JP2013045424A - Reading device, control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To more appropriately control communication when telegram information from an information processing apparatus is transmitted to a storage medium.SOLUTION: A reading device which has a storage section, and receives telegram information from an information processing apparatus and transmits the received telegram information to a storage medium includes: acquiring attribute information indicating an attribute of the storage medium from the storage medium; reading out frequency information corresponding to the acquired attribute information from the storage section which is stored in association with the attribute information indicating the attribute of the storage medium and the frequency information indicating the frequency of transmission of the telegram information; and controlling transmission of the telegram information to the storage medium according to the frequency of the frequency information, when receiving the telegram information from the information processing apparatus.

Description

  The present invention relates to a reading device, a control method, and a program.

  In recent years, a thin client type reader / writer (thin client type RW) has been proposed. The thin client type RW is connected to a server via a network, receives command information for a non-contact IC card (non-contact IC card) created by the server from the server, and receives the received command information for a non-contact IC. To be transferred to the card.

Here, with respect to the thin client type RW, an inexpensive device is realized by not implementing various functions as much as possible, that is, by implementing only the function of transferring command information created by the server to the non-contact IC card. . Therefore, in a system comprising a thin client type RW (an example of a reading device), a server (an example of an information processing device), and a contactless IC card (an example of a medium), a communication error occurs between the thin client type RW and the contactless IC card. When (abnormal) occurs, the server detects communication errors and recreates command information (an example of telegram information) to be retransmitted.
For this reason, if a communication error occurs even once between the thin client type RW and the non-contact IC card, the thin client type RW waits for command information from the server connected via the network, and much recovery is required. Time is needed. For example, during the recovery, there is a problem that the non-contact IC card is out of a range (communication range) in which communication with the thin client type RW is possible and necessary communication is not completed.

  The present invention has been made in view of such problems, and it is an object of the present invention to more appropriately control communication when transmitting message information from an information processing apparatus to a storage medium.

  Therefore, a reading apparatus according to the present invention is a reading apparatus that includes a storage unit, receives electronic message information from an information processing apparatus, and transmits the electronic message information to a storage medium, from the storage medium to an attribute of the storage medium Acquired by the acquisition unit from the storage unit in which attribute information indicating the attribute of the storage medium, attribute information indicating the attribute of the storage medium, and frequency information indicating the number of times of transmission of the telegram information are stored in association with each other. Reading means for reading the number of times information corresponding to the attribute information, control means for performing control to transmit the message information to the storage medium according to the number of times information when receiving the message information from the information processing device; It is characterized by having.

  The reading device according to the present invention is a reading device that includes a storage unit, receives electronic message information from an information processing device, and transmits the electronic message information to a storage medium, from the storage medium to an attribute of the storage medium From the storage unit in which the acquisition means for acquiring the attribute information indicating the attribute, the attribute information indicating the attribute of the storage medium, and the first number specifying information for specifying the number of times to transmit the telegram information are stored in association with each other A first reading unit that reads the first number specifying information corresponding to the attribute information acquired by the acquiring unit, and a message type information indicating a type of the message information and a message when the message information is received from the information processing apparatus. The second number specifying information corresponding to the message type information of the received message information is read from the storage unit stored in association with the second number specifying information for specifying the number of times of transmitting information. First And the number of times the electronic message information is transmitted from the first number specifying information read by the first reading means and the second number specifying information read by the second reading means. Control means for performing control to calculate and transmit the message information to the storage medium according to the calculated number of times.

  Note that the present invention may be a system, a recording medium, or the like.

  ADVANTAGE OF THE INVENTION According to this invention, the communication at the time of transmitting the message information from information processing apparatus to a storage medium can be controlled more appropriately.

It is a figure which shows an example of a structure of a communication system. It is a figure which shows an example of a structure of a mobile telephone. It is a figure which shows an example of a communicable area | region. It is a figure which shows an example of a communicable area | region. It is a figure which shows an example of a hardware structure of each apparatus. It is a figure which shows an example of a structure of the module of each apparatus. It is a figure which shows an example of the sequence of a communication system. It is a figure which shows an example of a transmission frequency table. It is a figure which shows an example of the flowchart which concerns on the process at the time of reception. It is a figure which shows an example of the flowchart which concerns on the transmission frequency determination process. It is a figure which shows an example of a transmission frequency and transmission interval table. It is a figure which shows an example of the flowchart which concerns on the process at the time of reception. It is a figure which shows an example of the flowchart which concerns on a transmission frequency and transmission interval determination process. It is a figure which shows an example of the flowchart which concerns on a card response reception process. It is a figure which shows an example of the transmission frequency table for every command classification. It is a figure which shows an example of the flowchart which concerns on the transmission frequency determination process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a diagram illustrating an example of a configuration of a communication system according to the present embodiment. The communication system includes a server 100, an RW (reader / writer) 200, and a medium 300. The server 100 is an example of an information processing apparatus (computer). The RW 200 is an example of a reading device (computer). The medium 300 is an example of a storage medium (computer), a non-contact IC card, a mobile phone having a wallet function (mobile phone with a wallet function), and an NFC (Near Field Communication) mobile phone having a PDA function. A phone (NFC mobile phone with PDA function), an NFC mobile terminal, or the like.
The server 100 and the RW 200 are communicably connected via the network 900. Note that the form of communication is not limited to a specific form such as wired, wireless, or a mixture of wired and wireless. In addition, wireless communication is performed between the RW 200 and the medium 300. For example, a carrier is transmitted from the RW 200, power is supplied to the medium 300 by electromagnetic induction, and communication is performed between the RW 200 and the medium 300 by carrier modulation.

Here, characteristics of communication between the RW 200 and the medium 300 will be described. Here, the medium 300 will be described by taking a mobile phone as an example. FIG. 2 is a diagram illustrating an example of a configuration of a mobile phone.
FIG. 2A illustrates an example of a mobile phone 301 (battery surface). The antenna 302 of the mobile phone 301 is provided largely at a position surrounding the battery (battery pack). FIG. 2B illustrates an example of the mobile phone 303 (battery surface). The antenna 304 of the mobile phone 303 is provided small at a position where no battery is provided.
FIG. 2C illustrates an example of a mobile phone 305 (liquid crystal surface). The antenna 306 of the mobile phone 305 is smaller than the antenna 302 but larger than the antenna 304 at a position where the liquid crystal display is provided. In addition, the shape of the antenna is not limited to a quadrangle, and may be a circle, an ellipse, or another polygon different from the quadrangle.
Thus, although the form (pattern, shape, installation position, etc.) of the antenna differs depending on the mobile phone, the area where the mobile phone can communicate with the RW 200 (communicable area) differs depending on the form of the antenna. In addition, communication between the mobile phone and the RW 200 can be performed due to the influence of mounting metal objects in the vicinity of the antenna of the mobile phone (such as a relative positional relationship in which the metal part of the wiring board or the housing electromagnetically interferes with the antenna). The area (communication available area) is different. Therefore, the communicable area will be described.

FIG. 3 is a diagram illustrating an example of a communicable area. FIG. 3A is a diagram illustrating an example of the communicable area 410 of the mobile phone 301. In the communicable area 410, communication impossible areas (411, 412, 413) indicating areas where communication is not possible are generated.
FIG. 3B is a diagram illustrating an example of the communicable area 420 of the mobile phone 303. In the communicable area 420, communication impossible areas (421, 422) are generated. FIG. 3C illustrates an example of the communicable area 430 of the mobile phone 305. In the communicable area 430, a communication impossibility area 431 is generated.
Here, the incommunicable area generated between the mobile phones 301, 303, 305 and the RW 200 is not determined only by the shape of the antennas of the mobile phones 301, 303, 305, but the antennas of the mobile phones 301, 303, 305. In addition, the mobile phone 301, 303, 305 takes an arbitrary form depending on the influence of mounting metal objects near the antenna, the communication characteristics of the RW 200, and the like.

For example, when the mobile phone 301 is moved along the track 414 or the track 415, the communication is not disconnected in the communicable region 410 because it does not pass through the communicable region. However, when the mobile phone 301 is moved along the trajectory 416, the mobile phone 301 crosses the non-communication area 411, and communication is impossible in the non-communication area 411. Therefore, communication can be disconnected in the communication area 410 (communication). An error may occur).
When a communication error occurs, the RW 200 needs to retransmit the command, but at this time, a lot of time is required via the server 100. In view of this, the RW 200 is provided with a configuration for transmitting a command in consideration of communication characteristics such as a communicable region and a communicable region. In the present embodiment, the RW 200 has the number of times (the number of times of transmission) of transmitting a command defined in consideration of communication characteristics, and transmits the command to the RW 200 according to the number of times of transmission.

Here, the relationship between the communication characteristics and the number of transmissions will be described more specifically. For example, as the medium 300, a first contactless IC card that can be used only for transportation and electronic money, a bank other than transportation and electronic money can be used, and a contact interface (contact that can be used with credit) in addition to the contactless interface. There is a second non-contact IC card provided with an interface) and having a larger memory capacity than the first non-contact IC card.
Even when electromagnetic waves are transmitted from the same RW 200, the second non-contact IC card having a large capacity requires more power to operate than the first non-contact IC card. For this reason, as a result, the communicable area between the RW 200 and the second non-contact IC card becomes narrower, and a state in which communication is impossible is likely to occur.
That is, in the second contactless IC card, the probability of retransmitting the command is high, so when setting the number of transmissions to the RW 200, set the number of transmissions larger than the number of transmissions of the first contactless IC card. Is preferred (reasonable).

For example, in the case of an IC chip constituting a non-contact IC card, if the design rule for the line width of the IC chip is narrowed, the power consumption is reduced and the communicable area is increased. That is, the number of transmissions of a non-contact IC card having an IC chip with a narrow line width design rule may be smaller than the number of transmissions of a non-contact IC card having an IC chip with a large line width design rule. Therefore, it is preferable to set the optimum number of transmissions according to the IC chip line width design rule.
Further, for example, regarding the hardware configuration of the IC chip, the processing time of the non-contact IC card varies depending on the hardware configuration. For example, if the cryptographic processing is executed by hardware (circuit) as much as possible, the processing time in the non-contact IC card is shorter than when the cryptographic processing is performed by software. Therefore, in this case, since the command can be processed before the non-contact IC card enters the communication disabled area, the number of transmissions may be reduced. Therefore, it is preferable to set the optimum number of transmissions depending on the hardware configuration of the IC chip.

Further, for example, regarding security with respect to cryptographic processing of an IC chip, security requirements are getting higher. Temporarily, when trying to obtain security evaluation / certification related to ISO / IEC15408, a lot of power is intentionally consumed to counter DPA (Differential Power Analysis), Fault Attack, etc. The processing time is often increased. Therefore, it is preferable to set the optimum number of transmissions for each security measure of the IC chip.
In addition, for example, the first contactless IC card used as a regular ticket and the train can be used without purchasing a ticket by subtracting the fare corresponding to the boarding section from the amount charged (paid). There may be two non-contact IC cards in one commuter pass. In this case, for example, the RW 200 detects that there are two non-contact IC cards, and provides guidance for holding only one card. Therefore, in order to easily detect that there are two non-contact IC cards, different antenna shapes are adopted for each non-contact IC card. That is, since the communication characteristics (communication area, non-communication area, etc.) vary depending on the form (characteristic) of the antenna of the non-contact IC card, it is preferable to set the optimal number of transmissions for each antenna.

Further, for example, in a non-contact IC card having two IC chips (dual chip) with high power consumption, a communication distance is secured far away by the RW 200, so that the signal processing result in the non-contact IC card is RW 200. In some cases, a device is devised to make signal processing characteristics stand out so that it can be easily detected.
In this case, a processing method useful for signal processing at a long distance may cause a phenomenon that it becomes difficult for the RW 200 to detect the signal of the non-contact IC card between the distance and the vicinity of the RW 200. In this case, communication is started between the RW 200 and the non-contact IC card at a distance, but there is a possibility that the communication is interrupted on the way. Therefore, it is preferable to set the number of transmissions assuming that a command (communication packet) needs to be transmitted again in the middle.

Up to this point, it has been explained that it is necessary to define the optimum number of transmissions based on the difference in the characteristics of the IC chip mounted on the non-contact IC card and the characteristics of the antenna. However, the function of the contactless IC card is also implemented in a mobile phone with a wallet function, an NFC mobile phone with a PDA function, and the like.
That is, as shown in FIG. 2, the mobile phone antenna with a wallet function is one that is mounted around the battery, one that is mounted around the liquid crystal display, one that is mounted on the top of the battery, and the antenna is also wound. There are various shapes such as a linear shape and a coil shape. Therefore, communication characteristics differ depending on the antenna in the mobile phone with the wallet function.
In communication, the influence of mounting metal objects around the antenna (such as the influence of the relative positional relationship in which the metal part of the wiring board or the casing electromagnetically interferes with the antenna) is also great. That is, since the metal objects provided for the mobile phone with the wallet function and the NFC mobile phone with the PDA function are different, the communication characteristics are different.
Therefore, even if a dedicated IC chip is mounted on a mobile phone with a wallet function and an NFC mobile phone with a PDA function different from those for a non-contact IC card for each mobile phone with a wallet function and an NFC mobile phone with a PDA function, Since the incommunicable areas that occur in the communicable areas are individually different, it is preferable to set the optimum number of transmissions.

Based on the above contents, a configuration using a table that defines the number of transmissions for each attribute of the medium 300 is conceived.
Here, the attributes of the medium 300 include the shape of the medium 300, the shape of the antenna of the medium 300, the type of IC chip mounted on the medium 300 (memory capacity, presence of contact type I / F, power consumption difference, manufacturing Manufacturer, type of non-volatile memory (EEPROM, FERAM, etc.), manufacturing process (design line width), hardware configuration (degree of encryption hardware, etc.), mounting form of medium 300 (IC card, IC tag, mobile phone) Phone, NFC portable terminal, etc.).

  So far, the differences have been described focusing on the medium 300. However, the communication characteristics between the medium 300 and the RW 200 differ depending on the shape of the antenna of the RW 200 that reads them and the method of setting the antenna characteristics. Therefore, it is preferable to set the optimum number of transmissions to the RW 200 even in communication with the same medium 300.

Based on the reasons described above, the communication characteristics will be further described with reference to FIG.
As shown in FIGS. 4A and 4B, the same RW 200 may or may not have a communication disabled area (451) depending on different media (non-contact IC cards 307 and 308).
Further, as shown in FIGS. 4C and 4D, even in the same medium (non-contact IC card 309), the communication disabled areas (461, 471) may be different due to different RWs (201, 202).
As described above, the communication characteristics may differ depending on the combination of the RW 200 and the medium 300.
In the following description, the non-contact IC card is assumed as the medium 300. However, any of the above attributes may be used as the attribute of the medium 300 (note that any combination of attributes may be employed). it can.).

Next, the hardware configuration of each apparatus will be described with reference to FIG. FIG. 5 is a diagram illustrating an example of a hardware configuration of each apparatus.
FIG. 5A is a diagram illustrating an example of a hardware configuration of the server 100. The server 100 includes a central processing unit (CPU) 110, a read only memory (ROM) 120, a random access memory (RAM) 130, a hard disk drive (HDD) 140, an input / output device 150, and an interface (I / F) 160. Consists of including.

The CPU 110 controls the entire server 100. For example, the CPU 110 executes various programs stored in the ROM 120 and realizes the functions of the server 100 described later.
The ROM 120 stores various data such as various programs and data used in various processes. The ROM 120 is an example of a storage device that stores various data. The RAM 130 functions as a main memory and work area for the CPU 110. The RAM 130 is an example of a temporary storage device that temporarily stores various data.
The HDD 140 is an example of an external storage device having a large capacity storage area. The input / output device 150 includes a display, a mouse, a keyboard, and the like, and inputs or outputs data in response to an operation (user operation) by a user such as a mouse or a keyboard. The I / F 160 is a communication interface for performing wired or wireless communication, and is connected to the network 900 via various cables such as a LAN cable, for example.

FIG. 5B is a diagram illustrating an example of a hardware configuration of the RW 200. The RW 200 includes a CPU 210, a ROM 220, a RAM 230, an RF (Radio Frequency) circuit 240, an ANT (antenna) 250, and an I / F 260.
The CPU 210 controls the entire RW 200. For example, the CPU 210 executes various programs stored in the ROM 220 and realizes the functions and flowcharts of the RW 200 described later.

The ROM 220 stores various programs, data used in various processes, and various data such as tables described later. The ROM 220 is a memory in which data can be electrically written and erased, such as an EEPROM (Electrically Erasable and Programmable Read Only Memory). The ROM 220 is an example of a storage device that stores various data. The RAM 230 functions as a main memory and work area for the CPU 210. The RAM 230 is an example of a temporary storage device that temporarily stores various data.
The RF circuit 240 exchanges high-frequency signals with the ANT 250, supplies power, and modulates and demodulates data. The ANT 250 radiates (transmits) a high-frequency signal (high-frequency energy) to space as a radio wave (electromagnetic wave). The ANT 250 converts (receives) a radio wave (electromagnetic wave) in space into a high frequency signal (high frequency energy). The I / F 260 is a communication interface for performing wired or wireless communication. For example, the I / F 260 is connected to the network 900 via various cables.

FIG. 5C is a diagram illustrating an example of a hardware configuration of the medium 300. The medium 300 includes a CPU 310, a ROM 320, a RAM 330, an RF circuit 340, and an ANT 350.
The CPU 210 controls the entire medium 300. For example, the CPU 310 executes various programs stored in the ROM 320 and realizes the functions of the medium 300 described later.

The ROM 320 stores various data such as various programs and data used in various processes. The ROM 320 is an example of a storage device that stores various data. The RAM 330 functions as a main memory and work area for the CPU 310. The RAM 330 is an example of a temporary storage device that temporarily stores various data.
The RF circuit 340 exchanges high-frequency signals with the ANT 350, supplies power, and modulates and demodulates data. The ANT 350 emits (transmits) a high-frequency signal (high-frequency energy) to space as a radio wave (electromagnetic wave). The ANT 350 converts (receives) a radio wave (electromagnetic wave) in space into a high frequency signal (high frequency energy).

Next, the module configuration of each apparatus will be described with reference to FIG. FIG. 6 is a diagram illustrating an example of a module configuration of each apparatus. The function of each module is realized by each program being executed by each CPU of each device. However, some or all of the functions of each module may be realized by dedicated hardware.
FIG. 6A is a diagram illustrating an example of a module configuration of the server 100. The server 100 includes a control unit 170, a storage unit 180, and a communication unit 190.
The control unit 170 controls the storage unit 180 and the communication unit 190 to control the entire server 100. The storage unit 180 reads and writes data in the storage device such as the RAM 130 and the HDD 140 based on an instruction from the control unit 170. The communication unit 190 communicates with the RW 200 via the I / F 160 based on an instruction from the control unit 170. For example, the communication unit 190 transmits various commands to the RW 200 via the I / F 160 under the control of the control unit 170.

FIG. 6B is a diagram illustrating an example of a module configuration of the RW 200. The RW 200 includes a control unit 270, a storage unit 280, and a communication unit 290.
The control unit 270 controls the storage unit 280 and the communication unit 290 to control the RW 200 as a whole. The storage unit 280 reads, writes, and the like with respect to data in a storage device such as the ROM 220 and the RAM 230 based on an instruction from the control unit 270. For example, the storage unit 280 acquires data in the ROM 220 under the control of the control unit 270.
The communication unit 290 communicates with the server 100 via the I / F 260 based on an instruction from the control unit 270. For example, the communication unit 290 receives various commands from the server 100 via the I / F 260 and notifies the control unit 270 of the various commands. Further, the communication unit 290 communicates with the medium 300 via the RF circuit 240 and the ANT 250 based on an instruction from the control unit 270. For example, the communication unit 290 transmits a command to the medium 300 under the control of the control unit 270 via the RF circuit 240 and the ANT 250.

FIG. 6C is a diagram illustrating an example of a module configuration of the medium 300. The medium 300 includes a control unit 370, a storage unit 380, and a communication unit 390.
The control unit 370 controls the storage unit 380 and the communication unit 390, and controls the entire medium 300. The storage unit 380 performs reading, writing, and the like of data in storage devices such as the ROM 320 and the RAM 330 based on instructions from the control unit 370.
The communication unit 390 communicates with the RW 200 via the RF circuit 340 and the ANT 350 based on an instruction from the control unit 370. For example, the communication unit 390 performs processing for the command under the control of the control unit 370 and transmits the processing result (response to the command) to the RW 200 via the RF circuit 340 and the ANT 350.

Next, communication control in the communication system will be described with reference to FIG. FIG. 7 is a diagram illustrating an example of a sequence of the communication system.
In SQ5, the server 100 generates a medium type acquisition command including an instruction (medium type acquisition information) for acquiring the type of the medium 300, generates a card command relay command including the generated medium type acquisition command, and generates the generated card. A command relay command is transmitted to RW200. In SQ10, when receiving the card command relay command, the RW 200 transmits it to the medium 300 as a medium type acquisition command.
In SQ15, when the medium 300 receives the medium type acquisition command, the RW 200 identifies an ID for identifying the medium 300, medium type information indicating the type of the medium 300 (an example of attribute information), and each card command from the ROM 320 or the like. The maximum response time information for determining the timeout time is read, and a medium type acquisition response including these is transmitted to the RW 200. In SQ20, RW200 will transmit to the server 100 as a card command relay response, if a medium classification acquisition response is received.

In SQ25, the RW 200 determines, for example, the type of the medium 300 based on the medium type information included in the medium type acquisition response, acquires the number of transmissions from the transmission number table, and determines the number of transmissions. Details of the process for determining the number of transmissions of SQ25 will be described later.
Here, a method for determining the type of the medium 300 will be described. For example, for various IC chips for non-contact IC cards, there are a plurality of types of IC chips, and different IC codes are assigned to the IC chips. Therefore, the RW 200 can distinguish (identify) the IC chip by acquiring the IC code from the medium 300.
Further, for example, in an IC chip for a mobile phone, there is an area where information such as a carrier identification code (an identifier for identifying a mobile phone business company) and a mobile phone model code is written. Therefore, the RW 200 can identify the model of the mobile phone by acquiring the information from the medium 300.
That is, when the configuration in which the attribute code is set in the medium 300 and the attribute code is acquired by the RW 200 is adopted, the attribute of the medium 300 (for each IC chip type, for each antenna shape, for the communication characteristics of the metal part) The number of transmissions is set in the transmission number table for each influence.

Here, the transmission count table will be described with reference to FIG. FIG. 8 is a diagram illustrating an example of the transmission count table. The transmission count table is stored in the ROM 220. In the transmission count table, medium type information and transmission count information are defined in association with each other. For example, medium type information “0001” and transmission count information “001” are associated with each other and stored in the ROM 220.
In the present embodiment, the setting non-contact IC card storing the transmission frequency table is held over the RW 200 by an administrator or the like, so that the transmission non-contact IC card transmission frequency table is stored in the ROM 220 or the ROM 220 The transmission number table is updated with the transmission number table of the non-contact IC card for setting. However, other setting methods may be adopted. For example, the server 100 may be configured to transmit information in the transmission count table.
Further, the configuration for storing data is not limited to the above configuration. For example, it may be data (file) in a delimited format using delimiters such as commas.
In addition, in this sequence, although the structure which SQ25 is performed after SQ20 was shown, it is not restricted to this structure. For example, a configuration may be adopted in which the RW 200 performs the processing of SQ25 after performing the processing of SQ25.

In SQ30, the server 100 generates a card command (non-encrypted message information) for creating an instruction to the low security medium 300, for example, an instruction to the unencrypted medium 300, and the generated card command is generated. The included card command relay command is transmitted to the RW 200. In addition, when receiving the card command relay command, the RW 200 transmits a card command to the medium 300 according to the number of transmissions acquired in SQ25 (SQ35, SQ45, SQ55).
For example, when the transmission number information “003” is acquired, the RW 200 transmits the card command to the medium 300 three times. Note that the transmission configuration is not limited to this configuration. For example, the card command may be transmitted when the RW 200 determines that there is no card response (reply) even after a certain time has elapsed, or when the RW 200 determines that the communication is not normal.
On the other hand, when receiving the card command, the medium 300 performs processing according to the card command and transmits a card response to the RW 200 (SQ40, SQ60). When communication is interrupted, the card response may not be received by the RW 200 (SQ50). In SQ65, the RW 200 transmits a card response to the server 100 as a card command relay response.

Next, processing when the RW 200 receives a medium type acquisition response and a card command relay command (processing at the time of reception) will be described with reference to FIG. FIG. 9 is a diagram illustrating an example of a flowchart relating to reception processing.
First, when receiving the medium type acquisition response, the control unit 270 performs a transmission number determination process (S5). In the transmission count determination process, the control unit 270 determines the transmission count and stores it in the RAM 230. Details of the transmission count determination process will be described later.
Subsequently, when receiving the card command relay command, the control unit 270 transmits the card command to the medium 300 (S10). Subsequently, the control unit 270 receives a card response from the medium 300 (S15). As described above, the control unit 270 may not receive a card response. Subsequently, the control unit 270 determines whether or not the number of transmissions on the RAM 230 is “0” (S20). At this time, if the control unit 270 determines that the number of transmissions is “0”, the process ends. On the other hand, when determining that the number of transmissions is not “0”, the control unit 270 moves the process to S25.
In S25, the control unit 270 subtracts “1” from the number of transmissions on the RAM 230, and moves the process to S10.

FIG. 10 is a diagram illustrating an example of a flowchart according to the transmission count determination process.
First, the control unit 270 determines whether or not a value (transmission count information) corresponding to the medium type information exists in the transmission count table. At this time, if it is determined that the control unit 270 exists, the process proceeds to S110, and if it is determined that it does not exist, the process proceeds to S115.
In S110, the control unit 270 acquires (reads) the transmission count information from the transmission count table, determines the acquired transmission count information (transmission count) as the transmission count, and stores it in the RAM 230. In S <b> 115, the control unit 270 acquires default transmission count information from the transmission count table, determines the acquired transmission count information (transmission count) as the transmission count, and stores it in the RAM 230.

According to the configuration described above, it is possible to perform the operation of retrying the transmission of the card command by the RW 200 alone. In addition, since the RW 200 employs a minimum configuration that enables more appropriate communication, the RW 200 can be provided at a low price.
For example, in the case of a communication system using a conventional thin client type RW, the server has an encryption circuit, the logical consistency of the card command relay response is verified by the server, and there is a logical mismatch. Again, a command including the encrypted instruction to the non-contact IC card or the like is transmitted to the thin client type RW. Then, a command including the above instruction is transmitted from the thin client type RW to the non-contact IC card or the like.

However, in this embodiment, since transmission of a card command (plain text command) including an instruction to the medium 300 with low security is controlled, the RW 200 includes an encryption circuit to encrypt the instruction to the medium 300. There is no need to
That is, in the present embodiment, transmission of a plaintext command is controlled by simple processing, so that a plaintext command can be quickly retransmitted while avoiding an expensive reading apparatus.

  Further, the present embodiment is not limited to the configuration described above. For example, when the RW200 is to be manufactured at a low price, the number of transmissions is, for example, twice for a simple non-contact IC card, for example, twice for a non-contact IC card having a dual chip. The communication performance is significantly inferior compared to the above. For example, there are differences of 4 models for mobile phones with wallet function, but there are models that do not perform well. A simple transmission number table may be adopted.

In this embodiment, the RW 200 transmits all card responses to the server 100, and the server 100 determines logical consistency. In this case, when determining that there is no logically consistent card response, the server 100 transmits the same card command relay command to the RW 200 again.
However, the configuration is not limited to this. For example, the RW 200 transmits only a card response that is logically consistent to the server 100, and when it is determined that the logical consistency is not achieved, the card command is transmitted again according to the number of transmissions. It is good. In addition, when considering the communication time between the RW 200 and the server 100, it is assumed that the probability of communication failure for each medium 300 is assumed, and sending multiple card commands from the RW 200 results in a shorter overall processing time. It is thought that time can be spent and a stable communication environment can be provided.
In other words, with any of the above-described configurations, it is possible to ensure that reading devices that are put on the market in large quantities are inexpensive and ensure a certain level of communication performance.

Further, it is logical that communication starts between the RW 200 and the medium 300 and then the communication is particularly bad at a relative position (a fixed place) between the RW 200 and the medium 300 (for example, phase inversion of card response). Note that phase reversal means that the medium 300 (non-contact IC card or the like) changes the load impedance only within a certain range because the RW 200 and the medium 300 (non-contact IC card or the like) influence each other. The voltage value induced in the RW 200 does not change, that is, the card response from the medium 300 (non-contact IC card or the like) cannot be received by the RW 200.
Therefore, a configuration may be adopted in which a large number of card commands are transmitted with respect to a specific card command that is relatively easy to match the communication disabled area in the sequence of card commands transmitted from the RW 200 to the medium 300. In this case, for example, a dedicated transmission number table is mounted in the RW 200 in advance.

<Second Embodiment>
In the first embodiment, the configuration in which the card command is transmitted according to the number of transmissions defined in consideration of the communication characteristics such as the communication disabled area is shown. However, since the timing for transmitting the card command is not taken into account, communication may be wasted. Therefore, in the present embodiment, a method of reducing waste in communication by adopting a transmission interval indicating the timing of transmitting a card command will be described.
In the present embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. The configurations of the transmission count table and the transmission count determination process are mainly different, and will be described.

In the present embodiment, the RW 200 has a transmission count / transmission interval table. Therefore, the transmission count / transmission interval table will be described with reference to FIG.
FIG. 11 is a diagram illustrating an example of a transmission count / transmission interval table. In the transmission count / transmission interval table, medium type information, transmission count information, and transmission interval information are defined in association with each other. For example, medium type information “0001”, transmission count information “001”, and transmission interval information “120” are associated with each other and stored in the ROM 220.

Next, reception processing will be described with reference to FIG. FIG. 12 is a diagram illustrating an example of a flowchart relating to the reception process.
First, the control unit 270 performs transmission count / transmission interval determination processing (S205). In the transmission count / transmission interval determination process, the control unit 270 determines the transmission count and the transmission interval and stores them in the RAM 230. Details of the transmission count / transmission interval determination process will be described later.
Subsequently, when receiving the card command relay command, the control unit 270 transmits the card command to the medium 300 (S210). Subsequently, the control unit 270 performs card response reception processing (S215). In the card response reception process, the control unit 270 sets a flag indicating whether or not the reception of the card response has been completed (whether or not the transmission interval has elapsed). Details of the card response reception process will be described later.

Subsequently, the control unit 270 determines whether or not the reception of the card response is completed (S220). At this time, when the control unit 270 determines that the flag indicating that the reception of the card response is completed, the control unit 270 ends normally. On the other hand, if it is determined that the flag indicating that the reception of the card response has not been completed is set, the process proceeds to S225.
In S225, the control unit 270 determines whether or not the number of transmissions on the RAM 230 is “0”. At this time, when the control unit 270 determines that the number of transmissions is “0”, the control unit 270 terminates with an error and newly enters the medium 300 within the receivable range (for example, from the non-communication area to the communication area) The reception process is resumed again. On the other hand, when determining that the number of transmissions is not “0”, the control unit 270 moves the process to S230.
In S230, the control unit 270 subtracts “1” from the number of transmissions on the RAM 230, and moves the process to S210. In other words, a configuration may be adopted in which, for example, a card command corresponding to the number of times of transmission is transmitted at every transmission interval, regardless of the presence or absence of a card response, as in the case of reception processing of the first embodiment.

FIG. 13 is a diagram illustrating an example of a flowchart according to the transmission count / transmission interval determination process.
First, the control unit 270 determines whether or not values (transmission count information and transmission interval information) corresponding to the medium type information exist in the transmission count / transmission interval table (S305). At this time, if it is determined that the control unit 270 exists, the process proceeds to S310, and if it is determined that it does not exist, the process proceeds to S315.
In S310, the control unit 270 obtains transmission count information and transmission interval information from the transmission count / transmission interval table. In S315, the control unit 270 acquires default transmission count information and transmission interval information from the transmission count / transmission interval table. In S310 and S315, the control unit 270 determines the acquired transmission count information (transmission count) as the transmission count, determines the acquired transmission interval information (transmission interval) as the transmission interval, and stores these in the RAM 230. .

FIG. 14 is a diagram illustrating an example of a flowchart relating to card response reception processing.
First, the control unit 270 determines whether or not the first byte of the card response has been received (S405). At this time, if the control unit 270 determines that it has been received, it moves the process to S420, and if it determines that it has not been received, moves the process to S410.
In S410, control unit 270 determines whether or not the transmission interval has elapsed. At this time, if the control unit 270 determines that it has elapsed, it moves the process to S415, and if it determines that it has not elapsed, it moves the process to S405. In S415, the control unit 270 sets a flag indicating that the reception of the card response is incomplete (timeout setting). The flag is stored in the RAM 230.

In S420, the control unit 270 receives the second and subsequent bytes of the card response. Subsequently, the control unit 270 determines whether or not all bytes (for example, the last bit) have been received (S425). Note that the present embodiment is not limited to this configuration. For example, the control unit 270 determines the card response based on data (validity confirmation data) that can determine the validity of the response added to the card response. The validity may be confirmed and it may be determined whether or not all bytes have been received.
At this time, if the control unit 270 determines that it has been received, it moves the process to S430. On the other hand, if it determines that it has not been received, it moves the process to S420.
In S430, the control unit 270 sets a flag indicating that the reception of the card response is completed (reception completion setting). The flag is stored in the RAM 230.

  According to the configuration described above, since a transmission interval is provided for each attribute of the medium 300, it is possible to more appropriately control card command transmission when a communication error occurs.

<Third Embodiment>
In the second embodiment, the method of adopting the transmission interval and reducing waste in communication has been described. In the present embodiment, a method of calculating the transmission interval and reducing waste in communication will be described.
In the present embodiment, the same components as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted. In addition, since the process which calculates the transmission interval instead of the process which acquires a transmission interval is mainly different, the process which calculates a transmission interval is demonstrated.
The process of calculating the transmission interval is performed by the control unit 270 at an appropriate timing before the process of S205, during the process of S205, and after the process of S205.

In this communication system, parameters for calculating the maximum response time of various card commands are included in the medium type acquisition response and transmitted from the medium 300 to the RW 200, and the RW 200 dynamically determines a transmission interval (timeout time). To do. Note that the RW 200 may acquire the above parameters at another timing (appropriate timing) different from the above timing.
Here, the transmission interval is calculated using the following formula (1) which is a well-known technique (Japanese Industrial Standards-JIS-X6919-4: 2010-IC card mounting specification-Part 4: Proximity for high-speed processing) Refer to the type IC card.)
Transmission interval [ms] = 0.30020 × [(B + 1) × n + (A + 1)] × 4 ^E (1)
Note that n is the number of command parameter blocks or the number of service files. A, B, and E are values included in the parameters.

According to the configuration described above, since the transmission interval is dynamically calculated for each attribute of the medium 300, the transmission of the card command at the time of a communication error can be controlled more appropriately.
In the present embodiment, the worst value of transmission intervals (cases that require the most time) when mounted on the medium 300 in individual cases, that is, transmission that enables card commands to be transmitted regardless of how they are mounted. The configuration for determining the interval by the calculation formula has been described.
However, in reality, since the conditions mounted on the medium 300 have already been determined, a configuration that uses a transmission interval shorter than the worst value that is suitable for the implementation is set in the transmission time / transmission interval table. Also good.

<Fourth Embodiment>
In the first embodiment, the configuration in which the card command is transmitted according to the number of transmissions defined in consideration of the communication characteristics such as the communication disabled area is shown. However, characteristics depending on the type of card command to be transmitted are not taken into account, and communication may be wasted. Thus, in the present embodiment, a method for reducing the waste in communication by adopting the number of transmissions defined in consideration of the type of card command will be described.
In the present embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Note that the configuration of the table and the transmission count determination process are mainly different, and will be described.

In the present embodiment, the RW 200 further includes a transmission count table for each card command type (transmission count table for each command type). The command type transmission count table will be described with reference to FIG.
FIG. 15 is a diagram illustrating an example of a transmission count table for each command type. In the command type transmission count table, command type information (an example of message type information) and transmission count information are defined in association with each other. For example, command type information “Read” and transmission count information “1.5” are associated with each other and stored in the ROM 220.

FIG. 16 is a diagram illustrating an example of a flowchart according to the transmission count determination process.
First, the control unit 270 determines whether or not a value (transmission count information) corresponding to the medium type information exists in the transmission count table (S505). At this time, if it is determined that the control unit 270 exists, the process proceeds to S510, and if it is determined that it does not exist, the process proceeds to S515.
In S510, the control unit 270 acquires the transmission count information from the transmission count table (performs the first reading of the first count specifying information), and moves the process to S520. In S515, the control unit 270 acquires default transmission count information from the transmission count table, and moves the process to S520.
In S520, the control unit 270 acquires the transmission count information from the command type transmission count table (performs the second reading of the second count specifying information). Subsequently, the control unit 270 determines the number of transmissions from the acquired two types of transmission number information, and stores it in the RAM 230. For example, when the transmission number information “2” is acquired in S510 and the transmission number information “1.5” is acquired in S520, the control unit 270 determines “3 (= 2 × 1.5)” as the transmission number. To do.

Note that the method of determining the number of transmissions is not limited to four arithmetic operations such as multiplication using two types of transmission number information. For example, the transmission count may be calculated by using two types of transmission count information as coefficients and using a predetermined basic transmission count (standard transmission count individual for RW 200). For example, when the basic transmission count is “3”, the transmission count information is “2”, and the transmission count information is “1.5”, the transmission count is “9 (= 3 × 2 × 1.5)”. Is determined.
Further, the present embodiment is not limited to the configuration described above. For example, instead of the process of S515, a process of reading predetermined default transmission number information from the ROM 220, determining the number of transmissions, and storing it may be adopted. In this case, the control unit 270 ends the process without performing the processes of S520 and S525.

  According to the configuration described above, since the number of transmissions is calculated for each type of card command, it is possible to more appropriately control the transmission of the card command when a communication error occurs.

<Other embodiments>
The present embodiment is not limited to the configuration of the above-described embodiment. For example, in the case of a medium with poor communication characteristics (dual-chip non-contact IC card, mobile phone, etc.), instead of setting the number of transmissions for each fine attribute, a dual-chip non-contact IC card, mobile phone For example, the number of transmissions may be set to a certain level or more.
In addition, the configurations of the above-described embodiments can be appropriately combined and employed. Various programs may be recorded on a recording medium such as a CD-ROM.

  As described above, according to the above-described configuration, it is possible to more appropriately control communication when transmitting message information from the information processing apparatus to the storage medium.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible.

100 server 200 RW
300 medium

Claims (9)

A reading device having a storage unit, receiving message information from an information processing device and transmitting the message information to a storage medium,
Obtaining means for obtaining attribute information indicating an attribute of the storage medium from the storage medium;
Reading out the number of times information corresponding to the attribute information acquired by the acquisition unit from the storage unit in which the attribute information indicating the attribute of the storage medium and the number of times information indicating the number of times of transmission of the message information are stored in association with each other Means,
And a control unit configured to control to transmit the message information to the storage medium in accordance with the number of times information when the message information is received from the information processing apparatus. In the storage unit, attribute information indicating an attribute of the storage medium and time information indicating an interval for transmitting the telegram information are stored in association with each other,
The reading means further reads time information corresponding to the attribute information acquired by the acquiring means from the storage unit,
The control means, when receiving message information from the information processing apparatus, performs control to transmit the message information to the storage medium in accordance with the number of times information for each interval of the time information. The reading device according to claim 1. A calculation unit that calculates time information indicating an interval for transmitting the telegram information using a result of communication with the storage medium;
When receiving the message information from the information processing apparatus, the control unit performs control to transmit the message information to the storage medium according to the number of times information for each time information interval calculated by the calculation unit. The reading device according to claim 1, wherein the reading device is performed.   4. The reading apparatus according to claim 1, wherein the control unit performs control to transmit the message information until a response to the message information is received from the storage medium. 5. A reading device having a storage unit, receiving message information from an information processing device and transmitting the message information to a storage medium,
Obtaining means for obtaining attribute information indicating an attribute of the storage medium from the storage medium;
From the storage unit in which attribute information indicating the attribute of the storage medium and first number specifying information for specifying the number of times to transmit the telegram information are associated and stored, the attribute information acquired by the acquiring unit First reading means for reading corresponding first number-specific information;
When the message information is received from the information processing device, the message type information indicating the type of the message information and the second number specifying information for specifying the number of times to transmit the message information are stored in association with each other. From the second reading means for reading the second number of times identification information corresponding to the message type information of the received message information,
The number of times that the message information is transmitted is calculated from the first number specifying information read by the first reading unit and the second number specifying information read by the second reading unit. And a control unit that performs control to transmit the electronic message information to the storage medium according to the number of times. A control method in a reading device having a storage unit, receiving message information from an information processing device and transmitting the message information to a storage medium,
An acquisition step of acquiring attribute information indicating an attribute of the storage medium from the storage medium;
Reading out the number of times information corresponding to the attribute information acquired in the acquisition step from the storage unit in which the attribute information indicating the attribute of the storage medium and the number of times information indicating the number of times of transmission of the message information are stored in association with each other Process,
And a control step of performing control to transmit the message information to the storage medium according to the number of times information when the message information is received from the information processing apparatus. A control method in a reading device having a storage unit, receiving message information from an information processing device and transmitting the message information to a storage medium,
An acquisition step of acquiring attribute information indicating an attribute of the storage medium from the storage medium;
From the storage unit in which attribute information indicating the attribute of the storage medium and the first number specifying information for specifying the number of times to transmit the telegram information are associated and stored, the attribute information acquired in the acquiring step A first reading step of reading the corresponding first number specifying information;
When the message information is received from the information processing device, the message type information indicating the type of the message information and the second number specifying information for specifying the number of times to transmit the message information are stored in association with each other. From the second reading step of reading the second number of times identification information corresponding to the message type information of the received message information,
The number of times that the message information is transmitted is calculated from the first number of times specifying information read in the first reading step and the second number of times specifying information read in the second reading step. And a control step of performing control to transmit the message information to the storage medium according to the number of times. A computer having a storage unit, receiving the message information from the information processing apparatus and transmitting the message information to a storage medium;
Obtaining means for obtaining attribute information indicating an attribute of the storage medium from the storage medium;
Reading out the number of times information corresponding to the attribute information acquired by the acquisition unit from the storage unit in which the attribute information indicating the attribute of the storage medium and the number of times information indicating the number of times of transmission of the message information are stored in association with each other Means,
When receiving message information from the information processing apparatus, a program that functions as a control unit that performs control to transmit the message information to the storage medium in accordance with the number of times information. A computer having a storage unit, receiving the message information from the information processing apparatus and transmitting the message information to a storage medium;
Obtaining means for obtaining attribute information indicating an attribute of the storage medium from the storage medium;
From the storage unit in which attribute information indicating the attribute of the storage medium and first number specifying information for specifying the number of times to transmit the telegram information are associated and stored, the attribute information acquired by the acquiring unit First reading means for reading corresponding first number-specific information;
When the message information is received from the information processing device, the message type information indicating the type of the message information and the second number specifying information for specifying the number of times to transmit the message information are stored in association with each other. From the second reading means for reading the second number of times identification information corresponding to the message type information of the received message information,
The number of times that the message information is transmitted is calculated from the first number specifying information read by the first reading unit and the second number specifying information read by the second reading unit. A program that functions as a control unit that performs control to transmit the electronic message information to the storage medium according to the number of times.

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