in FIG. 30, each data packet includes a preamble field, a start flag, an address field, a control field, a data field, an FCS, and a stop flag.

  The error detection / correction code adding unit 133 adds an error detection code or a correction code to the data packet generated by the data packet generating unit 132 and sends the data packet to the subsequent transmission unit 14. The error detection / correction code adding unit 133 includes the error detection code or the correction code in the FCS in the data packet.

  The error detection code (see Non-Patent Documents 1 and 2) is, for example, a cyclic code such as a CRC (Cyclic Redundancy Check) code, and the correction code is, for example, a parity check code, a Hamming code, a Reed-Solomon code, or the like. The BCH code or the like. Note that the CRC code has a predetermined length, and the length of the data that can detect an error is limited. Specifically, the CRC code has a length of 16 bits, 32 bits, etc., and if it is 16 bits, for example, if it is 16 bits, 100% of an error of 1 bit in data up to 2048 bytes is detected. be able to.

  The transmission unit 14 transmits a plurality of packets received from the controller 13 to the outside at predetermined time intervals via the infrared communication path.

  Next, the electronic device of the present embodiment includes a receiving device for receiving data, and the receiving device 2 will be described with reference to FIG.

  As shown in the figure, the receiving device 2 includes a CPU 21, a memory 22, a controller 23, a CDR 24, and a receiving unit 25 as a wireless communication interface.

  The receiving unit 25 receives the packet transmitted from the transmitting device 1 via the infrared communication path, and sends the received packet to the CDR 24.

  The CDR 24 extracts (recovers) a clock signal and a data signal from the received signal based on the received packet. The CDR 24 sends the recovered clock signal and data signal to the controller 23.

  The controller 23 performs predetermined control processing based on the packet received from the CDR 24. The controller 23 includes a control unit 231, a packet processing unit 232, and an error detection / correction circuit 233.

  The packet processing unit 232 receives the packet recovered by the CDR 24 and detects a start flag and a stop flag from the received packet. Then, the packet processing unit 232 extracts the data field and the FCS part. That is, the packet processing unit 232 extracts information included in the data field of the packet received by the receiving unit 25 and an error detection code or correction code for the information. The packet processing unit 232 sends the extracted information and the error detection code or correction code to the control unit 231 and the error detection / correction circuit 233.

  For example, when receiving the data packet, the packet processing unit 232 extracts the data included in the data packet and the error detection code or correction code, and the extracted data and the error detection code or correction code are transmitted to the control unit 231 and the error code. This is sent to the detection / correction circuit 233.

  The error detection / correction circuit 233 performs error detection or correction on the received information and sends the result to the control unit 231.

  The control unit 231 performs predetermined processing according to the result sent from the error detection and correction circuit 233. That is, when the result from the error detection and correction circuit 233 indicates that there is no error (error) in the divided data, the control unit 231 writes the data into the memory 22 and notifies the CPU 21 of reception completion. On the other hand, when the result from the error detection and correction circuit 233 indicates that there is an error in the data, the control unit 231 discards the data and notifies the CPU 21 that there is a reception error.

  The memory 22 stores data received by the receiving unit 25, and data is written by the control unit 231. Further, in this embodiment, it has a function as a storage means for storing programs and data for realizing various communication functions. The various communication functions are the same as the transmission device 1, at least one of the communication functions 1 and 2 and the communication function 3, or at least one of the communication functions 4 and 5 and the communication function 6, or At least one of the communication functions 7 and 8 and the communication function 9. The communication functions 3, 6, and 9 are based on the IrDA protocol as described above.

  The CPU 21 displays an image corresponding to the generated image data, for example, on a display unit (not shown) based on the data written in the memory 22.

  Next, data transfer processing between the transmitting device 1 and the receiving device 2 will be described with reference to the sequence diagrams shown in FIGS. 1 (a) and 1 (b).

  First, when performing infrared communication between the transmission device 1 and the reception device 2, in the IrDA protocol as the communication function 3, as shown in FIG. Exchange is performed.

  However, due to the characteristics of infrared communication, the receiving device 2 that is a partner communicating with the transmitting device 1 that is held in hand is within a range that is visible to the user.

  Therefore, in the present embodiment, as shown in FIG. 1B, instead of exchanging packets of the XID command / response which is a station discovery command, the user recognizes a receiving device and performs a transmission operation. An electronic device that is a counterpart device that communicates with the transmission device 1 that is a portable device can be determined. That is, by using the communication function 1 that performs the same packet search for the counterpart device and the exchange of commands necessary for connection with the counterpart device at the start of communication, packet exchange of the station discovery command can be omitted. The time required for file communication can be reduced. Specifically, since the time required for station discovery by the IrDA protocol is usually about 3 to 4 seconds, the overall time required for file communication can be reduced accordingly.

  On the other hand, in the IrDA protocol, at the start of communication, as shown in FIG. 1A and FIG. 27, for example, the ability of the counterpart device to perform various communication such as communication that transmits and receives data bidirectionally such as IrCOMM and IrFM. For example, using SNRM commands / responses such as usable communication speed, maximum turnaround time, data size per frame, window size, amount of additional BOF, minimum turnaround time, link disconnect / threshold time, etc. Will be replaced.

  However, when only sending a file as in this embodiment, parameters necessary for sending the file can be determined in advance.

  Specifically, the data size per frame, the maximum / minimum turnaround time, etc. are determined in advance. As a result, the primary station outputs a declared connect command describing only the parameter to be changed from a predetermined value, and recognizes that it is a predetermined value when it is not described on the secondary station side. Then, it returns a response that describes the parameters negotiated with the parameters of the local station. If the secondary station is the same as the predetermined value, the parameter need not be described in the response. If the primary station is not described in the received response, the primary station recognizes it as a predetermined value and can communicate with the parameter.

  Further, for example, the primary station side outputs a connection command including a parameter that does not require a response from the secondary station side. The secondary station that has received the connection command does not return a command response, prepares to accept data with the declared parameters, and then the primary station outputs the data. Thereby, the procedure can be further shortened.

  In order to further shorten the procedure, it is possible to adopt a method in which all items are determined in advance and data communication is started without transmitting a connect packet from the primary station. In the IrDA protocol, this information exchange etc. is performed several to dozens of times, and it takes about 1 to 2 seconds. By omitting the device information to be exchanged, one or two packets can be exchanged, and this time can be suppressed to about 100 ms.

  Even if the application parameters are not determined, it can be realized by sending the application parameters simultaneously with the connection packet. In FIG. 11 (a), the connection parameters of the data link layer are followed by the parameters above the data link layer, and then sent to the upper layer (network layer, transport layer, session layer, etc.) with one round-trip connection. An example of connection is shown. An example of the connection packet is described in FIG.

  In this way, the device information to be exchanged is omitted, that is, only the minimum connection parameters and whether or not a response is necessary at the start of communication are exchanged, and other parameters use fixed values in advance, or data link layer By including the upper layer connection parameters at the same time as the connection request, as shown in FIG. 1B, the overall time required for file communication can be further shortened.

  In addition, in the IrDA protocol, as shown in FIG. 9A, after the primary station sends a data frame (I frame), the secondary station performs an operation of returning a response to the data integrity. (Send and receive data without errors).

  However, in the case of communication from a hand-held device such as a portable device, no matter how the integrity protocol is implemented, the angle between the devices becomes more than a certain angle, or the distance is more than a certain distance If it becomes a distance, communication becomes difficult. As a result, error data increases and the secondary station frequently makes retransmission requests to the primary station, and the primary station frequently makes retransmissions in response thereto. As a result, the time required for packet exchange increases.

  On the other hand, in the present embodiment, the communication function 4 or the communication function 5 is adopted so that the data retransmission processing is not performed or the number of retransmission requests is reduced.

  That is, in the case of communication in which the result of sending data can be confirmed by the user who is the sender on the spot by recording or displaying on the electronic device, the angle of the transmitter or the angle of the transmitter is changed. For example, the user can improve the communication state himself / herself, and the amount of error processing can be reduced by the improvement.

  As described above, even if an error occurs in data being communicated, by adopting the communication functions 4 and 5 that collectively transmit a data retransmission request after receiving a plurality of data, FIG. As shown, the time required for file communication can be reduced.

  FIG. 32A shows the IrDA retransmission procedure. In conventional IrDA, after transmitting data, the receiver returns a lower layer response (LAP), and then the transmitter again transfers the transmission right to the receiver (RR), and then the receiver is in the upper layer (OBEX). After returning the response, a sequence of transmitting the next data is performed.

  When an error occurs, it is notified by a lower layer response, and the packet is retransmitted.

  FIG. 32B shows the normal system operation of the present invention used in the communication function 4 or the communication function 7, and FIG. 32C shows the operation when the error of the present invention occurs. The transmitter assigns a sequence number to the packet, gives a transmission right to the receiver after transmitting a predetermined number of packets, and inquires of the receiver whether the data has no problem.

  If OK (no error was detected), the receiver notifies the transmitter that it was received normally. If an error was detected, the data part after the packet that could not be received is ignored and the transmission right is ignored. Only the transfer part is confirmed, and the packet number that could not be received after receiving the transfer of the transmission right is notified. An error in this case means that a part of the data in the packet is damaged by CRC or the like, or that the number is skipped by the sequence number.

  When the transmitter receives OK, it transmits from the next packet. When a notification (packet number) that an error has occurred is received, the data transmitted earlier from the packet number is retransmitted.

  By adopting the above-described mechanism, it is possible to close between the packets, and efficient communication is possible.

  FIG. 33A shows the normal operation of the present invention used in the communication function 5 or 8, and FIG. 33B shows the operation when the error of the present invention occurs. The transmitter assigns a sequence number to the packet and transmits all data continuously.

  The receiver only checks whether or not there is an error, and if it is normally received, after receiving all the data, the receiver recognizes that it is normal reception and performs the following operation. The next operation in this case is, for example, displaying, printing, or saving the received data.

  If an error is detected, the receiver recognizes that the signal has not been received normally and performs the following operation. The next operation in this case is an indicator for notifying the user of the failure or a state of waiting for the next reception.

  By reducing the amount of error processing as in this embodiment, the number of data packets and response packets can be reduced, the time required for exchange is reduced, and the CPU load is hardly required. When this is used, an effective speed of 3.5 to 3.8 Mbps is possible. For example, in the case of a 150 kbyte file compressed with JPEG of about 800,000 pixels (XGA: 1024 × 768), the effective speed in the IrDA protocol takes 0.6 seconds as 2 Mbps and 1.2 seconds as 1 Mbps. However, as in this embodiment, if the error rate processing amount is reduced to an effective speed of 3.8 Mbps, it becomes 0.31 seconds, and if the effective speed is 3.5 Mbps, it becomes 0.35 seconds. As a result, communication can be performed at about half or less of IrDA, and the time required for file communication can be shortened.

  Further, by adopting the communication functions 7 and 8 that use both of the above two communication functions, the time required for file communication in the IrDA protocol shown in FIG. As shown in c), it can be further shortened.

For example, when the above two communication functions are used, the case of transmitting the above 150 kByte video file will be described. In IrDA,
Station discovery (3-4 seconds) + Information exchange (1-2 seconds) + Data transmission (0.6-1.2 seconds) = Total (4.6-7.2 seconds)
Such things
(Station discovery + Information exchange) (0.1 seconds) + Data communication (0.31 to 0.35 seconds) = Total (0.41 to 0.45 seconds)
The communication time is 1/10 to 1/17.

  If the communication time is about 5 seconds, the user may turn the portable device in another direction during communication or give up that the communication is not possible. If it is about 2 seconds, since the data communication is completed while the portable device is turned and the transmission process is performed, it is very easy to understand and convenient communication can be performed.

  As described above, in the data transfer system and the data transfer method according to the present embodiment, the portable device including the transmission unit 14 and the reception unit 25 as a wireless communication interface and the recording medium (memory 12 or 22) for storing data is provided. And an electronic device that includes a transmitter 14 and a receiver 25 as a wireless communication interface and records data. The portable device and the electronic device search for the counterpart device at the start of communication, and at the same time, store the communication functions 1 and 2 for exchanging parameters necessary for connection (memory 12 and 22), and communication for controlling communication Controllers 13 and 23 are provided as control means, and both controllers 13 and 23 transfer data between the portable device and the electronic device using the communication functions 1 and 2.

  In other words, as a method of shortening the communication time, a station discovery command (XID command in IrDA) that only performs a search for a counterpart device is not transmitted at the start of communication, and both a search and a command that holds parameters necessary for connection are used. Communication between the portable device and the electronic device is performed using the communication functions 1 and 2 that output a packet having the function.

  As a result, since both the station discovery command and the connection procedure are not used, the data transfer time can be shortened. Therefore, it is possible to reduce the probability of communication failure when the angle between the devices becomes a certain angle or more, or the distance becomes a certain distance or more.

  In the data transfer system and the data transfer method according to the present embodiment, whether the parameters necessary for connection exchanged between the communication functions 1 and 2 are set to initial values so as to use fixed values in advance. , Including the connection parameter or command of the upper layer in the connection packet.

  As a result, the connection time can be further shortened by using a fixed value set in advance as a parameter required for connection, or by using an upper layer parameter or command included in one connection packet. Therefore, it is possible to reduce the probability of communication failure when the angle between the devices becomes a certain angle or more, or the distance becomes a certain distance or more.

The initial value here refers to, for example, the data link layer
Baud Rate: 4Mbps, 115kbps, 9600bps
(communication speed)
Maximum Turn Around Time: 1s [transmitter (Primary)], 100ms [receiver (Secondary)]
(Time that can have the transmission right to the maximum)
Data Size: 2048 bytes
(Maximum length that can be put in one packet)
Window Size: 1
(Number of packets that can be transmitted continuously with existing IrDA)
Additional BOFs: 0
(Number of dummy pulses inserted to stabilize optical characteristics at 115kbps or 9600bps)
Minimum Turn Around Time: 0.5ms
(The time you have to wait at least after receiving a packet from the other device before sending it)
Link Disconnect / Threshold Time: 1 seconds
(Time to disconnect when packet cannot be received for the set value)
Minimum Packet Interval: 100 us
(Time between packets)
The upper layer command indicates, for example, an OBEX Connect command and a response such as its success.

  Further, in the data transfer system and the data transfer method according to the present embodiment, the portable device and the electronic device do not perform data retransmission processing even when an error occurs in data during communication, or many continuous data transmissions. As a communication control means for controlling communication, and memories 12 and 22 as storage means for storing programs and data for realizing the communication functions 4 and 5 with a reduced number of error processes, such as once error processing. Each of the controllers 13 and 23 transfers data between the portable device and the electronic device using the communication functions 4 and 5.

  That is, as a method of shortening the communication time, communication between the mobile device and the electronic device is performed using the communication functions 4 and 5 that reduce the number of error processes. Also, the error information is returned in one packet.

  As a result, it is possible to omit frames and response packets that are frequently exchanged in order to perform retransmission processing, reduce the CPU processing capacity required for retransmission processing, and shorten data transfer time. can do. Therefore, it is possible to reduce the probability of communication failure when the angle between the devices becomes a certain angle or more, or the distance becomes a certain distance or more.

  Further, in the data transfer system and the data transfer method of the present embodiment, the portable device and the electronic device have the communication function 7 or the communication function 2 and the communication function 5 having both the communication function 1 and the communication function 4. Each of which includes memories 12 and 22 as storage means for storing a program and data for realizing the communication function 8 having both functions, and controllers 13 and 23 as communication control means for controlling communication. 13 and 23 use the communication functions 7 and 8 to transfer data between the portable device and the electronic device.

  As a result, by using the communication function 7 having the characteristics of both the communication function 1 and the communication function 4 or the communication function 8 having the characteristics of both the communication function 2 and the communication function 5, further data transfer is possible. Time can be shortened. Therefore, it is possible to reduce the probability of communication failure when the angle between the devices becomes a certain angle or more, or the distance becomes a certain distance or more.

  In the data transfer system and the data transfer method of the present embodiment, the wireless communication is infrared (IR) communication.

  That is, as described above, there is the IrDA standard for data transfer using infrared rays. Therefore, for example, with respect to a device adopting a transfer method compliant with the IrDA standard, the communication between the devices may be performed when the angle between the devices becomes a certain angle or more, or the distance becomes a certain distance or more. Can reduce the probability of failure.

[Embodiment 2]
Another embodiment of the present invention will be described with reference to FIGS. Configurations other than those described in the present embodiment are the same as those in the first embodiment. For convenience of explanation, members having the same functions as those shown in the drawings of the first embodiment are given the same reference numerals, and explanation thereof is omitted.

  In FIG. 10B, the communication function 7 that reduces the connection procedure and reduces the response from the receiver side is used. However, the communication function 8 communicates only in one direction by eliminating the response from the receiver. Thus, the data transmission function on the receiver side can be eliminated. In normal data communication, one-way communication is difficult to use because it is unknown whether data has arrived reliably, but as in the present invention, a user sends a still image from a mobile phone, and the user can see the result at a glance. There is no particular problem in such applications. FIG. 10C shows a communication sequence in only one direction. The packet structure is the same as in FIG.

  FIG. 11A and FIG. 11B show the connection only sequence of this embodiment, and FIG. 11C shows the structure of the connection packet. In this case, the lower response packet in FIG. 11C is not used.

[Embodiment 3]
The following will describe another embodiment of the present invention with reference to FIGS. Configurations other than those described in the present embodiment are the same as those in the first and second embodiments. For convenience of explanation, members having the same functions as those shown in the drawings of Embodiments 1 and 2 are given the same reference numerals, and explanation thereof is omitted.

(1) Communication Layer FIG. 34 is a schematic diagram showing the correspondence between the OSI 7 hierarchical model, the IrDA hierarchy, and the communication system hierarchy according to the present invention.

  In the present embodiment, configurations and operations of a transmitter and a receiver of a communication system according to the present invention will be described in detail based on an OSI 7 layer model. Here, the OSI 7 layer model is also called “OSI basic reference model” or “OSI hierarchical model”.

  In the OSI seven-layer model, in order to realize data communication between different models, the communication functions that the computer should have are divided into seven layers, and standard function modules are defined for each layer.

  Specifically, the first layer (physical layer) is responsible for electrical conversion and mechanical work for sending data to the communication line. The second layer (data link layer) secures a physical communication path and performs error detection of data flowing through the communication path. The third layer (network layer) selects a communication path and manages addresses in the communication path. The fourth layer (transport layer) performs data compression, error correction, retransmission control, and the like. The fifth layer (session layer) establishes and releases a virtual route (connection) for communication programs to exchange data. The sixth layer (presentation layer) converts data received from the fifth layer into a format that is easy for the user to understand, and converts data sent from the seventh layer into a format suitable for communication. The seventh layer (application layer) provides various services using data communication to humans and other programs.

  Each communication layer of the communication system according to the present embodiment also has a function equivalent to the corresponding layer of the OSI 7 layer model. However, as shown in FIG. 34, the communication system has a six-layer structure in which a session layer and a presentation layer are combined into one.

  The present invention can be widely applied to communication systems in which a transmitter and a receiver establish communication of a plurality of communication layers and perform communication. That is, the division of the communication function may not follow the OSI 7 layer model. The number of communication layers can be arbitrarily selected as long as there are a plurality of communication layers to be connected.

  Further, the present invention reduces the time required for connection by collecting connection requests of a plurality of communication layers, so that reconnection is easy even when the communication path is disconnected. Therefore, the present invention is particularly suitable for wireless communication using, for example, infrared rays, which easily cuts the communication path. However, the present invention is also effective in IEEE802.11 wireless, other wireless communication including Bluetooth, and wired communication.

  In this embodiment, an example in which all communication layers are connected by one communication will be described. However, the present invention is not limited to this. For example, after one communication layer is connected, the remaining plurality of communication layers may be connected. In addition, connection of one communication layer may be performed by a plurality of communications. For example, if the network layer connection requires two communications, the data link layer connection and the network layer first connection are combined into one connection request, and the network layer second connection and the transport layer connection. May be combined into one connection request.

  In this embodiment, for convenience of explanation, explanation will be made based on IrSimple which is an application example of the present invention. However, the present invention is not limited to IrSimple. Note that IrSimple is a partial improvement of conventional IrDA.

  In the present embodiment, the data link layer, the network layer, the transport layer, and the session layer + presentation layer may be expressed as LAP, LAMP, SMP, and OBEX, respectively, in accordance with IrSimple. When the communication layer is distinguished between the transmitter and the receiver, “P” is added to the transmitter and “S” is added to the receiver. For example, “LAP (P)” means the data link layer of the transmitter.

(2) Sequence between transmitter and receiver (2-1) Connection sequence [A] Conventional IrDA
FIG. 27 is a sequence diagram showing a conventional IrDA connection sequence. FIG. 28 is an explanatory diagram showing a data structure of communication data in a conventional IrDA connection sequence.

  As shown in FIG. 27, the conventional IrDA uses an XID command to search for a target device to be connected. The search is for determining whether or not the counterpart device is in the communication range. At this time, a device that receives the XID command uses a global address (Global) as the Destination Device Address so that the XID command can be received (XID command in FIG. 28).

  The receiver that has received the XID command returns an XID response. At this time, the Source Device Address of the XID command is inserted into the Destination Device Address in the XID response (XID response in FIG. 28).

  If the counterpart device is found, the transmitter sends an SNRM command to connect the data link layer. At this time, the transmission is performed with necessary parameters so that only the device detected by putting the Source Device Address of the XID response in the Destination Device Address of the SNRM command is connected. Receiving this SNRM command, the receiver returns a UA response with parameters necessary for connection. This flow completes the data link layer connection.

  Thereafter, similarly, upper layers such as a network layer, a transport layer, a session layer, and a presentation layer are connected.

[B] This embodiment (with response)
FIG. 11A is a sequence diagram showing a connection sequence according to the present embodiment (response is sent). FIG. 11C is an explanatory diagram showing a data structure of communication data in the connection sequence of the present embodiment (response is sent).

  In the present embodiment (with a response), the SNRM command can have the same function as the search by using a global address for the Destination Device Address of the SNRM (SNRM command in FIG. 11C).

  Further, in this embodiment (with a response), it is necessary for connection of higher layers such as a network layer, a transport layer, a session layer, and a presentation layer in the SNRM command and UA response which are connection packets of the data link layer. Insert parameters and commands. Thereby, it is possible to condense the connection packets for connecting the upper layers necessary for the conventional IrDA into one packet.

  Therefore, the search and connection sequence, which conventionally required a plurality of packets, can be performed with one packet pair.

[C] This embodiment (no response)
FIG. 11B is a sequence diagram showing a connection sequence according to the present embodiment (no response is sent). FIG. 11C is an explanatory diagram showing the data structure of communication data in the connection sequence of the present embodiment (no response is sent). In the present embodiment (no response), the UA response (UA response for SNRM in FIG. 11C) is not necessary.

  Depending on the user or application and the data type, a communication method in which the response from the receiver is omitted can be selected. In this case, as shown in FIG. 11 (b), the search and connection can be completed only by the SNRM command.

(2-2) Data exchange sequence [A] Conventional IrDA
FIG. 32A is a sequence diagram showing a conventional IrDA data exchange sequence. FIG. 35 (a) is an explanatory diagram showing a data structure of communication data in a conventional IrDA data exchange sequence.

  As shown in FIG. 32A, in the conventional IrDA, after transmitting data, the receiver returns a lower layer response (LAP Response), and then the transmitter again assigns the transmission right to the receiver (RR After that, the receiver performs a sequence of sending the next data after returning the response (OBEX Response) of the upper layer.

  When an error occurs, the fact is notified by a lower layer response, and the packet is retransmitted.

  In conventional IrDA, data communication is performed using an I frame (FIG. 35A). Ns contains the number managed by the transmitter, and Nr contains the number managed by the receiver. The data link layer (LAP layer) uses this number to prevent retransmission and packet loss.

[B] This embodiment (with response)
FIGS. 32B and 32C are sequence diagrams showing a data exchange sequence according to the present embodiment (response is sent). FIG. 35B is an explanatory diagram showing a data structure of communication data in the data exchange sequence of the present embodiment (response is sent).

  In the present embodiment (with a response), the response of the lower layer and the upper layer for each piece of data is reduced as much as possible, and whether or not there is an error after transmitting a lot of data is returned.

  At the time of data communication, the transmitter uses a packet constructed by a sequential packet number and a flag for asking whether there is a problem with received data, and divided data obtained by dividing the data according to the packet size.

  As shown in FIG. 32B, the transmitter transmits a packet with the flag turned on after transmitting a predetermined number of packets. On the other hand, if the receiver receives a packet from the beginning of the previous data or the above flag is turned on and sends back a reply, if it does not detect an error, it sends a message that it has been received normally. Notify the machine. In addition, if the receiver detects an error from the beginning of the previous data or after receiving the packet with the flag turned on and sending a reply, the receiver after the packet that could not be received The divided data portion is ignored, only the flag is checked, and if the flag is on, the packet number that could not be received due to an error is notified to the transmitter.

  Further, when the transmitter receives a normal reception from the receiver, the transmitter transmits from the next packet. Further, when the transmitter receives a notification that there is an error, the transmitter retransmits from the packet number that could not be received to the packet with the flag turned on.

  Thereby, it is possible to pack between the packets, and efficient communication is possible.

  As shown in FIG. 35B, a UI frame is used in the present embodiment (with a response). For this reason, the data link layer (LAP layer) cannot recognize missing packets and detects them in the transport layer.

  A sequential number, a data confirmation flag, a flag indicating whether the data is the last packet, and a flag indicating whether the received data is normal are provided in the data portion of the transport layer of the UI frame, and data transmission is performed using these flags.

[C] This embodiment (no response)
FIGS. 33A and 33B are sequence diagrams showing a data exchange sequence according to the present embodiment (no response is sent). FIG. 35B is an explanatory diagram showing a data structure of communication data in the data exchange sequence of the present embodiment (no response is sent).

  In the present embodiment (no response), only the data integrity is confirmed when the receiver response is not required. Therefore, the transmitter assigns a sequence number to the packet and transmits all data continuously.

  Then, the receiver only checks whether or not there is an error. When receiving normally, after receiving all the data, the receiver recognizes normal reception in the receiver and performs the following operation. The next operation in this case is, for example, displaying, printing, or saving the received data. On the other hand, when an error is detected, the receiver recognizes that it has not received normally in the receiver and performs the following operation. The next operation in this case is an indicator for notifying the user of the failure or a state of waiting for the next reception.

  Note that the UI frame shown in FIG. 35B is also used in the present embodiment (no response is sent).

(2-3) Cutting sequence [A] Conventional IrDA
FIG. 36A is a sequence diagram showing a conventional IrDA cutting sequence. FIG. 36B is an explanatory diagram showing a data structure of communication data in a conventional IrDA disconnection sequence.

  As shown in FIG. 36A, in the conventional IrDA, the disconnection process is performed in order from the upper layer, and finally the data link layer (LAP layer) is disconnected.

[B] This embodiment (with response)
FIG. 37A is a sequence diagram showing a disconnection sequence according to the present embodiment (response is sent). FIG. 37 (c) is an explanatory diagram showing the data structure of communication data in the disconnection sequence of the present embodiment (response is sent).

  As shown in FIG. 37 (c), in the present embodiment (with a response), parameters and commands necessary for disconnecting upper layers such as a network layer, a transport layer, a session layer, a presentation layer, etc. are represented by a DISC command and a UA. Inserted into the response.

  Thereby, the disconnection sequence which conventionally required a plurality of packets can be performed with one packet pair.

[C] This embodiment (no response)
FIG. 37 (b) is a sequence diagram showing a disconnection sequence of the present embodiment (no response is sent). FIG. 37 (c) is an explanatory diagram showing the data structure of communication data in the disconnection sequence of the present embodiment (response is sent). In the present embodiment (no response), the UA response (UA response in FIG. 37 (c)) is not necessary.

  As shown in FIG. 37 (b), in this embodiment (no response), when connection is made assuming that no response from the receiver is required, it can be assumed that the search and disconnection are completed only with the DISC command.

(3) Sequence in Transmitter and Receiver In FIGS. 38 to 58, for convenience of explanation, the data link layer is denoted as LAP, the network layer is denoted as LAMP, the transport layer is denoted as TTP or SMP, and the session layer and the presentation layer are denoted as OBEX. . In order to distinguish the communication layer between the transmitter and the receiver, “P” is added to the transmitter and “S” is added to the receiver. For example, “LAP (P)” means the data link layer of the transmitter.

(3-1) Connection sequence [A] Conventional IrDA
FIG. 38 is a sequence diagram showing a conventional IrDA connection sequence. The data structure of communication data in the conventional IrDA connection sequence is as shown in FIG.

  As shown in FIG. 38, in the conventional IrDA, the transmitter and the receiver are connected in order from the lower layer after preparing for connection. Each communication layer performs connection after receiving a notification from the lower layer, and when the connection is completed, notifies the upper layer. Finally, the connection with OBEX is completed and the connection is completed.

[B] This embodiment (with response)
FIG. 39 is a sequence diagram showing a connection sequence according to the present embodiment (response is sent). FIGS. 40A and 40B are explanatory diagrams showing the data structure of communication data in the connection sequence of the present embodiment (response is sent).

  As shown in FIG. 39, in this embodiment (with a response), both the transmitter and the receiver prepare for connection. Thereafter, the transmitter passes the request of the upper layer as it is to the lower layer and transmits it as one packet (SNRM). On the other hand, the receiver receives the SNRM packet and notifies that it has been connected to the upper layer as it is, and then passes the response of OBEX (S) as it is to the lower layer and transmits it as one packet (UA). To do. The transmitter completes the connection upon receipt of the UA, and sends a notification (Connect.confirm) to the upper layer.

  The sequence in the transmitter and receiver at this time is as follows.

  First, each communication layer of the transmitter will be described.

  OBEX (P) promptly inserts a connection request command into the lower layer (SMP (P)) and generates a connection request function (Primitive) when a connection request is received from an application. When OBEX (P) receives a connection confirmation function from SMP (P), OBEX (P) confirms the response of the OBEX connection from the data, and if the response indicates no problem (Success), the connection is completed. .

  The SMP (P) receives the connection request function from the OBEX (P), and immediately adds the parameters necessary for communication with the SMP (S) of the receiver to the data of the connection request function of the OBEX (P). Thus, a connection request function is generated for the lower layer (LMP (P)). Further, when the SMP (P) receives the connection confirmation function from the LMP (P), the SMP (S) extracts the parameter generated by the SMP (S) of the receiver from the function data, confirms the value, and the SMP (S) End the negotiation. The SMP (P) transmits data obtained by removing the SMP (S) parameter from the data of the connection confirmation function to the OBEX (P) as a connection confirmation function.

  The LMP (P) receives the connection request function from the SMP (P), and immediately adds the parameters necessary for communication with the LMP (S) of the receiver to the data of the connection request function of the SMP (P). Thus, a connection request function is generated for the lower layer (LAP (P)). When the LMP (P) receives the connection confirmation function from the LAP (P), the LMP (P) extracts the parameter generated by the LMP (S) of the receiver from the function data, confirms the value, and the LMP (S) End the negotiation. Further, the LMP (P) transmits data obtained by removing the LMP (S) parameter from the data of the connection confirmation function as a connection confirmation function.

  Normally, an LSAP (Link Service Access Point) is defined to manage logical ports. When one connection is made one to one, there is no need to use LMP. In this case, a connectionless value is used as a fixed value for LSAP. This eliminates the need for LMP connection parameter exchange.

  Upon receipt of the connection request function from the LMP (P), the LAP (P) immediately adds a parameter necessary for communication with the LAP (S) of the receiver to the data of the connection request function of the LMP (P). And outputs an SNRM command to the physical layer of the receiver. Further, when the LAP (P) receives a UA response from the physical layer of the receiver, the LAP (P) extracts the parameter generated by the LAP (S) of the receiver from the data of the UA response, confirms the value, and determines the LAP (S). The negotiation with is terminated. The LAP (P) transmits data obtained by removing the LAP (S) parameter from the UA response data to the LMP (P) as a connection confirmation function.

  Next, each communication layer of the receiver will be described.

  OBEX (S) receives a connection request function from the application and enters a reception standby state. When OBEX (S) receives the connection notification function (Indication) from the lower layer (SMP (S)), it confirms the OBEX connection command from the data, and if there is no problem, connects the response Success. A response function (Response) is output to SMP (S) to complete the connection.

  In response to the connection request function from OBEX (S), SMP (S) enters a reception standby state. When the SMP (S) receives a connection notification function from the lower layer (SMP (S)), the SMP (S) extracts the parameter generated by the SMP (P) of the transmitter from the function data and returns a response to it. A parameter is created, a connection request function including data obtained by removing the SMP (P) parameter from the function data is issued to OBEX (S), and then a connection response function from OBEX (S) is waited for. Further, when the SMP (S) receives the connection response function from the OBEX (S), the SMP (S) adds the response parameter to the data of the connection response function of the OBEX (S) to the LMP (S), and A connection response function is generated for the LMP (S), and the SMP layer negotiation is terminated.

  The LMP (S) receives a connection request function from the SMP (S) and enters a reception standby state. Also, when the LMP (S) receives a connection notification function from the lower layer (LAP (S)), it extracts the parameter generated by the LMP (P) of the transmitter from the function data and returns a response to it A parameter is created, a connection request function including data obtained by removing the LMP (P) parameter from the function data is issued to SMP (S), and then a connection response function from SMP (S) is waited for. Further, when the LMP (S) receives the connection response function from the SMP (S), the LMP (S) adds the response parameter to the data of the connection response function of the SMP (S) to the LAP (S), and A connection response function is generated for LAP (S), and the negotiation of the LMP layer is terminated.

  Normally, an LSAP (Link Service Access Point) is defined to manage logical ports. When one connection is made one to one, there is no need to use LMP. In this case, a connectionless value is used as a fixed value for LSAP. This eliminates the need for LMP connection parameter exchange.

  In response to the connection request function from the LMP (S), the LAP (S) enters a reception standby state. In addition, when the LAP (S) receives an SNRM command from the physical layer, the LAP (S) extracts the parameter generated by the transmitter LAP (P) from the SNRM command data, and extracts the LAP (P) parameter from the SNRM command data. After issuing the connection request function including the excluded data to the LMP (S), a response parameter is generated for the connection request function, and the connection response function from the LMP (S) is awaited. Further, when the LAP (S) receives the connection response function from the LMP (S), the LAP (S) adds the response parameter to the data of the connection response function of the LMP (S) and sends a UA response to the physical layer. Is output and the LAP layer negotiation is terminated.

[C] This embodiment (no response)
FIG. 41 is a sequence diagram showing a connection sequence according to the present embodiment (no response is sent). FIG. 40A is an explanatory diagram showing the data structure of communication data in the connection sequence of the present embodiment (no response is sent).

  As shown in FIG. 41, in this embodiment (no response), both the transmitter and the receiver prepare for connection. Thereafter, the transmitter passes the request of the upper layer as it is to the lower layer and transmits it as one packet (SNRM). And a transmitter raises notification (Connect.confirm) from LAP (P) to an upper layer as connection completion at the time of transmitting a SNRM packet. On the other hand, the receiver receives the SNRM packet, notifies the upper layer as it is, and completes the connection when notifying OBEX (S).

  The sequence in the transmitter and receiver at this time is as follows.

  First, each communication layer of the transmitter will be described.

  OBEX (P) promptly inserts a connection request command into the lower layer (SMP (P)) and generates a connection request function (Primitive) when a connection request is received from an application. OBEX (P) completes connection when it receives a connection confirmation function from SMP (P).

  The SMP (P) receives the connection request function from the OBEX (P), and immediately adds the parameters necessary for communication with the SMP (S) of the receiver to the data of the connection request function of the OBEX (P). Thus, a connection request function is generated for the lower layer (LMP (P)). Further, when the SMP (P) receives the connection confirmation function from the LMP (P), the SMP (P) terminates the SMP layer negotiation, assuming that the transmitted parameters can be negotiated. At this time, the SMP (P) transmits a connection confirmation function to the OBEX (P).

  The LMP (P) receives the connection request function from the SMP (P), and immediately adds the parameters necessary for communication with the LMP (S) of the receiver to the data of the connection request function of the SMP (P). Thus, a connection request function is generated for the lower layer (LAP (P)). In addition, when the LMP (P) receives the connection confirmation function from the LAP (P), the LMP (P) terminates the negotiation of the LMP layer, assuming that the transmitted parameters can be negotiated. At this time, the LMP (P) transmits a connection confirmation function to the SMP (P).

  Normally, an LSAP (Link Service Access Point) is defined to manage logical ports. When one connection is made one to one, there is no need to use LMP. In this case, a connectionless value is used as a fixed value for LSAP. This eliminates the need for LMP connection parameter exchange.

  Upon receipt of the connection request function from the LMP (P), the LAP (P) immediately adds a parameter necessary for communication with the LAP (S) of the receiver to the data of the connection request function of the LMP (P). And outputs an SNRM command to the physical layer of the receiver. Also, LAP (P) ends negotiation of the LAP layer, assuming that negotiation with the transmitted parameters has been completed at the time when the SNRM command is output. At this time, LAP (P) transmits a connection confirmation function to LMP (P).

  Next, each communication layer of the receiver will be described.

  OBEX (S) receives a connection request function from the application and enters a reception standby state. When OBEX (S) receives the connection notification function (Indication) from the lower layer (SMP (S)), it confirms the OBEX connection command from the data, and if there is no problem, the connection is completed. .

  In response to the connection request function from OBEX (S), SMP (S) enters a reception standby state. Further, when the SMP (S) receives the connection notification function from the lower layer (SMP (S)), the SMP (S) extracts the parameter generated by the SMP (P) of the transmitter from the function data and uses the parameter. Complete the negotiation. Then, SMP (S) issues to OBEX (S) a connection request function including data obtained by removing the SMP (P) parameter from the function data.

  The LMP (S) receives a connection request function from the SMP (S) and enters a reception standby state. Also, when the LMP (S) receives the connection notification function from the lower layer (LAP (S)), it extracts the parameter generated by the LMP (P) of the transmitter from the function data and uses that parameter. Complete the negotiation. Then, the LMP (S) issues a connection request function including the data obtained by removing the LMP (P) parameter from the function data to the SMP (S).

  Normally, an LSAP (Link Service Access Point) is defined to manage logical ports. When one connection is made one to one, there is no need to use LMP. In this case, a connectionless value is used as a fixed value for LSAP. This eliminates the need for LMP connection parameter exchange.

  In response to the connection request function from the LMP (S), the LAP (S) enters a reception standby state. Further, when the LAP (S) receives an SNRM command from the physical layer, the LAP (S) extracts the parameter generated by the LAP (P) of the transmitter from the data of the SNRM command, and completes the negotiation using the parameter. Then, the LAP (S) issues a connection request function including the data obtained by removing the LAP (P) parameter from the function data to the LMP (S).

(3-2) Data exchange sequence [A] Conventional IrDA
FIG. 42 is a sequence diagram showing a conventional IrDA data exchange sequence. Note that the data structure of communication data in the conventional IrDA connection sequence is as shown in FIG.

  As shown in FIG. 42, in the conventional IrDA, the transmitter generates a PUT command, which flows to the lower layer and is transmitted to the transmitter as an I frame. The receiver receives it and raises the data indication to the upper layer. TTP (S) returns a credit to the transmitter indicating how many packets it can receive. The TTP layer is responsible for flow control.

  The transmitter transmits the credit received from the receiver to TTP (P). At this time, LAP (P) transmits an RR (transmission right transfer) packet. Thereafter, after receiving the RR packet, the receiver outputs a response in which OBEX (S) is generated as an I frame.

  The transmitter receives the response of OBEX (S) and generates the next PUT command.

[B] This embodiment (with response)
FIG. 43 is a sequence diagram showing a data exchange sequence according to the present embodiment (response is sent). FIG. 44 is an explanatory diagram showing the data structure of communication data in the data exchange sequence of the present embodiment (response is sent).

  As shown in FIG. 43, in the present embodiment (with a response), the transmitter generates a PUT command, which is transmitted to the lower layer, and is output as a UI frame.

  On the other hand, the receiver receives the data and sends a notification to the upper layer. At this time, the SMP (S) notifies the upper layer OBEX (S) that data continues (status = truncated).

  After transmitting a certain number of packets, the transmitter turns on a flag for confirming whether the data has arrived properly and transmits the packets. In response, in the receiver, the SMP (S) notifies the transmitter of whether or not there was an error, and if so, the number where the error occurred.

  If there is no error, the transmitter outputs the next packet group, and if there is an error, the transmitter retransmits packets after the packet having the error.

  When the end of data is reached, the transmitter turns on a flag indicating the end of data and transmits the data. On the other hand, if this flag is ON, the receiver notifies OBEX (S) that the data is ready (status = OK) and waits for a response to OBEX (S). . When an OBEX (S) response occurs, the data is transmitted to the lower layer and output as a UI frame.

  If the received response is Success, the transmitter ends normally.

  The sequence in the transmitter and receiver at this time is as follows.

  In the transmitter, OBEX (P) outputs a PUT command as a data transmission function to the lower layer. However, if OBEX (P) can be transmitted by SMP (P) without requiring a response to a PUT command other than the PUT Final (last PUT) command (Continue is returned if normal), The command is output. In the case of a command other than the PUT Final command or the PUT command, it waits for a data notification function from the lower layer, and terminates the command by looking at the response in the data.

  Here, the data transmission function is a function (Data Request) for requesting data transmission to a lower layer. The data notification function is a function (Data Indicate) for notifying that data has been received from a lower layer.

  In the receiver, OBEX (S) receives the data notification function from the lower layer and receives data. However, OBEX (S) does not return a response to a PUT command other than the PUT Final command, and returns a response as a data transmission function in the case of a command other than the PUT Final command or the PUT command.

  Here, headers and the like in the upper layer and lower layer data transmission functions and data notification functions common to the transmitter and the receiver will be described.

  When the SMP receives the data transmission function from the OBEX, when the size that can be transmitted by the LMP is smaller than the size of the data in the data transmission function, the SMP makes the data to a size that can be transmitted by the LMP. (B) When the size that can be transmitted by the LMP is larger than the size of the data in the data transmission function, several data are combined to create larger data that is equal to or smaller than the size that can be transmitted. The SMP is a sequential number, an argument for inquiring the data reception status of the other device, an argument indicating the end of the data, an argument indicating that the SMP of the other device requires an OBEX response, and whether the received data is normal. An SMP header including an argument indicating whether or not is created. Then, a data transmission function including the data added to the divided or combined data with the SMP header is issued to the LMP.

  Further, when the SMP receives the data notification function from the LMP, the SMP extracts the SMP header from the data in the function, and checks whether the sequence number is normal (that is, the sequence number comes in order without omission). If it is normal, a data notification function is issued to OBEX. At this time, the data notification function may be output for each data notification function from the lower layer, or data of the data notification functions from several lower layers may be output together.

  The SMP (P) of the transmitter converts the data transmission function from OBEX (P) into a data transmission function to LMP (P), and issues a data transmission function of a certain fixed amount of data. Thereafter, the SMP (P) sets the argument for inquiring the data reception state to the receiver to True, issues a data transmission function, and waits for the data notification function of the LMP (P).

  The SMP (P) analyzes the SMP header in the data notification function from the LMP (S), and if the argument indicating whether the received data is normal indicates that it has been received normally, Assuming that data is ready to be transmitted, the state is such that transmission to OBEX (P) is possible. That is, data from OBEX (P) can be received in this state.

  On the other hand, SMP (P) analyzed that the SMP header of the data notification function received from LMP (S) and analyzed that the argument indicating whether the received data was normal was not received normally. In the case shown, the data transmission function from which it was notified that the data could not be received normally to the data transmission function in which the argument for inquiring the data reception state to the other device is set to True is generated again. The SMP (P) repeats the re-occurrence until the data by all the data transmission functions are notified to the receiver or a predetermined number of times.

  Further, when the SMP (P) receives a data transmission function whose true data argument is True from OBEX (P), to the LMP (P) in which the last data of the data transmission function is entered. The data transmission function is issued with an argument indicating that this data transmission function is the end of the data or an argument indicating that a response of the OBEX (S) of the receiver is required as True.

  On the other hand, when the SMP (S) of the receiver receives the data notification function from the LMP (S), an argument indicating that a response of the end of the data or the OBEX (S) of the receiver is necessary is provided. If True, a data notification function is issued in which the data from which the SMP (S) header is removed is inserted into OBEX (S).

  Further, when the SMP (S) receives the data notification function from the LMP (S), the SMP (S) analyzes the SMP header from the data in the data notification function and confirms the sequential number. If the SMP (S) is able to receive normally until it receives a header for which the argument for inquiring the data reception state from the receiver is true, it indicates that the argument indicating whether the received data is normal has been received normally. An SMP header is created as shown, and a data transmission function is issued to the LMP (S) as data.

  On the other hand, when the SMP (S) detects that the signal has not been normally received, the SMP (S) stores the number of the SMP header that is predicted to have not been normally received. For example, when 0, 1, 2, 3, and 5 are received, and the fifth should be 4, but 4 is not received, the number predicted to have not been received normally is 4. Thereafter, the SMP (S) checks only whether the argument for inquiring the data reception state to the receiver of the SMP header is True, and stops the output of the data notification function to the OBEX (S).

  SMP (S) indicates that an argument indicating whether or not the received data was normal could not be normally received when receiving a data notification function in which the argument for inquiring the data reception state to the receiver is True Then, the SMP header in which the SMP header number that could not be normally received is inserted into the field for entering the sequential number is created, and the data transmission function is issued to the LMP (S) as data.

  Further, when the SMP (S) receives a data notification function in which an argument indicating the end of data or an argument indicating that the response of the OBEX (S) of the receiver is required is OBEX, OBEX After outputting the data notification function to (S), it waits for a data transmission request from OBEX (S).

  When the SMP (S) receives a data transmission request from the OBEX (S), the SMP (S) creates an SMP header indicating that the received data is normally received as an argument indicating whether or not the received data is normal. A data transmission function is issued to the LMP (S) in addition to the data transmission request data of S). If there is an error, the notification to OBEX (S) stops, so the wait is only normal.

  Next, when the LMP receives a data transmission request function from an upper layer, the LMP creates data by attaching an LMP header to the data in the function, and issues a data transmission request function containing the data in the LAP. When the LMP receives a data notification function from the LAP, the LMP creates data excluding the LMP header from the data in the function, and issues a data notification function containing the data in the SMP.

  Note that it is not necessary to use LMP when making one connection on a one-to-one basis. In this case, the LMP header contains an LSAP containing a connectionless value.

  When the LAP receives a data transmission request function from the LMP, the LAP creates data by attaching a LAP header to the data in the function, and issues a UI frame containing the data in the physical layer. When the LAP receives a data reception notification from the physical layer, the LAP creates data excluding the LAP header from the data of the UI frame, and issues a data notification function containing the data in the LMP. In the present embodiment, the LAP header includes a connection address and a UI indicator.

[C] This embodiment (no response)
FIG. 45 is a sequence diagram showing a data exchange sequence according to the present embodiment (no response is sent). FIG. 44 is an explanatory diagram showing the data structure of communication data in the data exchange sequence of the present embodiment (no response is sent).

  As shown in FIG. 45, in this embodiment (no response), the transmitter generates a PUT command, which is transmitted to the lower layer and is output as a UI frame.

  On the other hand, the receiver receives the data and sends a notification to the upper layer. At this time, the SMP (S) notifies the upper layer OBEX (S) that data continues (status = truncated).

  Then, when the end of data is reached, the transmitter turns on a flag indicating the end of data and transmits the data. On the other hand, if this flag is ON, the receiver notifies OBEX (S) that the data is ready (status = OK), and ends the data exchange sequence.

  The sequence in the transmitter and receiver at this time is as follows.

  In the transmitter, OBEX (P) outputs a PUT command as a data transmission function to the lower layer. However, OBEX (P) can terminate a command without requiring a response to all commands. Then, OBEX (P) outputs the next command when transmission is possible with SMP (P).

  In the receiver, OBEX (S) receives the data notification function from the lower layer and receives only data without returning a response to all commands.

  Here, headers and the like in the upper layer and lower layer data transmission functions and data notification functions common to the transmitter and the receiver will be described.

  When the SMP receives the data transmission function from the OBEX, when the size that can be transmitted by the LMP is smaller than the size of the data in the data transmission function, the SMP makes the data to a size that can be transmitted by the LMP. (B) When the size that can be transmitted by the LMP is larger than the size of the data in the data transmission function, several data are combined to create larger data that is equal to or smaller than the size that can be transmitted. The SMP is a sequential number, an argument for inquiring the data reception status of the other device, an argument indicating the end of the data, an argument indicating that the SMP of the other device requires an OBEX response, and whether the received data is normal. An SMP header including an argument indicating whether or not is created. Then, a data transmission function including the data added to the divided or combined data with the SMP header is issued to the LMP.

  Further, when the SMP receives the data notification function from the LMP, the SMP extracts the SMP header from the data in the function, and checks whether the sequence number is normal (that is, the sequence number comes in order without omission). If it is normal, a data notification function is issued to OBEX. At this time, the data notification function may be output for each data notification function from the lower layer, or data of the data notification functions from several lower layers may be output together.

  The SMP (P) of the transmitter converts the data transmission function from OBEX (P) into a data transmission function to LMP (P). When receiving a data transmission function in which the argument that is the last of the data is False from OBEX (P), the data with the SMP header added to the data is issued to LMP (P). On the other hand, when the SMP (P) receives a data transmission function in which the argument that the end of the data is true is received from OBEX (P), the last data of the data transmission function is entered. A data transmission function to the LMP (P) is issued with an argument indicating that the data transmission function is the end of the data or an argument indicating that a response of the OBEX (S) of the receiver is required as True. .

  On the other hand, when receiving the data notification function from the lower layer, the SMP (S) of the receiver analyzes the SMP header from the data in the data notification function and confirms the sequential number. Then, when the SMP (S) analyzes the SMP header and confirms that the reception is successful, the SMP (S) issues a data transmission function to the LMP (S).

  On the other hand, when the SMP (S) detects that it has not been received normally, it notifies the OBEX (S) as an error. For example, when 0, 1, 2, 3, and 5 are received, the fifth should be 4, but not 4.

  Thereafter, the SMP (S) waits for the argument indicating the end of the data of the SMP header or the argument indicating that the response of the OBEX (S) of the receiver is True, and is True. Whether to receive a data notification function (note that even if it is received, OBEX (S) is not notified), a disconnection notification function is received, or data notification to OBEX (S) is not performed until a certain period of time elapses. .

  Next, when the LMP (P) of the transmitter receives a data transmission request function from the SMP (S), the LMP header is added to the data in the function to create data, and the data is stored in the LAP (P). The entered data transmission request function is issued.

  On the other hand, when the LMP (S) of the receiver receives the data notification function from the LAP (S), it creates data excluding the LMP header from the data in the function, and the data is stored in the SMP (S). Issue the data notification function.

  Note that it is not necessary to use LMP when making one connection on a one-to-one basis. In this case, the LMP header contains an LSAP containing a connectionless value.

  When the LAP (P) of the transmitter receives the data transmission request function from the LMP (P), the LAP header is added to the data in the function to create the data, and the UI frame containing the data in the physical layer is created. To emit.

  On the other hand, when receiving the data reception notification from the physical layer, the LAP (S) of the receiver creates data excluding the LAP header from the data of the UI frame, and the data enters the LMP (S). Issue data notification function. In the present embodiment, the LAP header includes a connection address and a UI indicator.

(3-3) Cutting sequence [A] Conventional IrDA
FIG. 46 is a sequence diagram showing a conventional IrDA cutting sequence. The data structure of the communication data in the conventional IrDA disconnection sequence is as shown in FIG.

  As shown in FIG. 46, in the conventional IrDA, a disconnection command is generated from the OBEX (P) of the transmitter, and both the transmitter and the receiver are disconnected in order from the upper layer, and the disconnection at the last LAP layer is performed. End with.

[B] This embodiment (with response)
FIG. 47 is a sequence diagram showing a disconnection sequence according to the present embodiment (response is sent). FIGS. 48A and 48B are explanatory diagrams showing the data structure of communication data in the disconnection sequence of the present embodiment (response is sent).

  As shown in FIG. 47, in the present embodiment (with a response), a transmitter disconnect command is transmitted to a lower layer, and a DISC command is generated. The receiver receives the DISC command and notifies it to the upper layer, the response is returned, and a UA response is generated. Thereafter, the upper layer of the transmitter is notified that the UA response has been received, and the process ends.

  The sequence in the transmitter and receiver at this time is as follows.

  First, each communication layer of the transmitter will be described.

  When a disconnect request is received from an application, OBEX (P) promptly inserts a disconnect request command into the lower layer (SMP (P)) and generates a disconnect request function (Primitive). When OBEX (P) receives the disconnection confirmation function from SMP (P), it confirms the response of OBEX disconnection from the data, and if the response indicates no problem (Success), it completes disconnection. .

  The SMP (P) receives the disconnection request function from the OBEX (P), and immediately adds the parameters necessary for communication with the SMP (S) of the receiver to the data of the disconnection request function of the OBEX (P). Thus, a disconnection request function is generated for the lower layer (LMP (P)). In addition, when the SMP (P) receives the disconnection confirmation function from the LMP (P), the parameter generated by the SMP (S) of the receiver is extracted from the function data, the value is confirmed, and the SMP (S) The disconnection process is terminated. The SMP (P) transmits data obtained by removing the SMP (S) parameter from the data of the disconnection confirmation function to the OBEX (P) as a disconnection confirmation function. However, normally, there is no parameter newly added by SMP (P) at the time of disconnection.

  The LMP (P) receives the disconnection request function from the SMP (P), and immediately adds parameters necessary for communication with the LMP (S) of the receiver to the data of the disconnection request function of the SMP (P). Thus, a disconnection request function is generated for the lower layer (LAP (P)). In addition, when the LMP (P) receives a disconnection confirmation function from the LAP (P), the LMP (S) extracts a parameter generated by the LMP (S) of the receiver from the function data, confirms the value, and the LMP (S) The disconnection process is terminated. Further, the LMP (P) transmits data obtained by removing the LMP (S) parameter from the data of the disconnection confirmation function to the SMP (P) as a disconnection confirmation function. However, normally, there is no parameter newly added by LMP (P) at the time of disconnection.

  The LAP (P) receives the disconnection request function from the LMP (P), and immediately adds the parameters necessary for communication with the LAP (S) of the receiver to the data of the disconnection request function of the LMP (P). The DISC command is output to the physical layer of the receiver. Further, when the LAP (P) receives a UA response from the physical layer of the receiver, the LAP (P) extracts the parameter generated by the LAP (S) of the receiver from the data of the UA response, confirms the value, and determines the LAP (S). Terminate the connection with. The LAP (P) issues data obtained by removing the LAP (S) parameter from the UA response data to the LMP (P) as a disconnection confirmation function. However, normally, there is no parameter newly added with LAP (P) at the time of disconnection.

  Next, each communication layer of the receiver will be described.

  When OBEX (S) receives a disconnection notification function (Indication) from the lower layer (SMP (S)), it confirms the OBEX disconnection command from the data, and if there is no problem, a response of Success is received as a disconnection response function. (Response) is output to SMP (S), and the disconnection is completed.

  When the SMP (S) receives the disconnection notification function from the lower layer (SMP (S)), the SMP (S) extracts the parameter generated by the SMP (P) of the transmitter from the function data, and sets the parameter of the response to it. After creating and issuing a disconnection request function including data obtained by removing the SMP (P) parameter from the function data to OBEX (S), it waits for a disconnection response function from OBEX (S). Further, when the SMP (S) receives a disconnect response function from the OBEX (S), the SMP (S) adds the response parameter to the data of the disconnect response function of the OBEX (S) with respect to the LMP (S), A disconnection response function is generated for the LMP (S), and the SMP layer disconnection process is terminated. However, normally, there is no parameter newly added by SMP (S) at the time of cutting.

  When the LMP (S) receives the disconnection notification function from the lower layer (LAP (S)), the LMP (S) extracts the parameter generated by the LMP (P) of the transmitter from the function data, and sets the parameter of the response to it. After creating and issuing a disconnect request function including data obtained by removing the LMP (P) parameter from the function data to SMP (S), a disconnect response function from SMP (S) is awaited. Further, when the LMP (S) receives the disconnection response function from the SMP (S), the LMP (S) adds the response parameter to the data of the disconnection response function of the SMP (S) to the LAP (S), A disconnect response function is generated for LAP (S), and the LMP layer disconnection process is terminated. However, normally, there is no parameter newly added by LMP (S) at the time of disconnection.

  When the LAP (S) receives a DISC command from the physical layer, the LAP (P) extracts the parameters generated by the transmitter LAP (P) from the DISC command data, and removes the LAP (P) parameters from the DISC command data. After issuing a disconnection request function including data to LMP (S), a parameter for a response to the function is created, and a disconnection response function from LMP (S) is awaited. Further, when the LAP (S) receives the disconnection response function from the LMP (S), the LAP (S) adds the response parameter to the data of the disconnection response function of the LMP (S) and sends a UA response to the physical layer. To terminate the LAP layer cutting process. However, normally, there is no parameter newly added by LAP (S) at the time of disconnection.

[C] This embodiment (no response)
FIG. 49 is a sequence diagram showing a disconnection sequence according to the present embodiment (no response is sent). FIG. 48 (a) is an explanatory diagram showing the data structure of communication data in the disconnection sequence of the present embodiment (no response is sent).

  As shown in FIG. 49, in this embodiment (no response), a transmitter disconnect command is transmitted to a lower layer, and a DISC command is generated. In the transmitter, the disconnection process ends at this point. On the other hand, the receiver receives the DISC command and transmits it to the upper layer, and when the notification is sent to the upper layer, the disconnection process ends.

  The sequence in the transmitter and receiver at this time is as follows.

  First, each communication layer of the transmitter will be described.

  When a disconnect request is received from an application, OBEX (P) promptly inserts a disconnect request command into the lower layer (SMP (P)) and generates a disconnect request function (Primitive). OBEX (P) completes the disconnection when it receives a disconnection confirmation function from SMP (P).

  The SMP (P) receives the disconnection request function from the OBEX (P), and immediately adds the parameters necessary for communication with the SMP (S) of the receiver to the data of the disconnection request function of the OBEX (P). Thus, a disconnection request function is generated for the lower layer (LMP (P)). Further, when the SMP (P) receives the disconnection confirmation function from the LMP (P), it is determined that the SMP (P) has been disconnected with the transmitted parameters, and ends the SMP layer disconnection process. Further, SMP (P) transmits a disconnection confirmation function to OBEX (P). However, normally, there is no parameter newly added by SMP (P) at the time of disconnection.

  The LMP (P) receives the disconnection request function from the SMP (P), and immediately adds parameters necessary for communication with the LMP (S) of the receiver to the data of the disconnection request function of the SMP (P). Thus, a disconnection request function is generated for the lower layer (LAP (P)). Further, when the LMP (P) receives the disconnection confirmation function from the LAP (P), it is determined that the LMP (P) has been disconnected with the transmitted parameters, and ends the LMP layer disconnection process. In addition, LMP (P) transmits a disconnection confirmation function to SMP (P). However, normally, there is no parameter newly added by LMP (P) at the time of disconnection.

  The LAP (P) receives the disconnection request function from the LMP (P), and immediately adds the parameters necessary for communication with the LAP (S) of the receiver to the data of the disconnection request function of the LMP (P). The DISC command is output to the physical layer of the receiver. Further, LAP (P) terminates the LAP layer disconnection process on the assumption that it has been disconnected with the transmitted parameters when it outputs the DISC command. LAP (P) issues a disconnection confirmation function to LMP (P). However, normally, there is no parameter newly added with LAP (P) at the time of disconnection.

  Next, each communication layer of the receiver will be described.

  When OBEX (S) receives a disconnect notification function (Indication) from the lower layer (SMP (S)), it confirms the OBEX disconnect command from the data, and if there is no problem, it completes disconnection.

  When the SMP (S) receives the disconnect notification function from the lower layer (SMP (S)), the SMP (S) extracts the parameter generated by the SMP (P) of the transmitter from the function data, and uses that parameter to disconnect. Complete. SMP (S) issues a disconnect request function to OBEX (S), in which data obtained by removing the SMP (P) parameter from the function data is input. However, normally, there is no parameter newly added by SMP (S) at the time of cutting.

  When the LMP (S) receives a disconnect notification function from the lower layer (LAP (S)), the LMP (S) extracts the parameter generated by the LMP (P) of the transmitter from the function data, and uses that parameter to disconnect Complete. Also, the LMP (S) issues a disconnect request function to the SMP (S) in which data obtained by removing the LMP (P) parameter from the function data is input. However, normally, there is no parameter newly added by LMP (S) at the time of disconnection.

  When the LAP (S) receives a DISC command from the physical layer, the LAP (S) extracts the parameter generated by the LAP (P) of the transmitter from the data of the DISC command, and completes the disconnection using the parameter. Also, LAP (S) issues a disconnect request function including data obtained by removing the parameter of LAP (P) from the data of the DISC command to LMP (S). However, normally, there is no parameter newly added by LAP (S) at the time of disconnection.

(4) Switching of presence / absence of response The flow of data and parameters between the communication layers of the transmitter and the receiver will be described with reference to FIGS.

  In the present embodiment, each communication layer LAP, LMP, SMP, OBEX of the transmitter and the receiver has a connection request function, a connection notification function, a connection response function, and a connection confirmation function. These functions are functions for accessing the LAP layer from the upper layer (that is, the LMP layer).

  The function can specify Data (hereinafter referred to as data) and Requested-Qos or Returned-QoS as arguments. The data is set in each communication layer as described above.

  On the other hand, Qos notifies the specification of negotiation parameters such as the baud rate determined by the LAP and the negotiation result to higher layers including OBEX. Qos is also used in conventional IrDA.

  For example, when a transmitter application or OBEX (P) issues a QoS including a parameter indicating that a response is necessary / unnecessary, the QoS is sequentially transmitted to the lower layer up to LAP (P). Then, LAP (P) reflects the QoS value as the value of the negotiation parameter (Ack Less Connect) and transmits it to the receiver.

  As a result, the communication layers of the transmitter and the receiver operate according to the application of the transmitter or the specification of response necessity / unnecessity by OBEX (P), so that bidirectional / one-way connection is possible.

  50 to 54 are explanatory views showing the flow of data and parameters between communication layers in the connection sequence (FIG. 39) of the present embodiment (response is sent). Note that the parameters of QoS between OBEX and SMP, between SMP and LMP, and between LMP and LAP may be the same or different. Therefore, in the figure, -a, -b, and -c are added for distinction.

  In the transmitter, as shown in FIG. 50, data to be transmitted to the receiver and data of QoS-1 (QoS requested by the transmitter) are transmitted from the upper layer to the lower layer by con.req (data) (FIG. 39). To pass.

  On the other hand, as shown in FIG. 51, the receiver passes only the data of QoS-2 (QoS requested by the receiver) from the upper layer to the lower layer by con.req.

  Thereafter, when the LAP (S) receives the SNRM command, the receiver compares the QoS-1 of the transmitter with the QoS-2 of the own device, and creates QoS-3 as a commonly negotiated parameter. Then, as shown in FIG. 52, LAP (S) notifies QoS-3 to the upper layer together with data from the transmitter by con.ind (data). Each upper layer stores this QoS-3 and holds it as a connection parameter at the time of connection.

  Subsequently, the receiver does not need QoS when notifying con.resp (data). Therefore, as shown in FIG. 53, in con.resp (data), only data is passed from the upper layer to the lower layer. When LAP (S) receives con.resp (data), QoS-3 is added to the UA response and a UA response is issued.

  Subsequently, in the transmitter, LAP (P) receives the UA response and stores QoS-3 as a negotiated parameter. Then, as shown in FIG. 54, LAP (P) notifies QoS-3 to the upper layer together with the receiver data by con.conf (data). Each communication layer holds this QoS-3 as a connection parameter in the established connection.

  In this embodiment, for example, Requested-QoS: Baud-Rate + Max-Turn-Around-Time + Disconnect-Threshold + DataSize + Ack less connection + Min-Packet-Interval is used as the QoS of con.req. . In addition, Result-QoS: Baud-Rate + Disconnect-Threshold + DataSize + Ack less connection (indication primitive only) is used as the QoS of Con.ind and con.conf.

  In the connection sequence (FIG. 41) of the present embodiment (no response), the flow of data and parameters between the communication layers is as follows.

  In the transmitter, as shown in FIG. 50, data to be transmitted to the receiver and data of QoS-1 (QoS requested by the transmitter) are transmitted from the upper layer to the lower layer by con.req (data) (FIG. 41). To pass.

  Then, the LAP (P) of the transmitter stores QoS-1 as it is as QoS-3. Then, LAP (P) notifies QoS-3 to the upper layer by con.conf as shown in FIG. Each communication layer holds this QoS-3 as a connection parameter in the established connection.

  On the other hand, as shown in FIG. 51, the receiver passes only the data of QoS-2 (QoS requested by the receiver) from the upper layer to the lower layer by con.req.

  After that, at the time when the LAP (S) receives the SNRM command, the receiver sets the QoS-1 of the transmitter to QoS-3. In addition, if the parameters of QoS-2 are not satisfied by the combination with QoS-1, it cannot be received.

  Next, as shown in FIG. 52, LAP (S) notifies QoS-3 to the upper layer together with data from the transmitter by con.ind (data). Each upper layer stores this QoS-3 and holds it as a connection parameter at the time of connection.

  Thereby, the presence / absence of a response can be switched by the application operating the above QoS-1 and QoS-2 on the upper layer (application).

  Here, as a criterion for switching between presence / absence of response, the file format of the file to be transmitted, application, user selection, and the like can be considered.

  Specifically, when the file format is used as a reference, for example, in the case of a multimedia-related file, both with and without a response can be selected, and the data is received in files such as a phone book, mail, schedule, etc. If there is a need to confirm, response presence may be automatically selected. Further, when the application is used as a reference, for example, in the case of a slide show, no response may be automatically selected. Further, in the case of selection by the user, for example, the user may be allowed to select from a menu display with / without response.

  FIG. 55 to FIG. 57 are explanatory diagrams showing modifications of the flow of data and parameters between communication layers in the connection sequence of the present embodiment.

  When the information of all communication layers is included in the first SNRM command in the transmitter (FIG. 39), data and parameters are not relayed and transmitted in each communication layer (FIG. 50), but as shown in FIG. The communication layer can be directly passed to the LAP layer.

  Conversely, as shown in FIG. 56, the receiver may be configured to take out all data and parameters included in the SNRM command and pass them directly from the LAP layer to each communication layer as the destination.

  Further, as shown in FIG. 57, in the transmitter, data and parameters of OBEX (P), SMP (P), and LMP (P) are integrated by LMP (P), and further, the above integration is performed by LAP (P). It is also possible to configure such that an SNRM command is generated by adding a parameter of LAP (P) to the data and parameters that have been processed.

(5) Functional Block FIG. 58 is a functional block diagram showing a configuration example of the communication system 1000 according to the present embodiment.

  As shown in FIG. 58, the communication system 1000 is configured to include a transmitter 1100 and a receiver 1200 that establish communication with a plurality of communication layers and perform communication. Here, the transmitter 1100 and the receiver 1200 correspond to a protocol for establishing / disconnecting a connection by transmitting / receiving a command and data necessary for connecting / disconnecting a plurality of adjacent communication layers in one connection / disconnection request. ing.

  The communication system 1000 includes a transmitter 1100 and a receiver 1300 that establishes communication with a plurality of communication layers and performs communication. Here, the transmitter 1100 and the receiver 1300 transmit and receive commands and data necessary for connecting / disconnecting a plurality of communication layers in connection / disconnection requests for each communication layer, and establish / disconnect a protocol (for example, , Conventional IrDA).

  Note that the transmitter 1100 and the receivers 1200 and 1300 may have both a function as a transmitter and a function as a receiver, respectively. That is, by providing the function of the transmitter 1100 and the function of the receiver 1200, a communication device that performs transmission and reception using the communication protocol according to this embodiment can be configured. Further, by providing the functions of the transmitter 1100 and the functions of the receivers 1200 and 1300, it is possible to configure a communication device that performs transmission and reception by switching between the communication protocol according to the present embodiment and the conventional IrDA communication protocol. .

  The transmitter 1100 includes a request generation unit (connection request generation unit, disconnection request generation unit) 1101, a request transmission unit (connection request transmission unit, a disconnection request transmission unit) 1102, a connection setting unit (connection setting unit) 1103, and a response reception. Unit (response receiving means) 1104 at least.

  The request generation unit 1101 and the connection setting unit 1103 are provided in each communication layer L2a, L3a, L4a, and L56a. The request transmitter 1102 and the response receiver 1104 are provided in the communication layer L2a immediately above the physical layer L1.

  The request generation unit 1101 generates a connection request including commands and data necessary for connection of a plurality of adjacent communication layers. Further, the request generation unit 1101 generates a disconnection request including commands and data necessary for disconnecting a plurality of adjacent communication layers. The plurality of communication layers referred to here are intermediate layers (communication layers L2a, L3a, L4a, and L56a) excluding the physical layer L1 and the application layer L7.

  Note that the combination of communication layers that collect commands and data in a connection request may not match the combination of communication layers that combine commands and data in a disconnection request. For example, at the time of connection, the communication layers may be grouped into two sets, the connection may be established by two connection requests, and at the time of disconnection, all the communication layers may be disconnected by one disconnection request.

  Further, when the request generation unit 1101 connects using a protocol with a response, the request generation unit 1101 includes a command for requesting the receiver 1200 to transmit a response to the connection request in the connection request.

  In addition, the request generation unit 1101 includes a command for requesting a receiver to transmit a response at the time of data communication in a connection request when connecting using a protocol with a response.

  Note that the request generation unit 1101 includes a command that includes only one of a response to the connection request and a response at the time of data communication even in the case of connection using a protocol with a response. Also good. That is, a response to a connection request can be omitted, and a response at the time of data communication can be omitted. Of course, if both responses are omitted, a connection with no response is made.

  The request transmission unit 1102 transmits the connection request and the disconnection request generated by the request generation unit 1101 to the receiver 1200. The response receiving unit 1104 receives a response to the connection request and the disconnection request from the receiver 1200.

  When the connection setting unit 1103 is connected using a protocol with a response, the connection setting unit 1103 performs setting corresponding to the response received from the receiver 1200 in each communication layer with respect to the connection request transmitted from the own device.

  In addition, when the connection setting unit 1103 is connected using a protocol without a response, the connection setting unit 1103 performs setting corresponding to the connection request in each communication layer without receiving a response to the connection request transmitted from the own device from the receiver.

  The receiver 1200 includes a request reception unit (connection request reception unit, disconnection request reception unit) 1201, a connection establishment unit (connection establishment unit, disconnection unit) 1202, a response generation unit (response generation unit) 1203, a response transmission unit (response Transmission means) 1204.

  The request receiving unit 1202 and the response transmitting unit 1204 are provided in the communication layer L2a immediately above the physical layer L1. The connection establishment unit 1202 and the response generation unit 1203 are provided in each communication layer L2a, L3a, L4a, and L56a.

  The request receiving unit 1201 receives a connection request including a command and data necessary for connection of a plurality of adjacent communication layers from the transmitter 1100. Further, the request receiving unit 1201 receives a disconnect request including a command and data necessary for disconnecting a plurality of adjacent communication layers from the transmitter 1100.

  The connection establishment unit 1202 extracts a command and data from the connection request received by the connection request reception unit 1201, and establishes connection of each communication layer based on the command and data. The connection establishment unit 1202 extracts a command and data from the disconnection request, and disconnects the communication layers based on the command and data.

  The response generation unit 1203 generates a response when connected using a protocol with a response, that is, when a command requesting transmission of a response to a request or data is received.

  For example, the response generation unit 1203 generates a response when the connection request includes a command for requesting transmission of a response to the connection request. If the connection request includes a command that requests transmission of a response when exchanging data, a response is generated in response to data reception.

  The response transmission unit 1204 transmits the response generated by the response generation unit 1203 to the transmitter 1100.

  With the above configuration, a plurality of communication layers can be connected by one connection request. Therefore, it is possible to combine commands and data for connecting a plurality of communication layers into one connection request.

  Therefore, the time required for establishing a connection can be shortened compared to a protocol that transmits a connection request for each communication layer as in conventional IrDA. Therefore, even if it is disconnected in the middle of data exchange, it is possible to connect again in a short time and resume data exchange.

  In addition, the request from the transmitter can include designation of the necessity of the response from the receiver. Further, when the transmitter does not request a response from the receiver, the transmitter can complete processing such as establishing a connection without a response from the receiver.

  Further, the transmitter 1100 has a function of transmitting commands and data necessary for connecting / disconnecting a plurality of communication layers as a request for each communication layer in order to communicate with the receiver 1300. Note that the receiver 1300 can arbitrarily select a receiver corresponding to a conventional protocol such as IrDA, and thus a detailed description thereof will be omitted.

  Specifically, the transmitter 1100 includes a second request generator (second connection) in addition to the request generator (first connection request generator) 1101, the request transmitter 1102, and the connection setting unit 1103. Connection request generation means) 1151, second request transmission section (connection request transmission means) 1152, and protocol selection section (selection means) 1131.

  The second request generation unit 1151 is provided in each communication layer L2b, L3b, L4b, L56b. The protocol selection unit 1131 is provided in the application layer L7. The request transmission unit 1152 is provided in the communication layer L2b immediately above the physical layer L1. Furthermore, each communication layer L2b, L3b, L4b, L56b has a function equivalent to the connection setting unit 1103.

  The protocol selection unit 1131 selects one of the request generation unit 1101 and the second request generation unit 1151 when generating a connection request and a disconnection request. Note that the protocol may be selected by an application, or may be instructed by a user by operating a button.

  The second request generator 1151 generates a connection request and a disconnection request including commands and data necessary for connection for each communication layer. For example, a request corresponding to conventional IrDA is generated.

  The second request transmission unit 1152 transmits the connection request and the disconnection request generated by the second request generation unit 1151 to the receiver 1300.

  With the above configuration, the transmitter generates a connection request that combines a plurality of communication layer commands and the like in order to shorten the connection time, and a connection request for each communication layer like conventional IrDA. The protocol to be generated can be selected and used.

  When the transmitter 1100 receives a request as a receiver, the transmitter 1100 further receives a connection request including a command and data necessary for connection from the transmitter for each communication layer. Have

  The communication system of the present embodiment is suitable for infrared communication or the like where the communication path is easily cut. However, it can be applied to any physical layer.

  In the present embodiment, the case where the physical layer is shared with the protocol for transmitting a request for each communication layer has been described. However, the physical layer may be different. Further, the conventional IrDA, which has four intermediate communication layers as a protocol for transmitting a request for each communication layer, has been described as an example. However, one intermediate communication layer may be used.

(6) Application Example The transmitter according to the present embodiment is suitable for a mobile phone or an imaging device that transmits a captured image to a receiver.

  When the above-mentioned transmitter function is realized in a mobile phone having an imaging function, even if the CPU of the mobile phone has a relatively low processing capacity, the address book and mail data stored in the mobile phone can be stored. It is possible to transfer to other mobile devices and devices with a small load.

  Furthermore, when transferring video data acquired by a built-in imaging function, the capacity of a unit file is relatively large, which is particularly meaningful. Of course, it is needless to say that the present function is useful not only in a mobile phone but also in an imaging device such as a digital camera.

  Further, the receiver according to the present embodiment is suitable for a broadcast receiving apparatus that receives a broadcast from a transmitter and a broadcast recording apparatus that records a broadcast received from a transmitter.

  When the above-mentioned receiver function is realized in the broadcast receiving / recording device, files such as video can be acquired at high speed from a mobile phone or digital camera with relatively low processing capability and can be immediately displayed on the display device. Become. Therefore, the user can easily display a desired image stored in the device at hand by remote operation. Furthermore, it is also possible to record in a large capacity recording unit of the broadcast reception recording apparatus.

  Note that the functions of the transmitter and the receiver of this embodiment can be realized by software. Therefore, when the functions of the transmitter and the receiver are realized by a mobile phone, software that realizes the functions of the transmitter and the receiver can be supplied via the mobile phone network.

[Embodiment 4]
The following will describe another embodiment of the present invention with reference to FIGS. Configurations other than those described in the present embodiment are the same as those in the first to third embodiments. For convenience of explanation, members having the same functions as those shown in the drawings of Embodiments 1 to 3 are given the same reference numerals, and descriptions thereof are omitted.

  In the data transfer system of the present embodiment, as shown in FIGS. 13 and 14, the portable device and the electronic device store the communication functions 1, 2, 4, 5, 7, 8, at least one type of communication function 3, communication function 3, 6 and 9 having a function of exchanging information of both devices after searching for a partner device and a strict error retransmission processing function Possess functions. The communication functions 3, 6, and 9 are IrDA protocols.

  Thus, as shown in FIG. 12, in this state, the communication functions 1, 2, 4, 5, 7, and 8 that reduce the time required for communication described in the first embodiment are first started at the beginning of communication. As shown by the “tone signal” as the identification signal in FIG. When the counterpart device has implemented any of the communication functions 1, 2, 4, 5, 7, and 8 described in the first embodiment, there is a response to this tone signal and communication can be performed.

  However, when only the IrDA protocol is possessed, no response to this tone signal is returned. The transmission side waits for a response for a certain period of time, and if no response is returned, communicates with the IrDA protocol. As a result, communication can be performed with a device equipped only with existing IrDA.

  In the present embodiment, the tone signal may be a connection packet for actual connection, or may be a dedicated signal simply for confirming the communication method provided in the receiving device 2a. .

  Here, a configuration for generating the “tone signal” will be described.

  As shown in FIG. 13, the transmission device 1 a according to the present embodiment has a CPU 11 a instead of the CPU 11, a controller 13 a instead of the controller 13, and wireless communication instead of the transmission unit 14, as compared with the transmission device 1. The difference is that a transmission unit 14a is provided as an interface, and a reception unit 15a is provided as a wireless communication interface.

  The CPU 11a performs a data transfer process in response to a user instruction input to an operation unit (not shown). When the CPU 11a receives a transfer instruction from the operation unit, the CPU 11a issues a reception device detection tone transmission request for requesting the controller 13a to transmit a tone signal for detecting whether or not the reception device exists in the data transferable range. send.

  When receiving from the controller 13a a reception device detection response tone reception completion notification indicating that a response tone signal for the reception device detection tone transmission request has been received, the CPU 11a performs the same processing as the CPU 11. That is, the CPU 11a stores transfer data to be transferred in the memory 12 and makes a transfer request to the controller 13a.

  The receiving unit 15a detects a tone signal transmitted from the outside via an infrared communication path, and outputs a tone signal detection signal to the controller 13a.

  The controller 13a includes a control unit 131a, a data packet generation unit 132, an error detection and correction code addition unit 133, a tone signal generation unit 134 as an identification signal generation unit, and a multiplexer 135.

  The multiplexer 135 selects one of the plurality of input terminals according to the switching signal from the control unit 131a, and outputs the signal input to the selected input terminal. Note that an error detection / correction code adding unit 133 and a tone signal generating unit 134 are connected to the input terminals of the multiplexer 135 of the present embodiment.

  The controller 131a controls the controller 13a in response to a request from the CPU 11a. As described above, the request from the CPU 11a includes a receiving device detection tone transmission request and a transfer request.

  Upon receiving the reception device detection tone transmission request, the control unit 131a outputs a tone signal generation request for requesting the tone signal generation unit 134 to generate a tone signal and the tone generated by the tone signal generation unit 134. A switching signal is output to the multiplexer 135 so as to output a signal. In addition, when receiving the tone signal detection signal from the receiving unit 15a, the control unit 131a sends a reception device detection response tone reception completion notification to the CPU 11a.

  When receiving the transfer request, the control unit 131 a reads the transfer data from the memory 12 and sends the read transfer data to the data packet generation unit 132, similarly to the control unit 131. At this time, the control unit 131a outputs a switching signal to the multiplexer 135 so as to output the data packet generated by the data packet generation unit 132. The control unit 131a detects that the transmission unit 14 has transmitted all data packets corresponding to the transfer data read from the memory 12, and sends a transmission end notification indicating that the data transmission has ended to the CPU 11a.

  In response to the tone signal generation request from the control unit 131a, the tone signal generation unit 134 generates a tone signal and sends the generated tone signal to the transmission unit 14a via the multiplexer 135.

  In addition to the function of the transmission unit 14, the transmission unit 14a has a function of transmitting a tone signal.

  Next, the receiving device 2a of this embodiment will be described with reference to FIG.

  As shown in the figure, the receiving device 2a includes a controller 23a instead of the controller 23 and a receiving unit 25a as a wireless communication interface instead of the receiving unit 25, as compared with the receiving device 2. The difference is that a transmission unit 26a is provided as a communication interface.

  The receiving unit 25a receives a packet or a tone signal from the outside. When receiving the packet, the receiving unit 25 a sends the received packet to the CDR 24. On the other hand, when receiving a tone signal, the receiving unit 25a outputs a tone signal detection signal indicating that the tone signal has been received to the controller 23a.

  The controller 23a includes a control unit 231a, a packet processing unit 232, an error detection / correction circuit 233, and a tone signal generation unit 234 as an identification signal generation unit.

  The control unit 231a performs predetermined processing according to the result sent from the error detection / correction circuit 233 or the tone signal detection signal from the receiving unit 25a. That is, similarly to the control unit 231, when the result from the error detection and correction circuit 233 indicates that there is no error in the divided data, the control unit 231a writes the divided data to the memory 22 and receives it to the CPU 21. Notify completion. On the other hand, when the result from the error detection and correction circuit 233 indicates that there is an error in the divided data, the control unit 231a discards the divided data and notifies the CPU 21 that there is a reception error.

  When receiving the tone signal detection signal from the receiving unit 25a, the control unit 231a sends a tone signal generation request for requesting the tone signal generation unit 234 to generate a tone signal. When receiving the tone signal detection signal, the control unit 231a sends a reception device detection tone reception notification to the CPU 21 for notifying that the reception device detection tone signal has been received from the transmission device 1a. Further, the transmission of the tone signal generated by the tone signal generation unit 234 is detected, and the transmission of the reception device detection response tone for notifying that the response tone signal for the reception device detection tone signal has been transmitted is detected. A notification is sent to the CPU 21. Thereby, the CPU 21 can know that data is transmitted from the transmission device 1a.

  The tone signal generation unit 234 receives the tone signal generation request from the control unit 231a, generates a tone signal, and sends the generated tone signal to the transmission unit 26a.

  The transmission unit 26a transmits the tone signal generated by the tone signal generation unit 234 to the outside.

  In the above portable device, as shown in FIG. 15, the transmission device 1a transmits and receives tone signals to and from the reception device 2a, and after detecting that the reception device 2a is within a communicable range, Send data. That is, a tone signal is transmitted from the transmitting device 1a to the receiving device 2a, and the receiving device 2a that has received the tone signal from the transmitting device 1a transmits a tone signal as a response. Here, the frequency and the period of the tone signal generated by the tone signal generation unit 134 of the transmission device 1a and the tone signal generation unit 234 of the reception device 2a may be the same or different, and are not limited to specific ones. Further, the number of times the tone signal is transmitted may be one time or a plurality of times. In the case of one time, the time required for detecting the receiving device can be further shortened and the power consumption can be reduced. In the case of multiple times, it is possible to improve the accuracy of receiving device detection.

  Therefore, the transmitting device 1a can determine that the receiving device 2a exists only by transmitting and receiving a tone signal to and from the receiving device 2a.

  As described above, in the data transfer system and the data transfer method according to the present embodiment, the mobile device and the electronic device have a function of exchanging information of both devices after searching for the counterpart device and a communication having an error retransmission processing function. Each of the controllers 13a and 23a as the communication control means further includes memories 12 and 22 as storage means for storing the functions 3, 6, and 9, respectively. 9 to transfer.

  That is, the transmission side tries communication using any one of the communication functions 1, 2, 4, 5, 7, and 8. At this time, if the receiving side does not have a communication function that matches that of the transmitting side, the communication time shortening effect by any one of the communication functions 1, 2, 4, 5, 7, and 8 is utilized. I can't.

  However, in this embodiment, the portable device and the electronic device all have common communication functions 3, 6, and 9. Therefore, when any one of the communication functions 1, 2, 4, 5, 7, and 8 cannot be used, for example, communication can be performed using the common communication functions 3, 6, and 9 such as the IrDA protocol. When any one of communication functions 2, 4, 5, 7, and 8 can be used, communication that can shorten the communication time can be performed.

  Further, in the data transfer system and the data transfer method of the present embodiment, each controller 13a of the portable device has the communication function of any one of the communication functions 1, 2, 4, 5, 7, and 8 at the start of data transmission. If the used communication request is made and no response to the request is returned, it is determined that the counterpart device does not have the same type of communication function 1, 2, 4, 5, 7, or 8. Then, communication is started using the communication functions 3, 6, and 9.

  In other words, the transmission side first tries to start communication with any one of the communication functions 1, 2, 4, 5, 7, and 8, and if no reply is returned from the other station, for example, a common IrDA protocol or the like is used. Communication can be performed with the communication functions 3, 6, and 9.

  As a result, when the partner station has the same type of communication function 1, 2, 4, 5, 7, or 8, the communication function 1 or 2 performs communication that can reduce the communication time. 4, 5, 7, and 8, communication functions 3, 6, and 9 such as the IrDA protocol can be used when the same type of communication function is not possessed. Therefore, it is possible to communicate with a device having only the communication functions 3, 6, 9 such as the IrDA protocol without any problem.

  In the data transfer system and data transfer method according to the present embodiment, the controllers 13a and 23a of the portable device and the electronic device both generate tone signal generation units as identification signal generation means for generating tone signals as identification signals. 134 and 234, and the portable device includes a CPU 11a as a determination unit that determines whether the counterpart device has any one of the communication functions 1 to 9 described above. At the start of data transmission, a communication request using one of the communication functions 1, 2, 4, 5, 7, and 8 is performed by transmitting the tone signal (identification signal) generated by the tone signal generation unit 134. Thereafter, when the tone signal (response identification signal) is received from the counterpart device, the counterpart device has the communication functions 1, 2, 4, 5, 7 8 determines that owns one same type of communication functions.

  Therefore, a receiving device exists only by transmitting and receiving a tone signal to and from the receiving device, and the receiving device has the same type of communication function 1, 2, 4, 5, 7, or 8. It can be determined that it is.

  In the data transfer system and the data transfer method according to the present embodiment, the communication functions 3, 6, and 9 are communication functions defined by IrDA (Infrared Data Association).

  Therefore, the angle between the devices becomes a certain angle or more than a certain distance, or the distance becomes a certain distance or more with respect to the device adopting the general IrDA standard for data transfer using infrared rays. As a result, the probability of communication failure can be reduced.

  Further, when the communication functions 3, 6, and 9 are set to the IrDA protocol, the communication functions 1, 2, 4, 5, 7, and 8 can use the physical layer of the IrDA as it is only by changing the software. Therefore, the communication functions 1, 2, 4, 5, 7, and 8 can be easily created based on the IrDA protocol.

  In the switching of the communication functions 1 to 9, a connection request is made with a communication protocol having the communication functions 1, 2, 4, 5, 7, and 8 as described above. In addition to switching the protocol based on the connection state, that is, switching to 9, the protocol may be switched by an application, or the protocol may be switched by user selection.

  When switching by application, for example, communication functions 1, 3, 4, 6, 7, and 9 are used for important data such as address books and e-mails, and communication functions 2, 5, and 8 are used for still image communication. It is to use. This is because the communication speed is high in the order of communication functions 2, 5, 8> communication functions 1, 4, 7> communication functions 3, 6, 9 and the reliability is high in the reverse order. Thus, the communication method can be changed depending on the application.

  Also, it can be changed by the user. Users who feel that the reliability is low unless they are always retransmitted due to a long distance can select the communication function with retransmission, and the users with short distance can select the communication function without retransmission. Is.

[Embodiment 5]
The following will describe another embodiment of the present invention with reference to FIGS. Configurations other than those described in the present embodiment are the same as those in the first to fourth embodiments. For convenience of explanation, members having the same functions as those shown in the drawings of Embodiments 1 to 4 are given the same reference numerals, and descriptions thereof are omitted.

  When sending data from a portable device such as a cellular phone to an electronic device, the integrity of the data can be detected by checking the size of the data received at the receiving side and the FCS.

  At this time, when it is detected that the data has been received completely without error, the data received at the receiving station is recorded, or FIG. 16 (a), FIG. 17 (a), FIG. 18 (a), FIG. a) As shown in FIG. 20 (a), when the display screen is provided, the user can display a message indicating that the signal has been received normally or a display lamp indicating that the signal has been received normally. Can be determined.

  On the other hand, when it is detected that there is an error in the data, the receiving station displays a message indicating that the reception has failed, or a display lamp indicating that the reception has not been received normally. It is made possible for the user to discriminate by lighting it. The user performs the next process (whether to record the transmitted data or retransmit another data) if it is received normally, and starts communication again if it is not received normally. To. For example, in the case of displaying with a lamp, the color of the lamp may be changed when the normal end does not end normally.

  Also, if there is an error in the data, the error distribution is detected, and if all frames have arrived but an error has occurred, the communication distance is far As shown in FIG. 16B, FIG. 17B, FIG. 18B, FIG. 19B, and FIG. 20B, the failure due to the influence is displayed on the screen or like a display lamp. Tell users with something. Further, when the frame does not follow in the middle (when the data size is smaller than the original data size), FIG. 16 (c), FIG. 17 (c), FIG. 18 (c), FIG. c) As shown in FIG. 20 (c), it is determined that the screen is interrupted in the middle or is directed in a different direction, and the user is notified by a display or a display lamp. Thereby, it is possible to tell the user what kind of problem the failure has occurred and reduce the probability of failure again in the same situation.

  In addition, when data is received normally, it may be recorded as it is, but a display indicating that reception has been completed normally (if the recording device has a display screen, After confirming the preview, the display indicating that the reception was successful, or the lamp indicating that the reception was successful, the confirmation button or touch panel or remote control It is also possible to record by performing an operation. This is to prevent the user's erroneous transmission from being recorded.

  As described above, in the data transfer system and the data transfer method according to the present embodiment, the controller 23a as the communication control unit of the electronic device uses the error detection / correction circuit 233 as the error detection unit for detecting the error of the received data. The device provided with the error detection / correction circuit 233 performs data communication using the communication function of any one of the communication functions 1 to 9 and detects an error by the error detection / correction circuit 233. When all of the above are received without error, at least one of recording the data or displaying that it was successfully received is performed, and when all of the data cannot be received without error due to some problem The CPU 21 is provided as a display control means for performing a display indicating that the signal could not be received.

  In other words, when all data is received without errors at the receiving station, data is recorded and / or a message indicating that the data has been received normally is displayed, and all data cannot be received without error due to some problem. If it is, a message indicating that the data could not be received is displayed.

  As a result, the user can immediately determine whether the result of sending data from the transmitting station has succeeded or failed, and if it has failed, the user can retransmit it.

  Further, in the data transfer system and the data transfer method according to the present embodiment, the CPU 21 receives a data error during data reception when performing data communication using the communication function of the same type of the communication functions 5 and 8. As an outage reason discriminating means for discriminating whether all packets have been received and there are one or more data errors in the packet and when the remainder has not arrived from a packet in the middle of the data It also has a function, and when one of the situations occurs, a different message is displayed corresponding to the situation.

  In other words, when an error is detected in the data at the receiving station, the data error occurrence status indicates that all packets have been received, and there are one or more data errors in the packet. And a display function for displaying different messages when any one of the situations occurs.

  As a result, if all packets have been received and there are one or more data errors in the packet, the error may be due to a long communication distance or disturbance light such as fluorescent light, sunlight, or incandescent light. By determining that it is increasing, it is displayed to send near, and if the remainder does not arrive from the packet in the middle of the data, by displaying that it was directed in another direction during the communication, Users can re-send them in the most appropriate way. Therefore, it is possible to prevent the communication from failing many times in the same situation.

  Further, in the data transfer system and the data transfer method of the present embodiment, when the CPU 21 as the display control means performs data communication using any one of the communication functions 1 to 9 of the same type, If all of the data can be received without error based on the detection by the error detection and correction circuit 233, a display indicating that the data has been received normally is displayed, and recording is started by an external start input operation.

  In other words, the receiver has a display function that indicates that the data has been received normally when all data has been received without error, and an operation button that starts recording, for example. After the data has been received normally, the button is pressed. Thus, it is possible to have a function of starting recording of received data. In addition to the button operation, the start input operation from the outside includes, for example, an operation with a remote controller.

  As a result, it is possible to record after confirming that the user has normally received the desired data.

[Embodiment 6]
The following will describe another embodiment of the present invention with reference to FIG. 2 to FIG. 7 and FIG. Configurations other than those described in the present embodiment are the same as those in the first to fifth embodiments. For convenience of explanation, members having the same functions as those shown in the drawings of the first to fifth embodiments are given the same reference numerals, and descriptions thereof are omitted.

  In this embodiment, a method for processing a video file in a mobile device will be described.

  For example, as shown in FIGS. 2 to 6, a video file of a portable device such as a mobile phone is linked to a video file of an electronic device such as a display device, a printing device, a recording device, a personal computer, and other portable devices. In this case, the mobile phone has only the display screen P as a small display unit. Therefore, conventionally, since the transmission video file is reduced and displayed, it takes time to transfer.

  Therefore, in this embodiment, a small-size video file for displaying thumbnails is stored in advance, and the small-size video file is used for image selection on a mobile phone. In this way, when this small file does not exist, by providing a function to automatically generate, it takes time to select first, but it can be selected smoothly after being viewed once.

  And when communicating and sending to an electronic device, a large-sized transmission video file can be sent and a beautiful image | video can be displayed or recorded with an electronic device.

  That is, since a portable device cannot have a very powerful CPU due to power consumption and size, it takes time to convert a large file to a small screen. On the other hand, it is better to display or record a video file to be displayed or recorded on an electronic device as it is in order to record a beautiful video.

  Therefore, as in the present embodiment, a video file of a small size for displaying thumbnails is stored in advance, so that when selecting a video file to be sent with a mobile phone, it is selected while viewing the thumbnail smoothly. become able to.

  In order to have the above function, the portable device of the present embodiment includes a display screen P as a display unit that displays an image, as shown in FIGS. Further, as shown in FIGS. 7 and 13, the portable device stores a transmission video file and a display video file that is paired with the transmission video file and has a smaller capacity than the transmission video file. A memory 12 serving as a storage unit and a file for transmitting a video file for transmission when performing wireless transfer, and a file for controlling to display a video using the video file for display when displaying on the display screen P CPU 11 and 11a as transfer display control means are provided.

  The CPUs 11 and 11a function as display video file generation and storage means for generating and storing a display video file from a transmission video file in advance when there is no display video file. .

  Further, when the electronic device is a display device, the CPUs 11 and 11a have a function as a size conversion unit that converts the size of the video file in accordance with the display capability of the display device and transmits the converted video file. As a result, in the case of a large video file that exceeds the display capability of the display device, it takes time to communicate, and the probability that a communication error occurs during the communication can be reduced.

  Further, when the electronic device is a printing device, the CPUs 11 and 11a have a function as a size conversion unit that converts the size of the video file according to the printing capability of the printing device and transmits the converted video file. As a result, in the case of a large video file that exceeds the printing capability of the printing apparatus, it takes time to communicate, and the probability that a communication error will occur during the communication can be reduced.

  Further, the CPUs 11 and 11a also have a function as resizing processing means in order to resize or process and record data.

  By the CPUs 11 and 11a as the resizing processing means, the portable device resizes or processes the data and records the data in the memory 12. Therefore, when transferring the data to the electronic device, for example, the size can be reduced and the transfer time can be transferred. Can be shortened.

  Finally, each block of the transmitting device 1 • 1a or the receiving device 2 • 2a may be configured by hardware logic, or may be realized by software using an arithmetic processing unit such as a CPU as follows. .

  That is, the transmitting device 1 · 1a or the receiving device 2 · 2a develops a CPU (central processing unit) that executes a command of a control program that realizes each function, a ROM (read only memory) that stores the program, and the program. A random access memory (RAM), and a storage device (recording medium) such as a memory for storing the program and various data. An object of the present invention is to provide a computer with program codes (execution format program, intermediate code program, source program) of a data transfer program of the transmitting device 1 • 1a or the receiving device 2 • 2a, which is software that realizes the functions described above. The recording medium recorded so as to be readable is supplied to the transmission device 1 • 1a or the reception device 2 • 2a, and the computer (or CPU or MPU) reads and executes the program code recorded on the recording medium. Is achievable.

  Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM / flash ROM.

  Further, the transmitting device 1 • 1a or the receiving device 2 • 2a may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Further, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, infrared light such as IrDA or remote control, Bluetooth, It can also be used with radio such as 802.11 radio, HDR, mobile phone network, satellite line, and terrestrial digital network. The present invention can also be realized in the form of a carrier wave or a data signal sequence in which the program code is embodied by electronic transmission.

  As described above, the data transfer program according to the present embodiment is a computer program for causing a computer to function as each unit of the data transfer system. Therefore, a data transfer system can be realized by realizing each means of the data transfer system with a computer.

  The recording medium of the present embodiment is a computer-readable recording medium that records a data transfer program that causes a computer to realize the above-described units and operate a data transfer system. Therefore, the data transfer system can be realized on a computer by the data transfer program read from the recording medium.

[Embodiment 7]
The following will describe another embodiment of the present invention with reference to FIGS. Configurations other than those described in the present embodiment are the same as those in the first to sixth embodiments. For convenience of explanation, members having the same functions as those shown in the drawings of Embodiments 1 to 64 are given the same reference numerals, and descriptions thereof are omitted.

  In the present embodiment, a video file processing method in a recording apparatus as an electronic apparatus will be described.

  As shown in FIG. 21, a recording device 30 as an electronic device in the data transfer system of this embodiment includes a data storage unit 31 as a recording medium for recording data, and the data recorded in the data storage unit 31. A display unit 32 as a display unit for displaying, a reading unit 33 as a reading unit for reading the information data and the hierarchical structure of the data stored in the data storage unit 31, and the hierarchical structure of the information data and data are displayed in association with each other. A hierarchical structure display control unit 34 serving as a hierarchical structure display control unit displayed on the unit 32 and a recording unit 35 serving as a recording unit that records data received from the above-described portable device in a hierarchical directory. The reading unit 33, the hierarchical structure display control unit 34, and the recording unit 35 are performed by the CPU. The CPU also has a function of decoding and executing an input operation from the input device 36, and a function of an operation input means for decoding an operation command sent from the mobile phone 40 and executing the operation. is doing.

  The data storage unit 31 includes a recording medium such as a DVD (Digital Video Disk), a CD (Compact Disk), and an HDD (Hard Disk Drive) for recording data. By driving at, the internal information is read or recorded.

  Further, the recording unit 35 includes a directory changing unit 35a as a directory changing unit for adding, modifying, and deleting a directory (Directory) having a hierarchical structure of data, and an image processing unit as an image processing unit for processing image data. Part 35b. When the information data is an image, the image processing unit 35b performs processing such as image rotation and resizing. This function may be either software or hardware logic.

  Further, the recording device 30 of the present embodiment includes an input device 36 as operation input means for causing the hierarchical structure display control unit 34, the recording unit 35, or the directory changing unit 35a to perform each operation.

  An operation in the recording apparatus 30 of the data transfer system having the above configuration will be described.

  In the recording apparatus 30, the information data stored in the data storage unit 31 and the hierarchical structure of the data are read by the reading unit 33, and the information data and the hierarchical structure of the data are associated with each other and displayed on the display unit 32. .

  Specifically, as shown in the upper part of FIG. 22, on the first screen of the display device 32, folders A, B,... F as the first hierarchy directory are displayed as the data hierarchy. Therefore, for example, when it is desired to display the image B3 which is the information data stored in the folder B, the folder B is selected by the input device 36 by the input device 36 and, for example, enter input is performed. As a result, as shown in the middle part of FIG. 22, the second screen images B1, B2, B3,... B6 are displayed as the data hierarchical structure on the second screen of the display unit 32. Therefore, by selectively inputting the image B3, the image B3 is enlarged and displayed as shown in the lower part of FIG.

  That is, in this embodiment, as shown in FIG. 23, for example, images B1, B2, B3,... B6, which are information data, are stored in a hierarchical structure in the data storage unit 31. In addition, although the thing of the hierarchical structure of 3 layers is shown in the same figure, it is not necessarily restricted to this, Only 1st layer may be sufficient.

  In the above hierarchical structure, as shown in FIG. 24, for example, when video data X is received from a mobile phone 40 as a portable device, the new video data X is to be added to the second hierarchy as an image B7, for example. In this case, the video data X can be added to the second hierarchy by selecting and dragging, for example.

  As an internal process of the hierarchical structure display control unit 34 and the recording unit 35 for displaying these hierarchical structures, as shown in FIG. 25, for example, the digital data of “01, 02, 03,. By using digital values such as “0101, 0102, 0103,...” As the second hierarchy and using digital values such as “010101, 010102, 010103,... Can be associated with a folder name or the like. In addition, when adding the image B7, it is possible to easily add data by using the digital value of 010107 corresponding to the image name.

  In the present embodiment, for example, an operation of reading information data stored in the data storage unit 31 and the hierarchical structure of the data from the mobile phone 40 as a mobile device to the recording device 30, the information data and At least one of an operation of associating and displaying the data hierarchical structure on the display unit 32, an operation of recording the data received from the mobile phone 40 in the hierarchical directory, and adding, modifying, and deleting the hierarchical directory of the data It is possible to perform the operation to perform. In this case, the transmission device 1 or the transmission device 1a as the operation command transmission unit of the mobile phone 40 transmits the operation command to the reception device 2 or the reception device 2a of the recording device 30. Accordingly, each operation can be performed by the directory changing unit 35a that also functions as an operation command directory changing unit.

  On the other hand, in the present embodiment, the communication interface between the recording device 30 and the display unit 32 is not limited to a wired communication interface, and may be, for example, a wireless interface, that is, a wireless communication interface.

  Specifically, as shown in FIG. 26, each of the recording device 30 and the display unit 32 is provided with optical transceivers 37 and 37 as wireless communication interfaces. Thereby, the recording apparatus 30 and the display part 32 can transmit information by wireless communication.

  In the present embodiment, the input device 36 is provided as an operation input means for operating information data. However, the present invention is not limited to this. For example, a button (not shown) may be added to the recording device 30.

  Thus, when information data is written from the mobile phone 40 to the data storage unit 31 of the recording device 30, a data hierarchical structure is created in the data storage unit 31 or does not exist in the data storage unit 31 without using a personal computer. It is possible to classify and write information data using the data hierarchy structure.

  Further, since there is no need to use a personal computer, the recording device 30 can be reduced in size and can be carried around.

  Further, the fact that the information data can be displayed on the display unit 32 in association with the data hierarchical structure of the data storage unit 31 in the recording device 30 is also useful when the user grasps the information data in the data storage unit 31. In particular, it is very useful when the information data is image, moving image or music data.

  In the present embodiment, the data storage unit 31 as a recording medium is configured by a DVD, information data and a hierarchical structure of data are recorded on the DVD by the recording unit 35, and information recorded on the DVD is recorded. The present invention can be applied to an album browsing system including a data transfer system that displays data and a hierarchical structure of the data on the display unit 32.

  Thus, it is possible to provide an album browsing system capable of recording and storing information data and a hierarchical structure of data on a DVD and displaying and browsing the information data and the hierarchical structure of data recorded on the DVD on the display unit 32. it can.

  As described above, the data transfer system of the present invention includes a wireless communication interface and a first device including a storage medium for storing data, a display device that includes the wireless communication interface, displays data, and prints data. A data transfer system including a device, a recording device for recording data, a personal computer, or a second device including any other device having a storage medium, wherein the first device and the second device are The packet (data group) that the transmitter issues when searching for a partner device at the start of communication includes data necessary for parameter setting for data communication and data or commands necessary for connection of an upper layer, and a receiver. When receiving the above packet, the data necessary for parameter setting for data communication A storage unit for storing a program and data for realizing a communication function 1 for returning a packet including data or a response necessary for connection of an upper layer and a data, and a communication control unit for controlling communication are provided, respectively. Both communication control means of the two devices transfer data between the first device and the second device using the communication function 1.

  According to the above invention, as a method for shortening the communication time, a communication function 1 that uses a packet including data necessary for connection in a station discovery command (XID command in IrDA) for searching for a counterpart device at the start of communication. Is used to communicate between the first device and the second device.

  As a result, connection is established simultaneously with station discovery. Therefore, the number of exchange packets required for station discovery and connection from the lower layer to the upper layer (usually connected to the upper layer in order from the lower layer) can be terminated by a pair or one packet. . As a result, the total data transfer time can be shortened.

  Therefore, when the angle between the first device and the second device becomes a certain angle or more, or the distance becomes a certain distance or more, the probability of communication failure can be reduced. .

  A data transfer system according to the present invention includes a wireless communication interface and a first device having a storage medium for storing data, a wireless communication interface, a display device for displaying data, a printing device for printing data, and recording data A data transfer system including a recording device, a personal computer, or a second device including any one of devices having other storage media, wherein the first device and the second device transmit at the start of communication Instead of the packet (data group) issued to search the partner device for the device, the data necessary for parameter setting for data communication and the parameter indicating that the response of the receiver is unnecessary, and the connection of the upper layer A program that implements communication function 2 that sends necessary data or commands to the receiver. Storage means for storing data and communication control means for controlling communication, and both communication control means for the first device and the second device store data between the first device and the second device. Transfer using the communication function 2.

  In the data transfer system of the present invention, the first device and the second device have preset initial values of data required for parameter setting for data communication and data or commands required for connection of an upper layer. The initial value is used when there is no data or command value setting information in the packet issued by the transmitter and the receiver.

  In the data transfer system of the present invention, the first device and the second device have preset initial values of data required for parameter setting for data communication and data or commands required for connection of an upper layer. The initial value is used when there is no data or command value setting information in the packet issued by the transmitter and the receiver.

  According to the above invention, a fixed value may be used in the station discovery and connection packet in the communication between the first device and the second device.

  That is, the packet transfer rate used for station discovery and connection is often slower than the data transfer rate during normal data transfer. For this reason, it is possible to shorten the total data transfer time by setting a fixed value in which the packet length is shortened in advance and using a packet having the fixed value. Therefore, when the angle between the first device and the second device becomes a certain angle or more, or the distance becomes a certain distance or more, the probability of communication failure can be reduced. .

  A data transfer system according to the present invention includes a wireless communication interface and a first device having a storage medium for storing data, a wireless communication interface, a display device for displaying data, a printing device for printing data, and recording data A data transfer system including a recording device, a personal computer, or a second device including any one of devices having other storage media, wherein the first device and the second device transmit at the start of communication The packet (data group) issued to search for the partner device includes the data necessary for parameter setting for data communication and the data or command necessary for the upper layer connection, and the receiver receives the packet. Data required for parameter setting for data communication, and the connection of the upper layer Communication function 1 that returns a packet including necessary data or a response, and a packet (data group) that is sent by a transmitter to search for a partner device at the start of communication, data and reception necessary for parameter setting for data communication The communication function 2 that transmits parameters to the receiver including parameters indicating that no machine response is required, and data or commands required for higher-layer connections, and the presence of the other device are recognized by searching for the other device. Two or more communication functions of the communication function 3 for exchanging data necessary for connection from the lower layer to the upper layer in order, and both communication control of the first device and the second device. The means (first communication control means) is provided depending on the situation of the first device and the second device when performing data communication between the first device and the second device. Communicating from the communication function 1 using one of the communication functions 3.

  According to the above invention, the transmitter tries communication using any one of the communication protocols 1 to 3. When the receiver does not have the communication function 1 or the communication function 2, the communication time shortening effect by the communication function 1 or the communication function 2 cannot be utilized. However, in the present invention, both the first device and the second device have the common communication function 3. Therefore, when neither the communication function 1 or the communication function 2 can be used, communication is possible with the communication function 3. On the other hand, when either the communication function 1 or the communication function 2 can be used, communication that can shorten the communication time is performed. be able to.

  A data transfer system according to the present invention includes a wireless communication interface and a first device having a storage medium for storing data, a wireless communication interface, a display device for displaying data, a printing device for printing data, and recording data A data transfer system including a recording device, a personal computer, or a second device including any one of devices having other storage media, wherein the first device and the second device A storage means for storing a program and data for realizing a communication function 4 for processing a reply of a packet concerning the presence or absence of an error or necessity of retransmission by a single packet, and a communication control means for controlling communication Both the communication control means of the first device and the second device are connected between the first device and the second device. The data transferred using the communication function 4.

  According to said invention, as a method of shortening communication time, it communicates between 1st apparatus and 2nd apparatus using the communication function 4 which communicates many continuous packets.

  As a result, it is possible to reduce the CPU processing by reducing the exchange of response packets and flow control packets that are normally required for each single or small number of packets, and to further reduce the transfer time of the entire data. it can. Therefore, when the angle between the first device and the second device becomes a certain angle or more, or the distance becomes a certain distance or more, the probability of communication failure can be reduced. .

  A data transfer system according to the present invention includes a wireless communication interface and a first device having a storage medium for storing data, a wireless communication interface, a display device for displaying data, a printing device for printing data, and recording data A data transfer system including a recording device, a personal computer, or a second device including any one of devices having other storage media, wherein the first device and the second device Regardless of whether there is an error in the receiver, a storage means for storing the program and data for realizing the communication function 5 for transmitting data only once in one process, and a communication control means for controlling communication, respectively Both communication control means of the first device and the second device are connected between the first device and the second device. The transferred using the communication function 5.

  A data transfer system according to the present invention includes a wireless communication interface and a first device having a storage medium for storing data, a wireless communication interface, a display device for displaying data, a printing device for printing data, and recording data A data transfer system including a recording device, a personal computer, or a second device including any one of devices having other storage media, wherein the first device and the second device The communication function 4 that processes the reply of the packet regarding the presence / absence of the error and the necessity of the retransmission by a single packet, and the data is transmitted only once in one process regardless of the presence / absence of the error in the receiver during data communication Sends the communication function 5 to be transmitted and the reply of the packet regarding the presence / absence of an error and the necessity of retransmission to a plurality of packets. Two or more communication functions among the communication functions 6 to be processed, and both communication control means (second communication control means) of the first device and the second device are the first device and the second device. When performing data communication between the two, communication is performed using any one of the communication function 4 to the communication function 6 provided according to the situation of the first device and the second device.

  A data transfer system according to the present invention includes a wireless communication interface and a first device having a storage medium for storing data, a wireless communication interface, a display device for displaying data, a printing device for printing data, and recording data A data transfer system including a recording device, a personal computer, or a second device including any one of devices having other storage media, wherein the first device and the second device transmit at the start of communication The packet (data group) issued to search for the partner device includes the data necessary for parameter setting for data communication and the data or command necessary for the upper layer connection, and the receiver receives the packet. Data required for parameter setting for data communication, and the connection of the upper layer A communication function 1 for returning a packet including necessary data or a response, and a communication function 4 for processing a reply of a packet regarding the presence / absence of an error and the necessity of retransmission at the time of data communication by a single packet; A storage means for storing a program and data for realizing the communication function 7 having both functions, and a communication control means for controlling communication. The data is transferred between the first device and the second device using the communication function 7.

  According to the above invention, the data transfer time can be further shortened by using the communication function 7 having the features of both the communication function 1 and the communication function 4. Therefore, when the angle between the first device and the second device becomes a certain angle or more, or the distance becomes a certain distance or more, the probability of communication failure can be reduced. .

  A data transfer system according to the present invention includes a wireless communication interface and a first device having a storage medium for storing data, a wireless communication interface, a display device for displaying data, a printing device for printing data, and recording data A data transfer system including a recording device, a personal computer, or a second device including any one of devices having other storage media, wherein the first device and the second device transmit at the start of communication A packet (data group) issued to search for a partner device by the device, data indicating that the parameter setting for data communication and the response of the receiver are not required, and a higher layer connection Data and commands are transmitted, and the transmitter and the receiver are used to transmit and receive the packet. The communication function 8 having both functions of the communication function 2 for completing the connection process and the communication function 5 for transmitting data only once per process regardless of the presence or absence of an error in the receiver during data communication. Each of the first device and the second device includes a storage unit that stores a program and data for realizing the communication and a communication control unit that controls communication, and the communication control unit of each of the first device and the second device includes the first device and the second device. Data is transferred to and from the communication function 8.

  A data transfer system according to the present invention includes a wireless communication interface and a first device having a storage medium for storing data, a wireless communication interface, a display device for displaying data, a printing device for printing data, and recording data A data transfer system including a recording device, a personal computer, or a second device including any one of devices having other storage media, wherein the first device and the second device transmit at the start of communication The packet (data group) issued to search for the partner device includes the data necessary for parameter setting for data communication and the data or command necessary for the upper layer connection, and the receiver receives the packet. Data required for parameter setting for data communication, and the connection of the upper layer Both of the communication function 1 for returning a packet including necessary data or a response and the communication function 4 for processing a reply of a packet regarding the presence / absence of an error and the necessity of retransmission by a single packet at the time of data communication. It shows that the data required for parameter setting for data communication and the response of the receiver are unnecessary for the communication function 7 that the transmitter has and the packet (data group) that the transmitter sends to search for the counterpart device at the start of communication The transmission is performed including parameters and data or commands necessary for upper layer connection, and the transmitter and the receiver complete the connection process in the transmission / reception of the packet, and the receiver at the time of data communication Regardless of whether or not there is an error, both functions with communication function 5 that transmits data once in one process A communication function 8 that performs a search for a partner device and recognizes the presence of the partner device, and then exchanges data necessary for connection from the lower layer to the upper layer in order, and whether there is an error. Two or more communication functions of the communication function 9 having both functions of the communication function 6 for processing a reply of the packet regarding the necessity of retransmission by a plurality of packets are provided, and the first device and the second device Both communication control means are provided with the communication function 7 to the communication function 9 provided according to the situation of the first device and the second device when performing data communication between the first device and the second device. Communication is performed using any one of them.

  Furthermore, in the data transfer system of the present invention, both the communication control means of the portable device and the display device each include an identification signal generating means for generating an identification signal. Determining means for determining whether or not the same type of communication function is possessed, and the determining means transmits the identification signal generated by the identification signal generating means at the start of data transmission. When a communication request using any one of the functions 1 to 9 is made and then an identification signal (response identification signal) is received from the counterpart device, the counterpart device is one of the communication functions 1 to 9 It is determined that the same type of communication function is possessed.

  In the data transfer method of the data transfer system according to the present invention, the portable device makes a communication request using any one of the communication functions 1 to 9 by transmitting an identification signal at the start of data transmission. Thereafter, when the identification signal from the counterpart device is received, it is determined that the counterpart device has any one of the communication functions 1 to 9.

  According to the above invention, the receiving device exists only by transmitting / receiving the identification signal to / from the receiving device, and the receiving device has any one of the communication functions 1 to 9. Can be determined.

  In the data transfer system of the present invention, in the data transfer system described above, the communication control unit of the display device includes an error detection unit that detects an error of the received data, and the display device includes the communication function. As a result of performing data communication using the same type of communication function of any one of 1, 2, 4, 5, 7, and 8 and detecting an error by the error detection means, when all of the data can be received without error, Display at least one of video and / or display indicating successful reception, and if all data cannot be received without error due to some problem, display indicating that reception was not possible The display control means to perform is provided.

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the display device is the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. As a result of detecting errors by performing data communication using the communication function between each other, if all of the data is received without error, at least one of displaying the video or displaying that it was successfully received Either of these is performed, and if all of the data could not be received without error due to some problem, a display indicating that the data could not be received is displayed.

  According to the above invention, when all data is received without error at the receiving station, the video is displayed and / or a display indicating that the data has been normally received is displayed. If the data cannot be received without error, a display indicating that the data could not be received is displayed.

  As a result, the user can immediately determine whether the result of sending data from the transmitting station has succeeded or failed, and if it has failed, the user can retransmit it.

  The data transfer system of the present invention is the data transfer system according to the above, wherein the display control means performs data communication using a communication function of the same type of any one of the communication functions 5 and 8. Discrimination to determine whether the occurrence of data error during reception is when all packets have been received and there is one or more data errors in the packet, and when the rest has not arrived from the mid-data packet When any one of the situations occurs, a different message is displayed corresponding to the situation.

  Further, the data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the display device uses the same type of communication function among the communication functions 5 and 8. The status of occurrence of data error during data reception when communication was performed, when all packets were received, and there was one or more data errors in it, and the rest did not arrive from the packet in the middle of data When one of the situations occurs, a different message is displayed corresponding to the situation.

  According to the above invention, when an error is detected in the data at the receiving station, the occurrence status of the data error is when all the packets are received and there are one or more data errors in the packet. A determination function is provided for determining whether the remainder has not arrived from a packet in the middle of data, and when any one of the situations occurs, a display function for displaying a different message is provided.

  As a result, if all packets have been received and there is one or more data errors in the packet, the error may be due to a long communication distance or disturbance light factors such as fluorescent light, sunlight and incandescent light. By determining that it is increasing, it is displayed to send near, and if the remainder does not arrive from the packet in the middle of the data, by displaying that it was directed in another direction during the communication, Users can re-send them in the most appropriate way. Therefore, it is possible to prevent the communication from failing many times in the same situation.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device is paired with a display unit for displaying video, a video file for transmission, and the video file for transmission. Storage means for storing a display video file having a capacity smaller than that of the trusted video file, and transmitting the video file for transmission when performing wireless transfer, while displaying the video file for display when displaying on the display unit And a file transfer display control means for controlling to display the video.

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the portable device transmits a video file for transmission when performing wireless transfer, while the display unit displays When displaying, the video is displayed using a display video file that is paired with the transmission video file and has a smaller capacity than the transmission video file.

  According to the above invention, when a portable device is provided with a small display unit, a large transmission video file for data transmission and a small video file paired with the transmission video file are stored. When wireless transfer is performed, a large video file is transmitted, and when the display unit of the own device is used, a small video file for display is displayed.

  That is, it is difficult to have a high-speed CPU because the portable device is small, and since the display unit of the portable device is small, a large transmission video file is reduced and displayed. In addition, the display device requires a large video file in order to display a large and beautiful image with high resolution.

  For this reason, by preparing a small file that can be displayed immediately on the mobile device so that it can be previewed, a large file is paired with a large file so that the video you want to send can be quickly selected and transferred to the display device. And can be displayed beautifully.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device generates and stores a display video file from the transmission video file in advance when there is no display video file. Display video file generation storage means is provided.

  Further, the data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the portable device preliminarily displays the display video file from the transmission video file when there is no display video file. Is generated and stored.

  According to the above invention, when there is no display video file, it has a function of automatically generating in advance.

  As a result, when displaying for the first time on the display unit of a portable device, it has conventionally taken time to display a file for display each time it is displayed. Once created, you can quickly view and select the files you want to send.

  Further, the data transfer system of the present invention is the above-described data transfer system, wherein the portable device converts the size of the video file in accordance with the display capability of the display device and then transmits it. It has.

  The data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein the portable device converts the size of the video file in accordance with the display capability of the display device and then transmits the data. To do.

  According to the above invention, in the case of a large video file that exceeds the display capability of the display device, it takes time for communication, and the probability that a communication error occurs during communication can be reduced.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device includes resizing processing means (conversion means) for resizing or processing video data.

  According to the data transfer method of the data transfer system of the present invention, in the data transfer method of the data transfer system described above, the portable device resizes or processes the video data and records it.

  According to the above invention, the portable device resizes or processes and records the video data. Therefore, when transferring to the display device, for example, the transfer can be performed by reducing the size, thereby reducing the transfer time. it can.

  In the data transfer system of the present invention, in the data transfer system described above, both the communication control units of the portable device and the printing apparatus each include an identification signal generating unit that generates an identification signal. , Comprising a determining means for determining whether or not the counterpart device has any one of the communication functions 1 to 9, wherein the determining means is generated by the identification signal generating means at the start of data transmission A communication request using any one of the communication functions 1 to 9 is performed by transmitting the identification signal, and then when the identification signal is received from the counterpart device, the counterpart device receives the communication function 1 It is determined that any one of ˜9 possesses the same type of communication function.

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the portable device transmits the identification signal at the start of data transmission to When a communication request using any one of the communication functions is made and then an identification signal is received from the counterpart device, the counterpart device has the same type of communication protocol as any of the communication functions 1 to 9 Is determined.

  According to the above invention, the receiving device exists only by transmitting / receiving the identification signal to / from the receiving device, and the receiving device has any one of the communication functions 1 to 9. Can be determined.

  In the data transfer system of the present invention, in the above-described data transfer system, the communication control unit of the printing apparatus includes an error detection unit that detects an error of the received data, and the printing apparatus includes the communication function. As a result of performing data communication using the same type of communication function of any one of 1, 2, 4, 5, 7, and 8 and detecting an error by the error detection means, when all of the data can be received without error, Display at least one of printing the video or displaying that it was successfully received. If all of the data could not be received without error due to some problem, display indicating that the video could not be received. The display control means to perform is provided.

  The data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein the printing device is the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. As a result of detecting errors by performing data communication using the communication function between each other, if all of the data can be received without error, at least one of printing the image and displaying that it has been successfully received Either of these is performed, and if all of the data could not be received without error due to some problem, a display indicating that the data could not be received is displayed.

  According to the above invention, when all data can be received at the receiving station without error, the video is printed and / or a display indicating that the data has been normally received is displayed. If the data cannot be received without error, a display indicating that the data could not be received is displayed.

  As a result, the user can immediately determine whether the result of sending data from the transmitting station has succeeded or failed, and if it has failed, the user can retransmit it.

  The data transfer system of the present invention is the data transfer system according to the above, wherein the display control means performs data communication using a communication function of the same type of any one of the communication functions 5 and 8. Discrimination to determine whether the occurrence of data error during reception is when all packets have been received and there is one or more data errors in the packet, and when the rest has not arrived from the mid-data packet When any one of the situations occurs, a different message is displayed in accordance with the situation.

  Further, the data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the printing apparatus uses the same type of communication function of the communication functions 5 and 8 as described above. The status of occurrence of data error during data reception when communication was performed, when all packets were received, and there was one or more data errors in it, and the rest did not arrive from the packet in the middle of data When one of the situations occurs, a different message is displayed corresponding to the situation.

  According to the above invention, when an error is detected in the data at the receiving station, the occurrence status of the data error is when all the packets are received and there are one or more data errors in the packet. A determination function is provided for determining whether the remainder has not arrived from a packet in the middle of data, and when any one of the situations occurs, a display function for displaying a different message is provided.

  As a result, if all packets have been received and there is one or more data errors in the packet, the error may be due to a long communication distance or disturbance light factors such as fluorescent light, sunlight and incandescent light. By determining that it is increasing, it is displayed to send near, and if the remainder does not arrive from the packet in the middle of the data, by displaying that it was directed in another direction during the communication, Users can re-send them in the most appropriate way. Therefore, it is possible to prevent the communication from failing many times in the same situation.

  In the data transfer system of the present invention, in the data transfer system described above, the display control unit uses a communication function of the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. When all data has been received without error based on detection by the error detection means when performing data communication, a display indicating that the data has been received normally is displayed and printing is performed by an external start input operation. Start.

  The data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein the printing device is the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. When data communication using the mutual communication function is performed, if all of the data is received without error, a message indicating that the data has been received normally is displayed, and printing is performed by an external start input operation. Start.

  According to the above invention, when all of the data can be received without error at the receiving station, the display function indicating that the data has been received normally, and after the data has been received normally, it has been received by the start input operation from the outside. Provide a function to start data recording.

  As a result, it is possible to print after confirming that the user has normally received the desired data.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device is paired with a display unit for displaying video, a video file for transmission, and the video file for transmission. Storage means for storing a display video file having a capacity smaller than that of the trusted video file, and transmitting the video file for transmission when performing wireless transfer, while displaying the video file for display when displaying on the display unit And a file transfer display control means for controlling to display the video.

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the portable device transmits a video file for transmission when performing wireless transfer, while the display unit displays When displaying, the video is displayed using a display video file that is paired with the transmission video file and has a smaller capacity than the transmission video file.

  According to the above invention, when a portable device is provided with a small display unit, a large transmission video file for data transmission and a small video file paired with the transmission video file are stored. When wireless transfer is performed, a large video file is transmitted, and when the display unit of the own device is used, a small video file for display is displayed.

  That is, it is difficult to have a high-speed CPU because the portable device is small, and since the display unit of the portable device is small, a large transmission video file is reduced and displayed. In addition, the printing apparatus requires a large video file in order to print with high resolution and high resolution.

  For this reason, by preparing a small file that can be displayed immediately for preview on a mobile device so as to pair with a large file, you can quickly select and transfer the video you want to send on the mobile device to the printing device. And be able to print beautifully.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device generates and stores a display video file from the transmission video file in advance when there is no display video file. Display video file generation storage means is provided.

  Further, the data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the portable device preliminarily displays the display video file from the transmission video file when there is no display video file. Is generated and stored.

  According to the above invention, when there is no display video file, it has a function of automatically generating in advance.

  As a result, when displaying for the first time on the display unit of a portable device, it has conventionally taken time to display a file for display each time it is displayed. Once created, you can quickly view and select the files you want to send.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device includes a size conversion unit that converts the size of the video file in accordance with the printing capability of the printing apparatus and transmits the video file. .

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the portable device converts the size of the video file in accordance with the printing capability of the printing apparatus and then transmits the data file. To do.

  According to the above invention, in the case of a large video file that exceeds the printing capability of the printing apparatus, it takes a long time to communicate, and the probability that a communication error occurs during the communication can be reduced.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device includes resizing processing means for resizing or processing the data and recording the data.

  According to the data transfer method of the data transfer system of the present invention, in the data transfer method of the data transfer system described above, the portable device records the data by resizing or processing the data.

  According to the above invention, since the portable device records data after resizing or processing the data, for example, when transferring the data to the printing apparatus, the data can be transferred at a reduced size, so that the transfer time can be shortened. .

  In the data transfer system of the present invention, in the data transfer system described above, both the communication control units of the portable device and the recording device each include an identification signal generating unit that generates an identification signal. , Comprising a determining means for determining whether or not the counterpart device has any one of the communication functions 1 to 9, wherein the determining means is generated by the identification signal generating means at the start of data transmission A communication request using any one of the communication functions 1 to 9 is performed by transmitting the identification signal, and then when the identification signal is received from the counterpart device, the counterpart device receives the communication function 1 It is determined that any one of ˜9 possesses the same type of communication function.

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the portable device transmits the identification signal at the start of data transmission to When a communication request using any one of the communication protocols is made, and then an identification signal is received from the counterpart device, the counterpart device is the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. It is determined that the communication function is possessed.

  According to the above invention, the receiving device exists only by transmitting / receiving the identification signal to / from the receiving device, and the receiving device has any one of the communication functions 1 to 9. Can be determined.

  In the data transfer system of the present invention, in the data transfer system described above, the communication control unit of the recording apparatus includes an error detection unit that detects an error in received data, and the recording apparatus includes the communication function. As a result of performing data communication using the same type of communication function of any one of 1, 2, 4, 5, 7, and 8 and detecting an error by the error detection means, when all of the data can be received without error, Display at least one of video recording or display indicating successful reception, and if all data could not be received without error due to some problem, display indicating failure to receive The display control means to perform is provided.

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the recording device is the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. As a result of detecting errors by performing data communication using the communication function between each other, if all of the data can be received without error, at least one of recording the video and displaying that it was successfully received Either of these is performed, and if all of the data cannot be received without error due to some problem, a display indicating that the data could not be received is displayed.

  According to the above invention, when all data can be received at the receiving station without error, the video is recorded and / or a display indicating that the data has been normally received is displayed. If the data cannot be received without error, a display indicating that the data could not be received is displayed.

  As a result, the user can immediately determine whether the result of sending data from the transmitting station has succeeded or failed, and if it has failed, the user can retransmit it.

  The data transfer system of the present invention is the data transfer system according to the above, wherein the display control means performs data communication using a communication function of the same type of any one of the communication functions 5 and 8. Discrimination to determine whether the occurrence of data error during reception is when all packets have been received and there is one or more data errors in the packet, and when the rest has not arrived from the mid-data packet When any one of the situations occurs, a different message is displayed in accordance with the situation.

  Further, the data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the recording device uses the same type of communication function among the communication functions 1 to 9. The status of occurrence of data error during data reception when communication was performed, when all packets were received, and there was one or more data errors in it, and the rest did not arrive from the packet in the middle of data When one of the situations occurs, a different message is displayed corresponding to the situation.

  According to the above invention, when an error is detected in the data at the receiving station, the occurrence status of the data error is when all the packets are received and there are one or more data errors in the packet. A determination function is provided for determining whether the remainder has not arrived from a packet in the middle of data, and when any one of the situations occurs, a display function for displaying a different message is provided.

  As a result, if all packets have been received and there are one or more data errors in the packet, the error may be due to a long communication distance or disturbance light such as fluorescent light, sunlight, or incandescent light. By determining that it is increasing, it is displayed to send near, and if the remainder does not arrive from the packet in the middle of the data, by displaying that it was directed in another direction during the communication, Users can re-send them in the most appropriate way. Therefore, it is possible to prevent the communication from failing many times in the same situation.

  In the data transfer system of the present invention, in the data transfer system described above, the display control unit uses a communication function of the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. When all data has been received without error based on detection by the error detection means when performing data communication, a display indicating that the data has been received normally is displayed, and recording is performed by an external start input operation. Start.

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the recording device is the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. When all data can be received without error when performing data communication using the communication function between each other, a display indicating that the data has been received normally is displayed, and recording is performed by an external start input operation. Start.

  According to the above invention, when all of the data can be received without error at the receiving station, the display function indicating that the data has been received normally, and after the data has been received normally, it has been received by the start input operation from the outside. Provide a function to start data recording.

  As a result, it is possible to record after confirming that the user has normally received the desired data.

  The data transfer system of the present invention is the data transfer system described above, wherein the portable device is paired with a display unit for displaying video, a transmission data file, and the transmission data file. Storage means for storing a display data file having a capacity smaller than that of the trusted data file, and transmitting the transmission data file when performing wireless transfer, while displaying the display data file when displaying on the display unit And a file transfer display control means for controlling to display the video.

  The data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein the portable device transmits a data file for transmission when performing wireless transfer, while the display unit displays the data file for transmission. When displaying the video, the video is displayed using a display data file that is paired with the transmission data file and has a smaller capacity than the transmission data file.

  According to the above invention, when a portable device has a small display unit, a large transmission data file for data transmission and a small data file paired with the transmission data file are stored. When wireless transfer is performed, a large data file is transmitted, and when the display unit of the own device is used, a small display data file is displayed.

  That is, it is difficult to have a high-speed CPU because the portable device is small, and since the display unit of the portable device is small, a large transmission data file is reduced and displayed. Also, the recording device requires a large data file in order to record with high resolution and large and beautiful.

  For this reason, by preparing a small file that can be displayed immediately on the mobile device so that it can be previewed, a large file is paired with a large file so that the video you want to send can be quickly selected and transferred to the recording device. Can be recorded beautifully.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device generates and stores a display data file from the transmission data file in advance when there is no display data file. Display data file generation storage means is provided.

  Further, the data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein the portable device preliminarily displays the data file for display from the data file for transmission when there is no data file for display. Is generated and stored.

  According to the above invention, when there is no display data file, it has a function of automatically generating in advance.

  As a result, when displaying for the first time on the display unit of a portable device, it has conventionally taken time to display a file for display each time it is displayed. Once created, you can quickly view and select the files you want to send.

  In the data transfer system of the present invention, in the data transfer system described above, the portable device includes resizing processing means for resizing or processing the data and recording the data.

  According to the data transfer method of the data transfer system of the present invention, in the data transfer method of the data transfer system described above, the portable device records the data by resizing or processing the data.

  According to the above invention, since the portable device records data by resizing or processing the data, for example, when transferring the data to the recording device, the data can be transferred with a reduced size, so that the transfer time can be shortened. .

  The data transfer system according to the present invention is the data transfer system described above, wherein the recording device includes a recording medium for recording data, a display unit for displaying data recorded on the recording medium, and a recording medium. Reading means for reading the stored information data and the hierarchical structure of the data, and a hierarchical structure display control means for displaying the information data and the hierarchical structure of the data in association with each other on the display means. Note that the hierarchical structure of the data on the recording medium is not necessarily a plurality of hierarchies, and may be a single hierarchy.

  The data transfer system of the present invention is the data transfer system described above, wherein the recording device is a recording medium for recording data, and reading means for reading information data stored in the recording medium and a hierarchical structure of the data. And recording means for recording data received from the portable device in a hierarchical directory.

  The data transfer system of the present invention is the data transfer system described above, wherein the recording device is a recording medium for recording data, and reading means for reading information data stored in the recording medium and a hierarchical structure of the data. Directory changing means for adding, modifying, and deleting the directory having the hierarchical structure of the data.

  The data transfer system according to the present invention is the data transfer system described above, wherein the recording device includes an operation input unit for causing the hierarchical structure display control unit, the recording unit, or the directory changing unit to perform each operation. Yes.

  The data transfer system according to the present invention is the data transfer system according to the above, wherein the portable device has an operation command for causing the hierarchical structure display control unit, the recording unit, or the directory changing unit to perform each operation. The operation input means of the recording apparatus receives an operation command from the portable device and causes each operation to be performed.

  In the data transfer system according to the present invention, in the data transfer system described above, the recording apparatus includes image processing means for processing image data.

  In the data transfer system according to the present invention, in the data transfer system described above, the recording apparatus includes a wireless communication interface that performs wireless transmission with the display unit.

  According to the above invention, it has a function of reading information data and a hierarchical structure of the recording medium in the recording apparatus and performing data processing such as addition, correction, and deletion of the information data and the hierarchical structure of the data. This function may be realized by either software or hardware.

  In particular, when the information data is an image, it is preferable to have processing functions such as image rotation and resizing.

  Furthermore, a display means for displaying these information or a display means prepared separately is provided, and information data in the recording medium and a data hierarchical structure are displayed on the display means.

  The communication interface between the recording device and the display means is not limited to a wired communication interface, and may be a wireless interface, that is, a wireless communication interface.

  Further, as an operation input means for operating these information data, for example, a button may be added to the recording device, and an operation command for performing a data operation may be received from a portable device.

  Thus, when writing information data from the portable device to the recording medium of the recording apparatus, a data hierarchical structure is created on the recording medium without using a personal computer, or the data hierarchical structure existing on the recording medium is used. This makes it possible to classify and write information data.

  Further, since it is not necessary to use a personal computer, the recording apparatus can be reduced in size and can be carried around.

  Furthermore, it is also useful when the user grasps the information data of the recording medium that the information data can be displayed on the display means in relation to the data hierarchical structure of the recording medium in the recording apparatus. In particular, it is very useful when the information data is image, moving image or music data.

  In order to solve the above problems, the album browsing system of the present invention is an album browsing system including the data transfer system described above, wherein the recording medium is configured by a DVD, and information data and data are recorded on the DVD. And the information data recorded on the DVD and the hierarchical structure of the data are displayed on the display means.

  As a result, it is possible to provide an album browsing system capable of recording and saving information data and the hierarchical structure of data on a DVD and displaying and browsing the information data and the hierarchical structure of data recorded on the DVD on a display means. .

  In the data transfer system of the present invention, in the data transfer system described above, both communication control means of the portable device and the personal computer each include an identification signal generating means for generating an identification signal, and the portable device and The personal computer includes a determination unit that determines whether the counterpart device has the same communication function of any one of the communication functions 1 to 9, and the determination unit receives the identification signal at the start of data transmission. A request for communication using any one of the communication functions 1 to 9 is made by transmitting the identification signal generated by the generation means, and then when the other device receives the identification signal from the other device, It is determined that any one of the communication functions 1 to 9 has the same type of communication function.

  The data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein the portable device and the personal computer transmit the identification signal at the start of data transmission. A communication request using any one of the communication functions 1 to 9 is performed, and thereafter, when the identification signal from the partner device is received, the partner device performs any one of the communication functions 1 to 9 of the same type. It is determined that it is owned.

  According to the above invention, the receiving device exists only by transmitting / receiving the identification signal to / from the receiving device, and the receiving device has any one of the communication functions 1 to 9. Can be determined.

  In the data transfer system of the present invention, in the data transfer system described above, at least one of the communication control means of the portable device and the personal computer includes an error detection means for detecting an error of the received data, and the error detection The device provided with the means performs the data communication using the communication function of the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8, and detects the error by the error detecting means. When all of the above are received without error, at least one of recording data or displaying that it has been successfully received is performed, and when all data cannot be received without error due to some problem And display control means for displaying that the data could not be received.

  The data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein at least one of the portable device and the personal computer has the communication function 1, 2, 4, 5, 7 or 8 When data communication using the same type of communication function is used to detect an error, if all of the data is received without error, the data has been recorded or has been successfully received. At least one of the display is performed, and when all of the data cannot be received without error due to some problem, the display indicating that the data could not be received is performed.

  According to the above invention, when all the data can be received without error at the receiving station, the data is recorded and / or a display indicating that the data has been normally received is displayed. If the data cannot be received without error, a display indicating that the data could not be received is displayed.

  As a result, the user can immediately determine whether the result of sending data from the transmitting station has succeeded or failed, and if it has failed, the user can retransmit it.

  The data transfer system of the present invention is the data transfer system according to the above, wherein the display control means performs data communication using a communication function of the same type of any one of the communication functions 5 and 8. Discrimination to determine whether the occurrence of data error during reception is when all packets have been received and there is one or more data errors in the packet, and when the rest has not arrived from the mid-data packet When any one of the situations occurs, a different message is displayed in accordance with the situation.

  The data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein at least one of the portable device and the personal computer is the same type of the communication functions 5 and 8. The data error occurrence status during data reception when performing data communication using the communication function between each other has received all packets, and there is one or more data errors in the data, It is determined from the case where the remainder has not arrived from the packet in the middle, and when one of the situations occurs, a different message is displayed corresponding to the situation.

  According to the above invention, when an error is detected in the data at the receiving station, the occurrence status of the data error is when all the packets are received and there are one or more data errors in the packet. A determination function is provided for determining whether the remainder has not arrived from a packet in the middle of data, and when any one of the situations occurs, a display function for displaying a different message is provided.

  As a result, if all packets have been received and there is one or more data errors in the packet, the error may be due to a long communication distance or disturbance light factors such as fluorescent light, sunlight and incandescent light. By determining that it is increasing, it is displayed to send near, and if the remainder does not arrive from the packet in the middle of the data, by displaying that it was directed in another direction during the communication, Users can re-send them in the most appropriate way. Therefore, it is possible to prevent the communication from failing many times in the same situation.

  In the data transfer system of the present invention, in the data transfer system described above, the display control unit uses a communication function of the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. When all data has been received without error based on detection by the error detection means when performing data communication, a display indicating that the data has been received normally is displayed, and recording is performed by an external start input operation. Start.

  The data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein at least one of the portable device and the personal computer has the communication function 1, 2, 4, 5, When data communication using the communication function of the same type of either 7, 8 is performed, if all of the data can be received without error, a display indicating that the data has been received normally is displayed, and the external Recording is started by a start input operation from.

  According to the above invention, when all of the data can be received without error at the receiving station, the display function indicating that the data has been received normally, and after the data has been received normally, it has been received by the start input operation from the outside. Provide a function to start data recording.

  As a result, it is possible to record after confirming that the user has normally received the desired data.

  In the data transfer system of the present invention, in the data transfer system described above, the communication control unit of each portable device includes an identification signal generating unit that generates an identification signal, and each portable device is a counterpart device. Includes a determination unit that determines whether any one of the communication functions 1 to 9 has the same type of communication function, and the determination unit generates an identification signal generated by the identification signal generation unit at the start of data transmission. Is sent to the communication function 1 through 9, and when the identification signal is received from the counterpart device, the counterpart device receives the communication function 1-9. It is determined that any one of the same types of communication functions is possessed.

  The data transfer method of the data transfer system according to the present invention is the data transfer method of the data transfer system described above, wherein each of the portable devices transmits the identification signal at the start of data transmission, thereby transmitting the communication functions 1-9. When a communication request using any one of the communication functions is performed, and then an identification signal is received from the counterpart device, the counterpart device has one of the communication functions 1 to 9 and the same type of communication function. It is determined that there is.

  According to the above invention, the receiving device exists only by transmitting / receiving the identification signal to / from the receiving device, and the receiving device has any one of the communication functions 1 to 9. Can be determined.

  In the data transfer system of the present invention, in the data transfer system described above, at least one communication control unit of each portable device includes an error detection unit that detects an error in the received data, and the error detection unit includes the error detection unit. The equipment provided includes data communication using the same type of communication function of any one of the communication functions 1, 2, 4, 5, 7, and 8, and the error detection means detects an error. Is received without error, at least one of recording data or displaying that it has been successfully received is displayed. If all data cannot be received without error due to some problem, it is received. Display control means for performing a display indicating that the operation could not be performed is provided.

  Further, the data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein at least one of the portable devices has the communication function 1, 2, 4, 5, 7, 8 If any of the data is received without error as a result of data communication using the same type of communication function, the data is recorded or displayed indicating that the data has been received normally If all of the data could not be received without error due to some problem, a display indicating that the data could not be received is displayed.

  According to the above invention, when all the data can be received without error at the receiving station, the data is recorded and / or a display indicating that the data has been normally received is displayed. If the data cannot be received without error, a display indicating that the data could not be received is displayed.

  As a result, the user can immediately determine whether the result of sending data from the transmitting station has succeeded or failed, and if it has failed, the user can retransmit it.

  The data transfer system of the present invention is the data transfer system according to the above, wherein the display control means performs data communication using a communication function of the same type of any one of the communication functions 5 and 8. Discrimination to determine whether the occurrence of data error during reception is when all packets have been received and there is one or more data errors in the packet, and when the rest has not arrived from the mid-data packet When any one of the situations occurs, a different message is displayed in accordance with the situation.

  Further, the data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein at least one of the portable devices is the same type of the communication functions 5 and 8. When data communication using the communication function is performed, the data error occurrence status during data reception is that all packets have been received, and there are one or more data errors in the packet. It is determined from the case where the remainder has not arrived from the packet, and when one of the situations occurs, a different message is displayed corresponding to the situation.

  According to the above invention, when an error is detected in the data at the receiving station, the occurrence status of the data error is when all the packets are received and there are one or more data errors in the packet. A determination function is provided for determining whether the remainder has not arrived from a packet in the middle of data, and when any one of the situations occurs, a display function for displaying a different message is provided.

  As a result, if all packets have been received and there is one or more data errors in the packet, the error may be due to a long communication distance or disturbance light factors such as fluorescent light, sunlight and incandescent light. By determining that it is increasing, it is displayed to send near, and if the remainder does not arrive from the packet in the middle of the data, by displaying that it was directed in another direction during the communication, Users can re-send them in the most appropriate way. Therefore, it is possible to prevent the communication from failing many times in the same situation.

  In the data transfer system of the present invention, in the data transfer system described above, the display control unit uses a communication function of the same type of any one of the communication functions 1, 2, 4, 5, 7, and 8. When all data has been received without error based on detection by the error detection means when performing data communication, a display indicating that the data has been received normally is displayed, and recording is performed by an external start input operation. Start.

Further, the data transfer method of the data transfer system of the present invention is the data transfer method of the data transfer system described above, wherein at least one of the portable devices has the communication function 1, 2, 4, 5, 7, 8 When data communication using the same type of communication function is performed, if all of the data can be received without error, a message indicating that the data has been received normally is displayed. Recording is started by a start input operation.
According to the above invention, when all of the data can be received without error at the receiving station, the display function indicating that the data has been received normally, and after the data has been received normally, it has been received by the start input operation from the outside. Provide a function to start data recording.

  As a result, it is possible to record after confirming that the user has normally received the desired data.

  In the data transfer system according to the present invention, in the data transfer system described above, the wireless communication is infrared (IR) communication.

  According to the data transfer method of the data transfer system of the present invention, in the data transfer method of the data transfer system described above, the wireless communication is infrared (IR) communication.

  According to the above invention, as described above, there is the IrDA standard for data transfer using infrared rays. Therefore, for example, with respect to a device adopting a transfer method compliant with the IrDA standard, the communication between the devices may be performed when the angle between the devices becomes a certain angle or more, or the distance becomes a certain distance or more. Can reduce the probability of failure.

  In the data transfer system of the present invention, in the above-described data transfer system, the communication functions 3, 6, and 9 are communication functions defined by IrDA (Infrared Data Association).

  According to the data transfer method of the data transfer system of the present invention, in the data transfer method of the data transfer system described above, the communication functions 3, 6 and 9 are communication functions defined by IrDA (Infrared Data Association). .

  According to the above invention, since the communication functions 3, 6, and 9 are communication functions defined by IrDA (Infrared Data Association), devices that adopt a general IrDA standard for data transfer using infrared rays. On the other hand, when the angle between devices becomes a certain angle or more, or the distance becomes a certain distance or more, the probability of communication failure can be reduced.

  Further, when the communication functions 3, 6, and 9 are set to the IrDA protocol, the physical functions of the IrDA can be used for the communication functions 1, 2, 4, 5, 7, and 8 by simply changing the software. Therefore, the communication functions 1, 2, 4, 5, 7, and 8 can be easily created by changing or adding a part of the IrDA protocol layer.

  The data transfer program of the present invention is a computer program for causing a computer to function as each means of the data transfer system in order to solve the above-described problems.

  According to the invention described above, the data transfer system can be realized by realizing each means of the data transfer system by a computer.

  The recording medium of the present invention is a computer-readable recording medium on which a data transfer program for operating the above-described data transfer system is recorded by causing a computer to realize the above-described means.

  According to the above invention, the data transfer system can be realized on a computer by the data transfer program read from the recording medium.

  The transmitter of the present invention is a transmitter that establishes communication of a plurality of communication layers with a receiver and performs communication, and includes a connection request including commands and data necessary for connection of a plurality of adjacent communication layers. Connection request generation means for generating the connection request, and connection request transmission means for transmitting the connection request to the receiver.

  Furthermore, the transmitter of the present invention is characterized in that the connection request generation means includes a command for requesting the receiver to transmit a response to the connection request in the connection request.

  Furthermore, the transmitter of the present invention is characterized by comprising connection setting means for performing setting in each communication layer according to the response to the connection request received from the receiver.

  Furthermore, the transmitter of the present invention is characterized by comprising connection setting means for performing setting in accordance with the connection request in each communication layer without receiving a response to the connection request from the receiver.

  Furthermore, the transmitter of the present invention is characterized in that the connection request generating means includes a command for requesting the receiver to transmit a response to the connection request when data is exchanged.

  Further, the transmitter of the present invention is a transmitter that establishes communication of a plurality of communication layers with a receiver and performs communication, and includes commands and data necessary for disconnecting a plurality of adjacent communication layers. A disconnect request generating means for generating a disconnect request and a disconnect request transmitting means for transmitting the disconnect request to a receiver are provided.

  The transmitter of the present invention is a transmitter that establishes communication of a plurality of communication layers with a receiver and performs communication, and includes commands and data necessary for connection of a plurality of adjacent communication layers. When generating the connection request, the first connection request generating means for generating a connection request, the second connection request generating means for generating a connection request including a command and data necessary for connection for each communication layer, and the connection request A selection means for selecting one of the first and second connection request generation means, and the connection request generated by the first or second connection request generation means selected by the selection means to the receiver. And a connection request transmitting means for transmitting.

  Furthermore, the transmitter of the present invention is characterized in that the communication is infrared communication.

  Furthermore, the transmitter of the present invention is a mobile phone.

  Furthermore, the transmitter of the present invention is an image pickup device that transmits a captured image to a receiver.

  The communication program of the present invention is a communication program for operating the above-described transmitter, and is a communication program for causing a computer to function as each means described above.

  Further, the communication method of the present invention is a communication method of a transmitter that establishes communication of a plurality of communication layers with a receiver to perform communication, and a plurality of adjacent communication layers are connected by a connection request generation unit. And a step of generating a connection request including a command and data necessary for the connection, and a step of transmitting the connection request to a receiver by a connection request transmission unit.

  In addition, the receiver of the present invention is a receiver that establishes communication of a plurality of communication layers with a transmitter and performs communication, and includes commands and data necessary for connection of a plurality of adjacent communication layers. Connection request receiving means for receiving a connection request from a transmitter, and connection establishment means for extracting a command and data from the connection request and establishing a connection of each communication layer based on the command and data. It is said.

  Furthermore, the receiver of the present invention is characterized by comprising response transmission means for transmitting the response when the connection request includes a command for requesting transmission of a response to the connection request.

  Furthermore, the receiver of the present invention is characterized by comprising response transmission means for transmitting the response when the connection request includes a command for requesting transmission of a response at the time of data exchange.

  The receiver of the present invention is a receiver that establishes a connection of a plurality of communication layers with a transmitter and communicates with the transmitter, and a command necessary for disconnecting a plurality of adjacent communication layers and A disconnect request receiving means for receiving a disconnect request including data from a transmitter; and a disconnect means for extracting a command and data from the disconnect request and disconnecting each communication layer based on the command and data. It is characterized by.

  In addition, the receiver of the present invention is a receiver that establishes communication of a plurality of communication layers with a transmitter and performs communication, and includes commands and data necessary for connection of a plurality of adjacent communication layers. A connection request receiving means for receiving a connection request from a transmitter or receiving a connection request including a command and data necessary for connection from the transmitter for each communication layer, and extracting the command and data from the connection request. And connection establishment means for establishing a connection of each communication layer based on the command and data.

  Furthermore, the receiver of the present invention is characterized in that the communication is infrared communication.

  Furthermore, the receiver of the present invention is a broadcast receiving device that receives broadcasts from a transmitter.

  Furthermore, the receiver of the present invention is a broadcast recording device that records a broadcast received from a transmitter.

  The communication program of the present invention is a communication program for operating the above receiver, and is a communication program for causing a computer to function as each means described above.

  Further, the communication method of the present invention is a communication method of a receiver that establishes communication of a plurality of communication layers with a transmitter and performs communication, and a plurality of adjacent communication layers are connected by a connection request receiving unit. Receiving a connection request including a command and data necessary for the connection from the transmitter, and extracting the command and data from the connection request by the connection establishing means, and connecting each communication layer based on the command and data And establishing a step.

  Further, the communication system of the present invention is a communication system including a transmitter and a receiver that establish communication with each other by establishing a connection between a plurality of communication layers, and the transmitter is connected to a plurality of adjacent communication layers. A connection request generating means for generating a connection request including a command and data necessary for the communication, and a connection request transmitting means for transmitting the connection request to a receiver, wherein the receiver is connected to a plurality of adjacent communication layers. Connection request receiving means for receiving a connection request including a necessary command and data from a transmitter, and connection establishment means for extracting a command and data from the connection request and establishing a connection of each communication layer based on the command and data It is characterized by providing these.

  Thereby, a plurality of communication layers can be connected by one connection request. Therefore, it is possible to combine commands and data for connecting a plurality of communication layers into one connection request.

  Therefore, the time required for establishing a connection can be shortened compared to a protocol that transmits a connection request for each communication layer as in conventional IrDA. Therefore, even if it is disconnected in the middle of data exchange, it is possible to connect again in a short time and resume data exchange.

  Furthermore, the communication system of the present invention can be similarly configured for other requests such as a disconnection request for disconnecting a connection.

  Specific embodiments or examples made in the section of the detailed description of the invention are intended to clarify the technical contents of the present invention, and are limited to such specific examples and are interpreted in a narrow sense. The present invention should not be changed, and various modifications can be made within the spirit of the present invention and the scope of the claims.

  According to the transmitter, receiver, communication system, communication method, and communication program of the present invention, a connection can be established in a short time. Therefore, for example, the present invention can be suitably used for communication from a portable device to a portable device, from a portable device to a printer, from a portable device to a display device, from a portable device to an AV device (recording device) such as a DVD recorder.

FIG. 1A is a sequence diagram showing a conventional data transfer method based on the IrDA protocol. FIG. 1B shows a data transfer system and a data transfer method according to an embodiment of the present invention, and is a sequence diagram showing a data transfer method using the communication function 1. FIG. 2 is a configuration diagram showing the data transfer system including a portable device and a display device which is an electronic device. FIG. 3 is a configuration diagram showing the data transfer system including a portable device and a printing apparatus which is an electronic device. FIG. 4 is a configuration diagram showing the data transfer system including a portable device and a recording device which is an electronic device. FIG. 5 is a block diagram showing the data transfer system including a portable device and a personal computer which is an electronic device. FIG. 6 is a configuration diagram illustrating the data transfer system including a mobile device and another mobile device that is an electronic device. FIG. 7 is a block diagram showing a transmitting device of the portable device. FIG. 8 is a block diagram showing a receiving device of the recording apparatus. FIG. 9A is a sequence diagram showing a conventional data transfer method based on the IrDA protocol. FIG. 9B is a sequence diagram showing a data transfer method by the communication function 4. FIG. 10A is a sequence diagram showing a conventional data transfer method based on the IrDA protocol. FIG. 10B is a sequence diagram showing a data transfer method by the communication function 7. FIG. 10C is a sequence diagram illustrating a data transfer method using the communication function 8. FIG. 11A is a sequence diagram of connection establishment used in the communication functions 1 and 7. FIG. 11B is a sequence diagram of connection establishment used in the communication functions 2 and 8. FIG. 11C shows a packet format for connection establishment used in the communication functions 1, 2, 7, and 8. The lower response packet is not used in the communication functions 2 and 8. FIG. 12 is a sequence diagram showing another embodiment of the data transfer system and the data transfer method thereof according to the present invention. FIG. 13 is a block diagram showing a transmitting device of the portable device. FIG. 14 is a block diagram showing a receiving device of the recording apparatus. FIG. 15 is a diagram illustrating a pattern of tone signals transmitted and received between a transmission device and a reception device. FIG. 16A shows still another embodiment of the data transfer system and the data transfer method thereof according to the present invention, and shows the receiving device status regarding the successful data transfer when the electronic device is a display device. It is explanatory drawing shown. FIG. 16B shows still another embodiment of the data transfer system and the data transfer method according to the present invention, and the receiving device state regarding the unsuccessful data transfer when the electronic device is a display device. It is explanatory drawing which shows. FIG. 16C shows still another embodiment of the data transfer system and the data transfer method according to the present invention, and reception of success / failure of data transfer when the electronic device is a display device. It is explanatory drawing which shows an apparatus state. FIG. 17A is an explanatory diagram illustrating a receiving device state regarding a successful data transfer when the electronic device is a printing device in the data transfer system and the data transfer method thereof. FIG. 17B is an explanatory diagram illustrating a receiving device state regarding unsuccessful data transfer when the electronic device is a printing device in the data transfer system and the data transfer method thereof. FIG. 17C is an explanatory diagram showing a receiving device state regarding unsuccessful data transfer when the electronic device is a printing device in the data transfer system and the data transfer method thereof. FIG. 18A is an explanatory diagram showing a receiving device state regarding a successful data transfer when the electronic device is a recording device in the data transfer system and the data transfer method thereof. FIG. 18B is an explanatory diagram illustrating a receiving device state regarding unsuccessful data transfer when the electronic device is a recording device in the data transfer system and the data transfer method thereof. FIG. 18C is an explanatory diagram showing a receiving device state regarding unsuccessful data transfer when the electronic device is a recording device in the data transfer system and the data transfer method thereof. FIG. 19A is an explanatory diagram showing a receiving device state regarding a successful data transfer when the electronic device is a personal computer in the data transfer system and the data transfer method thereof. FIG. 19B is an explanatory diagram showing a receiving device state regarding unsuccessful data transfer when the electronic device is a personal computer in the data transfer system and the data transfer method thereof. FIG. 19 (c) is an explanatory diagram showing a receiving device state regarding unsuccessful data transfer when the electronic device is a personal computer in the data transfer system and the data transfer method thereof. FIG. 20A is an explanatory diagram illustrating a receiving device state regarding a successful data transfer when the electronic device is another portable device in the data transfer system and the data transfer method thereof. FIG. 20B is an explanatory diagram showing a receiving device state regarding unsuccessful data transfer when the electronic device is another portable device in the data transfer system and the data transfer method thereof. FIG. 20C is an explanatory diagram showing a receiving device state regarding unsuccessful data transfer when the electronic device is another portable device in the data transfer system and the data transfer method thereof. FIG. 21 shows still another embodiment of the data transfer system according to the present invention, and is a block diagram showing the configuration of the recording apparatus. FIG. 22 is an explanatory diagram showing a state in which information data and a hierarchical structure of the data are displayed in association with each other on the display device of the recording device in the data transfer system. FIG. 23 is an explanatory diagram showing the hierarchical structure of the data. FIG. 24 is an explanatory diagram showing a state in which an image, which is information data received from a mobile phone, is added in the hierarchical structure of the data. FIG. 25 is an explanatory diagram showing internal processing of the hierarchical structure of the data. FIG. 26 is an explanatory diagram illustrating a state in which wireless communication is performed between the recording device and the display device in the data transfer system. FIG. 27 is a sequence diagram showing a procedure until a data transfer state in the IrDA standard is established. FIG. 28 is a configuration diagram of frames exchanged between devices until a data transfer state in the IrDA standard is established. FIG. 29 is a diagram showing the correlation between data pulses and data for the 4PPM system. FIG. 30 is a diagram showing an IrDA standard frame. FIG. 31 is a sequence diagram for explaining a general procedure of data transfer in the IrDA standard. FIG. 32A is a diagram showing an IrDA data exchange sequence. FIG. 32B is a diagram showing a data exchange sequence used in the communication functions 4 and 7. FIG. 32C is a diagram showing a data exchange sequence used in the communication functions 4 and 7. FIG. 33A shows a data exchange sequence used in the communication functions 5 and 8. FIG. 33B is a diagram showing a data exchange sequence used in the communication functions 5 and 8. FIG. 34 is a schematic diagram showing the correspondence between the OSI 7 hierarchical model, the IrDA hierarchy, and the hierarchy of the present invention. FIG. 35A is a diagram showing a packet format used in data exchange used in IrDA. FIG. 35 (b) is a diagram showing a packet format used in data exchange according to the present invention. FIG. 36A is a diagram showing an IrDA cutting sequence. FIG. 36B is a diagram showing a packet format used for the IrDA disconnection sequence. FIG. 37A is a diagram showing a disconnection sequence when the communication functions 1 and 7 are connected. FIG. 37 (b) is a diagram showing a disconnection sequence when the communication functions 2 and 8 are connected. FIG. 37 (c) shows a packet format of a disconnection sequence when the communication functions 1, 2, 7, and 8 are connected. The lower response packet is not used when the communication functions 2 and 8 are connected. FIG. 38 is a sequence diagram showing the functions (commands and messages) between the layers and the flow of packets in the IrDA connection sequence. FIG. 39 is a sequence diagram showing the functions (commands and messages) between the layers and the flow of packets during the connection sequence of the communication functions 1 and 7. FIG. 40A is an explanatory diagram showing changes in data in the functions between the layers indicated by the right-pointing arrows in FIGS. 39 and 41 in the connection sequence of the communication functions 1, 2, 7, and 8. FIG. 40B is a diagram illustrating a change in data in a function between the layers indicated by the left-pointing arrows of the communication functions 1 and 7. FIG. 41 is a sequence diagram showing functions (commands, messages) and packet flows between layers during the connection sequence of the communication functions 2 and 8. FIG. 42 is a sequence diagram showing the flow of functions (commands, messages) and packets between layers during IrDA data exchange. FIG. 43 is a sequence diagram showing the functions (commands and messages) between the layers and the flow of packets during data exchange of the communication functions 4 and 7. 44 is a diagram showing changes in data in the functions between the layers in FIGS. 43 and 45 when data is exchanged in the communication functions 4, 5, 7, and 8. FIG. 45 is a sequence diagram showing functions (commands and messages) between the layers and the flow of packets during data exchange of the communication functions 5 and 8. FIG. 46 is a sequence diagram showing the functions (commands and messages) between the layers and the packet flow during the IrDA disconnection sequence. FIG. 47 is a sequence diagram showing functions (commands and messages) between the layers and the flow of packets during the disconnection sequence of the communication functions 1 and 7. FIG. 48A is an explanatory diagram showing changes in data in the functions between the layers indicated by the right-pointing arrows in FIGS. 47 and 49 during the disconnection sequence of the communication functions 1, 2, 7, and 8. FIG. FIG. 48B is an explanatory diagram showing changes in data in the functions between the layers indicated by the left-pointing arrows of the communication functions 1 and 7. FIG. 49 is a sequence diagram showing the functions (commands and messages) between the layers and the flow of packets during the disconnection sequence of the communication functions 2 and 8. FIG. 50 is a schematic diagram showing connection request function data and connection parameter delivery in the primary station of the communication functions 1, 2, 7, and 8. FIG. 51 is a schematic diagram showing delivery of connection parameters of a connection request function in a secondary station of communication functions 1, 2, 7, and 8. FIG. 52 is a schematic diagram showing the connection confirmation function in the primary station of the communication functions 1 and 7 and the connection notification function data and the connection parameters in the secondary stations of the communication functions 1, 2, 7 and 8. FIG. 53 is a schematic diagram showing data transfer of the connection response function in the secondary station of the communication functions 1 and 7. FIG. 54 is a schematic diagram showing delivery of connection parameters of the connection confirmation function in the primary station of the communication functions 2 and 8. FIG. 55 is a schematic diagram showing connection request function data and connection parameter delivery in the primary station of communication functions 1, 2, 7, and 8 when connection parameters are shared between layers, which is a modification of the embodiment. It is. FIG. 56 is a schematic diagram illustrating connection notification function data and connection parameter passing in the secondary stations of the communication functions 1, 2, 7, and 8 when connection parameters are shared between layers, which is a modification of the embodiment. It is. FIG. 57 is a modification of the embodiment, and connection request function data and connection parameter delivery in the primary station of communication functions 1, 2, 7, and 8 when each layer separately passes connection parameters to lower layers. It is a schematic diagram showing. FIG. 58 is a functional block diagram illustrating a configuration example of a communication system according to the embodiment. In the figure, a communication layer of a device having only IrDA, a device having the configuration of IrDA and the present invention, and a device having only the configuration of the present invention is shown in conformity with the OSI 7 hierarchy.

Explanation of symbols

1,1a Transmitting equipment (communication device)
2,2a Receiving device (communication device)
11.11a CPU (conversion means)
13, 13a controller (first communication control means, second communication control means)
21 CPU (discriminating means)
23, 23a controller (first communication control means, second communication control means)
1100 Transmitter (communication device)
1200 Receiver (communication device)
1131 Protocol selection unit (first communication control means, second communication control means)

Claims (24)

A first communication function for generating and transmitting a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers;
A second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, generates a connection request that does not include a connection response request, and transmits the connection request;
And a connection request including a command and data necessary for connection for each communication layer is generated and provided with at least one of the third communication functions for performing transmission,
Comprising a first communication control means for selecting one of the communication functions provided;
And,
A fourth communication function for generating and transmitting a connection request including a command for requesting one response to data continuously transmitted by being divided into a plurality of packets;
A fifth communication function that generates and transmits a connection request including a command that does not request a response to data continuously transmitted by being divided into a plurality of packets;
In addition, a connection request including a command for requesting one response is generated for one packet, and at least any two of the sixth communication functions for performing transmission are provided.
A second communication control means for selecting one of the communication functions provided;
The communication apparatus, wherein the first communication control means and the second communication control means select a communication function according to a file format of data to be transmitted.   When the file format is a multimedia-related file, the first communication control means and the second communication control means select at least one of the second communication function and the fifth communication function. The communication device according to claim 1.   The communication apparatus according to claim 1, wherein the first communication control unit and the second communication control unit determine a communication function to be used according to an application that performs data transmission.   When the application is a slide show, the first communication control unit and the second communication control unit select at least one of the second communication function and the fifth communication function. Item 4. The communication device according to Item 3. A first communication function for generating and transmitting a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers;
A second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, generates a connection request that does not include a connection response request, and transmits the connection request;
And generating a connection request including a command and data necessary for connection for each communication layer, and including at least any two of the third communication functions for performing transmission,
And,
A fourth communication function for generating and transmitting a connection request including a command for requesting one response to data continuously transmitted by being divided into a plurality of packets;
A fifth communication function that generates and transmits a connection request including a command that does not request a response to data continuously transmitted by being divided into a plurality of packets;
And a communication method in a communication device having at least any two of the sixth communication functions for generating and transmitting a connection request including a command for requesting one response to one packet. ,
According to the file format of the data to be transmitted, one is selected from the communication functions provided among the first to third communication functions,
And,
A communication method, wherein one of the fourth to sixth communication functions is selected according to a file format of data to be transmitted. A first communication function for generating and transmitting a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers;
A second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, generates a connection request that does not include a connection response request, and transmits the connection request;
And a connection request including a command and data necessary for connection for each communication layer is generated and provided with at least one of the third communication functions for performing transmission,
Comprising a first communication control means for selecting one of the communication functions provided;
And,
A fourth communication function for generating and transmitting a connection request including a command for requesting one response to data continuously transmitted by being divided into a plurality of packets;
A fifth communication function that generates and transmits a connection request including a command that does not request a response to data continuously transmitted by being divided into a plurality of packets;
In addition, a connection request including a command for requesting one response is generated for one packet, and at least any two of the sixth communication functions for performing transmission are provided.
A second communication control means for selecting one of the communication functions provided;
The first communication control means and the second communication control means transmit an identification signal to the counterpart device to make a communication request, and then, based on the received response identification signal, a communication function provided in the counterpart device And a communication function of the same type as the communication function of the counterpart device is selected.   The communication apparatus according to claim 6, wherein the identification signal is a tone signal.   The communication apparatus according to claim 6, wherein the identification signal is a packet to be connected by the first communication function.   The first communication control means and the second communication control means select the third communication function and the sixth communication function when the response identification signal is not returned. Item 7. The communication device according to Item 6. A first communication function for generating and transmitting a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers;
A second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, generates a connection request that does not include a connection response request, and transmits the connection request;
And generating a connection request including a command and data necessary for connection for each communication layer, and including at least any two of the third communication functions for performing transmission,
And,
A fourth communication function for generating and transmitting a connection request including a command for requesting one response to data continuously transmitted by being divided into a plurality of packets;
A fifth communication function that generates and transmits a connection request including a command that does not request a response to data continuously transmitted by being divided into a plurality of packets;
And a communication method in a communication device having at least any two of the sixth communication functions for generating and transmitting a connection request including a command for requesting one response to one packet. ,
Sending an identification signal to the counterpart device to make a communication request, and then determining the communication function of the counterpart device based on the received response identification signal and selecting the same type of communication function as that of the counterpart device As described above, selecting one of the communication functions included in the first to third communication functions and selecting one of the communication functions included in the fourth to sixth communication functions. A characteristic communication method. Receiving a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracting a command and data from the connection request, performing a connection response, and each communication layer based on the command A first communication function for establishing a connection of
Receives a connection request including a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command. A second communication function to be established;
And receiving a connection request including a command and data necessary for connection for each communication layer, extracting the command and data from the connection request for each communication layer, and establishing a connection of each communication layer based on the command. With at least any two of the communication functions of
Comprising a first communication control means for selecting one of the communication functions provided;
And,
A fourth communication function for transmitting one response to data continuously received after being divided into a plurality of packets;
A fifth communication function which does not transmit a response to data received continuously after being divided into a plurality of packets;
And including at least any two of the sixth communication functions for transmitting one response to one packet,
A second communication control means for selecting one of the communication functions provided;
The first communication control unit and the second communication control unit are configured to transmit a response identification signal corresponding to a communication function included in the own device in response to the identification signal received from the counterpart device. Communication device. Receiving a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracting a command and data from the connection request, performing a connection response, and each communication layer based on the command A first communication function for establishing a connection of
Receives a connection request including a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command. A second communication function to be established;
And receiving a connection request including a command and data necessary for connection for each communication layer, extracting the command and data from the connection request for each communication layer, and establishing a connection of each communication layer based on the command. With at least any two of the communication functions of
And,
A fourth communication function for transmitting one response to data continuously received after being divided into a plurality of packets;
A fifth communication function which does not transmit a response to data received continuously after being divided into a plurality of packets;
And a communication method in a communication device having at least any two of the sixth communication functions for transmitting one response to one packet,
A communication method characterized by transmitting a response identification signal corresponding to a communication function provided in the own device in response to an identification signal received from a counterpart device. Receiving a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracting a command and data from the connection request, performing a connection response, and each communication layer based on the command A first communication function for establishing a connection of
Receives a connection request including a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command. A second communication function to be established;
And having at least one of the third communication functions for transmitting one response to data received continuously after being divided into a plurality of packets,
Provided with a determining means for determining the status of a communication error during data reception,
A communication apparatus characterized in that when a communication error occurs, the operation after the communication error is changed according to the state of the communication error.   The communication apparatus according to claim 13, wherein the operation to be changed is at least one of a cause of an error notified to a user and a coping method.   15. The communication apparatus according to claim 14, wherein when an error is detected even though all frames have arrived, information prompting the user to reduce the communication distance is notified to the user.   15. The communication apparatus according to claim 14, wherein when an error is detected without being received from the middle of the frame, the user is notified that the transmitter is directed in a different direction during the communication. Receiving a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracting a command and data from the connection request, performing a connection response, and each communication layer based on the command A first communication function for establishing a connection of
Receives a connection request including a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command. A second communication function to be established;
And a communication method in a communication apparatus including at least one of the third communication functions for transmitting one response to data continuously received after being divided into a plurality of packets,
A communication method characterized in that when a communication error occurs during data reception, the status of the communication error is determined, and the operation after the communication error is changed according to the status of the communication error. A first communication function for generating and transmitting a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers;
A second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, generates a connection request that does not include a connection response request, and transmits the connection request;
And at least one of the third communication functions for generating and transmitting a connection request including a command for requesting one response to data continuously transmitted by being divided into a plurality of packets With
A communication apparatus comprising conversion means for converting the data size of a file to be transmitted in accordance with the capability of a counterpart device. A first communication function for generating and transmitting a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers;
A second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, generates a connection request that does not include a connection response request, and transmits the connection request;
And at least one of the third communication functions for generating and transmitting a connection request including a command for requesting one response to data continuously transmitted by being divided into a plurality of packets With
A communication apparatus characterized in that communication is performed by infrared rays. A first communication function for generating and transmitting a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers;
A second communication function that includes a command and data necessary for connection of a plurality of adjacent communication layers, generates a connection request that does not include a connection response request, and transmits the connection request;
And at least one of the third communication functions for generating and transmitting a connection request including a command for requesting one response to data continuously transmitted by being divided into a plurality of packets With
A communication apparatus for transmitting captured image data by any one of the communication functions described above. Receiving a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracting a command and data from the connection request, performing a connection response, and each communication layer based on the command A first communication function for establishing a connection of
Receives a connection request including a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command. A second communication function to be established;
And having at least one of the third communication functions for transmitting one response to data received continuously after being divided into a plurality of packets,
A communication apparatus characterized in that communication is performed by infrared rays. Receiving a connection request including a command, data, and a connection response request necessary for connection of a plurality of adjacent communication layers, extracting a command and data from the connection request, performing a connection response, and each communication layer based on the command A first communication function for establishing a connection of
Receives a connection request including a command and data necessary for connection of a plurality of adjacent communication layers, does not include a connection response request, extracts a command and data from the connection request, and establishes a connection of each communication layer based on the command. A second communication function to be established;
And having at least one of the third communication functions for transmitting one response to data received continuously after being divided into a plurality of packets,
A communication apparatus for receiving a broadcast by any one of the communication functions described above.   A communication program for realizing the communication device according to any one of claims 1 to 4, 6 to 9, 11, 13 to 16, and 18 to 22, and causing the computer to function as the communication device.   A computer-readable recording medium on which the communication program according to claim 23 is recorded.

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