JP2011198106A - Portable electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electronic device having excellent data-read-processing efficiency.SOLUTION: The portable electronic device includes a storage for storing reference data and relevant data related to the reference data, a transmitter/receiver for transmitting and receiving data, and a controller for controlling so as to transmit the reference data and the relevant data based on reception of a read-command.

Description

  The present invention relates to a portable electronic device called an IC card, which includes an IC (integrated circuit) module having a control element such as a nonvolatile memory and a CPU.

  In recent years, IC cards (contact type and non-contact type) having excellent safety have been widely used. Such an IC card includes a non-volatile memory that can retain data even when power supply is cut off, a communication I / F that can communicate with a reader / writer, a control element such as a CPU that executes various operations, It has a ROM for storing operation programs and the like, and a RAM for temporarily storing data.

  IC cards are used not only for settlement of credit cards, commuter passes, and other commercial transactions, but also in various fields as ID cards for employee cards, membership cards, insurance cards, and the like. Compared to the conventional magnetic card, the IC card has an IC having a CPU, ROM, RAM, nonvolatile memory, etc., so that various functions can be realized and it is difficult to forge. This is also due to the significant improvement in

  The IC card operates based on a command transmitted from the reader / writer. For example, when receiving a command transmitted from the reader / writer, the IC card executes processing based on the received command. For example, when the reader / writer transmits a read command to the IC card, the IC card receives the read command, reads data based on the read command, and returns the read data to the reader / writer. When the reader / writer that has received the read data further needs data related to the received read data, the reader / writer further transmits a read command to the IC card. The IC card receives the read command and receives the read command. Based on this, the data is read, and the read data is returned to the reader / writer. As described above, the reader / writer repeatedly transmits a command to the IC card and receives necessary data from the IC card.

  For example, a technique is disclosed in which a terminal first reads information of a table configuration called AFL (Application File Locator), and executes read commands one after another based on a storage destination of information to be read next listed in the AFL. (See Patent Document 1)

JP 2006-107403 A (paragraph numbers 0032, 0033, etc.)

  As described above, the reader / writer repeatedly transmits a command to the IC card and receives necessary data from the IC card. That is, the reader / writer transmits a read command a plurality of times when reading a plurality of data from the IC card. There is a desire to improve data processing efficiency for such data read processing.

  An object of the present invention is to provide a portable electronic device having excellent data read processing efficiency.

  A portable electronic device according to an embodiment of the present invention includes a storage unit that stores reference data and related data related to the reference data, a transmission / reception unit that transmits and receives data, and a reference command based on reception of a read command. And control means for controlling to transmit the related data.

  According to the present invention, it is possible to provide a portable electronic device having excellent data read processing efficiency.

1 is a block diagram showing a schematic configuration of an IC card system according to an embodiment of the present invention. It is a block diagram which shows schematic structure of the card reader / writer of an IC card system. It is a block diagram which shows schematic structure of the IC card of an IC card system. It is a figure which shows an example of the data memorize | stored in the IC card. It is a figure which shows the 1st example of the data reply process based on a read command. It is a figure which shows the 2nd example of the data reply process based on a read command.

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

  FIG. 1 is a block diagram showing a schematic configuration of an IC card system (also called a smart card system) according to an embodiment of the present invention. As shown in FIG. 1, the IC card system includes a terminal 1 (communication device) and an IC card 2 (portable electronic device). The terminal 1 includes a main body (upper apparatus) 11, a display 12, a keyboard 13, and a card reader / writer 14. The terminal 1 is configured to be communicable with the IC card 2, and the terminal 1 transmits data to the IC card 2 and receives data from the IC card 2.

  For example, the main body 11 can selectively execute a plurality of communication methods and a plurality of applications. The display 12 displays a result of communication with the IC card 2 and an authentication result. The keyboard 13 inputs characters and numbers to the main body 11. The card reader / writer 14 communicates with the IC card 2.

  The IC card 2 may be any of a contact type card, a non-contact type card, and a combination type card that supports both a non-contact type and a contact type.

  FIG. 2 is a block diagram showing a schematic configuration of the card reader / writer 14 according to one embodiment of the present invention. As shown in FIG. 2, the card reader / writer 14 includes a communication I / F 142, a CPU 143, a data memory (nonvolatile memory) 144, a RAM 145, and a ROM 146. The CPU 143 functions as a communication control unit, for example, and controls transmission of information including commands to the IC card 2, detects a response from the IC card 2, and further based on the response from the IC card 2 2 to control transmission of information including a command. Further, the data memory 144 stores a Block Number that is set, maintained, or updated.

  FIG. 3 is a block diagram showing a schematic configuration of an IC card according to an embodiment of the present invention. As shown in FIG. 3, the IC card 2 is, for example, a plastic card and includes an IC chip 20 (IC module). The IC chip 20 includes a communication I / F 201, a CPU 204, a data memory (EEPROM, FRAM, FLASH, etc.). Non-volatile memory) 205, RAM 206, and ROM 207. Note that the IC card 2 as described above will be described as an example of a portable electronic device, but the present invention is not limited to this. For example, the portable electronic device may be a SIM-shaped IC card.

  The RAM 206 functions as a working memory. The ROM 207 holds an IC card program executed by the CPU 204. The CPU 204 functions as a control unit and operates based on an IC card program or the like stored in the ROM 207. The CPU 204 reads data stored in the data memory 205 or the RAM 206, writes data to the data memory 205 or the RAM 206, and further receives a command (via a communication I / F 201 as a transmission / reception means). The command transmitted from the terminal 1 is interpreted and executed, and a response of the command execution result is controlled to the terminal 1 via the communication I / F 201 as a transmission / reception means.

  Next, an example of command processing (batch reply processing) will be described with reference to FIG.

  For example, assume that the data memory 205 of the IC card 2 stores data as shown in FIG. That is, the data memory 205 stores the reference data 400 registered in the file 410, and the reference data 400 is based on the file identifier (file ID) and the record number (record ID), and the data 401 of the file 411 and the data of the file 412. 402, data 403 of the file 413 is designated. In other words, the data 401, 402, and 402 are related data related to the reference data 400. The reference data 400 may have a data structure that designates the data 401 of the file 411, the data 402 of the file 412, and the data 403 of the file 413 by a file identifier (file ID) and an offset. Alternatively, the reference data 400 may have a data structure that designates the data 401 of the file 411, the data 402 of the file 412, and the data 403 of the file 413 by a file identifier (file ID) and a tag (Tag).

  For example, when communication between the terminal 1 and the IC card 2 is started and the IC card 2 is activated, the card reader / writer 14 sends a SELECT command for selecting a target application via the communication I / F 142 to the IC. The data is transmitted to the card 2 (ST101), and the target application is selected. The IC card 2 (CPU 204) receives the SELECT command via the communication I / F 201, activates the target application based on the SELECT command, and gives a normal status to the card reader / writer 14 via the communication I / F 201. Reply (ST102).

  Thereafter, for example, the card reader / writer 14 transmits a read command RC400 for reading the reference data 400 to the IC card 2 (ST103). The IC card 2 (CPU 204) receives the read command RC400, and returns response data including the reference data 400, the file 401 data 401, the file 412 data 402, and the file 413 data 403 based on the read command RC400. (ST104). That is, the IC card 2 (CPU 204) responds to the reception of the read command RC400 by referring to the reference data 400, the data 401 of the file 411 designated by the reference data 400, the data 402 of the file 412, and the data 403 of the file 413. And response data including the combined data can be returned. As described above, in response to the reception of the read command RC 400, the process of returning the reference data 400, the data 401 of the file 411 specified by the reference data 400, the data 402 of the file 412, and the data 403 of the file 413 is collectively performed. This is called reply processing.

  For example, when the IC card does not support the batch reply process described above (when the batch reply process cannot be executed), only the reference data 400 can be returned in response to reception of the read command RC400. In this case, the card reader / writer 14 can receive only the reference data 400 in response to the transmission of the read command RC400. Therefore, the card reader / writer 14 transmits the read command RC 401 for reading the data 401 of the file 411 specified by the reference data 400 and receives the data 401 of the file 411 returned from the IC card 2. Further, the card reader / writer 14 transmits a read command RC 402 for reading the data 402 of the file 412 specified by the reference data 400 and a read command RC 403 for reading the data 403 of the file 413, and the data 402 of the file 412. The data 403 of the file 413 is received. Thus, when the IC card does not support the batch reply process described above, data cannot be read efficiently. That is, as described above, the IC card 2 that can handle the batch reply process can contribute to the improvement of the data processing efficiency.

  Next, selective execution of batch reply processing will be described. For example, the card reader / writer 14 transmits to the IC card 2 a read command RC400a including a first parameter (first control information) indicating that a batch reply process is executed. The read command RC 400a is a read command for reading the reference data 400. The IC card 2 (CPU 204) executes a batch reply process in response to reception of the read command RC400a. That is, when the IC card 2 (CPU 204) receives the read command RC 400a, the IC card 2 (CPU 204) executes batch reply processing according to the first parameter included in the read command RC 400a, and the reference data 400, the data 401 of the file 411, and the file 412 Response data including data 402 and data 403 of the file 413 is returned.

  Alternatively, the card reader / writer 14 transmits a read command RC400b including a second parameter (second control information) indicating that the batch reply process is not executed to the IC card 2. The read command RC 400b is a read command for reading the reference data 400. The IC card 2 returns the reference data 400 in response to the reception of the read command RC400b. That is, when the IC card 2 (CPU 204) receives the read command RC400a, the IC card 2 (CPU 204) returns response data including the reference data 400 in accordance with the second parameter included in the read command RC400b (without executing batch reply processing). .

  As described above, the card reader / writer 14 can control the execution and non-execution of the batch reply process according to the first or second parameter.

  Next, an example of the continuous reply process will be described with reference to FIG.

  For example, when communication between the terminal 1 and the IC card 2 is started and the IC card 2 is activated, the card reader / writer 14 sends a SELECT command for selecting a target application via the communication I / F 142 to the IC. The data is transmitted to the card 2 (ST201), and the target application is selected. The IC card 2 (CPU 204) receives the SELECT command via the communication I / F 201, activates the target application based on the SELECT command, and gives a normal status to the card reader / writer 14 via the communication I / F 201. Reply (ST202).

  Thereafter, for example, the card reader / writer 14 transmits a read command RC400 for reading the reference data 400 to the IC card 2 (ST103). The IC card 2 (CPU 204) receives the read command RC400 and returns response data including notification data notifying the presence of the reference data 400, the data 401, and the continuation data (data 402, 403) based on the read command RC400. (ST204). As described above, the process of returning the reference data 400, the data 401 of the file 411, and the notification data notifying the existence of the continuous data in response to the reception of the read command RC400 is referred to as a continuous reply process.

  In response to receiving the response data including the notification data, the card reader / writer 14 transmits a read command RC400C for reading the continuation data to the IC card 2 (ST205). Note that the read command RC400C may be the same command as the read command RC400 or a command including parameters different from the read command RC400. In response to the reception of the read command RC 400C, the IC card 2 (CPU 204) can return response data including notification data for notifying the presence of the data 402 and the continuation data (data 403) (ST206).

  In response to receiving the response data including the notification data, the card reader / writer 14 transmits a read command RC400C for reading the continuation data to the IC card 2 (ST207). The IC card 2 (CPU 204) can return response data including the data 403 in response to reception of the read command RC400C (ST208).

  In the above description, the IC card 2 has described the process of returning the reference data 400, the data 401 of the file 411, and the notification data notifying the presence of the continuation data in response to the reception of the read command RC400. Is not limited to this process.

  For example, the IC card 2 may return notification data for notifying the presence of the reference data 400 and the continuation data in response to reception of the read command RC400. In this case, next, when the IC card 2 receives the read command RC400C, it responds to the reception of the read command RC400C and returns notification data for notifying the existence of the data 401 and the continuation data. Next, when the IC card 2 receives the read command RC400C, in response to the reception of the read command RC400C, the IC card 2 returns notification data for notifying the presence of the data 402 and the continuation data. Next, when the IC card 2 receives the read command RC400C, it responds to the reception of the read command RC400C and returns notification data notifying the presence of the data 403 and the continuation data.

  Next, selective execution of the batch reply process and the continuous reply process will be described. For example, the data memory 144 of the IC card 2 stores management data for managing the reference data 400. For example, the card reader / writer 14 sets first designation information (first control information) for designating batch reply processing for management data, or second designation information for designating continuous reply processing (first control information). Second control information) can be set. For example, when the first designation information is set for the management data, the IC card 2 (CPU 204) selects the batch reply process based on the first designation information set in the management data, and reads the read command In response to reception of the RC 400, response data including reference data 400, data 401, data 402, and data 403 is returned. When the second designation information is set for the management data, the IC card 2 (CPU 204) selects the continuous reply process based on the second designation information set in the management data, and sets the read command RC400. In response to reception, response data including notification data for notifying the presence of reference data 400, data 401, and continuation data (data 402, 403) is returned.

  For example, when the data size that can be transmitted and received at one time is limited to a relatively small size, the second designation information is set for the management data. For example, the card reader / writer 14 sets the second designation information for the management data. Alternatively, the CPU 143 of the IC card 2 detects the transmittable / receivable data size and sets the second designation information for the management data based on the detected transmittable / receivable data size. For example, the CPU 143 of the IC card 2 can detect the transmittable / receivable data size based on the communication protocol with the card reader / writer 14. Thereby, transmission / reception of data according to the limited data size becomes possible.

  In addition, when the data size that can be transmitted and received at one time is limited to a relatively large size, the first designation information is set for the management data. For example, the card reader / writer 14 sets the first designation information for the management data. Alternatively, the CPU 143 of the IC card 2 detects the transmittable / receivable data size and sets the first designation information for the management data based on the detected transmittable / receivable data size. As a result, the necessary data transfer can be completed in one transmission / reception, and the communication efficiency can be improved.

  The following effects can be obtained by the batch reply process or the continuous reply process described above.

  For example, the GET PROCESSING OPTIONS command specified by EMV returns AFL as its output. This AFL designates the file ID of the record and the record number, which are parameters of the READ RECORD command that the reader / writer next transmits to the IC card. In accordance with this information, the reader / writer transmits a READ RECORD command to the IC card as many times as the number of records. When the READ RECORD command is transmitted as many times as the number of records according to the AFL parameter, transmission / reception between the reader / writer and the IC card occurs as many times as the number of records, and the transaction time increases accordingly. By the batch reply process or the continuous reply process described above, the number of times of transmission / reception between the card reader / writer 14 and the IC card 2 can be reduced, and the time required for the transaction can be shortened.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. 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 constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be obtained as an invention.

DESCRIPTION OF SYMBOLS 1 ... Terminal, 2 ... IC card, 3 ... IC card holder, 11 ... Main body, 12 ... Display, 13 ... Keyboard, 14 ... Card reader / writer, 20 ... IC chip, 142 ... Communication I / F, 143 ... CPU, 144 ... Data memory, 145 ... RAM, 146 ... ROM, 201 ... Communication I / F, 204 ... CPU, 205 ... Data memory, 206 ... RAM, 207 ... ROM

Claims (9)

Storage means for storing reference data and related data related to the reference data;
A transmission / reception means for transmitting / receiving data;
Control means for controlling to transmit the reference data and the related data based on reception of a read command;
A portable electronic device comprising:   The control means executes a first transmission process for transmitting the reference data or a second transmission process for transmitting the reference data and the related data based on reception of a read command. 2. The portable electronic device according to 1.   3. The portable electronic device according to claim 2, wherein the control unit executes the first transmission process or the second transmission process based on control information included in the read command. Storage means for storing reference data and first and second related data related to the reference data;
A transmission / reception means for transmitting / receiving data;
Control means for controlling to transmit notification data for notifying the presence of the reference data, the first designated data, and the second designated data based on reception of a read command;
A portable electronic device comprising:   5. The portable electronic device according to claim 4, wherein the control unit transmits the second related data based on reception of a read command after transmission of the notification data.   The control means, based on the reception of the read command, a first transmission process for transmitting notification data for notifying the presence of the reference data, the first designated data, and the second designated data, or the reference 5. The portable electronic device according to claim 4, wherein a second transmission process for transmitting data, the first designation data, and the second designation data is executed. 6.   The control means executes the first transmission process based on first control information designating the first transmission process, and executes the second transmission information based on second control information designating the second transmission process. The portable electronic device according to claim 4, wherein the transmission processing is executed. An IC card having an IC module,
The IC module is
Storage means for storing reference data and related data related to the reference data;
A transmission / reception means for transmitting / receiving data;
Control means for controlling to transmit the reference data and the related data based on reception of a read command;
An IC card characterized by comprising: An IC card having an IC module,
The IC module is
Storage means for storing reference data and first and second related data related to the reference data;
A transmission / reception means for transmitting / receiving data;
Control means for controlling to transmit notification data for notifying the presence of the reference data, the first designated data, and the second designated data based on reception of a read command;
An IC card characterized by comprising:

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