JP2003150913A - Portable electronic device, file selecting method of portable electronic device and host device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electronic device, a file selecting method of the portable electronic device, and a host device capable of shortening processing time required for selecting a used file even if identification information used when selecting the file is not completely seized. SOLUTION: An IC card 1 determines DF definition information coincident with a DF name 307 designated by a DF selecting command from definition information on a directory when receiving the DF selecting command of access frequency order, and outputs information on the DF definition information determined as the largest in an access frequency among the DF definition information coincident with the DF name to an external part as a response.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, writing / writing.
A portable electronic device such as an IC card that incorporates an IC (integrated circuit) chip having a rewritable non-volatile memory and a CPU, and executes various processes based on command data supplied from the outside, a portable electronic device The present invention relates to a file selection method and a host device.

[0002]

2. Description of the Related Art In recent years, as a portable electronic device, a rewritable nonvolatile data memory and a CPU (Central Processing Unit) for controlling the rewritable nonvolatile data memory have been provided to input / output data from the outside. I with means
So-called IC cards with built-in C chips have been developed in various industrial fields.

Compared with the conventional magnetic cards, the magnetic card had to hold the number of sheets corresponding to each application, but the IC card has an advantage that it can hold a plurality of application programs. is there. That is, an IC card used in a bank, a personal ID card in a sports or leisure facility, a prepaid card in a game hall such as a pachinko machine, or the like can be realized by the same IC card.

This type of IC card is disclosed, for example, in Japanese Patent Laid-Open No.
As described in Japanese Patent Laid-Open No. 224047, data and the like necessary for operating a use application are stored in a built-in data memory in a file format, and each file corresponds to each of a plurality of applications. By inputting an application identification name or the like from an external device, only the corresponding file can be selectively used for each file.

[0005]

However, in the conventional technique as described above, when an IC card whose application identification name is already known is used,
It is possible to select an application to be used by using the entire application identification name. On the other hand,
When using an IC card in which it is unknown what kind of application is stored, there is a problem that the application identification name cannot be known, the application cannot be selected, or it takes time to select the application.

The present invention has been made in view of the above points, and it is possible to shorten the processing time required for selecting a file used even if the identification information used when selecting a file is not completely known. Another object of the present invention is to provide a portable electronic device, a file selection method for the portable electronic device, and a host device.

[0007]

In order to achieve the above object, a portable electronic device of the present invention has a plurality of files, and at least identification information corresponding to each file and information indicating a priority order. Storage means for storing, reception means for receiving instruction data for selecting a file by externally designating a part of the identification information of the file stored in the storage means, and identification of the file by the reception means. When the command data instructing the selection of the file is received by designating a part of the information, the identification having the part that matches the part of the identification information of the file designated by the received command data from the storage means is performed. Detecting means for detecting a file corresponding to the information, and reading information indicating the above-mentioned priority order from the files detected by the detecting means Characterized in that it has a selection means for selecting a file in accordance with the information, and output means for outputting information about the file selected by the selection means to the outside. In order to achieve the above object, the file selection method for a portable electronic device of the present invention comprises a plurality of files, and has storage means for storing at least identification information and priority information for each file, In the file selection method of the portable electronic device that executes the file selection process when receiving the command data instructing the file selection from the external device, a part of the identification information of the file stored in the storage means is designated from the outside. When the command data for instructing the selection of the file is received by doing so, the file corresponding to the identification information having the part matching the part of the identification information of the file designated by the received command data is detected from the storage means. Step, and information indicating the priority order is read out from the files detected by this detection step, and the information is read according to the information. Selecting a file Te, characterized in that a step of outputting information about the file selected in the selection step to the outside. In order to achieve the above object, a host device of the present invention has a plurality of files, and a portable electronic device having a storage means for storing at least identification information corresponding to each file and information indicating a priority order. In a higher-level device that instructs a predetermined process by communicating, priority is given to the file from among files including a part of the identification information of the file of the IC card and having a part of the identification information of the file. Transmission means for transmitting command data for instructing to select a file according to the information indicating the order to the IC card, and a response including file identification information corresponding to the command data transmitted from the outside by the transmission means. And a receiving means for receiving data.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a diagram for explaining the configuration of an IC card system using the IC card 1 as the portable electronic device according to the present invention.

As shown in FIG. 2, an IC card system using the IC card 1 further includes a personal computer (PC) 3 as a host device and a reader / writer 4 as a terminal device connected to the personal computer 3.
And is configured to connect to an external information center 2 using a public communication network 1 such as the Internet, a public telephone network, and ISDN via the PC 3.

The PC 3 has a CPU (central processing unit) 7a as a calculation unit 7 and a memory 7b as a main storage device. Further, the PC 3 has a display 5 as a display device, a keyboard 6 as an input device, and an HDD (hard disk drive) 8 as an auxiliary storage device.

The display 5 informs the operator of operating procedures and operating states. The keyboard 6 is operated and input by an operator. Also HD
Electronic data files 1,2, which are confidential information in D8
, Etc. are stored, and various data exchanges are performed between the PC 3 and the IC card 1 via the reader / writer 4.

The reader / writer 4 is an internal memory (not shown),
It has a transmission means and the like, and reads and writes (transmits and receives) a message to and from the IC card 1 by contact or non-contact. When the contact type IC card is used, an IC card insertion portion (not shown) for inserting the contact type IC card is provided in the reader / writer 4, and when the wireless type IC card is used, the reader / writer 4 and A communication unit (not shown) for communicating with the wireless IC card is provided.

FIG. 3 is a schematic control block diagram of the IC card 1 which constitutes the IC card system of FIG. As shown in FIG. 3, a magnetic stripe portion 11 provided on the surface of the card, a receiving unit for exchanging signals with the reader / writer 4, a communication unit 19 as an output unit, and one (or a plurality of) IC chips 20 are provided. It consists of

In the case of the wireless IC card 1, the communication section 19 is configured as an antenna section so as to receive the modulated wave transmitted from the reader / writer 4 in a non-contact manner or to transmit the modulated wave to the outside. There is. Further, a power supply and a clock for supplying the internal circuit with the modulated wave received by the antenna unit 19 are generated. Contact IC
In the case of the card 1, it is configured as a contact part, and a power source and a clock are obtained by contacting with an IC card terminal part (not shown) provided in the reader / writer 4.

The IC chip 20 is a CP as a control means.
U (Central Processing Unit) 15,
It is composed of a data memory 16 as various storage units, a working memory 17, and a program memory 18, and is embedded in the IC card main body in a state of being connected to the communication unit 19.

The CPU 15 is a control unit for executing various kinds of judgment processing / judgment processing and data processing such as writing to and reading from the memory, as well as executing processing for selecting a file which will be described later, which is the point of the present embodiment.

The program memory 18 is, for example, a mask R.
It is composed of a non-rewritable fixed memory such as an OM (read only memory) and stores a control program of the CPU 15 having a subroutine for realizing each of the basic functions described above.

The data memory 16 is used for storing various data such as application data, and is, for example, EEPR.
It is composed of an erasable (rewritable) non-volatile memory such as an OM (electrically erasable and programmable read only memory).

The working memory 17 is a working memory for temporarily holding processing data when the CPU 15 performs processing, and is constituted by a volatile memory such as a RAM (random access memory). There is. still,
Examples of applications registered in the IC card 1 include a credit card, an ID card, and a point system.

As shown in a conceptual diagram in FIG. 4, the data memory 16 stores information regarding a plurality of applications in a file structure. As shown in FIG. 4, this file structure is a directory tree structure having various folder types based on ISO / IEC7816-4, and a plurality of applications can be registered.

The highest level is MF (Master File)
In step 21, DF (Dedicated File) 2 is set as the next folder to be set for each application.
There are 3, 26, 27, 28, 29, and the lowest level is EF (Elementary File) 24, 2 used for storing user data actually used in the application.
It has a structure of 5.

Further, in the next level of the MF 21, the key EF used for storing the key for establishing the access right.
22 is provided, and as many DFs as the number of installed applications are provided.

In the present embodiment, the IC card 1 stores two applications for company X and company W as a credit system and three applications for company A, company B, and company F as a point system. There is.

For example, DF1 with the DF name set to credit company X is provided as an application file for credit company X, and DF3 with the DF name set to company W is provided as an application file for credit company W. There is. Under the control of DF1, there are two files EF1-1 and EF1-2 used in the credit X company application.

Further, for example, DF2 having the DF name set as Point B company as the application file for Point B company, and DF4 having the DF name set as Point A company as the application file for Point A company.
However, as an application file for Point F company, DF5 in which the DF name is set to Point F company is provided.

FIG. 5 is a memory map in the data memory 16 based on the file structure example illustrated in FIG. As shown in FIG. 5, the data area 16 has a control area 30, a directory area 40, an area group 50, and an empty area 60.

Then, in the directory area 40, DF1
-Definition information 41 to 49 of DF5, ..., DFn, EF1-1, EF1-2 are stored. Area group 50
A plurality of data areas (data area 52 of EF1-1,
It can have a data area 51 of EF1-2) and a key area (key area 53 of key EF22), and is grouped for each DF.

Definition information 41, 44 to 49 of DF1 to DF5, ..., DFn is information having a format as shown in FIG. That is, the file identifier part 101, DF
Name part 102, access condition part 103, access counter part 104, DF priority part 105, DF unique number 10
6, DF unique information 107, and a file check byte 108.

The file identifier section 101 stores a DF file identifier for identifying the definition information of this DF. The DF name section 102 stores a DF name as identification information added to identify the main DF.

The access condition section 103 stores a matching condition essential for accessing this DF. The access counter unit 104 stores the number of times the DF has been accessed. The DF priority order section 105 stores information indicating a preset priority order among a plurality of DFs.

The DF unique number 106 stores the creation number (unique for each DF) of the file created / appended inside the card when creating the DF. The DF specific information 107 is the DF
Stores unique information for each. The file check byte unit 108 stores a file check byte for checking the validity of all these data.

Definition information 42 of EF1-1 and EF1-2,
Reference numeral 43 is information having a format as shown in FIG. That is, the file identifier section 201 and the DF unique number section 2
02, EF-ID section 203, size section 204, data area start address section 205, access condition section 206, and file check byte section 207.

The file identifier section 201 stores an EF file identifier for identifying that it is the definition information of this EF. The DF unique number section 202 stores the DF unique number of the DF to which this EF belongs. EF-ID
The unit 203 stores an EF-ID as identification information added to identify the main EF. Size section 204
Stores the size information of this EF.

The data area start address section 205 stores the start address of the data area. The access condition section 206 stores a matching condition that is essential when accessing this EF. File check byte part 207
Stores a file check byte for checking the validity of all these data.

Further, in the present embodiment, when a plurality of applications of the same series (for example, credit series, point series, etc.) are stored, priorities are preset among the applications of the same series, and the order of priority is prioritized. It is stored in the DF priority order unit 105 as information indicating the order.

For example, the priority portion 105 of the definition information 41 for the credit W company application (DF3) is set to "1" among a plurality of credit type applications, and the credit X company application (DF1) definition information is set. The priority order section 105 of 45 is set to "2", and the application for the credit W company is set to a higher priority order.

Further, between a plurality of point-based applications, the priority order portion 105 of the definition information 44 of the application for point B company (DF2) is "1".
Is set, and the application for point A company (DF
4) the priority order section 105 of the definition information 46 is set to "3", and the priority order section 105 of the definition information 47 of the application for point F company (DF5) is set to "2". The application for point B company has the highest priority, followed by F company and A company.

Further, in the present embodiment, the CPU 15 counts the number of times of access to the DF, and the number of times data is stored in the access counter section 104 of the definition information of the DF.

For example, at present, the access counter section 104 of the definition information 41 of the credit X company application (DF1) stores the number of accesses: 25 times, and the credit W company application (DF3).
In the access counter unit 104 of the definition information 45 of No. 5, the number of accesses is stored as 5 times, which indicates that the application for the credit X company was used more frequently.

Further, the access counter section 104 of the definition information 44 of the application (DF2) for point B company.
In the access counter section 104 of the definition information 46 of the application (DF4) for the point A company, the number of accesses is stored as 35 times, and the application for the point F company (DF5) is stored. ) Definition information 47 access counter section 104
The number of accesses is stored as 90 times. That is,
It can be seen that the application for point F was used most frequently, followed by that of company B and company A were frequently used. Such frequency can be used as information indicating the priority order.

When the file of the IC card 1 is accessed from the outside, the working memory 17
8, a status flag 60 indicating that the access right has been established, information regarding the definition information of the current DF for which the access right has been established and selected is the current DF definition information: file identifier 61, Current D
F definition information: DF name 62, current DF definition information: access condition 63, current DF definition information: access counter 64, current DF definition information: priority 65, current DF definition information: DF unique number 66, current DF definition information: DF specific information 67 and current DF definition information:
It is stored in the command counter 68, respectively.

These current DF definition information 60-68
Is stored from the access target DF definition information in the directory 40 of the data memory 16 when the IC card 1 is accessed from the outside.

Here, the access counter 64 shown in FIG.
Update of will be described with reference to FIG. IC card 1
Receives a command from the outside (S201), and if the received command is a DF selection command (S2)
02), a DF is selected by the selection method described later, and the definition information of the selected DF is stored in the working memory 17
To the current DF definition information 60 to 68 of
After 00, the process proceeds to a command standby state (S203).

In S201, the IC card 1 is externally DF
When a command other than the selection command is received (S202
No), the current DF definition information of the working memory 17: the value of the command counter 68 is incremented by "1" (S204).

At this time, if "1" is stored in the current DF definition information: command counter 68 (S
(YES of 205), it is determined that the access was made first,
Current DF definition information of working memory 17: The value of the access counter 64 is incremented by "1" (S206).

After the processing of the received command is executed after the increment of S206 and the processing is normally completed, the IC card 1 sets the current DF definition information of the working memory 17: the value of the access counter 64 to the DF definition of the data memory 16. The information is written in the access counter unit 104, and the state is set to the next command standby state in S200.

As a result of S205, the current DF definition information:
If the value of the command counter 68 is not "1",
It is determined that the access is already in progress, and the value of the current DF definition information: access counter section 64 remains unchanged from the current data, the processing of the received command is executed, and the state becomes the next command standby state of S200 (S208).

FIG. 10 is a view for explaining the structure of command data (DF selection command) for instructing the selection of the DF supplied from the reader / writer 4 to the IC card 1. The DF selection command has a command header section 30.
1 and a data section 307. The CPU 15 of the IC card 1 uses the data section 3 of this DF selection command.
The directory 40 is searched by the DF name included in 07, the specified DF is searched and selected.

Command header part 3 of the DF selection command
01 is a command classification (CLA: class) 30
2, instruction (INS) 303,
The data length (L) of the parameter data (P1, P2) 304, 305 and the associated data part (for example, DF name) 307
c) 306.

The parameter data P1 is stored in the data section 307.
It shows what selection method is to be executed using the DF name set to. That is, as shown in FIG. 11, when "00" is set in the parameter data P1, D
The selection method for designating a DF using the entire F name is shown. In this case, the entire DF name is set in the data section 307.

When the parameter data P1 is set to a value other than "00", a part of the DF name is used to select the DF from the DF having the DF name including the part of the DF name in a predetermined order. The partial DF selection method for selection is shown.

The parameter data P2 indicates whether to output information regarding the selected DF. In the present embodiment, when the parameter data P1 is set to "00" and the selection method designating all DF names is instructed, the DF
Name 307 includes the entire DF name (for example, “Credit W Company”,
"Credit X", "Point A", "Point B"
"Company", "Point Company F", etc.) are set, and the desired DF can be directly specified. Therefore, no output of DF information is set in the parameter data P2.

When the parameter data P1 is set to a value other than "00" and the partial DF selection method is instructed, a part of the DF name (for example, "credit" or "point") is written in the data portion 307 of the DF selection command. Etc.) will be set, and the DF that has a part of the specified DF name
Is a selection method of selecting in a predetermined order. In this case, the parameter data P2 is set to output information regarding the selected DF as described later.

In this embodiment, as shown in FIG.
When the parameter data P1 is "01", the information indicating the priority order is the order in which the DF was created, and indicates the "partial selection method based on the creation order" selected according to the information. When the parameter data P1 is "02", the information indicating the priority order is the access count for each DF, and indicates the "partial selection method based on the access count" selected according to the information. When the parameter data P1 is "03", the information indicating the priority order is the priority order set in advance in the DF, and indicates the "partial selection method based on the priority order" selected according to the information.

FIG. 12 is a diagram for explaining the structure of the response data that the IC card 1 outputs to the reader / writer 4 after executing the DF selection command from the reader / writer 4. The response data has two formats depending on the content of the parameter data P2 of the DF selection command.

In FIG. 12A, the parameter data P2 is D.
This is an output format when it is specified that F information is output. DF name and D for the DF selected by the CPU 15
It is composed of a DF name section 401 for setting F unique information, a DF unique information section 402, and a status code section 403 for setting a status code indicating a processing result.

In FIG. 12B, parameter data P2 is D.
It is an output format when it is designated that no F information is output, and is composed of only a status code section 404 for setting a status code indicating a processing result.

Particularly, in the case of the DF selection method using the partial DF selection command, there is a possibility that the DF to be used may not be selected by executing the partial DF selection command once. In this embodiment, the IC card 1 is stored in the working memory 17 as shown in FIG.
Counter units 71 and 7 indicating whether it is an F selection command
Holds 2,73.

That is, the partial DF based on the DF creation order
A creation order partial DF selection command counter 71 that indicates the number of times the selection command has been continuously received, and an access number order partial DF selection command counter 72 that indicates the number of times that the partial DF selection command based on the access number has been continuously received. , Partial D based on priority
And a priority partial DF selection command counter 73 indicating the number of times the F selection command has been continuously received.

Further, as shown in FIG. 14, the first and second times are stored in the working memory 17 of the IC card 1 of this embodiment so as not to select the same DF when the same partial DF is selected successively. , ... The DF name selected in the DF selection processing is selected for the n-th selection DF unit 81, 82, 83,
Store in.

(DF Creation Order Partial DF Selection Method) From the above configuration, referring to FIG. 1, FIG. 15 and FIG.
Partial D based on the order of creation in the C card system
The processing operation of the F selection command will be described. As shown in FIG. 15, the user instructs the reader / writer 4 to “point inquiries in the DF creation order” using the PC 3 (S11).

Then, the reader / writer 4 sets "01" in the parameter data P1, "output DF information" in the parameter data P2, and sets "point" which is a part of the DF name in the data part 307 in the DF creation order. The first DF selection command instructing the selection method is transmitted to the IC card 1 (S12).

When the CPU 15 of the IC card 1 determines that the received command is the partial DF selection command instructing the selection method of the DF creation order based on the command header 301, as shown in FIG. The current DF definition information 17 is saved in another area and then cleared (S100). Then, the process proceeds to the flowchart shown in FIG. 16 (S101), and the definition information registered in the directory 40 of the data memory 16 is read (S402).

Whether or not the definition information is the DF definition information is confirmed based on the DF file identifier and the EF file identifier of the file identifier parts 101 and 201 of the definition information read in S402 (S403). The definition information is D in S403.
When it is confirmed that the DF name is the F definition information, it is determined whether the DF name of the DF definition information matches the DF name of the data section 307 specified by the partial DF selection command (S4).
04). If it is determined in S403 that the DF definition information is not found, or if the DF names do not match in S404, the process proceeds to S409.

If the DF names match in S404, the current DF definition information in the working memory 17: DF name 6
2 is confirmed (S405), and if the DF name does not exist, it is confirmed whether it is the first file creation order partial DF command based on the creation order partial DF selection command counter 71 shown in FIG. 13 (S406). ).

When the creation order partial DF selection command counter 71 is "0", it is determined in S406 that the file creation order partial DF command is the first time, and the current DF definition information 61 to 68 in the working memory 17 is set in S404. The DF definition information determined to match is written (S408), and the process proceeds to S409.

If there is the next definition information to be read in the data memory 16 in S409, the process returns to S402. Then, the next definition information is read from the directory 40 of the data memory 16 (S402), the DF definition information is confirmed (S403), and the DF name coincidence is determined (S40).
4) If it is determined that the DF name exists in the current DF definition information 62 (S405), the CPU1 of the IC card 1
5 is the current DF stored in the working memory 17
Definition information: File creation order of file unique number 66,
It is compared with the file creation order of the file unique number section 106 of the DF definition information determined to match in S404 (S).
410).

As a result of the comparison in S410, if the current DF definition information in the working memory 17: the file unique number 66 is created earlier, the current DF definition information 61 to 68 stored in the working memory 17 remains unchanged. In this state, the process proceeds to S409.

As a result of the comparison in S410, the file unique number part 10 of the DF definition information determined to match in S404.
If the file creation order of 6 is earlier, S404 is added to the current DF definition information 61 to 68 of the working memory 17.
Write the DF definition information determined to match in S40 (S40
8) and proceeds to S409.

If there is the next definition information to be read in the data memory 16 in S409, the process returns to S402 again. S
If the current DF definition information 61 to 68 is stored in the working memory 17 at the time when all the definition information of the directory 40 of the data memory 16 is read in 409 (S
411), the current DF definition information of the working memory 17: the DF name stored in the DF name 62, the first selection D
Store in F81. Further, the value of the creation order partial DF selection command counter 71 is incremented by "1" (S412).

When the writing in S412 is completed, the current DF definition information stored in the working memory 17: DF
Name 62 and current DF definition information: DF specific information 67,
DF name part 401, D of the format shown in FIG.
It is set in the F unique information section 402 and is output to the outside as a response (S413).

Further, the directory 4 of the data memory 16
When all the definition information of 0 is read (S409), the current DF definition information 61 to 68 is stored in the working memory 17.
Is not stored (S411), the current DF definition information 61 to 68 in the working memory 17 is set to S100.
Return to the original current DF definition information saved in (S41
4), the error response is output to the outside, and the processing of the partial DF selection command ends (S415).

Thus, in the case of this embodiment, D
As a result of the processing execution of the partial DF selection command in the F creation order, the DF name that includes “point” in the DF name in the data memory 16 of the IC card 1 has a DF name of point B.
Company DF2 and DF name is Point A Company DF4
And DF5 whose DF name is Point F Company corresponds.

The order in which the DF was created (DF2
⇒ DF4 ⇒ DF5), the first DF selection command selects DF2 “Company B” (S
13), as a response to the reader / writer 4 shown in FIG.
The DF name "Point Company B" is output in the format shown in (a) (S14).

In the PC 3, via the reader / writer 4, I
DF name of DF selected by C Card 1 "Point B Company"
Is displayed on the screen (S15, S16). Here, if it is not the application desired by the user, a reply indicating that the application selected via the PC 3 is different is sent to the reader / writer 4 (ST17).

Upon receipt of the response from ST17, the reader / writer 4
Indicates to the IC card that the parameter data P1 is "0".
1 "," output DF information "to the parameter data P2,
A DF selection command for the second DF creation order in which "point" which is a part of the DF name is set is transmitted to the data part 307 (S18).

The CPU 15 of the IC card 1 sends the received command to the DF based on the command header 301.
When it is determined that the partial DF selection command is an instruction to select the creation order, the current DF definition information in the working memory 17 is saved in another area and then cleared (S100), as shown in FIG. Then, the process proceeds to the flowchart shown in FIG. 16 (S101), and the definition information registered in the data memory 16 is read (S4).
02).

Whether or not the definition information is the DF definition information is confirmed based on the DF file identifier and the EF file identifier of the file identifier parts 101 and 201 of the definition information read in S402 (S403). The definition information is D in S403.
When it is confirmed that the DF name is the F definition information, it is determined whether the DF name of the DF definition information matches the DF name of the data section 307 specified by the partial DF selection command (S4).
04). If it is determined in S403 that the DF definition information is not found, or if the DF names do not match in S404, the process proceeds to S409.

If the DF names match in S404, the current DF definition information in the working memory 17: DF name 6
2 is confirmed (S405), and if it is determined that the DF name exists, the CPU 15 of the IC card 1 stores the current DF definition information stored in the working memory 17: the file creation order of the file unique number 66, and S404. File unique number part 10 of DF definition information determined to match in
The file creation order of No. 6 is compared (S410).

As a result of the comparison in S410, if the current DF definition information in the working memory 17: the file unique number 66 is created earlier, the current DF definition information 61 to 68 stored in the working memory 17 remains unchanged. In this state, the process proceeds to S409.

As a result of the comparison in S410, the file unique number part 10 of the DF definition information determined to match in S404.
If the file creation order of 6 is earlier, or S405
If it is determined that the DF name does not exist in FIG.
Creation order partial DF selection command counter 7 shown in 3
Based on 1, it is confirmed whether it is the first file creation order partial DF command (S406).

When the creation order partial DF selection command counter 71 is "1", it is the second file creation order partial DF selection command in S406 (the first file creation order partial DF selection command has already been completed). ), And then the first DF shown in FIG.
It is confirmed whether the DF is already selected by comparing with the first selected DF 81 selected in the selection processing (S40).
7).

If it is determined in S407 that it is not the same as the first selected DF 81, the DF definition information determined to match in S404 is written in the current DF definition information 61 to 68 of the working memory 17 (S408), and the flow proceeds to S409. move on. If it is determined in S407 that it is the same as the first selection DF81, the process proceeds to S409.

If there is the next definition information to be read in the data memory 16 in S409, the process returns to S402. S40
If the current DF definition information 61 to 68 is stored in the working memory 17 at the time when all the definition information of the directory 40 of the data memory 16 is read in S9 (S41).
1), current DF definition information of working memory 17:
The DF name stored in the DF name 62 is changed to the second selection DF8.
Store in 2. Further, the value of the creation order partial DF selection command counter 71 is incremented by "1" to "2" (S412).

When the writing in S412 is completed, the current DF definition information stored in the working memory 17: DF
Name 62 and current DF name definition information: DF unique information 67
Is the DF name part 40 of the format shown in FIG.
1, set in the DF unique information section 402, and output to the outside as a response (S413).

Further, the directory 4 of the data memory 16
When all the definition information of 0 is read (S409), the current DF definition information 61 to 68 is stored in the working memory 17.
Is not stored (S411), the current DF definition information 61 to 68 in the working memory 17 is set to S100.
Return to the original current DF definition information saved in (S41
4), the error response is output to the outside, and the processing of the partial DF selection command ends (S415).

Thus, in the case of this embodiment, I
As a result of the second DF selection command executed by the CPU 15 of the C card 1 for the second DF selection command, the second DF selection command DF4 “Point A Company” is selected (S19), and the reader As a response to the writer 4, the DF name “Point A” is displayed in the format shown in FIG.
"Company" is output (S20).

In the PC 3, via the reader / writer 4, I
DF name of DF selected by C card 1 "Company A"
Is displayed on the screen (S21, S22). If the application is not the one desired by the user, a reply indicating that the application selected via the PC 3 is different is sent to the reader / writer 4 (ST23).

In response to the response from ST23, the reader / writer 4
Indicates to the IC card that the parameter data P1 is "0".
1 "," output DF information "to the parameter data P2,
A DF selection command for the third DF creation order in which "point" which is a part of the DF name is set is transmitted to the data section 307 (S24).

The CPU 15 of the IC card 1 sends the received command to the DF based on the command header 301.
When it is determined that the partial DF selection command is an instruction to select the creation order, the current DF definition information in the working memory 17 is saved in another area and then cleared (S100), as shown in FIG. Then, the process proceeds to the flowchart shown in FIG. 16 (S101), and the definition information registered in the data memory 16 is read (S4).
02).

Whether or not the definition information is the DF definition information is confirmed based on the DF file identifier and the EF file identifier of the file identifier parts 101 and 201 of the definition information read in S402 (S403). The definition information is D in S403.
When it is confirmed that the DF name is the F definition information, it is determined whether the DF name of the DF definition information matches the DF name of the data section 307 specified by the partial DF selection command (S4).
04). If it is determined in S403 that the DF definition information is not found, or if the DF names do not match in S404, the process proceeds to S409.

If the DF names match in S404, the current DF definition information in the working memory 17: DF name 6
2 is confirmed (S405), and if it is determined that the DF name exists, the CPU 15 of the IC card 1 stores the current DF definition information stored in the working memory 17: the file creation order of the file unique number 66, and S404. File unique number part 10 of DF definition information determined to match in
The file creation order of No. 6 is compared (S410).

As a result of the comparison in S410, when the current DF definition information in the working memory 17: the file unique number 66 is created earlier, the current DF definition information 61 to 68 stored in the working memory 17 remains unchanged. In this state, the process proceeds to S409.

As a result of the comparison in S410, the file unique number part 10 of the DF definition information determined to match in S404.
If the file creation order of 6 is earlier, or S405
When it is determined that the DF name does not exist in FIG.
Creation order partial DF selection command counter 71 shown in
Based on the above, it is confirmed whether it is the first file creation order partial DF command (S406).

When the creation order partial DF selection command counter 71 is "2", the file creation order partial DF command is the third time in S406 (the second file creation order partial DF command is already completed). Judgment, and then the first and second D shown in FIG.
The first selected DF 81 selected in the F selection process and the second selected DF 82 are respectively compared, and the already selected DF
Is confirmed (S407).

If it is determined in S407 that the first selection DF81 and the second selection DF82 are not the same, S is added to the current DF definition information 61 to 68 in the working memory 17.
The DF definition information determined to match in 404 is written (S408), and the process proceeds to S409. If it is determined in S407 that it is the same as the first selection DF81 or the second selection DF82, the process proceeds to S409.

If there is the next definition information to be read in the data memory 16 in S409, the process returns to S402. S40
If the current DF definition information 61 to 68 is stored in the working memory 17 at the time when all the definition information of the directory 40 of the data memory 16 is read in S9 (S41).
1), current DF definition information of working memory 17:
The DF name stored in the DF name 62 is selected as the third selected DF8.
Store in 3. Further, the value of the creation order partial DF selection command counter 71 is incremented by "1" to "3" (S412).

When the writing in S412 is completed, the current DF definition information stored in the working memory 17: DF
Name 62 and current DF definition information: DF specific information 67,
DF name part 401, D of the format shown in FIG.
It is set in the F unique information section 402 and is output to the outside as a response (S413).

In addition, the directory 4 of the data memory 16
When all the definition information of 0 is read (S409), the current DF definition information 61 to 68 is stored in the working memory 17.
Is not stored (S411), the current DF definition information 61 to 68 in the working memory 17 is set to S100.
Return to the original current DF definition information saved in (S41
4), the error response is output to the outside, and the processing of the partial DF selection command ends (S415).

Thus, in the case of this embodiment, I
As a result of the third DF selection command executed by the CPU 15 of the C card 1 as a result of the third DF selection command, the third DF5 DF5 "Point F Company" is selected (S25), and the reader As a response to the writer 4, the DF name “point F” is written in the format shown in FIG.
"Company" is output (S26).

In the PC 3, via the reader / writer 4, I
DF name of DF selected by C card 1 "Point F company"
Is displayed on the screen (S27, S28). If the application is the one desired by the user, a reply indicating that the application is the selected application is sent to the reader / writer 4 via the PC 3 and the process proceeds to the next process (S29). .

(Partial DF Selection Method in Access Count Order) Next, with reference to FIGS. 1 and 17, the partial D based on the access count to the DF in the IC card system.
The processing operation of the F selection command will be described. As shown in FIG. 17, the user uses the PC 3 to instruct the reader / writer 4 to perform “point inquiry in the order of the number of accesses” (S31).

Then, the reader / writer 4 accesses the DF in which "02" is set in the parameter data P1, "DF information is output" in the parameter data P2, and "point" which is a part of the DF name is set in the data section 307. The first DF selection command instructing the selection method in the order of the number of times is transmitted to the IC card 1 (S32).

When the CPU 15 of the IC card 1 receives the command, the partial D instructing the selection method in the order of the number of times the DF is accessed based on the command header 301.
When it is determined that the command is the F selection command, as shown in FIG. 1, the current DF definition information in the working memory 17 is saved in another area and then cleared (S100, S10).
1).

Then, the CPU 15 uses the data memory 16
The definition information registered in is read (S102). When instructing another selection method, for example, the process proceeds to the flowchart shown in FIG. 16 or 18.

Whether or not the definition information is the DF definition information is confirmed based on the DF file identifier and the EF file identifier of the file identifier portions 101 and 201 of the definition information read in S102 (S103). Definition information is D in S103
When it is confirmed that the DF name is the F definition information, it is determined whether the DF name of the DF definition information matches the DF name of the data section 307 specified by the partial DF selection command (S1).
04). When it is determined in S103 that the DF name is not the DF definition information, or when the DF names do not match in S104, the process proceeds to S109.

When the DF names match in S104, the current DF definition information of the working memory 17: DF name 6
2 is confirmed (S105), and if the DF name does not exist, it is confirmed whether the DF name is the first access count partial DF command based on the access count partial DF selection command counter 72 shown in FIG. 13 ( S10
6).

When the access count partial DF selection command counter 72 is "0", it is determined in S106 that the access count partial DF command is the first access count partial DF command, and the current DF definition information 61 in the working memory 17 is determined.
˜68, the DF definition information determined to match in S104 is written (S108), and the process proceeds to S109.

If there is the next definition information to be read in the data memory 16 in S109, the process returns to S102. Then, the next definition information is read from the directory 40 of the data memory 16 (S102), the DF definition information is confirmed (S103), and the DF name coincidence is determined (S10).
4) If it is determined that the DF name exists in the current DF definition information 62 (S105), the CPU1 of the IC card 1
5 is the current DF stored in the working memory 17
Definition information: access count of access counter 64 and S
The DF definition information determined to match in 104 is compared with the access count of the access counter unit 104 (S11).
0).

As a result of the comparison in S110, if the current DF definition information of the working memory 17: access counter 64 has the greater number of accesses, the working memory 1
With the current DF definition information 61 to 68 stored in No. 7 as it is, the process proceeds to S109.

As a result of the comparison in S110, the access counter unit 10 of the DF definition information determined to match in S104.
When the access count of 4 is greater, the access count order partial DF selection command counter 72 shown in FIG.
Based on the above, it is confirmed whether the partial DF command is the first access count order partial S command (S106).

When the access count order partial DF selection command counter 72 is "0", it is determined in S106 that the access count order partial DF selection command is the first access count order partial DF selection command, and the current DF definition information 61 to 68 in the working memory 17 is stored. The DF definition information determined to match in S104 is written (S108), and the process proceeds to S109.

In the processing of the access count order partial DF selection command from the second time onward, in step S106, the access count order partial DF selection command counter 72 is executed.
Is greater than or equal to “1”, it is determined that the partial access DF command is the second-time or subsequent access-number-order partial DF command.
, The first selection DF81, the second selection DF82 selected in the first, second, ... DF selection processing
It is confirmed whether the DF is already selected by comparing with (S107).

Then, in S107, the selected DFs 81, 82,
If it is determined that the working memory 1 is not the same as ...
The DF definition information determined to match in S104 is written into the current DF definition information 61 to 68 of S7 (S108),
It proceeds to S109. Selected in S107 DF81, 82, ...
If it is determined that the same as, the process proceeds to S109.

If there is the next definition information to be read in the data memory 16 in S109, the process returns to S102. S10
If the current DF definition information 61 to 68 is stored in the working memory 17 at the time when all the definition information of the directory 40 of the data memory 16 is read in 9 (S11
1), current DF definition information of working memory 17:
The DF name stored in the DF name 62 is stored in the corresponding selected DFs 81, 82, ... Of FIG. Also, the value of the access count order partial DF selection command counter 72 is incremented by "1" (S112).

When the writing in S112 is completed, the current DF definition information stored in the working memory 17: DF
Name 62 and current DF definition information: DF specific information 67,
DF name part 401, D of the format shown in FIG.
It is set in the F unique information section 402 and is output to the outside as a response (S113).

Further, the directory 4 of the data memory 16
When all the definition information of 0 is read (S109), the current DF definition information 61 to 68 is stored in the working memory 17.
Is not stored (S111), the current DF definition information 61 to 68 in the working memory 17 is set to S100.
Return to the original current DF definition information saved in (S11
4), the error response is output to the outside, and the processing of the partial DF selection command is finished (S115).

In this way, in the case of the present embodiment, as a result of executing the processing of the partial DF selection command in the order of the number of accesses, in the data memory 16 of the IC card 1, the DF including "point" in the DF name is included. The names correspond to DF2 whose DF name is Point B Company, DF4 whose DF name is Point A Company, and DF5 whose DF name is Point F Company.

In the order of increasing number of accesses to DF (DF5⇒DF2⇒DF4), the first D
In the F selection command, DF5 “Point F Company” is selected (S33), and the response to the reader / writer 4 is the DF name “Point F” in the format shown in FIG.
"Company" is output (S34).

In the PC 3, via the reader / writer 4, I
DF name of DF selected by C card 1 "Point F company"
Is displayed on the screen (S35, S36). Here, in the case of the application desired by the user, a reply indicating that it is the selected application is sent via the PC 3 to the reader / writer 4, and the process proceeds to the next process (S37). .

In the present embodiment, when a desired application is selected from a plurality of applications in the same series and the DF name is unknown, the application with the highest access frequency is selected in order. It has become. Therefore, by selecting the DF in the order of the application most likely to be accessed by the user, that is, the application most frequently accessed so far, the user can more quickly select the desired application. It becomes possible.

(Priority Partial DF Selection Method) Next,
The processing operation of the partial DF selection command based on the priority order of DFs in the IC card system will be described with reference to FIGS. 1, 18 and 19. As shown in FIG. 18, the user instructs the reader / writer 4 to perform “point inquiry in order of priority” using the PC 3 (S4).
1).

Then, the reader / writer 4 sends "03" to the parameter data P1, "output DF information" to the parameter data P2, and D to the data section 307 for the IC card.
The first DF selection command instructing the selection method according to the priority order to the DF set with "credit" which is a part of the F name is transmitted (S42).

In the CPU 15 of the IC card 1, the received command is a partial DF in which a selection method is instructed based on the command header 301 in accordance with the priority order of the DF.
When it is determined that the command is a selection command, as shown in FIG.
The current DF definition information in the working memory 17 is saved in another area and then cleared (S100). And
19, the definition information registered in the directory 40 of the data memory 16 is read (S302).

Whether the definition information is the DF definition information is confirmed based on the DF file identifier and the EF file identifier of the file identifier sections 101 and 201 of the definition information read in S302 (S303). Definition information is D in S303
When it is confirmed that the DF name is the F definition information, it is determined whether the DF name of this DF definition information matches the DF name of the data section 307 specified by the partial DF selection command (S3).
04). If it is determined in S303 that the DF name is not the DF definition information, or if the DF names do not match in S304, the process proceeds to S309.

If the DF names match in S304, the current DF definition information in the working memory 17: DF name 6
2 is confirmed (S305), and if the DF name does not exist, it is confirmed whether it is the first priority partial DF command based on the priority partial DF selection command counter 73 shown in FIG. 13 (S306). .

When the priority partial DF selection command counter 73 is "0", it is determined in S306 that it is the first priority partial DF command, and S304 is added to the current DF definition information 61 to 68 of the working memory 17.
Write the DF definition information determined to match in S30 (S30
8) and proceeds to S309.

If there is the next definition information to be read in the data memory 16 in S309, the process returns to S302. Then, the next definition information is read from the directory 40 of the data memory 16 (S302), the DF definition information is confirmed (S303), and the DF name coincidence is determined (S30).
4) If it is determined that the DF name exists in the current DF definition information 62 (S305), the CPU1 of the IC card 1
5 is the current DF stored in the working memory 17
Definition information: DF priority portion 105 of the DF definition information, which is determined to match the priority of priority 65 and S304.
(S310).

As a result of the comparison in S310, if the priority of the current DF definition information of the working memory 17: priority 65 is higher, the current DF definition information 61 to 68 stored in the working memory 17 remains unchanged. Then, the process proceeds to S309.

As a result of the comparison in S310, if the priority of the DF definition information which is determined to match in S304 is higher in the priority section 105, the current DF definition information 61 to 68 in the working memory 17 is added to S304 in S304. The DF definition information determined to match is written (S308), S309.
Go to.

If there is the next definition information to be read in the data memory 16 in S309, the process returns to S302 again. S
If the current memory DF definition information 61 to 68 is stored in the working memory 17 at the time when all the definition information of the directory 40 of the data memory 16 is read in 309 (S
311), the current DF definition information of the working memory 17: the DF name stored in the DF name 62, the first selection D
Store in F81. Also, the value of the priority partial DF selection command counter 73 is incremented by "1" (S312).

When the writing in S312 is completed, the current DF definition information stored in the working memory 17: DF
Name 62 and current DF definition information: DF specific information 67,
DF name part 401, D of the format shown in FIG.
It is set in the F unique information section 402 and is output to the outside as a response (S313).

Further, the directory 4 of the data memory 16
When all the definition information of 0 is read (S309), the current DF definition information 61 to 68 is stored in the working memory 17.
Is not stored (S311), the current DF definition information 61 to 68 in the working memory 17 is set to S100.
Return to the original current DF definition information saved in (S31
4), the error response is output to the outside, and the processing of the partial DF selection command ends (S315).

In this way, in the case of the present embodiment, as a result of executing the processing of the partial DF selection command in the priority order, the DF name including "credit" in the DF name in the data memory 16 of the IC card 1 Corresponds to DF1 whose DF name is Credit X Company and DF3 whose DF name is Credit W Company.

[0135] Among them, in accordance with a preset priority order (DF3 → DF1 order), the priority order 1 is set in the first DF selection command "credit W".
"Company" is selected (S43), and the DF name "Credit W Company" is output to the reader / writer 4 as a response in the format shown in FIG. 12 (a) (S44).

In the PC 3, via the reader / writer 4, I
DF name of DF selected by C card 1 "Credit W
"Company" is displayed on the screen (S45, S46). If it is not the application desired by the user, PC3
A response indicating that the application selected via is different is sent to the reader / writer 4 (ST47).

Upon receipt of the response from ST47, the reader / writer 4
Indicates to the IC card that the parameter data P1 is "0".
3 ”,“ output DF information ”to the parameter data P2,
The DF selection command according to the second priority set with "credit" which is a part of the DF name is transmitted to the data section 307 (S48).

The CPU 15 of the IC card 1 sends the received command to the DF based on the command header 301.
If it is determined that the DF selection command is the instruction method for selecting the priority order of, the current DF definition information of the working memory 17 is saved in another area and then cleared (S100), as shown in FIG. Then, the process proceeds to the flowchart shown in FIG. 19, and the definition information registered in the data memory 16 is read (S302).

Whether the definition information is the DF definition information is confirmed based on the DF file identifier and the EF file identifier of the file identifier parts 101 and 201 of the definition information read in S302 (S303). Definition information is D in S303
When it is confirmed that the DF name is the F definition information, it is determined whether the DF name of this DF definition information matches the DF name of the data section 307 specified by the partial DF selection command (S3).
04). If it is determined in S303 that the DF name is not the DF definition information, or if the DF names do not match in S304, the process proceeds to S309.

If the DF names match in S304, the current DF definition information: DF name of the working memory 17 is confirmed (S305). If it is determined that the DF name exists, the CPU 15 of the IC card 1 The current DF definition information of the working memory 17: The priority order of the priority order 65 is compared with the priority order of the DF priority order section 105 of the DF definition information determined to match in S304 (S31).
0).

As a result of the comparison in S310, when the current DF definition information in the working memory 17: priority 65 is higher, the current DF definition information 61 to 68 stored in the working memory 17 remains unchanged. Then, the process proceeds to S309.

As a result of the comparison in S310, if the DF definition information determined to match in S304 has a higher priority in the DF priority order section 105, or if it is determined in S305 that the DF name does not exist. Then, based on the priority order partial DF selection command counter 73 shown in FIG. 13, it is confirmed whether or not it is the first priority order partial DF selection command (S306).

When the priority partial DF selection command counter 73 is "1", it is determined in step S306 that it is the second priority partial DF command (the first priority partial DF selection command has already been completed). Then
Next, as compared with the first selection DF 81 selected in the first DF selection processing shown in FIG.
It is confirmed whether it is F (S307).

If it is determined in S307 that it is not the same as the first selected DF 81, the DF definition information determined to match in S304 is written in the current DF definition information 61 to 68 of the working memory 17 (S308), and the flow proceeds to S309. move on. If it is determined in S307 that it is the same as the first selection DF81, the process proceeds to S309.

If there is the next definition information to be read in the data memory 16 in S309, the process returns to S302. S30
If the current DF definition information 61 to 68 is stored in the working memory 17 at the time when all the definition information of the directory 40 of the data memory 16 is read in 9 (S31
1), current DF definition information of working memory 17:
The DF name stored in the DF name 62 is changed to the second selection DF8.
Store in 2. Further, the value of the priority partial DF selection command counter 73 is incremented by "1" to "2" (S312).

When the writing in S312 is completed, the current DF definition information stored in the working memory 17: DF
Name 62 and current DF definition information: DF specific information 67,
DF name part 401, D of the format shown in FIG.
It is set in the F unique information section 402 and is output to the outside as a response (S313).

Further, the directory 4 of the data memory 16
When all the definition information of 0 is read (S309), the current DF definition information 61 to 68 is stored in the working memory 17.
Is not stored (S311), the current DF definition information 61 to 68 in the working memory 17 is set to S100.
Return to the original current DF definition information saved in (S31
4), the error response is output to the outside, and the processing of the partial DF selection command ends (S315).

Thus, in the case of this embodiment, I
The CPU 15 of the C card 1 sets the DF according to the second priority.
As a result of processing the selection command, in the second DF selection command, "Credit X Company", which is DF1 with priority 2 set, is selected (S49), and the format shown in FIG. Then, the DF name "Credit X Company" is output (S50).

In the PC 3, via the reader / writer 4, I
DF name of DF selected by C card 1 "Credit X
"Company" is displayed on the screen (S51, S52). Here, in the case of the application desired by the user, a reply indicating that it is the selected application is sent via the PC 3 to the reader / writer 4, and the process proceeds to the next process (S53). .

In the present embodiment, when a desired application is selected from a plurality of applications in the same series and the DF name is unknown, an application having a high priority order is set in accordance with a preset priority order. It is designed to be selected in order from. Therefore,
It is possible to quickly select the DF in the order of creation of the DF later or at least the number of times of access, in order from the application with the highest priority among the installed applications of the same series.

[0151]

As described above, according to the present invention,
Even if the identification information used when selecting a file is not completely grasped, the processing time required for selecting the used file can be shortened.

[Brief description of drawings]

FIG. 1 is an IC card 1 according to a portable electronic device of the present invention.
DF based on the number of access to DF in
The flowchart figure for demonstrating the processing operation of a selection command.

FIG. 2 is an IC using an IC card 1 and a reader / writer 4.
The figure for demonstrating the structure of a card system.

FIG. 3 is a control block diagram of the IC card 1.

FIG. 4 is a conceptual diagram of a file structure when a plurality of applications are configured in the data memory 16.

FIG. 5 is a diagram showing a memory map of a data memory 16.

FIG. 6 is a view for explaining the structure of DF definition information in the data memory 16.

FIG. 7 is a diagram for explaining the configuration of EF definition information in the data memory 16.

FIG. 8 is a diagram showing a configuration of a working memory 17.

FIG. 9 is a flowchart showing a processing operation when a command other than the DF selection command in the IC card 1 is received.

FIG. 10 is a diagram showing a format of a partial DF selection command.

FIG. 11 is a diagram illustrating parameter data P1 indicating an instruction of a method for selecting a DF name.

FIG. 12 is a diagram showing a format of response data output from the IC card 1 in response to a DF selection command.

FIG. 13 is a diagram showing a counter indicating the number of times a partial DF selection command is continuously received.

FIG. 14 is a working memory 1 that stores the selected DF name when the same partial DF selection is continuously performed.
The figure which shows the structure of 7.

FIG. 15 is a diagram for explaining the processing operation of the partial DF selection command based on the file creation order in the IC card system.

16 is a diagram for explaining the processing operation of the partial DF selection command based on the file creation order in the IC card 1. FIG.

FIG. 17 is a diagram for explaining a processing operation of a partial DF selection command based on the number of accesses in the IC card system.

FIG. 18 is a diagram for explaining a processing operation of a partial DF selection command based on a priority order in the IC card system.

FIG. 19 is a flowchart diagram illustrating a processing operation based on a priority order in the IC card 1.

[Explanation of symbols]

1 IC card 4 Reader / Writer 15 CPU 16 data memory (non-volatile memory) 17 Working memory (RAM) 18 Program memory (ROM)

Claims (15)

[Claims] 1. A storage unit that has a plurality of files and stores at least identification information corresponding to each file and information indicating a priority order, and one of the identification information of the files stored in the storage unit from the outside. Receiving means for receiving command data instructing file selection by designating a part, and command data instructing file selection by designating a part of the identification information of the file by the receiving means. A detecting means for detecting a file corresponding to the identification information having a part that coincides with a part of the identification information of the file designated by the received command data from the storage means; The information indicating the above-mentioned priority order is read out from the inside, and a selecting means for selecting a file according to the information, and a selecting means for selecting the file Portable electronic device and having an output means for outputting information to the outside about the file. 2. The portable device according to claim 1, wherein the selecting means reads out information indicating a priority order from the files detected by the detecting means and selects the files in descending order of priority. Electronic device. 3. The storage means stores the number of times of access to each file for each of the files as information indicating the priority order, and the selection means includes the number of access times from the files detected by the detection means. The portable electronic device according to claim 1, wherein files are selected in descending order of the number of files. 4. When command data is received from an external device,
In the portable electronic device that executes the instructed instruction, the portable electronic device has a plurality of files, and a storage unit that stores at least identification information for each file, a creation number indicating the order in which the files were created, and information indicating the priority order. , The command data received from the outside is the command data instructing to select the file based on the file creation order by specifying a part of the identification information of the file, or the file is selected based on the priority order. Determination means for determining whether or not the instruction data is an instruction data for instructing that the file is selected, and instruction data for instructing to select the file based on the order of creation of the file by designating a part of the identification information of the file by the determination means. If it is determined that the file identification information of the file specified by the command data received from the storage means A file corresponding to the identification information having a part that coincides with a part is read, information indicating the creation number is read from the detected file, and the first selecting means for selecting the file according to the information, and the judging means. When it is determined that the command data is an instruction to select a file based on the priority order by designating a part of the identification information of the file, the file designated by the command data received from the storage means is stored. A file corresponding to the identification information having a part that coincides with a part of the identification information, reading the information indicating the priority order from the detected files, and selecting the file according to the information; A mobile phone having output means for outputting information on a file selected by the first or second selection means to the outside. Possible electronic devices. 5. When receiving command data from an external device,
In the portable electronic device that executes the instructed command, the portable electronic device has a plurality of files, and a storage unit that stores at least identification information for each file, a creation number indicating the order in which the files were created, and information indicating the number of accesses. , The command data received from the outside is the command data instructing to select the file based on the file creation order by designating a part of the identification information of the file, or the file is selected based on the access count. Determination means for determining whether or not the instruction data is an instruction data for instructing that the file is selected, and instruction data for instructing to select the file based on the order of creation of the file by designating a part of the identification information of the file by the determination means. If it is determined that the file specified by the command data received from the storage means A file corresponding to the identification information having a portion that coincides with a part of the different information, reading the information indicating the creation number from the detected file, and selecting the file according to the information; When it is determined that the determination data is command data for instructing to select a file based on the access count by designating a part of the identification information of the file,
A file corresponding to the identification information having a part that coincides with a part of the identification information of the file specified by the received command data is read from the storage means, and information indicating the number of times of access is read from the detected file, A portable electronic device comprising: second selecting means for selecting a file according to the information; and output means for outputting information on the file selected by the first or second selecting means to the outside. 6. When receiving command data from an external device,
The portable electronic device that executes the instructed instruction has a plurality of files and stores at least identification information for each file, a creation number indicating the order in which the files were created, the number of times of access, and information indicating the priority order. The storage means and the command data received from the outside are command data for instructing to select the file based on the file creation order by designating a part of the identification information of the file, or based on the access count. Determining means for determining whether the command data is an instruction data for instructing to select a file or an instruction data for instructing to select a file based on priority, and a part of the identification information of the file by the determining means. Command data that instruct to select the file based on the file creation order by specifying If it is determined that the file corresponding to the identification information having a part that coincides with a part of the identification information of the file designated by the received command data from the storage means, the file is created from the detected files. The first selection means for reading the information indicating the number and selecting the file according to the information, and the determination means for designating a part of the identification information of the file to instruct to select the file based on the number of times of access If it is determined to be instruction data,
A file corresponding to the identification information having a part that coincides with a part of the identification information of the file specified by the received command data is read from the storage means, and information indicating the number of times of access is read from the detected file, Second selection means for selecting a file according to the information, and the determination means for determining a part of the identification information of the file to determine that it is command data for instructing to select the file based on the priority order. Then, a file corresponding to the identification information having a part that coincides with a part of the identification information of the file designated by the received command data from the storage means is created, and the information indicating the priority order from the detected files. Reading means for selecting a file according to the information, and the first, second or third selecting means Portable electronic device and having an output means for outputting information about the selected file to the outside. 7. The file selection is performed by the selecting means, and after the processing corresponding to the command data instructing other than the selection of the file received from the outside is executed, the processing target file stored in the storage means is accessed. 7. The portable electronic device according to claim 3, 5 or 6, further comprising adding means for adding information indicating the number of times. 8. A file comprising a plurality of files, having storage means for storing at least identification information and information indicating a priority for each file, and receiving command data for instructing file selection from an external device, the file In the file selection method of the portable electronic device for executing the selection process of step 1, when the instruction data for instructing the selection of the file is received by externally designating a part of the identification information of the file stored in the storage means, A step of detecting a file corresponding to the identification information having a part that coincides with a part of the identification information of the file designated by the received command data from the storage means, and the priority order among the files detected by the detecting step. Reading out the information indicating that the file is selected and selecting the file according to the information. And a step of outputting information regarding the created file to the outside. 9. The file selection is instructed by externally outputting the information regarding the file selected in the output step, and subsequently specifying a part of the identification information of the file stored in the storage means from the outside. Receiving the command data to be detected, the step of detecting a file corresponding to the identification information having a part that matches a part of the identification information of the file designated by the received command data from the storage means; From the selected files, the information indicating the priority order excluding the previously selected file is read, the file is selected according to the information, and the information regarding the file selected in this selection step is output to the outside. 9. The file selection method for a portable electronic device according to claim 8, wherein. 10. The storage means stores the number of times of access to each file for each file as the information indicating the priority, and the selecting step includes the number of access times from the files detected by the detecting step. 9. The file selection method for a portable electronic device according to claim 8, wherein files are selected in descending order of the number of files. 11. A step of receiving command data externally instructing other than file selection after being selected in the selecting step and output in the output step, and instructing other than file selection received in the receiving step. 7. The method according to claim 1, further comprising a step of executing a process corresponding to the instruction data, and a step of adding information indicating the number of times of access of the process target file stored in the storage means after the process is executed by the executing step. 11. The file selection method of the portable electronic device according to 10. 12. The portable device according to claim 8, wherein the selecting step reads information indicating a priority order from the files detected by the detecting step and selects the files in descending order of priority order. Electronic device file selection method. 13. A predetermined process is instructed by communicating with a portable electronic device having a plurality of files and having storage means for storing at least identification information corresponding to each file and information indicating a priority order. In the host device, a file including a part of the identification information of the file of the IC card and having a part of the identification information of the file is selected according to the information indicating the priority order of the file. The instruction data to be instructed is
A host device comprising: a transmitting means for transmitting to the C card; and a receiving means for receiving response data including file identification information corresponding to command data transmitted from the outside by the transmitting means. . 14. The transmission means includes a part of the identification information of the file of the IC card, and a file having a part of the identification information of the file is assigned to the file as a priority order of the file. 14. The host device according to claim 13, wherein command data for instructing to select a file according to the number of accesses is transmitted to the IC card. 15. When the reception means externally receives response data including identification information of a file, command data for instructing other than the selection of the file is continuously transmitted to the IC card, or the IC card. Input means for inputting whether to send command data for instructing the selection of a file using part of the file identification information, and instructing the selection of the file using part of the file identification information from this input means When the transmission of the command data is input, the transmission means includes a part of the identification information of the file of the IC card, and the priority of the file is selected from the files having the part of the identification information of the file. And control means for controlling to transmit the command data instructing to select the file according to the information indicating Host device of claim 13, wherein Rukoto.