JP4738249B2 - Portable electronic device, IC card and IC module - Google Patents

Description

The present invention incorporates an IC (integrated circuit) chip having a control element such as a writable / rewritable nonvolatile memory and a CPU (Central Processing Unit), for example, and performs various processes based on commands supplied from the outside. The present invention relates to a portable electronic device such as an IC card , an IC card, and an IC module .

  Recently, as a portable electronic device, an EEPROM as a nonvolatile memory, a RAM as a volatile memory, a CPU as a control element for accessing (reading or writing data, etc.) the memory, and the CPU An IC card having a ROM storing an operation program and the like and incorporating an IC chip having means for inputting / outputting data based on command data supplied from the outside is used in various industrial fields.

  In general, when this type of IC card receives a data read command from an external device (IC card reader / writer), the target data is searched from a nonvolatile memory, and if the corresponding data exists, The data length is read from the head.

The data in the non-volatile memory is composed of an identifier (Tag) indicating the type of the data , length information (Length) indicating the length of the data portion, and a data portion (Value) indicating the data itself. Some data strings are configured as so-called TLV data strings (hereinafter referred to as TLV data objects).

When reading such a TLV data object, a TLV data having an identifier specified by the command is supplied by supplying a data read command (for example, a GET DATA command) having a function of reading the TLV data object from an external device. Reads an object with a specified length. In this case, the data read in the response data field for the data read command is one of the identifier of the TLV data object, the length information, the concatenation of the data part, or only the data part (for example, Non-Patent Document 1). , See Patent Document 1).
ISO / IEC7816-4 JP 2005-292991 A

  However, the conventional technique has a problem that when reading the TLV data object, it is necessary to select whether to output the entire TLV data object or only the data part (Value) as the entire IC card.

Therefore, in the present invention, for example, control information for instructing the output method of the TLV data object is included, and the TLV data object unit, the file unit storing the TLV data object, or the folder unit managing the file is used. It is an object of the present invention to provide a portable electronic device , an IC card, and an IC module that can individually control the output method of TLV data objects by selecting whether to manage control information.

The portable electronic device of the present invention includes at least one or more data strings configured by connecting an identifier indicating the type of data, length information indicating the length of the data portion, and a data portion indicating the data. Control information for instructing whether to read and output a data string formed by connecting the stored memory, the identifier, the length information, and the data part, or to read and output the data part in the data string in advance When the data string is read from the memory based on the stored control information storage means and the data read command supplied from the outside, the control information is referred to by referring to the control information stored in the control information storage means in advance. Processing means for reading out and outputting the data string in accordance with the output method instructed by the information.

In addition, the IC card of the present invention stores at least one data string formed by connecting an identifier indicating the type of data, length information indicating the length of the data portion, and a data portion indicating the data. Control information for instructing whether to read and output a data string formed by connecting the memory, the identifier, the length information, and the data part or to read and output the data part in the data string is stored in advance. Control information storage means, and when reading a data string from the memory based on a data read command supplied from the outside, the control information is obtained by referring to the control information stored in advance in the control information storage means. An IC module having a processing means for reading out and outputting the data string in accordance with an instructing output method, and an IC card body containing the IC module It is equipped with.
In addition, the IC module of the present invention includes at least one data string configured by connecting an identifier indicating the type of data, length information indicating the length of the data portion, and a data portion indicating the data. Control information for instructing whether to read and output a data string formed by connecting the stored memory, the identifier, the length information, and the data part, or to read and output the data part in the data string in advance When the data string is read from the memory based on the stored control information storage means and the data read command supplied from the outside, the control information is referred to by referring to the control information stored in the control information storage means in advance. Processing means for reading out and outputting the data string in accordance with the output method instructed by the information.

According to the present invention, for example, it has control information instructing the output method of a TLV data object, and is in any one of a TLV data object unit, a file unit storing a TLV data object, and a folder unit managing a file. By selecting whether to manage control information, it is possible to provide a portable electronic device , an IC card, and an IC module that can individually control the output method of TLV data objects.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration example of an IC card system that handles an IC card as a portable electronic device according to the present invention. In this IC card system, the IC card 11 can be connected to a terminal device 13 such as a personal computer via a card reader / writer 12, and a keyboard 14, a CRT display unit 15, and a printer 16 are connected to the terminal device 13. Composed.

  FIG. 2 shows the configuration of the IC card 11, and includes a CPU 101 as a control element, a data memory 102 as a storage means (memory) whose contents can be rewritten, a working memory 103, a program memory 104, a card reader, The contact portion 105 is used to obtain electrical contact with the writer 12. Of these, the portion within the broken line (CPU 101, data memory 102, working memory 103, program memory 104) is composed of one (or a plurality) of IC chips 106, and further this IC chip 106 and contact portion 105. Are integrated into an IC module and embedded (stored) in the IC card main body 11a.

  The CPU 101 is a control unit that performs various types of determination processing, determination processing, and data processing such as writing to and reading from a memory.

  The data memory 102 is composed of a nonvolatile memory such as an EEPROM (Electrical Eraseable and Programmable Read Only Memory) that can be rewritten, and stores various application data in a file structure. Is done.

  The working memory 103 is a working memory for temporarily storing processing data when the CPU 101 performs processing. For example, the working memory 103 includes a volatile memory such as a RAM (Random Access Memory).

The program memory 104 is composed of a non-rewritable fixed memory such as a mask ROM (read only memory), for example, and stores a control program for the CPU 101, fixed data, and the like.
In the data memory 102, for example, as shown in FIG. 3, a plurality of folders F1, F2,... For collecting and managing each file are set, and in each of these folders F1, F2,. A plurality of files F11, F12,..., F21, F22,. Each of the files F11, F12,..., F21, F22,... Stores (stores) a plurality of TLV data objects (TLV structure data strings) D1, D2,.

The TLV data objects D1, D2,... Stored in the files F11, F12,..., F21, F22,... Are, for example, an identifier (Tag) 21 indicating the type of the data and data a Department of length information indicating the length (length) 22, a corresponding data unit that indicates the data itself (Value) data string constituted by connecting a 23, provided such data string at least one Configured.

  Further, in a specific area in the data memory 102, output control information (control information) instructing the output method of the TLV data object is stored in advance, and the output control information is stored in units of TLV data objects and the TLV data. Output control information management unit information for setting which unit is to be managed among the file unit in which the object is stored and the folder unit for managing the file is stored.

  The output control information is, for example, information indicating whether a TLV data object configured by connecting an identifier, length information, and a data portion is read and output as it is, or only the data portion is read and output. It can be set in units of TLV data objects, files or folders.

Next, the TLV data object read processing in response to the data read command in such a configuration will be described with reference to the flowchart shown in FIG .
First, it is assumed that a card reader / writer 12 as an external device supplies a data read command (for example, a GET DATA command) to the IC card 11. In the IC card 11, the contact unit 105 receives a data read command. The received data read command is supplied from the contact unit 105 to the CPU 101 and recognized.

  When the CPU 101 issues a data read command (step S1), the CPU 101 checks whether or not a TLV data object having an identifier specified by the command exists in the data memory 102 (step S2), and the TLV data object exists. If not, an error status word indicating that it does not exist is set in the output buffer in the working memory 103 (step S3), and then the error status word in the output buffer is output to the card reader / writer 12 to perform the processing. The process ends (step S4).

  As a result of the check in step S2, if the designated TLV data object exists, the CPU 101 refers to the output control information management unit information stored in advance in the data memory 102, thereby converting the output control information into the TLV data. It is checked which unit is managed among the object unit, the file unit in which the TLV data object is stored, and the folder unit for managing the file (step S5).

  As a result of this check, if the file is managed in units of folders that are managed together, the output control information of the folder that is managed by collecting the files is referred to (step S6), and the file storing the TLV data object If managed in units, the output control information of the file storing the TLV data object is referred to (step S7). If managed in units of TLV data objects, the output control information of the TLV data object is referred to. Thus (step S8), it is confirmed whether the output method of the instructed TLV data object reads and outputs the TLV data object as it is or only reads and outputs the data portion (step S9).

  As a result of the confirmation, when the output method of the TLV data object reads and outputs the TLV data object as it is, the designated TLV data object is read as it is and set in the output buffer in the working memory 103 (step S10). When only the data part of the data object is read and output, only the data part of the designated TLV data object is read and set in the output buffer in the working memory 103 (step S11).

  Next, the CPU 101 sets the read completion status word in the output buffer in the working memory 103 (step S12), and then outputs the data string in the output buffer and the read completion status word to the card reader / writer 12 to The process ends (step S4).

  As described above, according to the above-described embodiment, as the output format of the TLV data object, a TLV data object configured by concatenating an identifier, length information, and a data portion is read and output as it is, or a data portion Whether to read out and output only can be selected by the output control information.

  Also, the output format of the TLV data object by the output control information can be set in units of TLV data objects, files for storing TLV data objects, and folders for managing files collectively.

  Further, the output control information is managed in any one of TLV data object unit, file unit storing TLV data object, folder unit for collecting and managing files (Dedicated File (DF) defined in ISO / IEC7816-4). You can choose what to do.

  In the above-described embodiment, the case where the present invention is applied to an IC card as a portable electronic device has been described. However, the present invention is not limited to this, and for example, a portable terminal device called PDA, a cellular phone, etc. However, it is not limited to the card type, and may be a booklet type, a block type, or a tag type.

  In the above embodiment, the case where the portable electronic device is applied to a contact type IC card has been described. However, the present invention is not limited to this, and the present invention is not limited to a non-contact type (wireless type) IC card. Can be applied similarly.

1 is a block diagram schematically showing a configuration of an IC card system using an IC card as a portable electronic device according to an embodiment of the present invention. 1 is a block diagram schematically showing the configuration of an IC card. The figure which shows the example of a file structure in a data memory typically. The figure which shows the structural example of a TLV data object. The flowchart explaining the reading process of the TLV data object with respect to a data read command.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... IC card (portable electronic device), 12 ... Card reader / writer (external device), 13 ... Terminal device, 11a ... Card main body, 102 ... Communication part, 103 ... IC chip, 101 ... CPU, 102 ... Data memory (Memory), 103 ... working memory, 104 ... program memory, 105 ... contact part, 106 ... IC chip, 21 ... identifier, 22 ... length information, 23 ... data part, F1, F2 ... folder, F11, F12, F21 , F22... File, D1, D2... TLV data object (TLV structure data string).

Claims (9)

A memory that stores at least one data string configured by connecting an identifier indicating a type of data, length information indicating the length of the data portion, and a data portion indicating the data;
Control that prestores control information indicating whether to read and output a data string formed by connecting the identifier, length information, and data part, or to read and output the data part in the data string Information storage means;
When reading a data string from the memory based on a data read command supplied from the outside, the data according to the output method instructed by the control information by referring to the control information stored in advance in the control information storage means Processing means for reading and outputting the columns;
A portable electronic device comprising: The portable electronic device according to claim 1 , wherein the control information can be set in units of files in which the data strings are stored. The portable electronic device according to claim 1 , wherein the control information can be set in units of folders for managing a file in which the data string is stored. Control information management unit information storing control information management unit information for setting which unit to manage the control information among a data string unit, a file unit in which the data string is stored, and a folder unit for managing the file 2. The portable electronic device according to claim 1 , further comprising storage means. A memory storing at least one data string formed by connecting an identifier indicating the type of data, length information indicating the length of the data portion, and a data portion indicating the data; and the identifier and length information Control information storage means for preliminarily storing control information for instructing whether to read out and output a data string constituted by connecting the data part and the data part or to read out and output the data part in the data string ; When reading a data string from the memory based on a data read command supplied from the control information storage means, the data string according to the output method instructed by the control information by referring to the control information stored in advance in the control information storage means An IC module having processing means for reading out and outputting,
An IC card body containing the IC module;
An IC card comprising: 6. The IC card according to claim 5 , wherein the control information can be set for each file in which the data string is stored. 6. The IC card according to claim 5 , wherein the control information can be set for each folder that manages a file in which the data string is stored. Control information management unit information storing control information management unit information for setting which unit to manage the control information among a data string unit, a file unit in which the data string is stored, and a folder unit for managing the file 6. The IC card according to claim 5 , further comprising storage means. A memory that stores at least one data string configured by connecting an identifier indicating a type of data, length information indicating the length of the data portion, and a data portion indicating the data;
Control that prestores control information indicating whether to read and output a data string formed by connecting the identifier, length information, and data part, or to read and output the data part in the data string Information storage means;
When reading a data string from the memory based on a data read command supplied from the outside, the data according to the output method instructed by the control information by referring to the control information stored in advance in the control information storage means Processing means for reading and outputting the columns;
An IC module comprising:

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