JP6092342B2 - Non-contact portable electronic device and method for issuing non-contact portable electronic device - Google Patents

Description

  Embodiments described herein relate generally to a contactless portable electronic device and a method for issuing the contactless portable electronic device.

  In general, an IC card used as a portable electronic device includes a card-like main body formed of plastic or the like and an IC module embedded in the main body. The IC module has an IC chip. The IC chip has a nonvolatile memory such as an EEPROM (Electrically Erasable Programmable Read-Only Memory) or a flash ROM that can hold data even in the absence of a power source, and a CPU that executes various operations.

  The IC card is, for example, an IC card conforming to international standards ISO / IEC7816 and ISO / IEC14443. The IC card is excellent in portability and can perform communication with an external device and complicated calculation processing. Further, since it is difficult to forge, the IC card is assumed to store highly confidential information and be used for a security system, electronic commerce, and the like.

  In recent years, IC cards capable of transmitting and receiving data by non-contact communication have become popular. An IC card that performs non-contact communication as described above includes an IC chip and an antenna. An IC card operates by receiving a magnetic field generated from a reader / writer of an IC card processing apparatus that processes the IC card and causing an antenna in the card to generate electricity by electromagnetic induction. Further, when the IC card receives a command from the processing device by non-contact communication, the IC card executes an application according to the received command. Thereby, the IC card can realize various functions.

  The IC card processing device transmits an initial response request command by wireless communication at a standard communication speed. When receiving the initial response request command, the IC card generates a response (initial response) to the initial response request command and transmits the generated response to the processing device. By receiving the response, the processing device can recognize that the IC card exists in the communicable range.

Japanese Patent No. 3488166

  When there are a plurality of IC cards within the communicable range of the processing device, responses to the initial response request command are transmitted from the plurality of IC cards. In such a case, the processing device can receive a response from each IC card by setting a slot and performing anti-collision according to the set slot. Further, the processing device can write data to the IC card by setting a communication speed and the like with each IC card and transmitting / receiving commands and responses.

  For example, when writing similar data to a plurality of IC cards, the processing apparatus needs to perform anti-collision as described above, and there is a problem that processing takes time.

  Then, it aims at providing the issuing method of the non-contact portable electronic device which can perform non-contact communication faster, and a non-contact portable electronic device.

A non-contact portable electronic device according to an embodiment performs non-contact communication with an external device, executes processing based on a command from the external device, and transmits a processing result to the external device as a response. A contact-type portable electronic device including a mode storage unit, a reception unit, a command processing unit, a response generation unit, a transmission unit, and a control unit. The mode storage unit stores a mode flag indicating whether the state of the contactless portable electronic device is an issue mode or an operation mode . The receiving unit receives a command transmitted from the external device in a contactless manner.
The command processing unit executes processing based on the command received by the receiving unit. The response generation unit generates a response as a result of processing by the command processing unit. The transmission unit transmits the response generated by the response generation unit to the external device without contact. When the control unit executes the predetermined command and the mode flag stored in the mode storage unit is the operation mode, the control unit transmits the response generated by the response generation unit to the external device by the transmission unit. When the same command as the predetermined command is transmitted and the mode flag stored in the mode storage unit is in the issue mode, the response generated by the response generation unit is sent to the external device. Control not to send.

FIG. 1 is a diagram for explaining an IC card processing system according to an embodiment. FIG. 2 is a diagram for explaining an IC card according to an embodiment. FIG. 3 is a diagram for explaining an IC card processing system according to an embodiment. FIG. 4 is a diagram for explaining an IC card processing system according to an embodiment. FIG. 5 is a diagram for explaining an IC card processing system according to an embodiment. FIG. 6 is a diagram for explaining an IC card processing system according to an embodiment. FIG. 7 is a diagram for explaining processing of the IC card according to the embodiment.

  Hereinafter, a portable electronic device, a processing device for a portable electronic device, and a processing system for a portable electronic device according to an embodiment will be described in detail with reference to the drawings.

  A portable electronic device (IC card) 20 and a processing device (terminal device) 10 for processing an IC card according to the present embodiment have a non-contact communication function defined by, for example, ISO / IEC14443. Thereby, the IC card 20 and the terminal device 10 can transmit and receive data to and from each other.

FIG. 1 shows a configuration example of an IC card processing system 1 according to an embodiment.
The IC card processing system 1 includes a terminal device 10 that processes the IC card 20 and an IC card 20. As described above, the terminal device 10 and the IC card 20 transmit and receive various data by non-contact communication.

  The terminal device 10 includes a CPU 11, a ROM 12, a RAM 13, a nonvolatile memory 14, a transmission / reception unit 15, a resonance unit 16, a logic unit 17, a host interface 18, and a power supply unit 19. The CPU 11, the ROM 12, the RAM 13, the nonvolatile memory 14, the transmission / reception unit 15, the resonance unit 16, the logic unit 17, and the host interface 18 are connected to each other via a bus.

  The CPU 11 functions as a control unit that controls the entire terminal device 10. The CPU 11 performs various processes based on the control program and control data stored in the ROM 12 or the nonvolatile memory 14. For example, the CPU 11 transmits and receives commands and responses to and from the IC card 20 via the transmission / reception unit 15 and the resonance unit 16.

  The ROM 12 is a non-volatile memory that stores a control program and control data in advance. The RAM 13 is a volatile memory that functions as a working memory. The RAM 13 temporarily stores data being processed by the CPU 11. For example, the RAM 13 temporarily stores data to be transmitted / received to / from an external device via the transmission / reception unit 15 and the resonance unit 16. The RAM 13 temporarily stores a program executed by the CPU 11.

  The nonvolatile memory 14 includes, for example, an EEPROM, an FRAM, and the like. The nonvolatile memory 14 stores, for example, a control program, control data, an application, and data used for the application.

  The transmission / reception unit 15 and the resonance unit 16 are interface devices for communicating with the IC card 20. The transmission / reception unit 15 and the resonance unit 16 are configured as, for example, a card reader / writer.

  The transmission / reception unit 15 performs signal processing on data transmitted / received by the resonance unit 16. For example, the transmission / reception unit 15 performs encoding, decoding, modulation, and demodulation. The transmission / reception unit 15 supplies the encoded and modulated data to the resonance unit 16.

  Note that the CPU 11 sets a communication speed when data is transmitted to the IC card 20 by the resonance unit 16. The transmission / reception unit 15 controls data transmitted to the IC card 20 at the communication speed set by the CPU 11. Further, the transmission / reception unit 15 analyzes data received from the IC card 20 at the communication speed set by the CPU 11.

  The resonating unit 16 includes an antenna having a predetermined resonance frequency, for example. The resonance unit 16 generates a magnetic field according to data supplied from the transmission / reception unit 15. Thereby, the terminal device 10 can transmit data to the IC card 20 existing in the communicable range in a non-contact manner.

  The resonating unit 16 detects a magnetic field and generates data according to the detected magnetic field. Thereby, the resonance part 16 can receive data non-contactingly. The resonance unit 16 supplies the received data to the transmission / reception unit 15. The transmission / reception unit 15 demodulates and decodes the data received by the resonance unit 16. Thereby, the terminal device 10 can acquire the original data transmitted from the IC card 20.

  The logic unit 17 performs predetermined calculation processing. For example, the logic unit 17 performs arithmetic processing such as data encryption, decryption, and random number generation based on the control of the CPU 11.

  The upper interface 18 is an interface for communicating with the upper terminal. The host terminal includes, for example, an operation unit and a display unit. The operation unit includes an operation key, for example, and generates an operation signal based on an operation input by the operator. The display unit displays various information. The upper interface 18 receives data from the upper terminal and transmits it to the CPU 11. The upper interface 18 may be configured to transmit data acquired from the IC card 20 by the transmission / reception unit 15 and the resonance unit 16 to the upper terminal.

The power supply unit 19 supplies power to each unit of the terminal device 10.
In addition, the nonvolatile memory 14 includes a storage unit 14a that stores a list regarding the number of slots in anti-collision. The storage unit 14a stores, for example, a table input from the upper terminal via the upper interface 18. In addition, when the terminal device 10 includes an operation unit that receives an operation input, the storage unit 14a may be configured to store a table corresponding to an operation input to the operation unit. Further, the ROM 12 may be configured to include a storage unit 14a that stores a table. The table will be described later.

FIG. 2 shows a configuration example of the IC card 20 according to one embodiment.
As shown in FIG. 2, the IC card 20 includes, for example, a rectangular main body 21 and an IC module 22 built in the main body 21. The IC module 22 includes an IC chip 23 and a resonance unit (antenna) 24. The IC chip 23 and the resonance unit 24 are formed in the IC module 22 in a state where they are connected to each other.

  The main body 21 is not limited to a rectangular shape, and may have any shape as long as the IC module 22 in which at least the resonating portion 24 is disposed can be installed.

  The IC chip 23 includes a CPU 25, a ROM 26, a RAM 27, a nonvolatile memory 28, a transmission / reception unit 29, a power supply unit 31, a logic unit 32, and the like. The CPU 25, the ROM 26, the RAM 27, the nonvolatile memory 28, the transmission / reception unit 29, the power supply unit 31, and the logic unit 32 are connected to each other via a bus.

  The resonance unit 24 is an interface for communicating with the resonance unit 16 of the terminal device (external device) 10. The resonating unit 24 includes, for example, an antenna coil configured by a metal wire disposed in a predetermined shape in the IC module 22.

  The IC card 20 generates a magnetic field by the antenna coil in accordance with data transmitted to the terminal device 10. Thereby, the IC card 20 can transmit data to the terminal device 10. Further, the IC card 20 recognizes data transmitted from the terminal device 10 based on the induced current generated in the antenna coil by electromagnetic induction.

  The CPU 25 functions as a control unit that controls the entire IC card 20. The CPU 25 performs various processes based on the control program and control data stored in the ROM 26 or the nonvolatile memory 28. For example, various processes are performed in accordance with commands received from the terminal device 10 and data such as responses as processing results is generated.

  The ROM 26 is a non-volatile memory that stores a control program and control data in advance. The ROM 26 is incorporated in the IC card 20 in a state where a control program, control data, and the like are stored at the manufacturing stage. That is, the control program and control data stored in the ROM 26 are incorporated in advance according to the specifications of the IC card 20.

  The RAM 27 is a volatile memory that functions as a working memory. The RAM 27 temporarily stores data being processed by the CPU 25. For example, the RAM 27 temporarily stores data received from the terminal device 10 via the resonance unit 24. The RAM 27 temporarily stores data to be transmitted to the terminal device 10 via the resonance unit 24. Furthermore, the RAM 27 temporarily stores a program executed by the CPU 25.

  The non-volatile memory 28 includes a non-volatile memory capable of writing and rewriting data, such as an EEPROM or a flash ROM. The nonvolatile memory 28 stores a control program and various data according to the usage application of the IC card 20.

  For example, in the nonvolatile memory 28, a program file and a data file are created. A control program and various data are written in each created file. The CPU 25 can implement various processes by executing programs stored in the nonvolatile memory 28 or the ROM 26.

  The transmission / reception unit 29 performs signal processing such as encoding and load modulation on the data transmitted to the terminal device 10. For example, the transmission / reception unit 29 modulates (amplifies) data to be transmitted to the terminal device 10. The transmission / reception unit 29 transmits the data subjected to signal processing to the resonance unit 24.

  The transmission / reception unit 29 demodulates and decodes the signal received by the resonance unit 24. For example, the transmission / reception unit 29 analyzes a signal received by the resonance unit 24. As a result, the transmission / reception unit 29 acquires binary logical data. The transmission / reception unit 29 transmits the analyzed data to the CPU 25 via the bus.

  Note that the CPU 25 sets a communication speed when data is transmitted to the terminal device 10 by the resonance unit 24. The transmission / reception unit 29 controls data to be transmitted to the terminal device 10 at the communication speed set by the CPU 25. In addition, the transmission / reception unit 29 analyzes data received from the terminal device 10 at the communication speed set by the CPU 25.

  The power supply unit 31 generates power based on radio waves (for example, carrier waves) received by the resonance unit 24. Furthermore, the power supply unit 31 generates an operation clock. The power supply unit 31 supplies the generated power and operation clock to each unit of the IC card 20. Each unit of the IC card 20 becomes operable when supplied with power.

  The logic unit 32 is an arithmetic unit that performs arithmetic processing by hardware. For example, the logic unit 32 performs processing such as encryption, decryption, and random number generation based on a command from the terminal device 10. For example, when receiving a mutual authentication command from the terminal device 10, the logic unit 32 generates a random number and transmits the generated random number to the CPU 25.

  In addition, the nonvolatile memory 28 includes a storage unit 28a that stores a list regarding the number of slots in anti-collision. The storage unit 28a stores, for example, a table input from the outside when the file of the IC card 20 is created. Further, the ROM 26 may include a storage unit 28a. In this case, the ROM 26 is incorporated in the IC chip 23 with the table stored. The table will be described later.

  The IC card 20 switches between the issue mode and the operation mode according to the received command. The RAM 27 of the IC card 20 or the nonvolatile memory 28 stores a flag (mode flag) indicating whether the IC card 20 adopts the issue mode or the operation mode. That is, the RAM 27 or the nonvolatile memory 28 functions as a mode storage unit. The IC card 20 switches the mode flag according to the received command.

  The operation mode is a mode used after the primary issue of the IC card 20, for example. When the IC card 20 conforming to ISO / IEC 14443 TypeB operating in the operation mode receives a command such as ATTRIB, the authentication is performed using the Pseudo Unique PICC Identifier (PUPI: card identifier), and the authentication result is normal. Execute command processing. Further, the IC card 20 generates a response based on the result of the command processing, and transmits the generated response to the terminal device 10.

  The issue mode is a mode used at the time of primary issue of the IC card 20, for example. When receiving a command such as ATTRIB, the IC card 20 operating in the issue mode executes command processing without performing authentication using PUPI. In this case, the IC card 20 generates a response based on the result of the command processing, and stores the response in the nonvolatile memory 28.

  The terminal device 10 of the IC card processing system 1 according to the embodiment generates an initial response request command to be transmitted by the resonance unit 16 in order to detect the IC card 20. The terminal device 10 generates an initial response request command as shown in FIG.

  FIG. 3 shows an example of an initial response request command of ISO / IEC 14443 TypeB. As shown by FIG. 3, the initial response request command has “APf”, “AFI”, “PARAM”, and “CRC_B”.

  APf is a parameter used in the initial response request command. APf is, for example, 1-byte data.

  The AFI is an identifier used by the terminal device 10 to specify an application field. AFI is a value expressed by, for example, 8 bits (1 byte). That is, the terminal device 10 sets the AFI value in the 9th to 16th bits from the beginning of the initial response request command.

  PARAM is a parameter of attribute information. PARAM is, for example, 8-bit (1 byte) data. PARAM indicates the type of command and the number of slots used in anti-collision such as a slot marker method or a time slot method.

  CRC_B is a cyclic redundancy check code. CRC_B is a value expressed by 16 bits (2 bytes), for example. CRC_B is a value calculated from data bits in a frame having a command including CRC_B as a character. The IC card 20 determines whether or not the received command is normally transmitted using the CRC_B of the received command.

The PARAM shown in FIG. 3 has a configuration as shown in FIG.
FIG. 4 shows an example of the configuration of the PARAM. As shown in FIG. 4, the PARAM has, for example, 8 bits (consisting of 1 byte) of bits b1 to b8. The PARAM has information such as information indicating the number of slots (Number of slots), REQB / WUPB, and ExATQB. Note that bits b6 to b8 shown in FIG. 4 are reserved future use (RFU) and are not currently used.

  Number of slots is data set in bits b1 to b3. As described above, Number of slots indicates the number of slots used in anti-collision such as the slot marker method or the time slot method.

  REQB / WUPB is data set in bit b4. REQB / WUPB indicates whether the initial response request command is a REQB command (request command) or a WUPB command (wake-up command). ExATQB indicates the support status of Extended ATQB.

  FIG. 5 shows an example of the table 14 a stored in the nonvolatile memory 14 of the terminal device 10. The table shown in FIG. 5 is also stored in the storage unit 28a of the nonvolatile memory 28 of the IC card 20. As shown in FIG. 5, the table includes the number of slots and values corresponding to bits b1 to b3 associated with the number of slots.

  For example, when the number of slots is set to 1, the terminal device 10 sets “000” in bits b1 to b3 of the PARAM of the initial response request command. When the number of slots is set to 2, the terminal device 10 sets “001” to the bits b1 to b3 of the PARAM of the initial response request command. When the number of slots is set to 4, the terminal device 10 sets “010” to the bits b1 to b3 of the PARAM of the initial response request command.

  When the terminal device 10 operates the IC card 20 in the operation mode, the values of b1 to b3 are set to “000”, “001”, “010”, “011” based on the table stored in the storage unit 14a. , And “100”. Thereby, the IC card 20 can be caused to perform anti-collision.

  The terminal device 10 acquires the card identifier of the IC card 20 by transmitting the command shown in FIG. 4 and receiving a response from the IC card 20.

  When the IC card 20 receives an initial response request command in which the values of PARAM b1 to b3 are any one of “000”, “001”, “010”, “011”, and “100”, Switch the mode flag to operational mode. Further, the IC card 20 performs anti-collision based on the number of slots specified by the command, and transmits a response to the terminal device 10.

  In the case of ISO / IEC 14443 TypeB, the response transmitted from the IC card 20 includes “APa”, “PUPI”, “application data”, “protocol information”, and “CRC_B”.

  APa is a parameter used in a response (initial response) to the initial response request command. APa is, for example, 1 byte of data and is “50”.

  PUPI is a pseudo unique IC card (PICC) identifier. The PUPI is used for identifying the IC card 20 from the terminal device 10 side during the collision prevention process (anti-collision). PUPI is, for example, 4-byte data. The PUPI is a value stored in the ROM 26 or the nonvolatile memory 28, but a random number or the like may be substituted.

  The application data is data for informing the terminal device 10 what application is written in the IC card 20. The application data is, for example, 4-byte data.

  The protocol information represents the state of an application protocol supported by the IC card 20. For example, the protocol information includes information indicating a communication speed supported by the IC card 20. The protocol information is, for example, 3 bytes of data.

  CRC_B is a cyclic redundancy check code. CRC_B is a value expressed in 2 bytes, for example. CRC_B is a value calculated from data bits in a frame having a command including CRC_B as a character.

Further, in the case of ISO / IEC 14443 TypeB, the terminal apparatus 10 transmits an ATTRIB command shown in FIG.
As shown in FIG. 6, ATTRIB has “AP”, “Identifier”, “Param 1 to 4”, “Higher Layer Information”, “CRC_B”, and the like as headers indicating that the command is ATTRIB.

  AP is a parameter used in the ATTRIB command. The AP is, for example, 1 byte of data and “1D”.

  Identifier is an identifier used by the terminal device 10 to identify the IC card 20. Identifier is a value expressed in, for example, 4 bytes. The terminal device 10 specifies the IC card 20 to be processed based on the acquired PUPI, and adds the specified PUPI of the IC card 20 as an Identifier.

  Params 1 to 4 are parameters of various attribute information. Each Param is, for example, data of 8 bits (1 byte). Params 1 to 4 have information for performing communication settings such as a communication rate and a frame size.

  Higher Layer Information is an optional field to which arbitrary data can be added.

  CRC_B is a cyclic redundancy check code. CRC_B is a value expressed by 16 bits (2 bytes), for example. CRC_B is a value calculated from data bits in a frame having a command including CRC_B as a character. The IC card 20 determines whether or not the received command is normally transmitted using the CRC_B of the received command.

  Furthermore, the terminal device 10 designates a logical identifier (CID) using the lower 4 bits of Param4. Normally, when the IC card 20 receives ATTRIB, the IC card 20 compares the value of the received ATTRIB Identifier with the value of the PUPI stored in itself. When the value of the ATTRIB Identifier matches the value of the PUPI stored in the IC card 20, the IC card 20 sets communication and transmits a response to the terminal device 10. Thereby, a communication path is established between the terminal device 10 and the IC card 20. Thereafter, the IC card 20 can execute various command processes based on commands transmitted from the terminal device 10.

  In the present invention, when operating the IC card 20 in the issue mode, the terminal device 10 sets “111” in the bits b1 to b3 of the PARAM of the initial response request command shown in FIG.

  When the IC card 20 receives an initial response request command in which the values of PARAM b1 to b3 are “111”, the IC card 20 switches the mode flag to the issue mode. In this case, the IC card 20 generates a response based on the result of the command processing, and stores the response in the nonvolatile memory 28 without transmitting it to the terminal device 10.

  Further, the terminal device 10 transmits an ATTRIB command shown in FIG. When the PARAM bits b1 to b3 are set to “111” in the initial response request command, the terminal device 10 deletes the value of the Identifier or sets it to a fixed value and transmits ATTRIB to the IC card 20. Further, the terminal device 10 designates a logical identifier (CID) by using the lower 4 bits of Param4. In this case, the terminal device 10 thereafter is “0000” indicating that there is no logical identifier, or “RFU”. "1111" is set as the logical identifier.

  When receiving a command such as ATTRIB, the IC card 20 operating in the issue mode executes command processing without performing authentication using PUPI. Thereby, the IC card 20 sets communication, generates a response based on the result of the command processing, and stores the response in the nonvolatile memory 28. Thereby, a communication path is established between the terminal device 10 and the IC card 20. Thereafter, the IC card 20 can execute various command processes based on commands transmitted from the terminal device 10.

  For example, it is assumed that a plurality of IC cards 20 exist within the communicable range of the terminal device 10. Here, when the initial response request command and ATTRIB whose PARAM b1 to b3 values are “111” are transmitted to the plurality of IC cards 20, the terminal device 10 communicates with all the IC cards 20 within the communicable range. Can be established. Thereafter, each IC card 20 can execute various command processes based on a command transmitted from the terminal device 10.

  In this state, the terminal device 10 can write the same data to all the IC cards 20 existing within the communicable range by transmitting a write command to the IC card 20, for example. According to the present embodiment, common data such as applications can be simultaneously written in a plurality of IC cards 20 at the issue stage of the IC card 20.

FIG. 7 shows an example of processing of the IC card 20.
The terminal device 10 repeatedly transmits the generated initial response request command to the communicable range by the resonance unit 16. When the IC card 20 enters the communicable range of the resonance unit 16 of the terminal device 10, the IC card 20 is activated and enters an idle state (step S11). Further, the IC card 20 receives the initial response request command (step S12).

  The CPU 25 of the IC card 20 analyzes the received initial response request command. As a result, the CPU 25 recognizes the values of “APf”, “AFI”, “PARAM”, and “CRC_B” of the initial response request command.

  Based on the recognized “PARAM” value and the table stored in the storage unit 28a, the CPU 25 recognizes whether the initial response request command indicates the issue mode or the operation mode ( Step S13). When performing processing based on the table shown in FIG. 5, the CPU 25 determines that the issue mode is instructed when the value of Number of slot is “111”. The CPU 25 determines that the operation mode is instructed when the value of Number of slot is not “111”.

  When the issue mode is instructed by the initial response request command, the CPU 25 sets a value indicating the issue mode as a mode flag (step S14).

  When the operation mode is instructed by the initial response request command, the CPU 25 sets a value indicating the operation mode as a mode flag (step S15). Further, the CPU 25 transmits a response corresponding to the result of the processing based on the initial response request command to the terminal device 10 (step S16).

  Further, the CPU 25 receives ATTRIB (step S17). The CPU 25 of the IC card 20 analyzes the received ATTRIB. Thus, the CPU 25 recognizes the values of ATTRIB “AP”, “Identifier”, “Param 1 to 4”, “Higher Layer Information”, and “CRC_B”.

  Further, the CPU 25 determines whether the mode flag indicates the issue mode or the operation mode (step S18). When the mode flag indicates the issue mode, the CPU 25 performs processing based on ATTRIB, that is, setting related to communication (step S19). Thereby, a communication path is established between the IC card 20 and the terminal device 10.

  If the mode flag indicates the operation mode, the CPU 25 compares the card identifiers (step S20). That is, the CPU 25 compares the value of “Identifier” of ATTRIB with the value of PUPI held by itself.

  When the value of “Identifier” matches the PUPI, the CPU 25 performs processing based on ATTRIB, that is, setting related to communication (step S21). Thereby, a communication path is established between the IC card 20 and the terminal device 10. Further, the CPU 25 generates a response based on the processing result, and transmits the generated response to the terminal device 10 (step S22). If the value of “Identifier” does not match the PUPI, the CPU 25 maintains a standby state without performing processing.

  The terminal device 10 transmits various commands to the IC card 20 when the communication path with the IC card 20 is established as described above. Thereby, the IC card 20 executes a command process corresponding to the received command (step S23).

  According to such a configuration, the terminal device 10 can simultaneously write data to the plurality of IC cards 20 existing within the communicable range. When the IC card 20 operates in the issue mode, the response is not transmitted to the terminal device 10 but is stored in the nonvolatile memory 28 or the like. Therefore, the terminal device 10 can process a plurality of IC cards 20 without performing anti-collision processing.

  Thereby, it is possible to reduce the time required for the process of writing similar data to a plurality of IC cards. As a result, it is possible to provide a portable electronic device that can perform non-contact communication faster and a method for controlling the portable electronic device.

  A response may be transmitted after Step S14 or Step S19. In this procedure, it is necessary to wait for the time to process the initial response request command and ATTRIB. However, if there is a response, a collision occurs and data is not known, but the timing at which the terminal device 10 transmits the next command can be known.

  In the above-described embodiment, the terminal device 10 has been described as a configuration in which the mode of the IC card 20 is switched by setting a bit value related to the number of PARAM slots of the initial response request command. However, the configuration is not limited to this configuration. For example, the terminal device 10 may be configured to add information indicating the issue mode or the operation mode to the PARAM bits b6 to b8 of the initial response request command.

  Further, the terminal device 10 may be configured to add information indicating the issue mode or the operation mode to the ATTRIB. In this case, responses to the initial response request command are transmitted from the plurality of IC cards 20 to the terminal device 10. For this reason, although a collision occurs, the terminal device 10 can shift the IC card 20 to the issue mode by transmitting ATTRIB continuously. As a result, the IC card 20 enters a state in which authentication using PUPI is not performed. For this reason, the terminal device 10 can establish a communication path with each IC card 20.

  In the above-described embodiment, the IC card 20 has been described as a configuration that switches between the issuance mode and the operation mode according to the command transmitted from the terminal device 10, but is not limited to this configuration. For example, the IC card 20 may be configured to be set in the issue mode in the initial state. For example, the IC card 20 is set to the issue mode when a file is created in the nonvolatile memory 28.

  In this case, the terminal device 10 can establish a communication path with the plurality of IC cards 20 without performing anti-collision by transmitting a normal initial response request command and ATTRIB to the IC card 20. Further, the terminal device 10 can simultaneously write data to a plurality of IC cards 20 by transmitting a write command or the like to the IC card 20.

  Further, in this case, when the IC card 20 receives a predetermined command or a command to which predetermined information is added, the IC card 20 rewrites the mode flag so as to shift from the issue mode to the operation mode. For example, the IC card 20 rewrites the mode flag when receiving a command for switching the mode, or a command for instructing to shift to the operation mode as shown in FIGS. In such a case, the IC card 20 can maintain security by rewriting the mode flag with information indicating the operation mode in a state where the rewriting is impossible.

  In the above-described embodiment, the IC card 20 has been described as storing the response in the nonvolatile memory 28 without returning the response to the terminal device 10 when operating in the issue mode. In this case, the terminal device 10 can acquire the processing result of the command processing executed by the IC card 20 by transmitting a command for reading the response stored in the nonvolatile memory 28 to the IC card 20. . Thereby, the terminal device 10 can specify the IC card 20 in which a write error or the like has occurred.

  It should be noted that the functions described in the above embodiments are not limited to being configured using hardware, but can be realized by causing a computer to read a program describing each function using software. Each function may be configured by appropriately selecting either software or hardware.

Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.
The claims at the beginning of the filing of this application are appended below.
[C1]
A portable electronic device that performs non-contact communication with an external device,
A receiving unit for receiving a command transmitted from the external device;
A first command processing unit that determines whether or not to execute based on the command received by the receiving unit, and processes the command when it is determined to be possible;
A second command processing unit for processing the command received by the receiving unit;
A storage unit for storing a flag indicating which of the first command processing unit and the second command processing unit is used for command processing;
Based on the flag stored by the storage unit, a control unit that controls the command processing to be executed by either the first command processing unit or the second command processing unit;
A portable electronic device comprising:
[C2]
The portable electronic device according to C1, further comprising a processing result storage unit that stores a response as a result of the command processing executed by the second command processing unit.
[C3]
The second command processing unit according to C2, further comprising: a transmission unit that transmits the response stored in the processing result storage unit to the external device when a predetermined command is received by the reception unit. Portable electronic device.
[C4]
The portable electronic device according to C1, further comprising a transmission unit that transmits a response as a result of the command processing executed by the first command processing unit to the external device.
[C5]
The portable electronic device according to C1, wherein the storage unit rewrites the flag based on the command received by the receiving unit.
[C6]
The portable electronic device according to C5, wherein the storage unit rewrites the flag in a non-rewritable state based on the command received by the receiving unit.
[C7]
An IC module comprising the above-mentioned parts;
A main body on which the IC module is disposed;
The portable electronic device according to C1, comprising:
[C8]
A control method used in a portable electronic device that performs non-contact communication with an external device,
Receiving a command transmitted from the external device;
Whether to execute based on the received command and whether to execute the command when it is determined to be processed or whether to process the command without determining whether to execute based on the received command Based on a flag stored in advance by itself,
Control method of portable electronic device.

  DESCRIPTION OF SYMBOLS 1 ... IC card processing system, 10 ... Terminal device, 12 ... ROM, 13 ... RAM, 14 ... Nonvolatile memory, 14a ... Memory | storage part, 15 ... Transmission / reception part, 16 ... Resonance part, 17 ... Logic part, 18 ... Host interface , 19 ... Power supply unit, 20 ... IC card, 21 ... Main body, 22 ... IC module, 23 ... IC chip, 24 ... Resonance unit, 25 ... CPU, 26 ... ROM, 27 ... RAM, 28 ... Non-volatile memory, 28a ... Storage unit, 29... Transmission / reception unit, 31.

Claims (6)

Non-contact portable electronic device that performs non-contact communication with an external device, executes processing based on a command from the external device, and transmits a processing result to the external device as a response,
A mode storage unit for storing a mode flag indicating whether the state of the non-contact portable electronic device is an issue mode or an operation mode ;
A receiving unit for receiving a command transmitted in a non-contact manner from the external device;
A command processing unit that executes processing based on the command received by the receiving unit;
A response generation unit that generates a response as a result of processing by the command processing unit;
A transmission unit that transmits the response generated by the response generation unit to the external device in a contactless manner;
When the mode flag stored by the mode storage unit when executing a predetermined command is the active mode, transmits the response generated by the response generating unit to the external device by the transmitting unit, the When the same command as a predetermined command is executed , the response generated by the response generation unit is not transmitted to the external device when the mode flag stored in the mode storage unit is in the issue mode. A control unit to control;
A non-contact portable electronic device comprising: When the mode flag stored by the mode storage unit is issued mode, contactless portable according to claim 1, the processing result storage unit further comprising storing the response generated by the response generating unit Possible electronic device. The mode storage unit, contactless portable electronic device according to claim 1 or 2 are set to issue mode in the initial state. The mode storage unit, contactless portable electronic device according to any one of claims 1 to 3 to switch the operation mode to the mode flag from the issuing mode in response to the command transmitted from the external device. The contactless portable electronic device according to claim 4 , wherein the mode storage unit switches the mode flag in accordance with an initial response request command transmitted from the external device. The contactless portable electronic device according to claim 4 , wherein the mode storage unit switches the mode flag in accordance with an ATTRIB command transmitted from the external device.