JP6046068B2 - Portable electronic device and method for controlling portable electronic device - Google Patents

Description

  Embodiments described herein relate generally to a portable electronic device and a method for controlling the 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 the international standard ISO / IEC7816. 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.

  When receiving a command from a processing device that processes the IC card, the IC card executes an application in accordance with the received command. Thereby, the IC card can realize various functions.

JP 2009-27774 A

  When data is added to the IC card, in the conventional command, the IC card determines whether or not writing based on the received command is performed using “life cycle”, “EF attribute information”, or the like.

  For example, when date information older than date information attached to data already recorded on the IC card is written to the IC card as a time stamp, it is desirable that the IC card be unable to write. However, the IC card cannot determine the legitimacy of such data from the “life cycle” and “EF attribute information”. In such a case, it is necessary to determine whether or not writing is possible at the terminal.

  In order to confirm the validity of the command in the terminal device, the terminal device needs to read all data and compare the date information of the command transmitted to the IC card with the date information of the read data. For this reason, there are problems that the number of command issuances and processing time increase, and the processing by the processing terminal becomes complicated.

  Therefore, an object of the present invention is to provide a portable electronic device that can determine the validity of a command by a simpler process, and a method for controlling the portable electronic device.

The portable electronic device according to one embodiment includes a memory that stores entry / exit information indicating entry / exit, a country code indicating the country, and first date information as entry / exit information, and the entry / exit information transmitted from an external device. A receiving unit that receives a command for appending to the memory; an analysis unit that analyzes the command received by the receiving unit to obtain second date information; and the second that is acquired by the analyzing unit. wherein the date information, a comparison unit for comparing the first date information of latest the immigration information stored by said memory, if newer the second date information of the first date information run the additional writing process of appending the immigration information to the memory on the basis of the command to generate a response to the command, the second date information of the first date information A command processing unit for generating a response containing information indicating an error without executing the additional write process in response to said command when old, a transmission unit that transmits the response generated by the command processing unit to the external device Are provided.

FIG. 1 is a diagram for explaining a configuration example of an IC card processing system according to an embodiment. FIG. 2 is a diagram for explaining a configuration example of an IC card according to an embodiment. FIG. 3 is a diagram for describing an example of record data according to an embodiment. FIG. 4 is a diagram for explaining an example of processing of the IC card processing system according to the embodiment. FIG. 5 is a diagram for explaining an example of processing of the IC card processing system according to the embodiment. FIG. 6 is a diagram for explaining an example of processing of the IC card processing system according to the embodiment. FIG. 7 is a diagram for explaining an example of processing of the IC card processing system according to the embodiment. FIG. 8 is a diagram for explaining an example of processing of the IC card processing system according to the embodiment.

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

  The portable electronic device (IC card) 20 and the processing device (terminal device) 10 for processing the IC card according to the present embodiment have, for example, functions of contact communication and / or non-contact communication. 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.

  The terminal device 10 includes a CPU 11, a ROM 12, a RAM 13, a nonvolatile memory 14, a card reader / writer 15, an operation unit 17, a display 18, and a power supply unit 19. The CPU 11, the ROM 12, the RAM 13, the nonvolatile memory 14, the card reader / writer 15, the operation unit 17, and the display 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 card reader / writer 15.

  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 card reader / writer 15. 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 card reader / writer 15 is an interface device for communicating with the IC card 20. The card reader / writer 15 transmits / receives data to / from the IC card 20 by contact communication or non-contact communication.

  When used as an interface for contact communication, the card reader / writer 15 includes a slot in which the IC card 20 is mounted and a plurality of contact terminals connected to a contact pattern included in the IC card 20.

  When the IC card 20 is mounted in the slot, the plurality of contact terminals of the card reader / writer 15 are connected to the contact pattern of the IC card 20. Thereby, the terminal device 10 and the IC card 20 are electrically connected. The card reader / writer 15 performs power supply, clock supply, reset signal input, data transmission / reception, and the like to the IC card 20 installed in the slot.

  When used as an interface for non-contact communication, the card reader / writer 15 includes a signal processing unit that performs signal processing on data to be transmitted and received, and an antenna having a predetermined resonance frequency.

  For example, the card reader / writer 15 performs signal processing such as encoding, decoding, modulation, and demodulation on data to be transmitted and received by a signal processing unit. The card reader / writer 15 supplies the encoded and modulated data to the antenna. The antenna generates a magnetic field according to the supplied data. Thereby, the terminal device 10 can transmit data to the IC card 20 existing in the communicable range in a non-contact manner.

  Further, the antenna of the card reader / writer 15 detects a magnetic field and generates a signal according to the detected magnetic field. Thereby, the card reader / writer 15 can receive a signal in a non-contact manner. The signal processing unit demodulates and decodes the signal received by the antenna. Thereby, the terminal device 10 can acquire the original data transmitted from the IC card 20.

  The operation unit 17 includes, for example, operation keys and generates an operation signal based on an operation input by the operator. The operation unit 17 inputs the generated operation signal to the CPU. Thereby, CPU11 can matter about processing based on operation inputted by an operator.

  The display 18 displays various information based on signals for displaying video input from the CPU 11 or a display processing module such as a graphic controller (not shown).

  The power supply unit 19 supplies power to each unit of the terminal device 10. For example, the power supply unit 19 receives power from a commercial power supply, converts the power into a predetermined voltage, and supplies the voltage to each unit of the terminal device 10.

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 communication unit 24. The IC chip 23 and the communication unit 24 are formed in the IC module 22 while being 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 communication unit 24 is disposed can be installed.

  The IC chip 23 includes a communication unit 24, a CPU 25, a ROM 26, a RAM 27, a nonvolatile memory 28, a power supply unit 31, a logic unit 32, and the like. The communication unit 24, the CPU 25, the ROM 26, the RAM 27, the nonvolatile memory 28, the power supply unit 31, and the logic unit 32 are connected to each other via a bus.

  The communication unit 24 is an interface for communicating with the card reader / writer 15 of the terminal device (external device) 10. The communication unit 24 transmits / receives data to / from the terminal device 10 by contact communication or non-contact communication.

  When used as an interface for contact communication, the communication unit 24 includes a contact pattern connected to a contact terminal of the card reader / writer 15. The contact pattern is a contact terminal formed on the surface of the IC module 22 with a conductive metal or the like. That is, the contact pattern is formed so as to be in contact with the terminal device 10.

  The contact pattern is formed by dividing a surface formed of metal into a plurality of areas. Each divided area functions as a terminal. The communication unit 24 can transmit / receive data to / from the card reader / writer 15 via the contact pattern.

  When used as an interface for non-contact communication, the communication unit 24 includes a signal processing unit and an antenna.

  The signal processing unit performs signal processing such as encoding and load modulation on data to be transmitted to the terminal device 10. For example, the signal processing unit modulates (amplifies) data to be transmitted to the terminal device 10. The signal processing unit supplies the signal-processed data to the antenna.

  The antenna is constituted by, for example, a metal wire disposed in a predetermined shape in the IC module 22. The IC card 20 generates a magnetic field by an antenna according to 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 an induced current generated in the antenna by electromagnetic induction.

  For example, the signal processing unit demodulates and decodes the induced current generated in the antenna. For example, the signal processing unit analyzes a signal received by the antenna. As a result, the communication unit 24 acquires binary logical data. The communication unit 24 transmits the analyzed data to the CPU 25 via the bus.

  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 communication unit 24. The RAM 27 temporarily stores data to be transmitted to the terminal device 10 via the communication 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 power supply unit 31 supplies power to each unit of the terminal device 10. When the IC card 20 has a configuration for performing contact communication, the power supply unit 31 supplies power supplied from the card reader / writer 15 to each unit of the IC card 20 via the contact pattern of the communication unit 24.

  In addition, when the IC card 20 has a configuration for performing contactless communication, power is generated based on radio waves transmitted from the antenna of the card reader / writer 15, particularly carrier waves. 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.

  Further, the nonvolatile memory 28 includes a storage unit 28a that stores data in a record structure. The storage unit 28a stores, for example, data shown in FIG. For example, when the IC card 20 is used as an IC passport, the storage unit 28a stores immigration information in a record structure as shown in FIG.

  There are various types of record structures, such as a fixed-length sequential organization structure, a variable-length sequential organization structure, or a fixed-length cyclic sequential organization structure. The data stored in the record structure has at least a record number (record identifier) and a data body (record data).

  In the example illustrated in FIG. 3, the storage unit 28 a stores data having a Tag Length Value (TLV) structure as record data. That is, the storage unit 28a stores a record number, a data type (Tag), a data length (Length), and a data value (Value).

  Tag of the TLV data object is information for causing the CPU 25 of the IC card 20 to identify the TLV data object. Length is information indicating the value data length of the TLV data object. Value is the data body of the TLV data object.

  When storing the entry / exit information, the storage unit 28a stores information indicating entry / exit (entry / exit information), a country code (country symbol), a location code, and a registration date (date information) as Value.

  The entry / exit information is 1-byte data. For example, when the logical value of the entry / exit information is “0”, the entry / exit information indicates entry. When the logical value of the entry / exit information is “1”, the entry / exit information indicates the departure from the country.

  The country symbol is 3-byte data. The country symbol indicates, for example, a country code defined by the international standard ISO / IEC3166-2.

  The location code is 3-byte data. The location code is, for example, information indicating a location such as “Narita” or “Haneda” coded for each country. In the present embodiment, no specific value is shown for the location code.

  The date information is 8-byte data. The date information is a time stamp indicating the time when the immigration information is written in the nonvolatile memory 28 of the IC card 20. The date information is written, for example, in the format of “yyyymmdd”. That is, the date information includes information indicating a 4-byte year, information indicating a 2-byte month, and information indicating a 2-byte day.

  According to the example shown in FIG. 3, the record with the record number “01” includes “1” = exit as the entry / exit information, “392” = Japan as the country symbol, “xxx” as the location code, and “xxx” as the date information. 20009222 "is recorded.

  In addition, the terminal device 10 includes a table in which entry / exit information values are associated with “entrance” and “exit” in advance. In addition, the terminal device 10 includes a table in which country symbol values are associated with information indicating country names. The terminal device 10 includes a table in which a location code value is associated with information indicating a location. Furthermore, the terminal device 10 is previously provided with a method (or table) for specifying the time when the immigration information is recorded based on the value of the date information.

  When the terminal device 10 reads a record from the IC card 20, the terminal device 10 refers to each table stored in advance based on the value of each read information to obtain the entry / exit information, country name, place name, and date information. Can be identified.

  In addition, the nonvolatile memory 28 includes a storage unit 28b that stores the CVCA certificate. The Card Verifiable Certification Authority (CVCA) certificate includes information necessary for the IC card 20 to be used as an IC passport. The CVCA certificate includes at least information indicating the issue date of the CVCA certificate.

  Furthermore, the non-volatile memory 28 includes a storage unit 28 c that stores the latest processing date of the IC card 20. When the IC card 20 receives a command from the terminal device 10, the storage unit 28c stores date information included in the received command. Thereby, the memory | storage part 28c can memorize | store the information (last process date) which shows the newest (most recent) date by which the IC card 20 was processed. The received command may be any command as long as it includes date information.

  FIG. 4 shows an example of a command transmitted from the terminal device 10 to the IC card 20. The command shown in FIG. 4 includes “CLA” 301, “INS” 302, “P1” 303, “P2” 304, “Lc” 305, “Data” 306, and “Le” 307.

  “CLA” 301 is a class byte indicating the stratification of the command. “INS” 302 is an instruction byte indicating the type of command. “P1” 303 and “P2” 304 are parameter bytes indicating parameters according to “INS” 302.

  “Lc” 305 is a length field for coding number Nc indicating the data length (number of bytes) of “Data” 306. “Data” 306 is a command data field indicating the data body of the command. “Le” 307 is a length field for coding number Ne indicating the data length of the response to the command.

  Further, “Data” 306 includes a plurality of TLV data objects as shown in FIG.

  FIG. 5 shows data included in “Data” 306. As shown in FIG. 5, “Data” 306 includes Tag 401, Len 402, comparison target 403, Tag 404, Len 405, offset 406, Tag 407, Len 408, date information 409, Tag 410, Len 411, and additional data 412. Hereinafter, date information attached to data already stored in the IC card 20 will be described as first date information, and date information included in a command transmitted from the terminal device 10 will be described as second date information.

  That is, the “Data” 306 includes a TLV data object including the comparison target 403, a TLV data object including the extraction offset 406, a TLV data object including the second date information 409, and a TLV data object including the additional data 412. When the comparison object 403, the offset 406, the date information 409, and the additional data 412 have fixed lengths, the “Data” 306 may include only the value of the TLV data object.

  The comparison target 403 is information indicating the type of first date information stored in the IC card 20. For example, in the IC card processing system 1 of the present embodiment, for example, date information included in the latest record data among a plurality of record data stored in the storage unit 28a, and CVCA certification stored in the storage unit 28b. The issue date of the document or the final processing date of the IC card 20 stored in the storage unit 28c is used as the first date information.

  The offset 406 is information indicating the position of data to be compared with the date information (second date information) 409 of this command. The offset 406 is information added to the command when the date information included in the latest record data is designated as the first date information in the comparison target. The offset 406 indicates the number of bytes from the beginning of the record or the number of bytes from the beginning of the value of the record.

  The date information 409 is second date information that is compared with the first date information stored in the IC card 20.

  The additional write data 412 is a data body that is additionally written to the IC card 20 by the command.

  Note that the terminal device 10 and the IC card 20 generate and analyze the comparison target 403 based on the table shown in FIG.

  For example, when a CVCA certificate issuance date is designated as a comparison target, the terminal device 10 sets “0” as the comparison target 403. When the comparison target 403 of the “Data” 306 of the received command is “0”, the IC card 20 recognizes that the issuance date of the CVCA certificate is designated as the comparison target. In this case, the IC card 20 reads the issuance date (first date information) of the CVCA certificate stored in the storage unit 28b and compares it with the date information (second date information) 409 of the received command.

  For example, when specifying date information included in the latest record data as a comparison target, the terminal device 10 sets “1” as the comparison target 403. When the comparison target 403 of the “Data” 306 of the received command is “1”, the IC card 20 recognizes that the date information included in the latest record data is specified as the comparison target. In this case, the IC card 20 reads the date information (first date information) of the latest record data from the record data stored in the storage unit 28a, and receives the date information (second date information) of the received command. ) Compare with 409.

  In this case, the IC card 20 reads data having a predetermined length from the position indicated by the offset 406 of the latest record data as the first date information.

  For example, when the final processing date is designated as the comparison target, the terminal device 10 sets “2” as the comparison target 403. When the comparison target 403 of “Data” 306 of the received command is “2”, the IC card 20 recognizes that the final processing date is designated as the comparison target. In this case, the IC card 20 reads the last processing date (first date information) stored in the storage unit 28c and compares it with the date information (second date information) 409 of the received command.

  When the second date information is newer than the first date information, the IC card 20 determines that the received command is a valid command. In this case, the IC card 20 performs command processing according to the received command, and transmits a response indicating normal termination to the terminal device 10.

  In addition, when the second date information is older than the first date information, the IC card 20 determines that the received command is an invalid command. In this case, the IC card 20 transmits a response indicating an error end to the terminal device 10 without performing command processing according to the received command.

FIG. 7 shows an example of commands received by the IC card 20.
For example, the commands shown in FIG. 7 include “CLA”, “INS”, “P1”, “P2”, “Lc”, “Data”, and “Le”. The “Data” includes a comparison target 701, an offset 702, date information 703, and additional data 704. In the example illustrated in FIG. 7, the comparison target 701 is “1”, the offset 702 is “8”, and the date information 703 is “2013003”.

  When receiving the command shown in FIG. 7, the IC card 20 recognizes that the comparison target is the date included in the latest record data. Further, the IC card 20 refers to the latest record data among the plurality of record data stored in the storage unit 28a, and uses the data at the position indicated by the offset 702 of the referenced record data as the first date information. read out.

  Furthermore, the IC card 20 compares the date information (second date information) 703 of the received command with the read first date information. If the second date information is newer than the first date information, the IC card 20 determines that the received command is a valid command, executes command processing, and sends a response indicating normal termination to the terminal Transmit to device 10. Further, when the second date information is older than the first date information, the IC card 20 determines that the received command is an illegal command and transmits a response indicating an error end to the terminal device 10. To do.

FIG. 8 shows an example of processing of the IC card 20.
First, the terminal device 10 determines comparison target data and generates a command as shown in FIGS. The terminal device 10 transmits the generated command to the IC card 20.

  The IC card 20 receives the command transmitted from the terminal device 10 (step S11). Next, the IC card 20 analyzes the received command (step S12). Thereby, the IC card 20 recognizes the comparison target, offset, and additional data specified by the command. Further, the IC card 20 specifies second date information (step S13).

  Next, the IC card 20 confirms the recognized comparison target (step S14). When the comparison target is the issue date of the CVCA certificate, the IC card 20 reads the issue date (first date information) of the CVCA certificate stored in the storage unit 28b (step S15).

  When the comparison target is date information included in the latest record data, the IC card 20 uses the date information (first date information) of the latest record data among the record data stored in the storage unit 28a. Is read (step S16).

  Further, when the comparison target is the final processing date, the IC card 20 reads the final processing date (first date information) stored in the storage unit 28c (step S17).

  The IC card 20 compares the read first date information with the second date information recognized from the received command (step S18). Thereby, the IC card 20 determines whether or not the second date information is newer than the first date information (step S19).

  If the second date information is newer than the first date information, the IC card 20 executes command processing according to the received command (step S20). For example, when the received command is a command for instructing additional data as shown in FIG. 7, the IC card 20 additionally writes additional data of the received command in the storage unit 28 a of the nonvolatile memory 28.

  Furthermore, the IC card 20 updates the final processing date based on the date information included in the received command (step S21). That is, the IC card 20 overwrites the date information included in the received command on the last processing date stored in the storage unit 28c of the nonvolatile memory 28.

  The IC card 20 generates a response indicating normal termination based on the processing result of the executed command processing (step S22), transmits the generated response to the terminal device 10 (step S23), and ends the processing.

  If the second date information is older than the first date information, the IC card 20 generates a response indicating an error end without performing the command processing (step S24), and the generated response is sent to the terminal device 10. (Step S23), and the process ends.

  According to this configuration, the IC card 20 can determine the validity of the received command based on the second date information included in the received command and the first date information held by itself. The IC card 20 executes command processing when the validity of the received command is confirmed. Thereby, the process in the terminal device 10 can be simplified and the validity of the command can be confirmed. For this reason, it is possible to reduce the number of times the command is issued and the processing time.

  As a result, it is possible to provide a portable electronic device that can determine the validity of a command by a simpler process, and a method for controlling the portable electronic device.

  In the above embodiment, the immigration information has been described as a configuration having immigration information, a country symbol, a location code, and date information, but is not limited to this configuration. The immigration information may be any information. Furthermore, the record data stored in the record structure is not limited to the immigration information, and the above-described embodiment can be implemented by any data.

  In the above-described embodiment, the command transmitted from the terminal device 10 to the IC card 20 has been described as a configuration including a comparison target, an offset, date information, and additional data, but is not limited to this configuration. When the comparison target and the offset are preset in the IC card 20, the terminal device 10 may transmit a command including at least date information to the IC card 20. In this case, the IC card 20 can confirm the validity of the command based on the date information (second date information) of the received command and the first date information stored by itself. Also, the type of command is not limited to the postscript command, and any command may be used as long as it includes at least date information.

  In the above embodiment, the IC card 20 has been described as a configuration for confirming the validity of the received command based on whether or not the second date information is newer than the first date information. It is not limited to. The IC card 20 is configured to confirm the validity of the received command based on whether or not the date indicated by the second date information has passed a predetermined time from the date indicated by the first date information. May be. Thereby, the IC card 20 can restrict the next writing for a certain period after writing.

  Furthermore, when receiving a command, the IC card 20 may be configured to count the number of write processes executed by the IC card 20 within a predetermined period by referring to past record data. . In this case, the IC card 20 confirms the number of record data stored during the past predetermined period from the date information of the received command, and if the confirmed number is equal to or greater than a predetermined value set in advance, It is determined that the executed command is invalid. Thereby, the IC card 20 can restrict the writing of a predetermined number of times or more within a predetermined period.

  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.

  DESCRIPTION OF SYMBOLS 1 ... IC card processing system, 10 ... Terminal device, 11 ... CPU, 12 ... ROM, 13 ... RAM, 14 ... Non-volatile memory, 15 ... Card reader / writer, 17 ... Operation part, 18 ... Display, 19 ... Power supply part, DESCRIPTION OF SYMBOLS 20 ... IC card, 21 ... Main body, 22 ... IC module, 23 ... IC chip, 24 ... Communication part, 25 ... CPU, 26 ... ROM, 27 ... RAM, 28 ... Non-volatile memory, 28a thru | or 28c ... Memory | storage part, 31 …Power supply part.

Claims (4)

A memory for storing entry / exit information indicating entry / exit, country code indicating country, and first date information as entry / exit information;
A receiving unit for receiving a command for adding the immigration information transmitted from an external device to the memory;
Analyzing the command received by the receiving unit and obtaining second date information;
A comparison unit that compares the second date information acquired by the analysis unit with the first date information of the latest immigration information stored in the memory;
Run the additional writing process of the second date information to append the immigration information to the memory based on the command newer than the first date information to generate a response to the command, the second A command processing unit that generates a response including information indicating an error without performing an additional recording process according to the command when the date information of the command is older than the first date information ;
A transmission unit that transmits the response generated by the command processing unit to the external device;
A portable electronic device comprising:   2. The portable electronic device according to claim 1, wherein the command processing unit executes the write-once process when the second date information has passed a predetermined period from the first date information, and generates a response to the command. apparatus. An IC module comprising the above-mentioned parts;
A main body on which the IC module is disposed;
The portable electronic device according to claim 1, comprising: A method for controlling the portable electronic device used in a portable electronic device comprising a memory, comprising:
Immigration information indicating entry or departure, country code indicating country, and first date information are stored in advance in the memory as entry / exit information,
Receiving a command for adding the immigration information transmitted from an external device to the memory;
Analyzing the received command to obtain second date information;
Comparing the acquired second date information with the first date information of the latest immigration information stored in the memory;
Run the additional writing process of the second date information to append the immigration information to the memory based on the command newer than the first date information to generate a response to the command,
When the second date information is older than the first date information, a response including information indicating an error is generated without performing an additional recording process according to the command,
Sending the generated response to the external device;
Control method of portable electronic device.

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