JPS62276683A - Ic card - Google Patents

Abstract

PURPOSE:To reduce the memory capacity of a terminal by storing and managing the guidance information of application names, the guidance information of service names and scenario information in/by an IC card itself. CONSTITUTION:A memory 6 in an IC card 4 is logically divided into a common data field (CDF) and three applification data fields (ADF) ADF1-ADF3. A guidance information record 10 indicating application names is stored in the CDF. An intra-memory address information record 11 of ADFs corresponding to respective application is also stored in the CDF. A record 13 recording service names and scenarios corresponding to respective service is stored in the ADF1. A reference program for reading out the information records 10, 13 from the IC card 4 and a reference program 5 for informing the application and service to the IC card 4 are stored in the memory 3 of a control part 1.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] This invention relates to an IC card in which a wide variety of IC cards with different functions and purposes coexist within one IC card system. It is something.

[Conventional technology]

Traditionally, the memory area within a card has been designated as a common data field (hereinafter referred to as CDF).
) and the application data field (Ap
plication Data Field: AD
There are IC cards that are divided into F. However, even in that case, information recording the number and name of the ADF and information recording the relationship between the number or name of the ADF and the address in the memory of the ADF were not stored in the card. Therefore, the terminal held application (APL) names of all cards used in the system, guidance information of possible service names, and scenarios (contents and order of commands).

FIG. 3 is an example of such a system. The control unit 1 of the terminal has a CPU 2 and a memory 3, and the memory 3 stores guidance information and scenario information. IC
A CPU 5 and a memory 6 are also present within the card 4, and the memory 6 is divided into CDF, ADF1, ADF2, and ADF3. When the card user inserts the IC card 4 into the card reader/writer 7, the CPU 2 detects this and displays application name guidance on the display (for example, CR
T) Display on 8. The user selects an application using the keyboard 9 while viewing the guidance. Having received the information, the CPU 2 notifies the IC card CPU 5 of the application name or number via the reader/writer 7. Based on that information, CPU5
Select one of the ADF3 and select that ADF and CDF.
is made accessible to the control unit 1 of the terminal. Subsequently, the CPU 2 of the control unit 1 displays service name guidance on the display unit 8. The user selects a service name using the keyboard 9 and notifies the CPU 2 of the service name. The CPU 2 selects a scenario corresponding to the selected application name and service name, issues a series of commands to the IC card, and performs business operations.

[Problem that the invention seeks to solve]

Therefore, the conventional system had the following drawbacks.

(1) When there are many types of IC cards and many types of services used in the system, the amount of guidance information and scenario information becomes enormous, and a large amount of memory is required in the terminal. For this reason, it has been difficult to use something like a telephone as a terminal.

(2) If you try to add an IC card with a function that did not exist before or a new service to the system, new guidance information will be displayed on the terminal.

It is necessary to add scenario information. This is relatively easy for a terminal that uses an external memory medium (for example, FD), such as a high-end personal computer, but is difficult for a general terminal.

(3) Even if the number of applications and services for each individual card is small, if the system provides many applications and services, card users will have to refer to guidance and perform many key selection operations in order to select applications and services. It becomes necessary to do so.

The purpose of this invention is to convert application name guidance information, service name guidance information, and scenario information into IC
The purpose is to eliminate the above decision by storing and managing the card itself.

[Means for solving problems]

The IC card according to the present invention has a memory area within the IC card that can be used for all applications.
DF and one or more ADFs that can be used only for individual applications, with each
Information recording the DF number and name, and each ADF
Information recording the relationship between the number or name of the ADF and the address in the memory of the ADF is stored in the card.

[Effect]

In this invention, the number and name of the application that can be provided by the IC card, the service number and name, and scenario information corresponding to the service are stored in advance in the memory of the IC card, and these information are stored in the terminal. However, commands to read this information, commands to notify the card of the application number selected by the user, and the order in which they are issued (common scenario) are stored. The terminal supports users in selecting applications and services according to common scenarios.

〔Example〕

FIG. 1 is a diagram showing one embodiment of the present invention.

1 to 9 are the same as in FIG. The memory in the IC card 4 includes a CDF, three ADFIs, ADF2. It is logically divided into ADF3. The CDF stores a guidance information record 10 indicating the name of the application provided by the card. Separately, the information system of the ADF memory address for each application is also available.
:-do]1 is also stored. Management information of the storage address of each information 1/code is recorded in the CDF table 12, and when the CPU 5 in the IC card 4 receives a record number from the outside, it can read the record. The ADFI is an ADF used for credit shopping, and stores a record 13 recording service names and service-compatible scenarios that can be provided by the ADF. Management of the storage address of this information is executed by the storage information of the management 1 table]4. This information is stored in ADF2 for electronic money shopping. It is also stored in the ADF 3 for medical files. On the other hand, the memory 3 of the control unit 1 contains a basic program for reading information records 10.13 from the IC card 4.
A basic program 15 for notifying the IC card of applications and services selected by the card user is stored, and scenarios for subsequent services are
Read from card 4.

FIG. 2 shows a sequence for executing a service in the IC card system shown in FIG. First, the control unit 1 reads the card ID of the IC card 4 and authenticates the card. Thereafter, if necessary, processing such as opening the card is performed using the password input by the card user. Subsequently, the control unit 1 reads AFL guidance information from the IC card 4 and displays it on the display unit 8.

The card user selects an application number from the guidance. The control unit 1 notifies the IC card 4 of the application number key-selected by the card user, and the card receives the AD card corresponding to the received application number.
Oven F. Next, the control unit 1 reads the service name guidance information and the corresponding scenario information from the IC card 4, and displays only the service name guidance on the display unit 8.
to be displayed. The card user selects the number for the service they wish to receive. The control unit] receives the selected service number from the display unit 8 and takes out scenario information corresponding to the service. The control unit 1 executes subsequent services according to the selected scenario information.

〔Effect of the invention〕

As explained above, the present invention has the following advantages because the application selection guidance, service selection guidance, and service corresponding scenario are all stored in the IC card.

(1) The above information is stored on the IC card, and only the programs that use this information are stored on the terminal, so even if there are many applications and services, the amount of memory on the terminal does not need to be that large. .

(2) All ICs for yr-compliant applications and services
When adding a new application or service to a card system, it is sufficient to issue an IC card that stores information necessary for a new application or service, and there is no need to make any changes to the system or end.

(3) The card user can select the desired one from only the applications and services supported by the IC card.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the IC card of the present invention and an example of a system using the same, Fig. 2 is a diagram showing a sequence when a service is executed in the system of Fig. 1, and Fig. 3 is a diagram of a conventional IC card. 1 is a block diagram showing an example of a system that uses an IC card. In the figure, ] is the control unit of the terminal, 2 is the CPtJ, 3 is the memory, 4 is the IC card, 5 is the CPU, 6 is the memory, 7 is the IC card reader/writer, 8 is the display unit, 9 is the keyboard, 10 is application guidance information, 11
is the address information of the data field compatible with the application, 12 is the management table of the common data field, 1
3 is service name guidance information and scenario information corresponding to the service; 14 is a management table for application data fields; and 15 is a basic program in the terminal.

Claims (2)

[Claims] (1) The memory area in the IC card is logically divided into a common data field that can be used for each application, and one or more application data fields that can be used only for individual applications, and The card is characterized in that information recording the number and name of the application data field and information recording the relationship between the number or name of each of the application data fields and the memory address of the application data field are stored in the card. IC card. (2) Information recording the numbers and names of services that can be provided to card users, and information recording the contents and order of commands issued to the IC card from the outside to realize each service. , an IC card according to claim 1, wherein the IC card is stored inside the IC card.