JP4891708B2 - Information communication medium - Google Patents

Description

  The present invention relates to an information communication medium having a wireless communication function and communicating with a reader / writer by electromagnetic waves, for example.

  Conventionally, a non-contact IC card as a portable electronic medium defines a key file, a data file, and the like necessary for its use purpose and use purpose on a non-volatile memory inside the non-contact IC card. Furthermore, it becomes a usable state by writing data in those files. This procedure is generally called non-contact type IC card issue processing.

  The non-contact type IC card incorporates a non-contact type IC chip as an integrated circuit having a CPU, ROM, RAM, nonvolatile memory and the like. In the manufacturing stage, a control program corresponding to each command for processing a command from the outside is recorded in advance in the ROM or the like. In such a non-contact type IC card, a function for executing an issuing process according to an issuing command such as a data write request from the issuing device in the above issuing process is prepared in advance.

  In principle, a non-contact type IC card executes one process with one command and returns a response indicating the processing result. For example, in non-contact IC card issuance processing, one command defines one file on the non-volatile memory or writes one unit of data, and returns the processing result as a response. ing. For this reason, in the conventional non-contact IC card issuance processing, the issuance device transmits the issuance command to each non-contact IC card by the number of files and data necessary for the issuance processing, and each non-contact IC card issues This is done by sequentially executing instructions and returning a response indicating the execution result to the issuing device.

  In particular, since non-contact IC cards generally handle important information such as financial information and personal information, the reliability and security of data recorded in the non-contact IC card are emphasized. . In order to increase the reliability and security of data in response to such a request, the non-contact type IC card is a sequential system that receives and processes the next command after the processing of the given command is completely completed. Adopt processing. Furthermore, in recent years, contactless IC cards have been used in various fields. For this reason, the non-contact type IC card has become multifunctional, and one card has various functions. In such a multi-function non-contact IC card, it is necessary to define many files in a non-volatile memory or write a large amount of data in the issuing procedure.

Patent Document 1 discloses an integrated circuit used for a portable electronic medium and a portable electronic medium issuance method in which an issuance processing antenna is mounted to shorten an issuance time. For issue processing, a new antenna for communication at a higher frequency than usual is added, and at the time of issue, the issue time can be shortened by performing communication corresponding to the antenna.
JP 2005-275456 A

  In Patent Document 1, only the frequency of the non-contact type IC card is changed, and the detailed communication method is not changed. Therefore, there is a problem that a device such as assigning a communication method for use in a specific application is reduced. .

  Furthermore, since the carrier frequency of the non-contact type IC card can be predicted to some extent if an impedance analyzer or the like is used, there is a problem that it is easily analyzed when it is passed to a forger. In addition, two antennas for issuance processing and normal use are required, which increases the cost.

  One of the objects of the present invention is to provide a non-contact type IC card that enables communication according to applications.

  An information communication medium according to an embodiment of the present invention is an information communication medium configured by a card body in which a module is embedded, and the module includes a communication unit that communicates with an external device, and the communication unit. Determining means for determining the communication method of the received signal, and selecting means for selecting the communication method based on the determination result of the determining means from a plurality of communication methods.

  In the case of an information tactile communication medium capable of leaving an error history or the like, an issuer or the like can check the contents using a communication method for specific applications. Moreover, misuse of the person who does not know the communication method for specific uses can be prevented. If writing is possible only in the communication method for specific applications, the contents described in the storage medium cannot be changed in the communication method for normal use, and security is improved. Therefore, even if the unissued information communication medium is stolen during transportation, it cannot be issued even if the forger knows the known normal communication method.

  The configuration of non-contact IC cards (information communication media) according to various embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a non-contact type IC card according to an embodiment of the present invention. A non-contact IC card (information communication medium) 10 includes an antenna 101, a transmission unit 102, a transmission system 107, a reception unit 108, a reception system 113, a power supply unit 114, a CPU (Central Processing Unit) 115, and a ROM (Read Only Memory). 116, RAM (Random Access Memory) 117, and EEPROM (Electrically Erasable and Programmable ROM) 118.

  The antenna 101 receives a signal from a communication terminal having a card reader / writer, and transmits a signal to the communication terminal. That is, the antenna 101 functions as an I / F for transmitting / receiving data to / from a communication terminal.

  The reception unit 108 is configured by an amplifier or the like, and is a circuit that converts a signal received by the antenna 101 into a signal that can be easily processed by the reception system 113. Further, the determination unit 1151 of the CPU 115 detects the communication method of the received signal by the reception unit 108. The reception system 113 includes a demodulation unit a109, a decoding unit a110, a demodulation unit b111, and a decoding unit b112. The demodulation unit a109 or the demodulation unit b111 arbitrarily demodulates a predetermined carrier wave of the signal. The decoding unit a110 or the decoding unit b112 decodes the demodulated signal and binarizes it.

The reception system 113 can be switched by the CPU 115, and the demodulation unit and the decoding unit can be combined as follows. (Demodulation unit, decoding unit) are (demodulation unit a109, decoding unit a110), (demodulation unit a109, decoding unit b112), (demodulation unit b111, decoding unit a110), (demodulation unit b111, decoding) Part b112).

  The power supply unit 114 stabilizes the rectified output from the signal received by the antenna 101 to generate operating power, and supplies the operating power to the CPU 115 and other circuit units.

  The CPU 115 includes a determination unit 1151, a selection unit 1152, an execution unit 1153, and a counter 1154. The determination unit 1151 determines the communication method (demodulation method and decoding method) of the signal received by the antenna 101. The selection unit 1152 switches and controls the reception system 113 according to the communication method of the received signal. The execution unit 1153 demodulates and encodes the signal in the switched reception system 113, interprets the command included in the signal, and executes it. The counter 1154 counts the number of accesses by a communication method other than the communication method permitted to be accessed.

  The ROM 116 stores a control program executed by the CPU 115 and the like. In addition, the ROM 116 stores a plurality of communication conditions (a plurality of communication protocols, a plurality of communication parameters (for example, a plurality of communication rates)) including initial communication conditions (communication protocol, communication parameters (for example, a communication rate)). . The RAM 117 temporarily stores processing results executed by the CPU 115. In addition, the RAM 117 stores communication conditions selected from a plurality of communication conditions stored in the ROM 116. The EEPROM 118 is a non-volatile memory, and a process corresponding to a command included in the received signal is written, and is read and written by the CPU 115.

  The transmission system 107 includes a modulation unit a103, an encoding unit a104, a modulation unit b105, and an encoding unit b106. The encoding unit a104 or the encoding unit b106 encodes the binarized signal. The modulation unit a103 or the modulation unit b105 modulates the encoded signal. The transmission unit 102 is configured by an amplifier or the like, and amplifies the signal converted by the transmission system 107 in order to transmit it to the communication terminal via the antenna 101. The transmission system 107 can be switched by the CPU 115, and the modulation unit and the encoding unit can be combined as follows. (Modulator, encoder) are (modulator a103, encoder a104), (modulator a103, encoder b106), (modulator b105, encoder a106), (modulator b105, encoder) Part b106).

  The selection unit 1152 of the CPU 115 can switch the transmission system 107 corresponding to the switched reception system 113. In this case, the selection unit 1152 of the CPU 115 corresponds to the selection of the demodulation unit a109, the modulation unit a103 corresponding to the selection of the decoding unit a110, and the modulation unit b105 corresponding to the selection of the demodulation unit b111. In response to the selection of the decoding unit b112, the coding unit b106 is switched. Demodulation scheme a (modulation scheme a) is used in demodulation section a109 (corresponding modulation section a103), and decoding scheme a (coding scheme a) is used in decoding section a110 (corresponding encoding section a104). Demodulation unit b111 (corresponding modulation unit b105) uses demodulation scheme b (modulation scheme b), and decoding unit b112 (corresponding encoding unit b106) uses decoding scheme b (encoding scheme b).

  In this embodiment shown in FIG. 1, as a communication method, a demodulator a109 (corresponding modulator a103), a decoder a110 (corresponding encoder a104), a demodulator b111 (corresponding modulator b105), decoding Although switching of the unit b112 (corresponding encoding unit b106) has been described, in addition to this, switching or switching of frame formats can be added. The frame format is SOF (Start of Frame), EOF (End of Frame), or the like in ISO / IEC 144443-3. It is possible to increase the types of communication methods by changing the length of the detection code of the frame. As modulation methods, there are ASK (amplitude modulation, amplitude shift keying), PSK (phase modulation, phase shift keying), FSK (frequency modulation, frequency shift keying) and the like. As an encoding method, there are NRZ (Non Return to Zero), NRZ-L (Non Return to Zero-Level), a modified mirror method, a Manchester method, and the like. By combining these, various communication methods can be realized. In addition to the above, it is possible to combine three or more modulation schemes and three or more encoding schemes.

  FIG. 2 shows a flowchart showing switching of communication methods in the non-contact type IC card 10. Determination section 1151 determines whether the modulation scheme of the signal transmitted from the communication terminal received by antenna 101 is modulation scheme a or modulation scheme b (step S100). Next, the determination unit 1151 determines whether the encoding method of the received signal is the encoding method a or the encoding method b (step S101). That is, the determination unit 1151 has combinations of (modulation method, coding method) of received signals (modulation method a, coding method a), (modulation method a, coding method b), (modulation method b, It is determined whether the encoding scheme a) or (modulation scheme b, encoding scheme b) is applicable. When the determination unit 1151 determines that the received signal is the modulation scheme a and the encoding scheme a, it determines that the received signal is a normal use (step S102). If the determination unit 1151 determines that the received signal is the modulation scheme a and the encoding scheme b, it determines that the specific use is a (step S103). If the determination unit 1151 determines that the received signal is the modulation scheme b and the encoding scheme a, it determines that the specific use b (step S104). If the determination unit 1151 determines that the received signal is the modulation scheme b and the encoding scheme b, it determines that the specific use c (step S105).

  When the determination unit 1151 determines that the received signal is for normal use (step S102), the selection unit 1152 converts the reception system 113 into the demodulation unit a109, the decoding unit a110, the transmission system 107 into the modulation unit a103, and the encoding unit a104. Switch. Then, the execution unit 1153 communicates with a general command / response conforming to, for example, ISO / IEC14443. Since the function can be executed by following the communication procedure according to such a standard, it is convenient when compatibility is required.

  When the determination unit 1151 determines that the received signal is the specific application a (step S103), the selection unit 1152 uses the reception system 113 as the demodulation unit a109, the decoding unit b111, the transmission system 107 as the modulation unit a103, and the encoding unit b105. Switch to. The use of the communication method for the specific application a (step S103) is, for example, the issuance of the non-contact type IC card 10. In the issuance of the non-contact type IC card 10, in the case of issuance, speeding up is desired. Therefore, it is possible to devise such that the issue can be completed by transmitting and receiving at one time without defining the command / response length that can be transmitted at one time. When following the authentication procedure, it is possible to add some commands and responses.

  Here, when an error such as command processing occurs during communication with a communication terminal using the normal communication method (modulation method a, encoding method a), the execution unit 1153 displays an error log indicating the error content and the like. It can be recorded in the EEPROM 118 as a history. FIG. 3 shows a memory map of the error log in the EEPROM 118. The EEPROM 118 has a memory area in which data is written or read by the normal communication method and an error log area in which a history of errors that occur during communication by the normal communication method is stored.

  In the normal communication method, the CPU 115 can access the normal use area of the EEPROM 118 for writing or reading, but cannot access the error log area of the EEPROM 118. Here, for example, when accessed from a communication terminal by a communication method (modulation method b, encoding method a) for a specific application b, it is set in advance in the ROM 116 or the like so that the error log area of the EEPROM 118 can be accessed. I can leave. Then, the execution unit 1153 of the CPU 115 transmits the error history stored in the error log area of the EEPROM 118 to the communication terminal. The communication method (modulation method b, encoding method b) for the specific application c can be set so that it can be used only for another specific application.

  In addition, the communication method of the specific application a is used for issuing the non-contact type IC card 10, and after the issuance of the non-contact type IC card 10 is completed, the CPO 115 is stored in the ROM 116 so that communication can be performed only by a normal communication method. Settings can be stored. By setting in this way, unauthorized access can be prevented. FIG. 5 is a flowchart for enabling unauthorized access prevention indicating access frequency limitation when accessed by a communication method other than the normal communication method. The communication method for the normal use is a modulation method a and the coding method a. For example, it is assumed that the number of unauthorized accesses is three or more from the communication terminal in a communication method other than the communication method for the normal use. In this case, the execution unit 1153 of the CPU 115 controls the non-contact IC card 10 to be unusable by electrically disconnecting the antenna 101. After the issuance of the non-contact type IC card 10 is completed, the execution unit 1153 of the CPU 115 sets the number of unauthorized accesses n in the communication method other than the normal one of the counter 1154 to 0 (step S200). Next, the non-contact IC card 10 enters the communication area of the communication terminal, and the non-contact IC card 10 receives a signal from the communication terminal. The determination unit 1151 of the CPU 115 determines whether or not the modulation method of the signal received by the non-contact type IC card 10 is the modulation method a (step S201).

  When the modulation method of the received signal is modulation method a (YES in step S201), the determination unit 1151 of the CPU 115 determines whether or not the encoding method of the signal received by the non-contact IC card 10 is the encoding method a. (Step S202). When the encoding method of the received signal is encoding method a (step S202, YES), the determination unit 1151 determines that the communication method is a normal communication method. Then, the selection unit 1152 switches the transmission system 107 and the reception system 113 so as to conform to the normal communication method. And the execution part 1153 performs communication by the communication system for normal use.

  When the encoding method of the received signal is not encoding method a (step S202, NO), the determination unit 1151 determines that the access has been made with a communication method other than the normal communication method. Then, the execution unit 1153 counts the counter 1154 by increasing the number of unauthorized accesses by 1 by the number of unauthorized accesses n + 1 (step S204). Then, the execution unit 1153 determines whether or not the number of unauthorized accesses n is 3 or more (step S206). If the number of unauthorized accesses is 3 or more (step S206, YES), the execution unit 1153 controls the non-contact IC card 10 to be unusable by electrically disconnecting the antenna 101. Therefore, the determination unit 1151 does not determine the communication method of the signal received from the communication terminal. If the number of unauthorized accesses is not 3 or more (step S206, NO), the determination unit 1151 determines again whether or not the modulation method of the signal received by the non-contact IC card 10 is the modulation method a (step S201).

  When the modulation scheme of the received signal is modulation scheme a (YES in step S201), the execution unit 1153 increments the number of unauthorized accesses by 1 based on the number of unauthorized accesses n + 1 of the counter 1154 and counts (step S204). Then, the process proceeds to step S206, and the execution unit 1153 determines whether or not the number of unauthorized accesses n is 3 or more (step S206).

  As described above, even if it is accessed by a random non-normal communication method due to theft, by limiting the unauthorized access, limit the opportunity for the thief to try to access using different communication methods over and over again. Can improve security.

  Next, an example in which three communication methods of specific application a, specific application b, and specific application c are used for issuing processing of the non-contact type IC card 10 will be described. For example, in the issuance of the non-contact type IC card 10, information that is set so that the issuance process is performed in the order of the communication methods of the specific application a, the specific application b, and the specific application c is stored in the ROM 116. Here, when an issuance process is attempted using a communication method other than the communication method (modulation method a, encoding method b) at the stage of specific application b in the issuance process, the execution unit 1153 of the CPU 115 electrically connects the antenna 101. It cut | disconnects and it controls so that the non-contact-type IC card 10 becomes unusable.

  For example, when the card before the issuance process is stolen, the communication method used for the issuance process and the use after the issuance process is the same, or the communication system used for the use after the issuance process and the issuance process is different. However, when there is a single communication method used for the issuing process, there is a high possibility that the communication method used for the issuing process is easily overlooked. According to the above-described example, by using a plurality of different communication methods for the issuance process in a prescribed order, the non-contact IC card 10 stolen before the issuance process is not forged and the security is improved.

  As described above, the CPU 115 of the non-contact type IC card 10 can be operated in various ways by switching a plurality of communication methods (modulation method, encoding method, frame format, etc., or a combination thereof) for specific applications. Thus, security and maintainability can be improved.

  FIG. 5 is a diagram showing a schematic configuration of a contact IC card according to another embodiment of the present invention. Similarly to the non-contact IC card 10, the contact IC card 20 can set a plurality of communication methods. The contact IC card 20 includes an I / O IF (Input / Output Interface) 201, a transmission unit 202, a transmission system 207, a reception unit 208, a reception system 213, a power supply unit 214, a CPU 216, a RAM 217, and an EEPROM 218.

  The I / O IF 201 receives a signal from an external device having a card reader / writer or transmits a signal to a communication terminal. That is, the I / O IF 201 functions as an I / F for transmitting / receiving data to / from a communication terminal.

  The reception unit 208 is configured by an amplifier or the like, and is a circuit that converts a signal received by the I / O IF 201 into a signal that can be easily processed by the reception system 213. Further, the determination unit 2151 of the CPU 215 detects the communication method of the received signal by the reception unit 208. The reception system 213 includes a frame format reading unit a209, a decoding unit a210, a frame format reading unit b211, and a decoding unit b212. The frame format reading unit a209 or the frame format reading unit b111 reads data from the frame format of the signal. The decryption unit a210 or the decryption unit b212 decrypts the data. The reception system 213 can be switched by the CPU 215, and the frame format reading unit and the decoding unit can be combined as follows. (Frame format reading unit, decoding unit) are (Frame format reading unit a209, Decoding unit a210), (Frame format reading unit a209, Decoding unit b212), (Frame format reading unit b211, Decoding unit a210) , (Frame format reading unit b211, decoding unit b212).

  The power supply unit 214 stabilizes the rectified output from the signal received by the I / O IF 201 to generate operating power, and supplies this operating power to the CPU 215 and other circuit units.

  The CPU 215 includes a determination unit 2151, a selection unit 2152, an execution unit 2153, and a counter 2154. The determination unit 2151 determines the communication method (frame format and decoding method) of the signal received by the I / O IF 201. The selection unit 2152 switches and controls the reception system 213 according to the communication method of the received signal. The execution unit 2153 reads and encodes the frame format of the signal in the switched reception system 213, interprets the command included in the signal, and executes it. The counter 2154 counts the number of accesses by a communication method other than the communication method permitted for access.

  The ROM 216 stores a control program executed by the CPU 215 and the like. The ROM 216 stores a plurality of communication conditions (a plurality of communication protocols, a plurality of communication parameters (for example, a plurality of communication rates)) including initial communication conditions (communication protocol, communication parameters (for example, a communication rate)). . The RAM 217 temporarily stores a result of processing executed by the CPU 215 and the like. In addition, the RAM 217 stores communication conditions selected from a plurality of communication conditions stored in the ROM 216. The EEPROM 218 is written with a process corresponding to the command included in the received signal, and is written and read by the execution unit 2153 of the CPU 215.

  The transmission system 207 includes a frame format storage unit a203, an encoding unit a204, a frame format storage unit b205, and an encoding unit b206. The encoding unit a204 or the encoding unit b206 encodes the binarized signal. The frame format storage unit a103 or the frame format storage unit b105 stores the encoded signal in the frame format. The transmission unit 202 is configured by an amplifier or the like, and amplifies the signal converted by the transmission system 207 for transmission to the communication terminal via the I / O IF 201. The transmission system 207 can be switched by the CPU 215, and the frame format storage unit and the encoding unit can be combined as follows. (Frame format storage unit, encoding unit) are (frame format storage unit a203, encoding unit a204), (frame format storage unit a203, encoding unit b206), (frame format storage unit b205, encoding unit a206) , (Frame format storage unit b205, encoding unit b206).

The selection unit 2152 of the CPU 215 can switch the transmission system 207 corresponding to the switched reception system 213. In this case, the selection unit 2152 of the CPU 215 selects the frame format storage unit a203 corresponding to the selection of the frame format reading unit a109, and selects the encoding unit a204 and the frame format reading unit b211 corresponding to the selection of the decoding unit a210. Correspondingly, the frame format storage unit b205 and the decoding unit b212 are switched to the encoding unit b206 corresponding to the selection.

The frame format reading unit a209 (corresponding frame format storage unit a203) has a frame format reading method a (frame format storage method a), and the decoding unit a210 (corresponding encoding unit a204) has a decoding method a (encoding method). a) is used. Frame format reading unit b211 (corresponding frame format storage unit b205) uses frame format reading method b (frame format storage method b), and decoding unit b112 (corresponding encoding unit b106) uses decoding method b (encoding method). b) is used.

  FIG. 6 is a flowchart showing switching of communication methods in the contact IC card 10. The determination unit 2151 determines whether the frame format of the signal transmitted from the external device received by the I / O IF 201 is the frame format a or the frame format b (step S300). Next, the determination unit 2151 determines whether the encoding method of the received signal is the encoding method a or the encoding method b (step S301). In other words, the determination unit 2151 has combinations of (frame format, encoding method), (frame format a, encoding method a), (frame format a, encoding method b), (frame format b, It is determined whether the encoding method a) or (frame format b, encoding method b) is applicable. If the determination unit 2151 determines that the received signal is the frame format a and the encoding method a, it determines that the received signal is a normal use (step S302). If the determination unit 2151 determines that the received signal is the frame format a and the encoding method b, it determines that the specific use is a (step S303). If the determination unit 2151 determines that the received signal is the frame format b and the encoding method a, it determines that the specific use b (step S304). If the determination unit 2151 determines that the received signal is the frame format b and the encoding method b, it determines that the specific use c (step S305).

  When the determination unit 2151 determines that the received signal is for normal use (step S302), the selection unit 2152 has the reception system 213 as the frame format reading unit a209, the decoding unit a210, the transmission system 207 as the frame format storage unit a203, and the code. Switch to the conversion unit a204.

  When the determination unit 2151 determines that the received signal is the specific use a (step S303), the selection unit 2152 includes the reception system 213 as the frame format reading unit a209, the decoding unit b211 and the transmission system 207 as the frame format storage unit a203, Switch to the encoding unit b205. The use of the communication method for the specific application a (step S303) is, for example, the issuance of the contact IC card 20.

  The present invention is not limited to the above-described embodiment, and can be variously modified within the scope of the gist of the present invention or a future implementation stage based on the technology available at that time. It is. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some configuration requirements are deleted from all the configuration requirements shown in the embodiment, a configuration from which these configuration requirements are deleted can be extracted as an invention.

The figure which shows schematic structure of the non-contact-type IC card which concerns on one Embodiment of this invention. The flowchart which shows switching of the communication system of the non-contact-type IC card which concerns on one Embodiment of this invention. The flowchart which shows the communication system determination of the non-contact-type IC card which concerns on one Embodiment of this invention. The figure which shows the memory map of the memory | storage part of the non-contact-type IC card which concerns on one Embodiment of this invention. The figure which shows schematic structure of the contact-type IC card which concerns on one Embodiment of this invention. The flowchart which shows switching of the communication system of the contact-type IC card which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Non-contact IC card, 101 ... Antenna, 102 ... Transmission part, 103 ... Modulation part a, 104 ... Encoding part a, 105 ... Modulation part b, 106 ... Encoding part b, 107 ... Transmission system, 108 ... Receiving unit 109 ... demodulating unit a 110 110 decoding unit a 111 111 demodulating unit b 112 decoding unit 113 113 receiving system 114 power unit 115 CPU 116 ROM 117 , 118... EEPROM, 1151... Discriminating unit, 1152... Selecting unit, 1153.

Claims (9)

An information communication medium composed of a card body in which a module is embedded,
The module is
A communication means for communicating with an external device;
Determining means for determining a communication method of a signal received via the communication means;
Selecting means for selecting the communication method based on the determination result of the determining means from a plurality of communication methods having a specific communication method for a specific application at the time of issuance and a normal communication method for normal use after completion of issuance ;
Execution means for executing communication according to the communication method selected by the selection means;
An information communication medium comprising: The communication method according to claim 1, wherein the information communication medium, which is a combination of a modulation scheme and coding scheme. 3. The information according to claim 2, further comprising a storage unit that stores a communication history based on the determination that the access is performed by a communication method other than the normal communication method by the determination unit after the issue is completed. Communication medium. The storage means may store error accessing in said normal communication mode as the communication error history, according to claim 3, characterized in that the communication error history is read out by the specific communication scheme for the particular application Information communication medium. Communicate with external devices,
Determine the communication method of the received signal,
The communication method based on the determination result is selected from a plurality of communication methods having a specific communication method for specific use at the time of issuance and a normal communication method for normal use after completion of the issuance ,
A method for recognizing an information communication medium, comprising performing communication according to a selected communication method. 6. The information communication recognition method according to claim 5 , wherein the communication method is a combination of a modulation method and an encoding method. 7. The information communication medium recognition method according to claim 6 , wherein a communication history is stored based on the determination that the access is made by a communication method other than the normal communication method after the issuance is completed. 8. The information communication medium recognition method according to claim 7 , wherein an error during the access in the normal communication method is stored as a communication error history, and the communication error history is read out in the specific communication method for the specific application. . An IC card composed of a card body in which a module is embedded,
The module is
A communication means for communicating with an external device;
Determining means for determining a communication method of a signal received via the communication means;
Selecting means for selecting the communication method based on the determination result of the determining means from a plurality of communication methods having a specific communication method for a specific application at the time of issuance and a normal communication method for normal use after completion of issuance;
Execution means for executing communication according to the communication method selected by the selection means;
An IC card characterized by comprising:

Images