JPH11272809A - Ic card, display device, terminal device, and system using them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC card, display device, terminal device, and system, using them, which display new application information and perform rewriting corresponding to an IC card without adding a program etc. to the display device side even when a new application is added to the IC card on a small-sized terminal having inexpensive and limited functions like a balance display unit. SOLUTION: An electronic wallet system using the IC card 6 is able to store various application information such as money amount information and point information on the one IC card 6. Here, display information of each application is stored in predetermined format in a determined area on the IC card 6 and then the display device 1 can display those pieces of information in order by the same program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card capable of storing a plurality of pieces of application information such as electronic money information and premium point information in an IC card, and displaying these pieces of information sequentially on a display device. The present invention relates to a display device, a terminal device, and a system using the same.

[0002]

2. Description of the Related Art At present, when a user purchases a product, a retailer issues premium point information according to the amount of the purchase, and a premium point service that allows the user to exchange the stored point information for the product at a later date is available. Widespread. This is provided as a service for specific users who frequently purchase products, but since the service is currently provided for each store using a magnetic card etc., the user has point cards for multiple stores. There must be.

On the other hand, as described in Japanese Patent Application Laid-Open No. Hei 3-92966, a complete cashless transaction has been studied by an electronic wallet system using an IC card. This is a system in which a transaction can be completed without using cash by writing arbitrarily specified amount information in a memory in an IC card and transmitting necessary amount information from the IC card at the time of settlement. .

[0004]

When a commercial transaction is realized by the electronic wallet system, various application data can be stored in the IC card together with the electronic money information. It can be stored on a card and point information can be displayed together with electronic money information on a display device.

As a result, conventionally, a user carries a card for each store and a dedicated display device is required to read the data of the card. A plurality of application data can be displayed on the display device.

However, in a portable terminal such as a balance display having limited functions such as a display panel and keys, it is difficult to display a plurality of pieces of application information in a distinguished manner or to select desired application information. It is. In addition, when an application is newly added to the IC card, it is necessary to add a display control program also on the display device side, and conventionally, it has been essential to use a flash memory or the like on the display device side. Flash memories are expensive and cannot be used with inexpensive devices.

An object of the present invention is to provide a small-sized terminal having a limited function such as an inexpensive balance display, even if a new application is added to an IC card, without adding a program or the like to the display device. I display the application information and rewrite it corresponding to the IC card.
An object of the present invention is to provide a C card, a display device, a terminal device, and a system using these.

[0008]

In order to achieve the above object, according to the present invention, there is provided a display device for displaying a plurality of pieces of balance information stored in an IC card. An IC card read / write unit for reading and writing balance information in the IC card; a display unit for displaying the balance information; and controlling the IC card read / write unit to read the plurality of balance information from the IC card. It comprises control means for displaying the balance information specified by the instruction from the input means on the display means.

[0009] Then, the plurality of balance information is stored in the IC card as character code information of a unified standard, and the display means displays information corresponding to the character code information. The balance information is stored in a specific area such as a directory file of the IC card or an answer-to-reset file.

An IC card having a memory means for storing a plurality of pieces of application information, wherein the memory means has a first memory section and a second memory section, The application information is stored in the first memory unit as data read and written by a program corresponding to each application information, and the data created based on the data stored in the first memory unit is The data stored in the second memory unit and the data stored in the second memory unit are read by a program common to a plurality of applications.

A display device for displaying a plurality of pieces of application information stored in an IC card, wherein the IC card has a memory means for storing a plurality of pieces of application information, and the memory means comprises a first memory means. A plurality of application information, the plurality of application information is stored in the first memory unit as data read and written by a program corresponding to each application information, the first memory The data created based on the data stored in the section is stored in the second memory section, and the data stored in the second memory section is read by a program common to a plurality of applications. IC card reading means for reading application information of the IC card; Controlling the display means for displaying application information and the IC card reading means to read specific information from the plurality of pieces of application information stored in the second memory unit with the common program and display the specific information on the display means And a control means for controlling the

A terminal device for reading and writing a plurality of pieces of application information stored in an IC card,
The IC card has a memory unit for storing a plurality of application information, the memory unit has a first memory unit and a second memory unit, and the plurality of application information is In the memory unit, stored as data read and written by a program corresponding to each application information, data created based on the data stored in the first memory unit is stored in the second memory unit, The data stored in the second memory unit is read by a program common to a plurality of applications, and is used for reading and writing application information stored in the IC card. Input means for inputting an instruction for updating; A configuration in which a control unit for the data stored in the first memory portion of the application information specified updated by the IC card reading and writing unit according to an instruction from.

An IC card system including an IC card, a display device and a terminal device,
The C card has a memory unit for storing a plurality of application information, the memory unit has a first memory unit and a second memory unit, and the plurality of application information is Is stored as data read and written by a program corresponding to each application information, and data created based on the data stored in the first memory unit is stored in the second memory unit. The data stored in the second memory unit is read by a program common to a plurality of applications, and the display device displays a plurality of application information stored in an IC card. IC card reading means for reading the application information of the user, and a table for displaying the application information And control means for controlling the IC card reading means to read specific information from the plurality of application information stored in the second memory unit by the common program and to display the read information on the display means. And the terminal device is I
An IC card reading / writing means for reading / writing a plurality of application information stored in the C card, and reading / writing the application information stored in the IC card; an input means for inputting an instruction regarding a record update; Control means for updating, by the IC card reading / writing means, data stored in the first memory unit of the application information specified by the instruction from the input means is used.

As described above, the user can store a plurality of application information such as electronic money information and premium point information in one IC card.
The user can select and display these pieces of application information on one display device. Further, since display data is stored in a fixed area of the IC card in a unified format, even in a display device having limited functions such as a balance display, necessary application information can be transferred from the IC card by a simple control procedure. It can be obtained and displayed. Further, since a control program for displaying each application can be shared, even when a new application is added to the IC card, a new application can be displayed without changing the control program of the display device. Therefore, it is possible to support a plurality of applications without using a flash memory or the like for the display device as in the related art. In the terminal device for rewriting the application information stored in the IC card,
Information can be rewritten according to the configuration of the card.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows an embodiment of a display device using the present invention, and is a configuration diagram of a display device for displaying information of a plurality of applications stored in an IC card.
1 is a display device, 2 is a display portion, 3 is a calculation processing portion, 4 is a key, 5 is an IC card reading portion, 6 is an IC card, 7 is a connection portion with a display device, 8 is a calculation processing portion, and 9 is an ID. A number storage unit, 10 is an amount information storage unit, 11 is a point information storage unit 1, 12 is a point information storage unit 2, and 50 is a ROM (R
(Ead Only Memory), 60 is ROM50
Is a common display control program stored in the.

First, an outline of an IC card system to which the present invention is applied will be described with reference to FIG.
The IC card used in the present invention is a multi-application compatible IC that can store a plurality of application information.
Card. Application information such as electronic money is always stored in an IC card. For example, if a customer
Take the card 6 to the store and shop. At that time, the store also needs an IC card 33 for storing electronic money information paid by customers. A program related to a specific application is stored in the POS terminal 25 installed in the store.
Exchange information between C cards. The obtained sales and the like can be remitted to a bank via a communication line or the like. The display device 1 can display the information of the IC card updated by the transaction regardless of the application.

Next, the data structure in the IC card will be described with reference to FIGS. The IC card is standardized by ISO7816,
File (hereinafter, MF), Directory file (hereinafter, DIR file), Answer To R
eset file (hereinafter ATR file), Ded
icated file (hereinafter, DF), Element
and ary files (hereinafter, EF).

When a clock signal and a reset signal are supplied after the power is turned on to the IC card, the IC card is activated and various applications in the IC card can be used. In this case, immediately after the activation of the IC card, the MF of FIG.
13 is selected. When the IC card is activated, an Answer To Reset signal (hereinafter, ATR) is returned from the IC card to the display device.
Since the amount of data that can be stored in R is limited, additional data that cannot be stored is stored in the ATR file 14
Is stored in Further, the application list information stored in the IC card is stored in the DIR file 15 for each record number as shown in FIG. This DIR
Each application shown in the file is stored in each of the DFs 16 to 18 in FIG. 2, but data relating to each application can be stored in the EFs 19 to 21 in FIG. 2 and used.

When the user selects an application to be displayed on the display device, first, the user selects an ISO781
The DIR file is selected by using the Select File command defined in step 6 and the DIR file is moved from the MF to the DIR file in the IC card. And, similarly, ISO7
The application stored in the IC card is confirmed by looking at the list information in the DIR file using the Read DIR Record command defined in 816. This application stores balance information control means for controlling balance information and the like in the IC card. When a desired application is stored, the ID of each application (hereinafter, AID) is set in a Select File command, and the application is moved to an arbitrary application (DF). Then, each application program is operated to display application information.

In FIG. 1, the money information storage unit, the point information storage unit 1, and the point information storage unit 2 are stored in the IC card 6, but here, the application 1 in FIGS. Application to control,
The amount information storage unit 10 for storing electronic money information corresponds to the EF 19 in FIG. Further, for example, point information issued at the time of shopping at a department store or the like is stored in the point information storage unit 1, and the application 2 in FIGS. 2 and 3 is an application for controlling the point information. The storage unit 1 corresponds to the EF 20 in FIG. Further, for example, the point information of the boarding distance issued when boarding an aircraft is stored in the point information storage unit 2. However, the application 3 in FIGS. 2 and 3 is an application for controlling the point information of the boarding distance. Yes, the point information storage unit 2 in FIG. 1 corresponds to the EF 21 in FIG.

The ID number storage unit 9 in FIG. 1 is a place for storing an ID number unique to the IC card, and each application can authenticate the IC card using this ID number.

When the user wants to display the application information in FIG. 1, the display character data of the electronic money information and the point information supplied from the IC card via the card reading unit 5 and the connection unit 7 are stored in the ROM 50. The arithmetic processing unit 3 processes the data according to the common display control program 60 and causes the display unit 2 to display data. The user looks at the content of the display unit 2 and selects desired application information by operating the key 4.

Next, an example of a display example of each application information in the IC card will be described with reference to FIG. When the user inserts the IC card 6 into the display device 1, the DI
The application 1 registered in the record number 1 of Rfile is selected. In this case, since the application 1 is an application related to electronic money, the display content is electronic money information (E-MONEY), and the stored balance information is 1,000 yen in Japanese yen (1,000, JPY). It is. It is assumed that pressing the key 1 of the display device switches the electronic money information one after another.

Here, when key 2 of the display device is pressed, DI
The application 2 stored in the record number 2 of R file is selected. In this case, since the application 2 is an application relating to the point information of the department store, the display content is the point information (here, A-SHO of the department store name).
P), indicating that the number of stored points is 30,000 points (30,000P). Also in this case, the display is switched by pressing the key 1 of the display device.

When the key 2 of the display device is further pressed, the application 3 stored in the record number 3 of the DIR file is selected. In this case, since the application 3 is an application relating to the point information of the boarding distance of the aircraft, the display content is the point information (here, B-FLIGHT of the airline name), and the stored number of points is 22,000 points ( 22,000M)
Is shown. Also in this case, the display is switched by pressing the key 1 of the display device. In order to distinguish each application, at the time of display, DIR fi
It is assumed that the record number of le is displayed.

FIG. 5 shows an operation flow of display switching when two keys are used. Here, a case is shown in which two applications, application 1 and application 2, are displayed. When the IC card is inserted into the display device (102),
First, the first screen of the application 1 is displayed (103). Here, when key 1 is pressed (105), the next screen of application 1 is displayed (106), and when key 1 is pressed on the last screen, the first screen of application 1 is displayed.

When key 2 is pressed on the screen of application 1, (10
7), the first screen of the application 2 is displayed (108). In this case, the display of the application 2 is similarly switched by the keys 1 and 2.

Next, a specific processing flow when the user pays by electronic money and receives the above-mentioned department store premium points will be described with reference to FIG. The user inserts the IC card into the POS terminal of the shop (20
2) When the payment of the amount is OK by key operation (20)
4), the arithmetic processing unit 8 in the IC card is the amount information storage unit 1
The electronic money balance information stored in 0 is read (205). Thereafter, the arithmetic processing unit 8 determines whether or not the amount can be paid (206). If the balance is insufficient, a message indicating that the balance is insufficient is displayed (207), and the process is terminated. On the other hand, if payment is possible, the balance information in the amount information storage unit 10 is updated (208). Further, the point information storage unit 1 is updated in order to pass the point information corresponding to the payment amount to the user (209). Here, when the payment is completed, the IC card is ejected (211), and the process ends.

Next, a specific method of storing application information to be displayed on the display device in the IC card will be described with reference to FIGS. Here, it is assumed that the character data to be displayed on the display device and the actual data such as the electronic money information and the point information described above are stored in different places. In other words, actual data such as electronic money information, point information, etc.
2 and the EF 19 to EF 2 shown in FIG.
1, the application information for display is stored as character data by the method shown in FIGS.

FIG. 7 shows an example in which application information is stored in a DIR file in an IC card.
The display device writes the command (R) shown in FIG.
When the IC card sends the "read DIR Record command", the IC card sends response data (Read DIR Record response) having a length of x2 bytes shown in FIG. 7B to the display device, and thereafter indicates whether the response data is normal or abnormal. Status information (Status
s) is transmitted by 2 bytes. This command and response data are standardized by ISO7816, and x1
Is input the record number of the application to be read in the DIR file.

Here, the structure of the response data is also standardized by ISO 7816, and information (Tag) for identifying data is 1 byte, information (Length) indicating the record data length is 1 byte,
Further, record data information (R
records (hereinafter referred to as TL)
V configuration).

The response data of each application starts with a tag whose head is "61", and then the value obtained by subtracting 2 bytes from the response data length (x2 bytes) is L.
It is indicated in the “length”. Thereafter, the application ID (AID) is indicated by the tag “4F”. Here, other information may be stored in the TLV configuration in order to store more detailed information of the application.

After that, application information such as electronic money information and point information is stored in the DIRfile.
It is assumed that application information such as data1 and data2 is stored. In this case, for example, by storing each application data in an ASCII code and displaying the character information of the ASCII code on the display device as it is, it is possible to uniformly display the data in various applications.

When it is desired to display a plurality of data (for example, application name, money amount information, currency type, etc.) in each application, each data should be stored in the DIR file in the TLV configuration of the first "50". Can be sequentially displayed. For example, in the case of the display example shown in FIG.
"E-MONEY", Data2 "1,000",
Each ASCII character data of "JPY" is stored in Data3.

In the above description, the application information is stored in the DIR file.
It is also possible to store the display data of each application in the ATR file 14. In this case, IS
Data is acquired using the Read Binary command and response defined in O7816.

Next, FIG. 8 illustrates an example in which application information is stored in response data of a Select File command used when selecting an application. Note that each application stores balance information control means for controlling balance information and the like in the IC card. Here, File Control Information standardized by ISO7816
ION (hereinafter, FCI) is used to store application information. In this case, the command and the response data are also standardized by ISO 7816, and by sending the AID having the length of x1 byte to the IC card, the FCI data having the length of x2 byte and the status information are transmitted as the response data (Select File response). (S
status) is returned from the IC card to the display device.

Note that the FCI data has a TLV structure, and the first tag is “6F” and the AID tag is “8F”.
4 ". Each piece of application information represented by an ASCII code is, for example, a Tag whose head is" 50 ".
And sequentially shown on the display device.

Finally, FIG. 9 illustrates a case where each piece of application information is stored using unique data different from command and response data standardized by the ISO7816. In this case, first, the above-mentioned Select
The user selects an application to be displayed by the t File command. Then, by transmitting the unique data to the IC card (Get File Data command), the application data that the user wants to display is received from the IC card. The configuration of the command and response shall conform to ISO7816.
As shown in FIG. 9, the response data (G
et File Data response) is sent to the display device.

Each data has a TLV structure. For example, the first Tag is “61”, and the tag of the AID is “61”.
Is indicated by “4F”. Each piece of application information represented by an ASCII code starts with, for example, a tag whose head is "50", and is sequentially displayed on the display device.

The method of storing the application information to be displayed on the display device in the IC card has been described above. However, the stored information is character data to be displayed on the display device only. Actual data such as, for example, electronic money information and point information are stored in the money amount information storage units and point information storage units 1 and 2 in the IC card 6 shown in FIG. 1 and EF19 to EF21 shown in FIG. Shall be. This is because, while display data stored in a place that can be easily read by one display device, actual data that actually has value as money or points can be read only by terminals corresponding to each application What you can do. That is, it is possible to easily display only display data while protecting actual data having high importance.
In this case, each data can be stored as encrypted data. Further, the character data can also be stored in the IC card as encrypted data.

If the display contents are simple, it is possible to store only these character data in the IC card without arranging the money information storage unit and the point information storage unit in the IC card.

Next, updating of each application information to be displayed on the display device will be described. When the user conducts a transaction using electronic money and further receives point information from the shop, the character data to be displayed on the display device needs to be updated as needed.
Therefore, the arithmetic processing unit 8 in the IC card 6 controls the above-mentioned data to be updated at the same time when updating the amount information storage unit, the point information storage units 1 and 2, and the like.
The display character data is updated as needed. In this case, the character data for display is changed by the arithmetic processing unit 8 automatically processing inside the IC card. However, the content cannot be changed from outside the IC card, and the read-only character data cannot be changed. It becomes character data. Therefore, the character data for display cannot be falsified illegally.

On the other hand, the example shown in FIGS. 10 to 12 is an example in which the display data is changed by a POS terminal used by a store at the time of commercial transaction by transmitting a unique command to the IC card. In this case, after the commercial transaction of the electronic money information and the point information, these commands are transmitted to the IC card to update the display character data.

FIG. 10 illustrates commands and response data for updating the ASCII code character data stored in the DIR file. In this case, the configuration of the command and response data conforms to ISO7816. Also, the record number of the application to be updated is stored in x3 bytes, and command data (Change DIR Record command) of x5 bytes length is sent to the IC card to update the display data.

The structure of the command data is, for example, Tag
Starting with “61”, after storing the AID with the tag of “4F”, the old data of the data to be updated with the tag of “50” and the new data of the data to be updated with the tag of “55” are stored. When the command data is transmitted to the IC card, the update result indicates the status information (Status).
Is sent back 2 bytes.

Regarding the transmission method of the old data and the new data, there are a case where only the data to be updated is transmitted, and a case where all data are transmitted.

Next, in FIG. 11, Select Fill
An updating method when ASCII code character data is stored as FCI in the response data of the e command will be described. Also in this case, the configuration of the command and the response data is based on ISO7816. Also, x5
Byte length command data (Change FCIRe
(command) is sent to the IC card to update the display data.

The structure of the command data is, for example, Tag
Starting with “6F”, after storing the AID with the tag of “84”, the old data of the data to be updated by the tag of “50” and the new data of the data to be updated by the tag of “55” are stored. When the command data is transmitted to the IC card, the update result indicates the status information (Status).
Is sent back 2 bytes.

Finally, referring to FIG.
Is not defined in the command (here, Get Fi
The case where character data stored in response data of the “le Data command” is updated will be described. Also in this case, the configuration of the command and the response data is the ISO78
16 shall be followed. Also, command data (Change File Data command) having a length of x5 bytes is sent to the IC card to update the display data.

The structure of the command data is, for example, Tag
Starting with “61”, after storing the AID with the tag of “4F”, the old data of the data to be updated with the tag of “50” and the new data of the data to be updated with the tag of “55” are stored. When the command data is transmitted to the IC card, the update result indicates the status information (Status).
Is sent back 2 bytes.

In the above description, the case where old data is updated to new data has been described as an example. However, the content of command data for updating is such that only new data is transmitted and always updated to new data. May be. Further, when it is desired to add display data, it is possible to cope with this by adding, for example, data having a TLV configuration beginning with “55”. Further, when the update command is used, the display data may be controlled so that the display data cannot be changed unless the user inputs a password correctly in order to prevent unauthorized change of the display data. As described above, the character data stored in the IC card can be updated. However, in general, in order to enhance security, the POS terminal or the like is required to update the IC card as described above.
It is preferable that the display data is read-only by controlling the arithmetic processing unit 8 in the IC card to update the display character data instead of updating the display data by sending a command to the card.

FIG. 18 relates to updating of application information in an IC card by an information rewriting device such as a POS terminal used by a store or the like during a commercial transaction. Here, exchange of electronic money information, point information, and the like between the customer A's IC card 6 and the shop B's IC card 33 via the POS terminal 25 will be described as an example.

The customer A goes shopping at the shop B with the IC card 6 shown in FIG. It is assumed that the IC card 6 of the customer A stores the electronic money information in the amount information storage unit 10 and the point information storage unit 11 stores the point information of the shop B. On the other hand, the store B also has an IC card 33 similar to the IC card of the customer A, the electronic money information as the sales proceeds is stored in the amount information storage unit 37, and the point information storage unit 38
Stores point information for distribution to customers. When the customer A purchases a product, the customer A connects the connector 7 of the IC card 6 with the card read / write unit 31 of the POS terminal 25. On the other hand, the shop B also has the connector 3 of the IC card 33.
4 is connected to the card read / write unit 32 of the POS terminal.
Here, the sales amount of the product is input by the key 27 of the POS terminal, and a transaction instruction is performed. The instruction to the POS terminal and the response from the POS terminal can be confirmed on the display unit 26 at any time. In response to the above instruction, the money amount information stored in the money amount information storage unit 10 of the IC card 6 is moved to the money amount information storage unit 37 of the IC card 33 under the control of the arithmetic processing unit 28 of the POS terminal. Thereafter, the point information corresponding to the sales amount is moved from the point information storage unit 38 of the IC card 33 to the point information storage unit 11 of the IC card 6. Through the above exchange, the customer A pays the merchandise price to the store B, and can obtain points from the store B according to the amount.

The sales history is stored in the sales information storage unit 30.
It is also possible to record it in Further, using the modem 29, it is also possible to exchange money amount information, point information, and the like with external banks and centers.

At this time, the character data to be displayed on the display device is updated by the arithmetic processing unit in each IC card based on the actual data values such as the updated amount information and point information. You.

Since character data for display and actual data such as electronic money information and point information cannot be rewritten at the same time, the character data is usually updated after rewriting the actual data. for that reason,
There is a time lag between the update of the actual data and the character data.If the card is accidentally removed before the processing is completed or if the card is maliciously removed, the actual data is rewritten but the character data is It is possible that the data before the transaction remains without being rewritten.

Therefore, when rewriting balance data such as electronic money and points using a POS terminal during a commercial transaction, both the actual data and the character data are rewritten, and the process ends normally only when the values match. It is possible to prevent the above by controlling the terminal such that Specifically, it is conceivable to control the POS terminal to automatically eject the card after the POS terminal confirms that the two values match, or to output a processing end message to the display unit after the two match. . Further, in order to detect a card whose character data has been falsified at an early stage, it is possible to control so that a commercial transaction is not allowed when a card whose both do not match is inserted into the POS terminal.

Next, with reference to FIG. 13, the flow of processing when the display data is obtained from an IC card will be described. When the user inserts the IC card into the display device (30
2), power is supplied to the IC card, and thereafter, a clock signal and a reset signal are supplied to activate the IC card (303). Thereafter, an ATR signal is sent from the IC card to the display device (304).

The display device first selects Select F
ile command is sent to the IC card, and the DIR fi
le is selected (305). Next, Read DIR
Send a Record command to the IC card (30
6) Read application information stored in the DIR file.

Here, as shown in FIG.
When the display data of each application is stored in the file, the response data of the Read DIR Record command is read and the desired application data is displayed. On the other hand, Read DIR
After transmitting the Record command to the IC card (30
7) In some cases, a Select File command is transmitted to the IC card together with the ID (AID) of the desired application (308) to select the desired application.

As shown in FIG. 8, Select
To store the display data of each application in the response data of the File command, this Select
The response data (FCI data) of the File command is read to display desired application data. In the case shown in FIG. 9, after a desired application is selected, a Get File Data command is transmitted to the IC card (311), response data is obtained, and display data is read.

Here, by sending a command unique to each application to the IC card, application-specific data in the EF can be read (312). In this case, although each data is encrypted, actual data such as electronic money information and point information can be read instead of display data. In addition, a command unique to each application can not only read out application information but also update it.

Here, when displaying the next data, the same processing is performed to display the next data.
To terminate the display, the supply of the power supply, clock signal, and reset signal to the IC card is stopped to deactivate the card (314), and then the IC card is ejected (315). The process ends (316).

FIG. 17 shows display data, actual data such as electronic money information and point information, and storage locations of the display data. The storage locations of the display data corresponding to FIGS. 7, 8 and 9 described above with reference to FIG. 13 are shown.

Next, key input of the display device will be described with reference to FIG. In the embodiment shown in FIG. 4, the display is switched by pressing the keys 1 and 2; however, the display may be switched only by the key 1. In this case, for example, as shown in the operation flow of FIG. 14, the display is switched within the same application when a key is pressed for less than a predetermined time t1, and the application is switched when the key is pressed for more than t1. For example, the display of a plurality of applications can be switched with one key.

It should be noted that, in addition to the case where the time for pressing the key is detected as described above, the number of times the key is pressed may be detected. In this case, for example, when the key is pressed only once, the display is switched within the same application, and when the key is continuously pressed twice or more, the application is switched. Pressing the key once switches to the next display in the same application, pressing the key twice switches to the previous display in the same application, and pressing the key three times switches to another application. The control may be finely divided. Further, the display device may not be provided with a key as described above, and may be controlled so that the terminal automatically switches the display at regular intervals.

Next, another method of using the display character data area will be described. In the above, the application service name, amount information,
The currency type, point information, etc. are stored. For example,
It is also possible for the user to freely use it as a memo recording area. For example, after shopping using electronic money, by writing notes in the above area with an electronic wallet terminal, the user can use this note when writing a household account book after returning home. it can. In this case, it is possible for the electronic wallet terminal to transmit the commands shown in FIGS. 10 to 12 to the IC card to record the memo on the IC card.

It is also possible to record the number of accesses to each application in the above-mentioned area, and display the applications on the display device in descending order of the number of uses.

In particular, as shown in FIG.
In the case of recording data in e, first, the arithmetic processing unit 3 of the display device reads the number of uses stored in the DIR file for each application, and then controls the display so as to display in descending order of the number of uses. do it. In this case, since the use status of each application is recorded in the IC card, even if the display device is changed, it can be displayed in the order of the number of uses. The usage frequency of the application is not stored in the IC card as described above,
It may be stored in a memory on the display device side.

Next, automatic switching of display contents will be further described. In the above example, the display contents are switched by the key operation, but the display contents may be automatically switched at regular time intervals. In this case, the display device does not need to include a key. When the display device has a key, it is possible to control the automatic display switching to be stopped by pressing the key and to start the automatic display switching by pressing the key again.

At present, the power of the display device is often controlled to be turned off after a certain period of time, but it is also possible to automatically turn off the power after displaying all the application information.

Next, another example of the method of storing the display data in the IC card will be described with reference to FIG.

In the above description, the case where each display character data is stored in the specific file in the IC card such as the DIR file in the TLV configuration is described. However, as shown in FIG. 15, the specific character data such as $ NEXT or $ END is stored. Columns can also be used to distinguish displayed characters.

For example, when the command shown in FIG. 7 is used, the character data starting with Tag “50” is stored in the response data in the format shown in FIG. In this case, by storing each character data of FIG. 15 in the record numbers 1 to 3 of the DIR file, display on the display device as shown in FIG. 4 becomes possible. When the command shown in FIG. 8 is used, Select File
When selecting each application by a command, the data of FIG. 15 is stored in the response data.
Note that $ NEXT indicates a case where display data follows.
$ END indicates the last display data.

When the command shown in FIG. 9 is used, the data shown in FIG. 15 may be stored in a character string starting with Tag “50”, but only the data shown in FIG. You may store it in.

The display device 40 shown in FIG. 19 is obtained by expanding the functions related to a specific application in the display device shown in FIG. An IC card 6 similar to that shown in FIG. 1 is connected to the card read / write unit 44 for use. Electronic money information and premium point information are mentioned as examples of applications stored in the IC card. However, electronic money information is always used in commercial transactions, is used most frequently, and is the most important information. it is conceivable that. Therefore, it is also useful to store an electronic money program 70 dedicated to an application handling electronic money in the ROM 50 'in advance in addition to the common display control program 60 shown in FIG.

By placing the dedicated electronic money program 70, the display device 40 can read the actual data stored at the location indicated by the vertical line in FIG. As a result, it is possible to read not only the current balance information but also the transaction history (date and time, partner, amount), and the like.
Further, the electronic money information can be locked or unlocked by inputting a password from the key 43.
However, electronic money information is not exchanged between cards because it is used as an inexpensive display device.

Of course, for applications other than electronic money, display data such as balance information can be displayed by the common display control program, similarly to the display device 1 of FIG.

Finally, registration of an application in an IC card will be described with reference to FIG. User is I
When a new application is registered in the C card, for example, it is possible to use an IC card application writing device 22 as shown in FIG. In this case, the user can insert the IC card into the writing device 22 and use the select key to register a desired application in the IC card. In this case, the writing device 22 is connected to the IC card application providing companies 23 and 24 via a telephone line or the like, and downloads a desired application program from the providing company using the telephone line. When writing an application program to an IC card, character code data for display is also written to the common area in the IC card as described above. In some cases, a plurality of applications are stored in the IC card application writing device in advance, and the user selects an application from among the applications and writes the application to the IC card.

Although FIG. 16 illustrates a case where a user uses a dedicated terminal for application registration at a store or the like, a personal computer at home is connected to a provider via a telephone line or the like, and the application is downloaded and an IC is downloaded. It is also possible to register on the card.

As described above, in the embodiment shown in FIGS. 1 to 16,
Although the description has been given of the contact type IC card in which signals are exchanged with the contacts, it is also possible to store information in a common area by character codes in a non-contact type IC card and display the information on a display device.

In the embodiment, the balance information at the time of commercial transaction such as electronic money information and premium point information has been described. However, record information that does not accompany commercial transaction such as health insurance card use information, library lending information, and driver's license. Can be handled as similar application information.

[0084]

According to the present invention, a plurality of pieces of application information such as premium point information are stored together with electronic money information in one IC card, and the user selects necessary application information by key operation or the like. It is possible for the user to display necessary information on the display device at any time. In this case, by storing character data for display in a unified format in a predetermined area in the IC card, even in a display device with limited functions such as a display panel and keys such as a balance display device, Each application information can be displayed without performing a complicated procedure. As a result, it is possible to display the contents of the data while protecting the data in the area of high importance that is actually the target of the transaction. In particular, the DI
When the application information is stored in the R file, necessary information can be obtained without selecting each application by a Select File command, so that display data can be obtained from the IC card by a simple procedure.

Further, since the display data is stored in the IC card in a unified format, a program for reading the display data from the IC card can be shared by each application. Therefore, even when an application is newly added to the IC card, the display device can cope without changing the control program. Therefore, since an expensive flash memory is used, a display device can be manufactured at low cost.

In a terminal device for updating information stored in an IC card, a storage area in the IC card to be updated is clarified, and the data to be actually traded and the data for display are compared. By confirming the match, the security of the IC card system is further increased, and
The information stored in the C card can be updated.

[Brief description of the drawings]

FIG. 1 is an embodiment of a configuration diagram of an IC card display device using the present invention.

FIG. 2 shows a file configuration of an IC card used in the present invention.
It is an example.

FIG. 3 is a DIR file of an IC card used in the present invention.
1 is an example of the configuration.

FIG. 4 is an embodiment of a display method of an IC card display device using the present invention.

FIG. 5 is an example of an operation flow of an IC card display device using the present invention.

FIG. 6 is an operation flow at the time of updating electronic money information and point information in the IC card used in the present invention.

FIG. 7 is an embodiment of a method of storing display data in an IC card display device using the present invention.

FIG. 8 is another embodiment of a method of storing display data in an IC card display device using the present invention.

FIG. 9 is another embodiment of a method of storing display data in an IC card display device using the present invention.

FIG. 10 is an embodiment of a method of updating display data in an IC card display device using the present invention.

FIG. 11 shows another embodiment of a method of updating display data in an IC card display device using the present invention.

FIG. 12 shows another embodiment of a method of updating display data in an IC card display device using the present invention.

FIG. 13 is an example of an operation flow when acquiring display data in an IC card display device using the present invention.

FIG. 14 is another example of the operation flow of the IC card display device using the present invention.

FIG. 15 is another embodiment of a method of storing display data in an IC card display device using the present invention.

FIG. 16 is an embodiment showing a method of writing an application in an IC card used in the present invention.

FIG. 17 is an example of a storage location of display data in an IC card used in the present invention.

FIG. 18 is an example showing a method of connecting an IC card and a POS terminal used in the present invention.

FIG. 19 is another embodiment of an IC card display device using the present invention.

FIG. 20 is an example of an IC card system using the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Display apparatus, 2 ... Display part, 3 ... Calculation processing part, 4 ... Key, 5 ... Card reading part, 6 ... IC card, 7 ... Connection part, 8 ... Calculation processing part, 9 ... ID number storage part, 10 ... Amount information storage unit, 11 ... Point information storage unit 1, 12 ... Point information storage unit 2, 13 ... MF (Master Fil)
e), 14 ... ATR file (Answer To
Reset file), 15 DIR file (D
directory file), 16-18 ... DF (D
edited File), 19-21 ... EF (E
elementary File), 22: IC card application writing device, 23-24: IC card application providing company, 25: POS terminal, 26 ...
Display unit, 27 key, 28 arithmetic processing unit, 29 modem, 30 sales information storage unit, 31-32 card reading / writing unit, 33 IC card, 34 connection unit, 35 I
D number storage unit, 36 arithmetic processing unit, 37 amount information storage unit, 38 point information storage unit 1, 39 point information storage unit 2, 40 display device, 41 amount display unit, 42
Arithmetic processing unit, 43: key, 44: card reading / writing unit, 5
0, 50 '... ROM (Read Only Memory)
y), 60: common display program, 70: electronic money program.

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI G07F 7/08 G07F 7/08 L (72) Inventor Shigeyuki Ito 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Pref. Hitachi, Ltd. Multi In the Media System Development Division (72) Inventor Minoru Takami 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Incorporated Multimedia System Development Division Hitachi, Ltd. (72) Inventor Masayuki Inoue 292 Yoshidacho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Address Co., Ltd. Hitachi Image Information System Co., Ltd. (72) Inventor Koichi Yoneda 292, Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Co., Ltd. (72) Inventor Yu Oki, Higashi Koigakubo, Kokubunji, Tokyo Eyes 280 address Co., Ltd. Hitachi, center within the Institute

Claims (63)

[Claims] 1. A display device for displaying a plurality of pieces of balance information stored in an IC card, an input means for inputting a display instruction, and an IC card reading and writing means for reading and writing the balance information in the IC card. Display means for displaying the balance information; reading the plurality of balance information from the IC card by controlling the IC card read / write means; and displaying the balance information specified by the instruction from the input means. And a control means for displaying the information on the display device. 2. The information processing apparatus according to claim 1, wherein the plurality of pieces of balance information are stored in the IC card as character code information in a unified format, and information corresponding to the character code information is displayed on the display means. The display device according to claim 1. 3. The at least one of the plurality of pieces of balance information in the previous term,
3. The display device according to claim 2, wherein the display device is money amount information. 4. The display device according to claim 2, wherein the plurality of pieces of balance information are stored in a directory file of the IC card. 5. The display device according to claim 2, wherein the plurality of pieces of balance information are stored in an answer-to-reset file of the IC card. 6. A plurality of balance information control means for controlling said balance information is stored in said IC card, and said balance information is read when said balance information control means is selected. The display device according to claim 2. 7. A plurality of balance information control means for controlling said balance information are stored in said IC card, and specific information is sent to said IC card after selecting one of said balance information control means. The display device according to claim 2 or 3, wherein the balance information is read by (1). 8. The display according to claim 4, wherein said plurality of balance information is stored in said IC card as encrypted character code information. apparatus. 9. A display device for displaying a plurality of pieces of balance information stored in an IC card, an input means for inputting a display instruction, and an IC card read / write means for reading and writing the balance information in the IC card. Display means for displaying the balance information; reading the plurality of balance information from the IC card by controlling the IC card read / write means; and displaying the balance information specified by the instruction from the input means. And a plurality of balance information, each of which is divided into display data to be displayed on the display means and commercial transaction data to be used at the time of a commercial transaction, at different locations in the IC card. A display device characterized by being stored in a display device. 10. The display data is stored in the IC card as character code information in a unified format, and information corresponding to the character code information is displayed on the display means. The display device according to claim 9, wherein 11. The display device according to claim 10, wherein, during a commercial transaction, said commercial transaction data is updated and said display data is also updated. 12. A display device for displaying a plurality of pieces of balance information stored in an IC card, an input means for inputting a display instruction, an IC card reading means for reading balance information in the IC card, A display unit for displaying the balance information; and controlling the IC card reading unit to read the plurality of balance information from the IC card, and displaying the balance information specified by an instruction from the input unit on the display unit. A display device provided with control means for causing the display device to perform the control. 13. The method according to claim 1, wherein the plurality of balance information is stored in the IC card as character code information in a unified format, and information corresponding to the character code information is displayed on the display means. 13. The display device according to claim 12, wherein: 14. A display device for displaying a plurality of balance information stored in an IC card in which a plurality of pieces of balance information and a display count information indicating the number of times the plurality of pieces of balance information are read out are displayed. Input means for inputting the balance information, IC card reading and writing means for reading and writing balance information in the IC card, display means for displaying the balance information, and controlling the IC card reading and writing means to control the plurality of pieces of balance information. From the IC card and displaying the balance information specified by the instruction from the input means on the display means, wherein the control means stores the balance having a large number of display times stored in the display number information. A display device for displaying the information on the display means in order from the information. 15. The method according to claim 15, wherein the plurality of balance information is stored in the IC card as character code information in a unified format, and information corresponding to the character code information is displayed on the display means. The display device according to claim 14, wherein: 16. A display device for displaying a plurality of pieces of balance information stored in an IC card, an input means for inputting a display instruction, and an IC card read / write means for reading and writing the balance information in the IC card. Display means for displaying the balance information; and reading and writing the plurality of balance information from the IC card by controlling the IC card reading and writing means, and selecting the plurality of balance information by the number of times the input means is pressed. A display device provided with control means for displaying on the display means. 17. A display device for displaying a plurality of pieces of balance information stored in an IC card, an input means for inputting a display instruction, and an IC card read / write means for reading and writing the balance information in the IC card. Display means for displaying the balance information; and reading and writing the plurality of pieces of balance information from the IC card by controlling the IC card read / write means, and selecting the plurality of pieces of balance information according to the length of time of pressing the input means. And a control means for causing the display means to display the information. 18. An IC card for storing a plurality of pieces of balance information which can be displayed on a display device, wherein the plurality of pieces of balance information are stored as character code information in a unified format. 19. The IC card according to claim 18, wherein at least one of the plurality of pieces of balance information is money amount information. 20. The IC card according to claim 18, wherein the plurality of pieces of balance information are stored in a directory file of the IC card. 21. The IC card according to claim 18, wherein the plurality of pieces of balance information are stored in an answer-to-reset file of the IC card. A plurality of balance information control means for controlling said balance information are stored in said IC card, and said balance information is read when said balance information control means is selected. An IC according to claim 18 or claim 19.
card. 23. A plurality of balance information control means for controlling said balance information are stored in said IC card, and specific information is sent to said IC card after selecting one of said balance information control means. 20. The IC card according to claim 18, wherein the balance information is read by the following. 24. The IC according to claim 20, wherein said plurality of balance information is stored in said IC card as encrypted character code information. card. 25. A terminal device for reading and writing a plurality of pieces of balance information stored in an IC card, an IC card reading and writing means for reading and writing the balance information in the IC card, and a display means for displaying the balance information. And input means for inputting an instruction relating to a commercial transaction, and at the time of a commercial transaction, the balance information specified by the instruction from the input means is updated by the IC card reading / writing means. 26. A method according to claim 26, wherein the plurality of pieces of balance information are stored in different places in the IC card separately into display data to be displayed on the display means and commercial transaction data to be used during a commercial transaction. 26. The terminal device according to claim 25, wherein: 27. The display data is stored in the IC card as character code information in a unified format, and information corresponding to the character code information is displayed on the display means. The terminal device according to claim 26, wherein 28. The terminal device according to claim 27, wherein at the time of commercial transaction, said commercial transaction data is updated by said IC card read / write means, and said display data is also updated. 29. The terminal device according to claim 28, wherein during the commercial transaction, the terminal is normally terminated only when the updated commercial transaction data and the updated balance information of the display data match. 30. An IC card having memory means for storing a plurality of pieces of application information, wherein said memory means has a first memory unit and a second memory unit; The application information is stored in the first memory unit as data read and written by a program corresponding to each application information, and the data created based on the data stored in the first memory unit is An IC card stored in a second memory unit, wherein data stored in the second memory unit is read by a program common to a plurality of applications. 31. An IC card having a memory means for storing a plurality of pieces of application information, wherein said memory means has a first memory part and a second memory part. Application information is stored in the first memory unit, data created based on the data stored in the first memory unit is stored in the second memory unit, the first memory The data stored in the section
An IC card, wherein the data has a higher security level than data stored in the second memory unit. 32. An IC card having a memory means for storing a plurality of pieces of application information, wherein said memory means has a first memory part and a second memory part. The application information of the first memory unit, when updating the application information is stored as data from which the recorded content can be updated from the outside, the data created based on the data stored in the first memory unit Is stored in the second memory unit, and data stored in the second memory unit cannot be updated from the outside. 33. An IC card having memory means for storing a plurality of pieces of application information, wherein said memory means has a first memory section and a second memory section, An IC card wherein data stored in the second memory unit is created based on the application information stored in the first memory unit, and is data dedicated to display. 34. An IC card having a memory means for storing a plurality of pieces of application information, wherein said memory means has a first memory unit and a second memory unit. Application information, the first memory unit,
The application information stored in two places of the second memory unit and stored in the first memory unit is higher in value than the application information stored in the second memory unit. IC card. 35. The IC card according to claim 30, wherein the data stored in the second memory unit is character code information in a predetermined format. 36. The data stored in the second memory unit is sent to the outside as response data as a response to the input of command data as a command in a specific format from the outside. 30 to Claim 3
5. The IC card according to any one of 5. 37. When recording and updating application information, data stored in the first memory unit is updated, and data stored in the second memory unit is updated. The IC card according to any one of claims 30 to 36. 38. When updating the recording of application information,
When the data stored in the first memory unit is updated, the data is stored in the first memory unit by an arithmetic processing unit that processes a predetermined operation provided inside the IC card. 4. The data stored in the second memory unit is updated.
7. The IC card according to any one of 7. 39. The data processing apparatus according to claim 30, wherein the data stored in the second memory unit is stored in a directory file defined by ISO7816 of the IC card. The described IC card. 40. The data stored in the second memory unit is stored in an answer-to-reset file defined in ISO7816 of the IC card. The IC card according to any one of the above. 41. A plurality of information control means for controlling the application information is stored in the IC card, and when the information control means is selected, data stored in the second memory unit is read. The IC card according to any one of claims 30 to 38, wherein: 42. A plurality of information control means for controlling said application information is stored in said IC card, and after selecting one of said information control means, specific information is sent to said IC card, 39. The IC card according to claim 30, wherein data stored in the second memory unit is read. 43. The data stored in the second memory unit is stored in the IC card in the form of encrypted character code information.
The IC card according to any one of the above. 44. In the IC card, additional information of the application information is written into the second memory unit from outside.
An IC card according to any one of Items 3 and 34. 45. The IC card according to claim 30, wherein at least one of the plurality of pieces of application information is balance information relating to a commercial transaction. 46. The IC card according to claim 45, wherein at least one of the plurality of pieces of balance information is money amount information. 47. A display device for displaying a plurality of pieces of application information stored in an IC card, wherein said IC card has a memory means for storing a plurality of pieces of application information, wherein said memory means is a first memory means. A plurality of application information, the plurality of application information is stored in the first memory unit as data read and written by a program corresponding to each application information, the first memory The data created based on the data stored in the section is stored in the second memory section, and the data stored in the second memory section is read by a program common to a plurality of applications. An IC for reading application information of the IC card
Card reading means; display means for displaying the application information; and controlling the IC card reading means to read specific information from the plurality of pieces of application information stored in the second memory unit using the common program. And a control means for causing the display means to display the information. 48. In specific application information,
The control means controls the IC card reading means using a dedicated program corresponding to the specific application to read the specific application information stored in the first memory unit. 48. The display device according to 47. 49. A display device for displaying a plurality of pieces of application information stored in an IC card, wherein the IC card has a memory means for storing a plurality of pieces of application information, and the memory means is a first memory means. Having a memory unit and a second memory unit, the plurality of application information is stored in the first memory unit as data read and written by a program corresponding to each application information, the first application Data created based on the data stored in the memory unit is stored in the second memory unit, and the data stored in the second memory unit is one that is read by a program common to a plurality of applications. IC for reading application information of the IC card
Card reading means; display means for displaying the application information; program storage means for storing a common display control program for displaying a plurality of pieces of application information stored in a second memory unit of the IC card; The reading unit is controlled by using a common display control program stored in the program storage unit to read specific information from a plurality of pieces of application information stored in the second memory unit and display the read information on the display unit. A display device comprising: a control unit. 50. The program storage means has a special program corresponding to a specific application, and controls the IC card reading means by using the special program to store a specific program stored in the first memory unit. 50. A control unit for reading application information and displaying the application information on the display unit.
The display device according to claim 1. 51. The data stored in the second memory section is stored in the IC card as character code information in a predetermined format, and information corresponding to the character code information is displayed on the display means. 48. The method according to claim 47, wherein
The display device according to claim 50. 52. A display device for displaying a plurality of pieces of application information stored in an IC card, wherein the IC reads application information of the IC card.
Card reading means; display means for displaying the application information; and a common display control program for reading data in a format common to a plurality of applications stored in the IC card by the IC card reading means and displaying the data on the display means. And a program storage means for storing the information. 53. The program storage means has a dedicated program corresponding to a specific application, and the information of the specific application stored in the IC card is read by the IC card reading means and displayed on the display means. The display device according to claim 52, further comprising a program storage unit that stores the dedicated program. 54. The IC card stores a plurality of pieces of application information and display number information indicating the number of times the plurality of pieces of application information have been read out, and the control means stores application information having a large number of display times stored in the display number information. The display device according to any one of claims 47 to 53, wherein the display device displays the information in order from the first. 55. An apparatus according to claim 55, wherein said display device has input means for inputting an instruction relating to display, and said control means selects said plurality of pieces of application information based on the number of times said input means is pressed, and displays said plurality of application information on said display means. The display device according to any one of claims 47 to 54. 56. The display device according to claim 47, wherein at least one of the plurality of pieces of application information is balance information relating to a commercial transaction. 57. The display device according to claim 56, wherein at least one of said balance information is money amount information. 58. A terminal device for reading and writing a plurality of pieces of application information stored in an IC card, wherein said IC card has a memory means for storing a plurality of pieces of application information, and said memory means is a A first memory unit and a second memory unit, wherein the plurality of pieces of application information are stored in the first memory unit as data read and written by a program corresponding to each application information, and the first Data created based on the data stored in the memory unit is stored in the second memory unit, and the data stored in the second memory unit is one that is read by a program common to a plurality of applications. Read and write application information stored in the IC card. Card reading / writing means, input means for inputting an instruction relating to record updating, and, at the time of record rewriting, reading / writing of data stored in the first memory portion of the application information specified by the instruction from the input means at the time of recording / rewriting And control means for updating by means. 59. When recording and rewriting application information, the data stored in the first memory unit of the IC card is updated, and the data stored in the second memory unit is also updated. The terminal device according to claim 58. 60. At the time of recording and rewriting of application information, the process is normally terminated only when the updated data stored in the first memory unit matches the updated data stored in the second memory unit. The terminal device according to claim 58, wherein: 61. The data processing apparatus according to claim 58, wherein the data stored in the second memory section is stored in the IC card as character code information in a predetermined format. Terminal device. 62. An IC card system including an IC card, a display device, and a terminal device, wherein the IC card has memory means for storing a plurality of pieces of application information, and the memory means A first memory unit and a second memory unit, wherein the plurality of pieces of application information are stored in the first memory unit as data read and written by a program corresponding to each application information; The data created based on the data stored in the memory unit is stored in the second memory unit, and the data stored in the second memory unit is read by a program common to a plurality of applications. The display device displays a plurality of pieces of application information stored in an IC card, and displays the IC card. IC card reading means for reading application information of the memory, display means for displaying the application information, and control of the IC card reading means to obtain specific information from the plurality of application information stored in the second memory unit. The terminal device reads and writes a plurality of pieces of application information stored in an IC card, and stores the application information in the IC card. IC card reading and writing means for reading and writing the read application information, input means for inputting a record update instruction, and the first memory of the application information specified by the instruction from the input means at the time of record rewriting The data stored in the
An IC card system comprising: a control unit for updating by a C card read / write unit. 63. A storage device having memory means for storing a plurality of pieces of application information, wherein said memory means has a first memory part and a second memory part. The application information is stored in the first memory unit as data read and written by a program corresponding to each application information, and data created from data stored in the first memory unit is stored in the second memory unit. A storage device, wherein the data stored in the memory unit is read by a program common to a plurality of applications.