JP4764034B2 - Portable electronic device, IC card and portable electronic device self-diagnosis method - Google Patents

Description

The present invention has a control element such as a non-volatile memory that can be written and rewritten and a CPU (Central Processing Unit), and includes means for selectively inputting / outputting data to / from the outside. The present invention relates to a portable electronic device called an IC card that incorporates an IC chip, and more particularly to a portable electronic device in which a plurality of applications are registered , an IC card, and a self-diagnosis method for the portable electronic device .

Recently, as portable electronic devices, nonvolatile memories (EEPROM), volatile memories (RAM), control elements (CPU) for reading and writing data to these memories, and programs for operating the CPU An IC card having an IC chip having a ROM storing the above and having a means for selectively inputting / outputting data to / from the outside is used in various industries.
In general, this type of IC card inputs and outputs data to and from an external device (IC card reader / writer) using commands and responses.

By the way, such an IC card generally does not have a self-diagnosis function for performing a self-diagnosis as to whether or not it normally operates. Recently, an IC card having such a self-diagnosis function has been developed. (For example, see Patent Document 1 and Patent Document 2).
The IC card described in Patent Document 1 performs all self-diagnosis before the output of initial response data performed to an external device after activation. The IC card described in Patent Document 2 After activation, after performing self-diagnosis of registers used for outputting initial response data, only the first byte of initial response data is output, and then the remaining self-diagnosis is performed.

  In general, the content of self-diagnosis in an IC card is to check whether ROM, RAM, CPU, EEPROM, etc. operate correctly. As an example of self-diagnosis, the ROM performs CRC (Cyclic Redundancy Code) calculation for all ROM data, and compares them with the CRC data calculated in advance. Indicates that there is no problem in the ROM data.

The RAM also checks whether data is correctly written and read for all bytes. For example, data “0xAA” is written to each byte, read after writing, then data “0x55” is written, read after writing, and whether there is a problem is confirmed. The CPU checks each register in the same manner as the RAM. Also for the EEPROM, the same check as the RAM is performed for the self-diagnosis area.
JP 63-180185 A JP-A 63-234375

As described above, the timing of the self-diagnosis in the conventional IC card is carried out after the reset is released and before the output of the initial response data or during the output of the initial response data. The timing at which the self-diagnosis can be performed is uniquely performed by the IC card within the range of the timing defined in ISO-7816-3, which is an international standard specification. The timing described in ISO-7816-3 is that it is performed within 400 to 40000 clocks from the release of reset to the beginning of the initial response data, and the initial response data is a bit composed of 372 clocks. And so on.
For this reason, if the memory size of the RAM, EEPROM, or ROM, which is a resource, increases, the self-diagnosis processing time becomes longer, and it is difficult to self-diagnose all at the above timing.

Therefore, the present invention performs self-diagnosis only for functions that are at least necessary for operation, and performs other diagnosis when an application is selected, and performs self-diagnosis for new resources required by the new application. By performing diagnosis, even if resources increase, self-diagnosis is not performed for all resources at the time of activation. An object of the present invention is to provide a portable electronic device , an IC card, and a portable electronic device self-diagnosis method .

The portable electronic device of the present invention has a memory and a control element that reads and / or writes data to and from the memory. When a command is input from the outside, a process corresponding to the command is executed. The processing result is output to the outside, and at least one or more applications are registered, and a memory area is used for each of these applications. A desired application is input by an application selection command input from the outside. Is a portable electronic device that manages the memory area for each application. The application program registration table stores the name of the application and the address indicating the memory area used by the application, and corresponds to each application. To do And diagnostics history table history information indicating whether re region is self-diagnosis is stored, when the application selected by the application selection command from an external, the by referring to the self-diagnostic history table Determination means for determining whether or not the memory area used by the selected application has been self-diagnosed, and if the result of determination by this determination means is that the memory area used by the selected application has been self-diagnosed, the memory The self-diagnosis of the area is skipped, and if the memory area used by the selected application is not self-diagnosed, the self-diagnosis means for self-diagnosis whether the memory area operates normally and the self-diagnosis means select The memory area used by the selected application is not self-diagnosis, If the memory area used by another application overlaps with the memory area used by the application and the memory area used by the other application has been self-diagnosed, the memory used by the other application overlapped with the address of the memory area used by the application An area for self-diagnosis is determined based on the address of the area, and a means for self-diagnosis for the determined area is provided.

The portable electronic device of the present invention has a memory and a control element that reads and / or writes data to and from the memory. When a command is input from an external device, a process corresponding to the command is performed. Execute and output the processing result to an external device, and at least one or more applications are registered, and a program area storing a program for operating the application for each application and the application In a portable electronic device that has a working memory area for selecting a desired application by an application selection command input from an external device , the memory area for each application is managed. Application Application program registration table storing addresses indicating program areas to be used and work memory areas, and history information indicating whether the program areas and work memory areas corresponding to each application are self-diagnosed. The stored self-diagnosis history table, initial response output means for outputting initial response data to the external device after activation of the portable electronic device, and initial response data are output by the initial response output means. After that, when an application selection command is input from the external device, a first determination is made to determine whether or not the application designated by the application selection command is registered by referring to the application program registration table Means and this first Results of the determination by the constant unit, if the specified application is registered, the program area of the specified application by referring to the self-diagnostic history table second determination determines whether the self-diagnosis already means, and the second determination means results of the determination by, if the program of a specified application is not already self-diagnosis, the first self-diagnosis means for whether self the program area to work correctly, Refer to the self-diagnosis history table when the program area of the designated application has been self-diagnosed as a result of the determination by the second determination means, or when the self-diagnosis by the first self-diagnosis means is completed. the third is determined whether the self-diagnosis already working memory area of the specified application by And determination means, the result of the determination by the third determination means, when the working memory area of the specified application is not already self-diagnosis, a second of said working memory region to whether self operates normally In the self-diagnostic means and the second self-diagnostic means, the working memory area of the designated application is not self-diagnosed and overlaps with the working memory area of another application, and If the working memory area has been self-diagnosed, the area to be self-diagnosed this time is determined based on the address of the working memory area of the application and the address of the working memory area of another overlapping application, means for self-diagnosis for a region, of the determination by the third determination means results specified application Command processing means for executing processing for a command when a command is input from the external device when the working memory area has been self-diagnosed, or after self-diagnosis by the second self-diagnosis means is completed It has.

Further, the IC card of the present invention has a memory and a control element for reading and / or writing data to / from the memory, and when a command is input from the outside, executes processing corresponding to the command. The processing result is output to the outside, and at least one or more applications are registered, and a memory area is used for each of these applications. A desired application is input by an application selection command input from the outside. In an IC card that can select the memory area for each application, an application program registration table storing an application name and an address indicating a memory area used by the application, and a memory corresponding to each application Territory There and diagnostics history table history information indicating whether it is the self-diagnosis is stored, when the application selected by the application selection command from an external, the selected by referring to the self-diagnostic history table A determination unit that determines whether or not the memory area used by the application is self-diagnosis; and as a result of determination by the determination unit, if the memory area used by the selected application is self-diagnosis, The self-diagnosis is skipped, and if the memory area used by the selected application is not self-diagnosis, the self-diagnosis means for self-diagnosis whether the memory area operates normally, and the self-diagnosis means selected by the self-diagnosis means The memory area used by the application is not self-diagnosis, and other applications If the memory area used by the other application overlaps with the memory area used by the application, and the memory area used by the other application that overlaps the address of the memory area used by the application And an IC module having a means for performing self-diagnosis on the determined area and an IC card main body containing the IC module.

Furthermore, the IC card of the present invention has a memory and a control element for reading and / or writing data to / from the memory, and executes a process corresponding to the command when a command is input from an external device. The processing result is output to an external device, and at least one or more applications are registered, a program area storing a program for operating the application for each application, and work used by the application In an IC card that has a memory area for use and can select a desired application by an application selection command input from an external device , the memory area for each application is managed and used by the application name and application The Application program registration table storing each address indicating the gram area and working memory area, and each history information indicating whether the corresponding program area and working memory area are self-diagnosed for each application. Self-diagnosis history table, initial response output means for outputting initial response data to the external device after activation of the portable electronic device, and after the initial response data is output by the initial response output means First determination means for determining whether or not an application designated by the application selection command is registered by referring to the application program registration table when an application selection command is input from the external device; In this first determination means That a result of the determination, if the specified application is registered, the program area of the specified application by referring to the self-diagnostic history table and a second determining means for determining whether the self-diagnosis already , the result of the determination by the second determination means, when the program of a specified application is not already self, the first self-diagnosis means for whether self the program area to work properly, the first As a result of the determination by the determination unit 2, when the program area of the designated application has been self-diagnosis, or when the self-diagnosis by the first self-diagnosis unit is completed, the self-diagnosis history table is referred to Third determination means for determining whether the working memory area of the designated application has been self-diagnosed As a result of the determination by the third determination means, if the working memory area of the designated application has not been self-diagnosed, the second self-diagnosis for self-diagnosing whether or not the working memory area operates normally And the second self-diagnostic means, the work memory area of the designated application is not self-diagnosed , but overlaps the work memory area of another application, and the work memory of the other application that overlaps If the area has been self-diagnosed, the area to be self-diagnosed this time is determined based on the address of the working memory area of the application and the address of the working memory area of another overlapping application, and the determined area means for self-diagnosis, the third determination means results of the determination by a working main of a given application A command processing means for executing a process for the command when a command is input from the external device after the self-diagnosis has been completed or after the self-diagnosis by the second self-diagnosis means is completed. An IC module and an IC card main body containing the IC module.

According to the present invention, the self-diagnosis is performed only for the minimum necessary functions to operate, and other diagnoses are executed when an application is selected, and self-diagnosis is performed for new resources required by the new application. By performing diagnosis, even if resources increase, self-diagnosis is not performed for all resources at the time of activation. A portable electronic device , an IC card, and a portable electronic device self-diagnosis method can be provided.

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 embodiment. In this IC card system, an IC card 10 can be connected to a terminal device 12 such as a personal computer via a card reader / writer 11, and a keyboard 13, a CRT display unit 13, and a printer 15 are connected to the terminal device 12. Composed.

  FIG. 2 shows a configuration of the IC card 10, and includes a control element 101 (hereinafter also simply referred to as a CPU) as a control unit, a data memory 102, a working memory 103, a program memory 104, and a card reader / writer 12. It is comprised by the contact part 105 for obtaining this electrical contact. Of these, the portion within the broken line (the control element 101, the data memory 102, the working memory 103, and the program memory 104) is composed of one (or a plurality) of IC chips. Are integrated into an IC module and embedded in the IC card main body C.

  The data memory 102 is used for storing various types of data, and is composed of, for example, a nonvolatile memory such as an EEPROM that can be rewritten. Hereinafter, the data memory 102 is also simply referred to as an EEPROM.

  The working memory 103 is a working memory for temporarily storing processing data when the control element 101 performs processing, and is configured by, for example, a RAM. Hereinafter, the working memory 103 is also simply referred to as RAM.

  The program memory 104 is composed of, for example, a non-volatile memory that cannot be rewritten, such as a mask ROM, and stores a control program for the control element 101, a plurality of application programs, and the like. Hereinafter, the program memory 104 is also simply referred to as a ROM.

FIG. 3 shows the configuration of the data memory 102. The data memory 102 stores data related to a plurality of applications in a file structure. In the example of FIG. 3, for example, two credit applications are registered.
In other words, a master file (MF: Master File) 201 is at the top, and application files (hereinafter, also simply referred to as ADF (Application Dedicated File)) 202 and 203 are provided as folders set for each application. Further, under these application files 202 and 203, elementary files (hereinafter also simply referred to as EF (Elementary File)) 204, 205, 206, 207, 208, and 209 that are actually used in the application are respectively stored. It is the configuration provided.

FIG. 4 shows a memory map in the present embodiment, and shows an address indicating a used memory area and a type of the memory.
FIG. 5 shows an application program registration table according to the present embodiment. The application program registration table includes an application name, a program area used by the application, and a RAM area, and is provided in, for example, a ROM.
FIG. 6 shows an example of an application program data storage format in the present embodiment, which is composed of program data and CRC (cyclic code) data.
FIG. 7 shows a RAM self-diagnosis history table, which stores a history of whether or not a self-diagnosis diagnosis of a RAM area used for each application has been performed, and is provided in, for example, the RAM.
FIG. 8 shows a self-diagnosis history table of the application program, in which a history as to whether or not self-diagnosis of the application program area has been performed is stored for each application, which is provided in, for example, the RAM.

  FIG. 9 shows a format example of the application (file) selection command. As shown in the figure, it is composed of a command classification part CLA (class), an instruction part INS (instruction), parameter parts P1 and P2, a data length Le, and data (application name) Data, and CLA / INS = 00 / The case of A4 is an application selection command. When the parameter P1 is “04”, ADF is selected, when “00” is DF, and when “02” is EF, it is EF. In this example, self-diagnosis is performed when ADF is selected. In cases other than ADF selection, processing corresponding to the parameter is performed.

  Next, the operation of the IC card 10 will be described with reference to the flowcharts shown in FIGS.

  First, the IC card 10 is activated by an activation operation (reset release) from the card reader / writer 11 (step S1). When activated, the CPU 101 performs self-diagnosis (step S2). As a self-diagnosis of the CPU 101, it is confirmed whether data is normally written to and read from the register. For example, data “0xAA” is written and read, and then data “0x55” is written and read. This confirms that the data in the register operates normally without interfering with each bit. If not performed normally, the operation is stopped at that time.

  If the result of the self-diagnosis in step S2 is normal, the CPU 101 performs self-diagnosis on a RAM area (a part of the RAM) necessary only for data transmission and reception (step S3). ). As a self-diagnosis of the RAM, it is confirmed whether data is normally written and read normally for each byte of the RAM in the self-diagnosis area. For example, data “0xAA” is written and read, and then data “0x55” is written and read. As a result, it is confirmed that the data of each byte operates normally without interfering with each bit. If an abnormality occurs in the area to be checked, the operation stops at that point.

  If the result of the self-diagnosis in step S3 is normal, the CPU 101 transmits initial response data to the card reader / writer 11 (step S4), and then transmitted from the card reader / writer 11. Waiting for a command to be received (step S5).

  When receiving a command from the card reader / writer 11, the CPU 101 first confirms whether the command is an application selection command from the CLA / INS code (step S6). If it is not an application selection command, each command processing is executed (step S7).

  In the case of an application selection command, the CPU 101 confirms whether the parameter P1 is “04”, that is, ADF selection (step S8). If it is not ADF selection, the CPU 101 performs processing corresponding to the parameter (step S9).

  When it is ADF selection, CPU101 confirms whether the application designated from the application program registration table shown in FIG. 5 is registered (step S10). For example, if the application selection command is the example shown in FIG. 9, the application name is “A000000005112233”, so that the application name ADF, the corresponding program area, and the RAM area used are registered as shown in FIG. Yes.

  If the designated application is not registered, the CPU 101 performs error processing indicating that the designated ADF does not exist (step S1), and transmits the status to the card reader / writer 11 (step S12). ).

  As shown in FIG. 5, when the designated application is registered, the CPU 101 confirms whether the self-diagnosis of the program area in which the designated ADF program is stored has already been performed (step S13). This confirmation refers to the self-diagnosis history table of the application program shown in FIG. 8 stored in the RAM. If the self-diagnosis has already been performed as a result of this confirmation, the self-diagnosis of the program area is skipped.

When the self-diagnosis of the program area in which the designated ADF program is stored is not performed, the CPU 101 performs the self-diagnosis of the program area (step S14). Since the application program data storage format is configured as shown in FIG. 6, the program area self-diagnosis stores CRC data in advance at the end of all area data, and calculates the CRC of all data during self-diagnosis. The data is compared with CRC data registered in advance, and if they match, it is determined as normal.
If the result of the self-diagnosis is normal, the CPU 101 sets data indicating execution in the self-diagnosis history table of the application program shown in FIG.
If the result of the self-diagnosis is abnormal, the CPU 101 performs error processing indicating a self-diagnosis abnormality (step S15) and transmits the status to the card reader / writer 11 (step S12).

  If the result of the self-diagnosis is normal, the CPU 101 confirms whether a self-diagnosis of the RAM area used by the designated ADF has already been performed (step S16). This confirmation refers to the RAM self-diagnosis history table shown in FIG. 7 stored in the RAM. As a result of this confirmation, if the self-diagnosis has already been performed, the self-diagnosis of the RAM area is skipped.

  If the self-diagnosis of the RAM area used in the designated ADF has not been performed, the CPU 101 performs self-diagnosis of the RAM area (step S17). In this case, first, by referring to the RAM self-diagnosis history table shown in FIG. 7, it is confirmed whether the RAM area has already been self-diagnosed by another application. As a result of this confirmation, if the RAM area has been self-diagnosed by another application, refer to the application program registration table of FIG. 5 to determine the area (self-diagnosed RAM area) used by the other application. The address is stored, and compared with the address of the RAM area to be self-diagnosis this time, only the non-overlapping RAM area is self-diagnosed.

Here, a specific example will be described with reference to FIGS.
First, specific example 1 in FIG. 12 is a case where the application name specified this time is “A000000005112233”, but the RAM area used by all the applications is “unexecuted”. Therefore, in this case, the RAM self-diagnosis area has an address of “0x0000-0x2FFF” from the application program registration table of FIG.

  Next, in the specific example 2 of FIG. 13, the application name specified this time is “A000000005112233”, but in one of the other applications, in the example of FIG. 13, the RAM used by the application whose application name is “A000000005445566”. This is a case where the area is “performed”. Therefore, in this case, the self-diagnosis area of the RAM is an address of “0x2000-0x2FFF” that is the difference between “0x0000-0x2FFF” and “0x0000-0x1FFF” from the application program registration table of FIG.

  Next, in the specific example 3 of FIG. 14, the application name specified this time is “A000000005112233”, but in the example of FIG. 14, the RAM used by the application with the application name “A000000005778899”. This is a case where the area is “performed”. Therefore, in this case, from the application program registration table of FIG. 5, the RAM area “0x0000-0x2FFF” of the application specified this time is already included in the “executed” RAM area “0x0000-0x3FFF”. Because it is, it becomes none. That is, the self-diagnosis of the RAM area of the application specified this time is skipped.

  Next, in the specific example 4 of FIG. 15, the application name specified this time is “A000000005112233”, but in all other applications, in the example of FIG. 15, the application names are “A000000005445566” and “A000000005778899” This is a case where the RAM area to be used is “performed”. Therefore, in this case, the RAM self-diagnosis area of the application designated this time is “0x0000-0x2FFF” in the RAM area “0x0000-0x3FFF” already “executed”, as in the specific example 3 of FIG. Since it is included, it becomes none. That is, the self-diagnosis of the RAM area of the application specified this time is skipped.

  Next, in the specific example 5 of FIG. 16, the application name specified this time is “A000000005112233”, but the RAM area used by the application is already “executed” by another application, and all other applications In the example of FIG. 16, the RAM area used by the application whose application name is “A000000005445566” and “A000000005778899” is “unexecuted”. Therefore, in this case, there is no RAM self-diagnosis area because the RAM area “0x0000-0x2FFF” of the application specified this time is already “executed”. That is, the self-diagnosis of the RAM area of the application specified this time is skipped.

  In the self-diagnosis of the RAM area in step S17, it is confirmed whether data is normally written and read normally for each byte of the self-diagnosis area. For example, data “0xAA” is written and read, and then data “0x55” is written and read. As a result, it is confirmed that the data of each byte operates normally without interfering with each bit.

  If the result of the self-diagnosis is normal, the CPU 101 sets data indicating execution in the RAM self-diagnosis history table shown in FIG. Then, the CPU 101 executes processing for the command (step S19), transmits a response to the command processing to the card reader / writer 11 (step S20), and returns to step S5.

  If the result of the self-diagnosis is abnormal, the CPU 101 performs error processing indicating a self-diagnosis abnormality (step S18), and transmits the status to the card reader / writer 11 (step S12).

As described above, according to the above-described embodiment, after the activation of the IC card, the self-diagnosis is performed only for the functions necessary for the operation of the IC card, and the application is selected for the other diagnosis. If so, perform a self-diagnosis on new resources needed by the new application.
Therefore, even if the resources of the IC card increase in the future, the self-diagnosis processing time will be significantly shortened by performing the diagnosis in order as necessary instead of self-diagnosis for all resources at the time of activation. can do.

1 is a block diagram schematically showing a configuration of an IC card system that handles an IC card 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 typically the concept of the file structure in a data memory. The figure explaining a memory map. The figure explaining an application program registration table. The figure which shows an example of an application program data storage format. The figure explaining RAM self-diagnosis history table. The figure explaining the self-diagnosis history table of an application program. The figure which shows the example of a format of an application selection command. The flowchart explaining operation | movement. The flowchart explaining operation | movement. The figure explaining the specific example 1 of operation | movement. The figure explaining the specific example 2 of operation | movement. The figure explaining the specific example 3 of operation | movement. The figure explaining the example 4 of operation | movement. The figure explaining the example 5 of operation | movement.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... IC card (portable electronic device), 11 ... Card reader / writer (external device), 12 ... Terminal device, 13 ... Keyboard, 14 ... CRT display part, 15 ... Printer, 101 ... Control element (CPU), 102 Data memory (EEPROM), 103 Working memory (RAM), 104 Program memory (ROM), 105 Contact field, 201 Master file (MF), 202, 203 Application file (ADF), 204-209 Elementary file (EF).

Claims (6)

It has a memory and a control element that reads and / or writes data to / from this memory. When a command is input from the outside, it executes processing corresponding to this command and outputs the processing result to the outside. In addition, in the portable electronic device in which at least one or more applications are registered and a memory area is used for each of these applications, and a desired application can be selected by an application selection command input from the outside. ,
Managing the memory area for each application, an application program registration table storing the name of the application and the address indicating the memory area used by the application;
A self-diagnosis history table storing history information indicating whether or not the memory area corresponding to each application has been self-diagnosed;
When an application is selected by an application selection command from the outside , a determination unit that determines whether or not the memory area used by the selected application is self-diagnosis by referring to the self-diagnosis history table ;
If the memory area used by the selected application has already been self-diagnosed as a result of determination by this determining means, the self-diagnosis of the memory area is skipped, and the memory area used by the selected application is not self-diagnosed Self-diagnosis means for self-diagnosis whether the memory area operates normally;
In this self-diagnosis means, the memory area used by the selected application is not self-diagnosed, but overlaps with the memory area used by another application, and the memory area used by the other application is self-diagnosed. If there is, means for determining the area to be self-diagnosed this time based on the address of the memory area used by the application and the address of the memory area used by the overlapping other application, and means for self-diagnosis for the determined area;
A portable electronic device comprising: It has a memory and a control element that reads and / or writes data from / to this memory. When a command is input from an external device, processing corresponding to this command is executed and the processing result is output to the external device. In addition, at least one or more applications are registered, and each application has a program area storing a program for operating the application and a working memory area used by the application, In a portable electronic device in which a desired application can be selected by an application selection command input from an external device,
Managing the memory area for each application, an application program registration table in which each address indicating the name of the application, the program area used by the application, and the working memory area is stored;
A self-diagnosis history table storing each history information indicating whether or not a program area and a working memory area corresponding to each application are self-diagnosed;
Initial response output means for outputting initial response data to the external device after activation of the portable electronic device;
After the initial response data is output by the initial response output means, when an application selection command is input from the external device, the application specified by the application selection command is registered by referring to the application program registration table. First determination means for determining whether or not
If the specified application is registered as a result of the determination by the first determining means, it is determined whether or not the program area of the specified application has been self-diagnosed by referring to the self-diagnosis history table. A second determination means;
Results of the determination by the second determination means, when the program of a specified application is not already self, the first self-diagnosis means for whether self the program area to work correctly,
Refer to the self-diagnosis history table when the program area of the designated application has been self-diagnosed as a result of the determination by the second determination means, or when the self-diagnosis by the first self-diagnosis means is completed. A third determination means for determining whether or not the working memory area of the designated application is self-diagnosis;
Results of the determination by the third determination means, when the working memory area of the specified application is not already self-diagnosis and the second self-diagnosis means for whether self the working memory area to operate normally ,
In the second self-diagnostic means, the working memory area of the designated application is not self-diagnosis, and the working memory area of another application overlaps with the working memory area of the other application. If the diagnosis has been completed, an area to be self-diagnosed this time is determined based on the address of the working memory area of the application and the address of the working memory area of another overlapping application, and self-diagnosis is performed on the determined area. Means,
As a result of the determination by the third determination means, if the working memory area of the designated application has been self-diagnosis, or after the self-diagnosis by the second self-diagnosis means is completed, a command is issued from the external device. When input, command processing means for executing processing for the command;
A portable electronic device comprising: After the activation of the portable electronic device, a self-diagnosis is performed as to whether or not it normally operates at least for functions necessary for data transmission / reception before the initial response output means outputs the initial response data The portable electronic device according to claim 2 , further comprising third self-diagnosis means. It has a memory and a control element that reads and / or writes data to / from this memory. When a command is input from the outside, it executes processing corresponding to this command and outputs the processing result to the outside. In addition, in an IC card in which at least one or more applications are registered and a memory area is used for each of these applications, and a desired application can be selected by an application selection command input from the outside.
The memory area for each application is managed, and an application program registration table storing an address indicating the name of the application and the memory area used by the application, and whether or not the memory area corresponding to each application has been self-diagnosed And a memory area used by the selected application by referring to the self-diagnosis history table when an application is selected by an external application selection command. Determines whether the self-diagnosis has been completed, and if the result of determination by the determination means is that the memory area used by the selected application has been self-diagnosed, the self-diagnosis of the memory area is skipped and selected. A And self diagnosis means if the memory region is not already self-diagnosis of whether or not the self-diagnosis the memory area to work properly that publication is to use, in the self-diagnosis unit, the memory region is self selected application uses If the memory area used by the other application is self-diagnosed, the address of the memory area used by the application and the other An IC module having a means for self-diagnosis based on an address of a memory area used by an application and a means for self-diagnosis for the determined area ;
An IC card body containing the IC module;
An IC card comprising: It has a memory and a control element that reads and / or writes data from / to this memory. When a command is input from an external device, processing corresponding to this command is executed and the processing result is output to the external device. In addition, at least one or more applications are registered, and each application has a program area storing a program for operating the application and a working memory area used by the application, In an IC card in which a desired application can be selected by an application selection command input from an external device,
Managing the memory area for each application, an application program registration table storing each address indicating the name of the application, the program area used by the application, and the working memory area, and the program area corresponding to each application, A self-diagnosis history table storing each history information indicating whether or not the working memory area has been self-diagnosed, and outputting the initial response data to the external device after activation of the portable electronic device initial response output means, after the initial response data is output by the initial response output means, when the application selection command is input from the external device, by referring to the application program registration table, the application selected scene A first determination means for determining whether the given application is registered by de, a result of determination by the first determination unit, if the specified application is registered, the self-diagnostic history table The second determination means for determining whether or not the program area of the designated application has been self-diagnosed by referring to, and the program area of the designated application is determined as a result of the determination by the second determination means. If not already diagnosed, the first self-diagnostic means for the program area is whether self operates normally, the result of determination by the second determination means, a program of a specified application is in the diagnostic test already If, alternatively, the self-diagnosis is completed by the first self-diagnosis means, the self-diagnostic history table Third determining means for determining whether the self-diagnosis already working memory area of the specified application is by irradiation, the result of the determination by the third determination means, a working memory of the specified application If the area is not already self-diagnosis and the second self-diagnosis means for the working memory area is whether self operates normally, in the second self-diagnosis means, a working memory of a specified application Is not self-diagnosed and overlaps with the working memory area of another application, and the overlapping working memory area of the other application is self-diagnosed, the duplicate of the address of the working memory area of the application Determine the area to be self-diagnosed this time based on the address of the working memory area of other applications If the result of the determination by the third determination means and the working memory area of the designated application has already been self-diagnosed, or the self-diagnosis by the second self-diagnosis means An IC module having command processing means for executing processing for the command when a command is input from the external device after the termination;
An IC card body containing the IC module;
An IC card comprising: It has a memory and a control element that reads and / or writes data to / from this memory. When a command is input from the outside, it executes processing corresponding to this command and outputs the processing result to the outside. In addition, a portable electronic device in which at least one application is registered and has a memory area used for each of these applications, and a desired application can be selected by an application selection command input from the outside. A self-diagnosis method,
The memory area for each application is managed, and an application program registration table storing an address indicating the name of the application and the memory area used by the application, and whether or not the memory area corresponding to each application has been self-diagnosed And a self-diagnosis history table storing history information indicating
A determination step of determining whether or not the memory area used by the selected application is self-diagnosed by referring to the self-diagnosis history table when an application is selected by an external application selection command;
If the memory area used by the selected application has already been self-diagnosed as a result of the determination in this determination step, the self-diagnosis of the memory area is skipped, and the memory area used by the selected application has not been self-diagnosed Is a self-diagnosis process for self-diagnosis whether the memory area operates normally;
In this self-diagnosis process, the memory area used by the selected application is not self-diagnosed, overlaps with the memory area used by another application, and the memory area used by the other application is self-diagnosed. If there is, determining the area to be self-diagnosed this time based on the address of the memory area used by the application and the address of the memory area used by the overlapping other application, self-diagnosis for the determined area,
A self-diagnosis method for a portable electronic device, comprising:

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