JPH11187145A - Video phone - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a videophone connected to an analog line, when performing videophone communication with each other, the videophone mode is switched at the same time as an incoming call, the type of the terminal is determined, and the handset is determined. Incoming call that does not need to be taken (for example, fax)
In the case of, the user is notified of the incoming fax by changing the ring tone. Furthermore, when it is not desired to respond to an unpleasant telephone call or the like, a videophone that does not ring when an incoming call is received is provided by registering in advance. SOLUTION: In a videophone connected to an analog line, the other party telephone number registration means 21, the other party telephone number detection means 20, the number identification means 14, and the registration means 22 for registering the type of terminal for each telephone number are provided. , Setting means 13 for setting permission and prohibition of incoming calls, and ringing tone control means 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video telephone connected to an analog line.

[0002]

2. Description of the Related Art Digital telephones (ISD)
N) Type connected to line and analog (PSTN)
Some types are connected to a line. Digital (ISDN)
Since the line uses the D channel to notify the information of the terminal on the transmitting side to the partner terminal, the receiving side determines whether or not the function of its own terminal has the same function as that of the terminal on the transmitting side. Determines whether connection is possible. If the caller is a videophone and the user is a similar videophone terminal, communication of images and voices is possible simultaneously with line connection.

As described in Japanese Patent Application Laid-Open No. Hei 4-273686, an ISDN
A technology has been developed in which a caller ID notification service of a line is used to set whether or not to transmit an own image to a partner terminal. However, in analog (PSTN) lines, what kind of terminal is the partner (for example, FAX
Or a videophone), it cannot be recognized until the line is connected, and after the line is connected, each other confirms the other party's terminal and then manually switches to the videophone.

FIG. 5 is a block diagram of a conventional analog telephone line telephone. In FIG. 5, 1 is a display device for displaying image information, 2 is an imaging device for imaging a person or the like,
Reference numeral 3 denotes a receiver for inputting voice, 4 denotes an image interface, 5 denotes a voice interface, and 6 denotes an image signal.
An image encoding / decoding unit 7 for decoding encodes / decodes the audio signal.
8 is a multiplexing / demultiplexing unit for multiplexing / demultiplexing coded data of video and audio, 9 is a modem unit, 10 and 12 are switches that are switched by operation of an operation unit 13, and 11 is a switch. A communication control unit for performing communication control, 13 is an operation unit, 14 is a control unit that issues a control signal in response to operation of the operation unit 13, 15 is a public line network, 16 is a ringing tone generation unit, and 17 is a ringer speaker. is there.

[0005] The connection of the videophone in this videophone will be described. When the receiver is picked up after the ringing sound of the incoming call, the switches 10 and 12 are switched to the B side, and the voice signal input from the receiver is transmitted to the communication control unit 11 via the voice interface 5. Then, a voice call is made with the other party using the receiver 3 or the like, and when both parties have videophones, the operation unit 13 is operated. By switching the operation unit 13 to a videophone, a control signal is output from the control unit 14 to the switches 10 and 12, the switches 10 and 12 are switched to the A side, and a terminal confirmation signal is transmitted from the modem unit 9 of one terminal. Is output.
Then, when the functions of both terminals are confirmed, communication of images and sounds is performed (this function confirmation time takes about four to five seconds to several tens of seconds depending on the type of terminal).

Next, the flow of data on the transmitting side will be described. The image captured by the imaging device 2 is encoded by the image encoding / decoding unit 6 via the image interface 4 and sent to the data multiplexing / demultiplexing unit 8. On the other hand, audio input from the receiver 3 (including a speaker and a microphone) is encoded by the audio encoding / decoding unit 7 via the audio interface 5 and sent to the data multiplexing / demultiplexing unit 8. The coded data of the image and the voice are multiplexed by the data multiplexing / demultiplexing unit 8, the multiplexed digital signal is converted into a voice signal by the modem unit 9, and transmitted to the public line network 15 via the communication control unit 11. Can be

Next, the flow on the receiving side will be described. The voice signal input from the public line network 15 is sent to the modem unit 9 via the communication control unit 11. The voice signal is converted into a digital signal by the modem unit 9 and sent to the data multiplexing / demultiplexing unit 8. A multiplexed digital signal such as an image / sound is separated into coded image data and coded sound data, and the respective signals are separated into a sound coding / decoding unit 7 and a image coding / decoding unit 6.
Sent to The encoded image data is displayed on the display device 1 as image information via the image interface 4. On the other hand, the encoded audio data is converted into audio data via the audio interface 5 as a receiver 3 (including a speaker and a microphone).
Sent to

[0008]

SUMMARY OF THE INVENTION For an ISDN line, as disclosed in Japanese Patent Laid-Open No. 4-273686,
A technique has been invented in which a caller ID notification service of the SDN line is used to set whether or not to transmit own image to a partner terminal. However, as described above, it is not possible to recognize what kind of terminal the analog (PSTN) line is (for example, a facsimile or a videophone) until the line is connected. After checking the other party's terminal, the user manually switched to the video phone.

The present invention utilizes an analog (PSTN) line number notification service recently started on a trial basis by NTT, and recognizes a telephone number of another party even on an analog (PSTN) line before picking up the handset. When a telephone number registered as a videophone in a terminal of the user is detected, a videophone that can be connected as a videophone when a line is connected is provided. Furthermore, in the case of a telephone that does not need to pick up the receiver after identifying the partner terminal (FAX, etc.)
Provides a videophone that sounds a special ring tone and can notify the user. In addition, by registering permission / prohibition of incoming calls in advance, a videophone which does not make a ringing tone when a call from a partner who does not want to connect is provided.

[0010]

According to the present invention, in order to solve the above-mentioned problems, a video telephone connected to an analog line has a telephone number registration means, a counterpart telephone number detection means, and a number identification means. And registered in advance,
When the telephone number of the other party having the videophone is detected, the videophone mode is automatically set when an incoming call is received.

In the above-mentioned video telephone, there is provided a registering means for registering the type of terminal for each telephone number and a ringing tone control means, and the ringing tone is controlled by the type of terminal identified by the number identification means. Further, in each of the above-mentioned videophones, there is a setting means for permitting or prohibiting incoming calls for each telephone number,
It is characterized in that only incoming calls from a specific telephone number are permitted or prohibited.

According to the above video telephone, the analog (P
Also in STN), it is possible to immediately shift to the videophone mode after connecting the line, to perform communication without interrupting conversation, to identify a telephone that does not need to be picked up by a special ring tone, and to connect. You can prevent incoming calls from other parties.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below. FIG. 1 is a block diagram of a videophone for an analog line according to the present invention. In FIG. 1, the same parts as those in the conventional example of FIG. 5 are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 1, 1 is a display device for displaying image information, 2 is an imaging device for imaging a person or the like, 3 is a receiver for inputting voice, 4 is an image interface, 5 is a voice interface, and 6 is an image signal. An image encoding / decoding section for encoding / decoding, 7 an audio encoding / decoding section for encoding / decoding an audio signal, 8 a multiplexing / demultiplexing section for multiplexing / demultiplexing coded data of an image and an audio, 9 Is the modem section, 10,12
Is a switch for automatically switching a videophone (A side) in the case of a videophone in response to a control signal from a control unit (hereinafter referred to as a CPU) 14, 11 is a communication control unit, and 13 is an operation unit for performing various operations , 14 control the switches 10 and 12 and output various control signals.
5 is a public line network, 16 is a ringing tone generator, 17 is a ringer speaker, 18 is a ringing tone controller (hereinafter referred to as a ringing tone control circuit), 19 is the CPU, and a caller telephone number memory 21 described later. , A number identification unit provided with a number registration memory 22, and 20 is a number detection unit.

In this video telephone, on the transmitting side,
The image captured by the imaging device 2 is an image interface 4
, And is transmitted to the data multiplexing / demultiplexing unit 8 by the image coding / decoding unit 6. On the other hand, audio input from the receiver 3 (including a speaker and a microphone) is encoded by the audio encoding / decoding unit 7 via the audio interface 5 and sent to the data multiplexing / demultiplexing unit 8. The encoded data of the image and the audio are multiplexed by the data multiplexing / demultiplexing unit 8,
The multiplexed digital signal is converted into a voice signal by the modem unit 9 and sent to the public network 15 via the communication control unit 11.

On the receiving side, the voice signal input from the public line network 15 is transmitted to the modem unit 9 via the communication control unit 11.
Sent to The voice signal is converted into a digital signal by the modem unit 9 and sent to the data multiplexing / demultiplexing unit 8. A multiplexed digital signal such as an image / audio is separated into image encoded data and audio encoded data, and the respective signals are sent to an audio encoding / decoding unit 7 and an image encoding / decoding unit 6.
The encoded image data is displayed on the display device 1 as image information via the image interface 4. On the other hand, the encoded audio data is sent to the receiver 3 (including a speaker and a microphone) as audio data via the audio interface 5.

FIG. 2 is a block diagram showing a configuration of a main part of the video telephone according to the first embodiment of the present invention. As shown in FIG. 2, in the videophone of the present invention, when a call is received on the network side of the communication control unit 11, the number detecting unit 20 capable of recognizing the telephone number of the other party by the telephone number notification service of NTT is provided. In addition, the number identification section 19 is composed of a caller telephone number memory 21 for registering a caller number of an incoming call, a number registration memory 22 for registering a telephone number in advance, and the CPU 14.

The CP constituting the number identification unit 19
U 14 outputs various control signals corresponding to the operation of the operation unit 13, reads out a number registered in the number registration memory 22 and a number stored in the caller telephone number memory 21, and compares and reads out the numbers. When the caller is a videophone, a control signal for automatically switching the switches 10 and 12 to the videophone side (A side) is output. In this embodiment, the operation unit 13 is included in the number identification unit 19, but this may be a separate unit.

In the above-mentioned video telephone, the public telephone network 1
When a signal is input from No. 5, the number detector 20 detects the caller number. The detected number is stored in the caller telephone number memory 21 of the number identification section 19. The CPU 14 reads out the number registered in advance in the number registration memory 22 and the number stored in the caller telephone number memory 21, respectively.
Comparison and identification (the user registers the number in a list as shown in FIG. 3, for example).

As a result of the comparison, if it matches one of the registered telephone numbers, the terminal type is read from the registered contents of the list in FIG. At this time, if the other party is a videophone, the CPU 14 outputs a control signal for switching to the videophone to the switches 10 and 12, and
A control signal is sent to the ringing tone control circuit 18, and the ringing tone generator 13 generates a ringing tone. The user can know that a call has been received from the videophone terminal by a special ringing tone (for example, a ringing tone like b in FIG. 4, a high-level sound is output). The user does not need to pick up the handset when this special ringing tone sounds (the ringing tone informs the user that the line has been connected). Then, after the line connection processing, negotiation by a tone signal is automatically performed between the calling side and the called side terminal by a connection operation similar to the FAX. When the negotiation is completed and communication is established, the user is notified with a normal ringing tone or a ringing tone set for videophone connection (a ringing tone like a in FIG. 4). At this time, when the user picks up the receiver, they can communicate with each other while shifting to the videophone mode.

Next, a video telephone according to a second embodiment of the present invention will be described. The caller number is detected by the number detector 20 from the signal input from the public line network 15 and stored in the caller telephone number memory 21. The CPU 14 compares the telephone number read from the number registration memory 22 of the number identification section 19 with the caller number stored in the caller telephone number memory 21. Since the result of comparison corresponds to each type of terminal as shown in the list of FIG. 3, it is possible to identify from which terminal the call originated. For example,
When the other party's terminal is a facsimile, by outputting a facsimile terminal control signal to the ringing tone control circuit 18, the ringing tone generator 13 generates and outputs a facsimile terminal ringing tone. Before the user picks up the phone,
It can recognize that the call is from the AX.

Finally, a video telephone according to a third embodiment of the present invention will be described. The caller number is detected by the number detector 20 in FIG. 3 from the signal input from the public line network 15 and stored in the caller telephone number memory 21.
The CPU 14 compares the telephone number read from the number registration memory 22 of the number identification section 19 with the caller number stored in the caller telephone number memory 21. As a result of the comparison, permission or prohibition of incoming calls as shown in the list of FIG. 3 is set, and if the caller ID is set to prohibition of incoming calls, control to output a ringing tone to the ringing tone control circuit 18 is performed. Does not emit a signal and does not ring. At this time,
By providing the terminal with automatic response means, it is possible to reject communication from the partner terminal by notifying the partner terminal of sending an answering machine message or the like.
In addition, the setting of permission / prohibition of the incoming call is stored in the caller telephone number memory 21 by operating the operation unit 13 if the user does not want to accept the incoming call from this telephone number during the call. The telephone number of the other party is recorded in the number registration memory 22 and can be automatically registered.

[0023]

According to the video telephone of the first aspect,
Even in analog (PSTN), it is possible to immediately shift to the videophone mode after connecting the line, and to perform communication without interrupting the conversation. According to the second aspect of the present invention, since the type of the terminal can be identified before the line is connected, in the case of a terminal that does not need to pick up the handset (for example, a facsimile terminal), the user has to take the trouble of picking up the handset. Can be omitted. Further, according to the video telephone set of the third aspect, there is an effect that the user does not know the incoming call itself of the useless telephone or the like, so that the user is not bothered by an unpleasant telephone call.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a videophone for an analog line according to the present invention.

FIG. 2 is a block diagram showing a configuration of a main part of the video phone according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a registered content list of telephone numbers in the videophone according to the present invention.

FIG. 4 is a diagram showing an image of a ringing tone in the videophone according to the present invention.

FIG. 5 is a block diagram showing a configuration of a conventional analog telephone line telephone.

[Explanation of symbols]

 13 operation section 14 control section (CPU) 18 ringing tone control section 20 number detection section 21 memory for caller telephone number 22 memory for number registration

Claims (3)

[Claims] 1. A video telephone connected to an analog line, comprising: a telephone number registration means, a telephone number detection means, and a number identification means, and a telephone number of a telephone number having a video telephone registered in advance. The videophone that automatically enters videophone mode when an incoming call is detected. 2. The video telephone according to claim 1, wherein
A videophone having registration means for registering the type of terminal for each telephone number and ringing tone control means, wherein ringing tone is controlled by the type of terminal identified by the number identification means. 3. The video telephone according to claim 1, further comprising setting means for permitting or prohibiting a call for each telephone number, and permitting or prohibiting only a call from a specific telephone number. Video phone.