JPH0758516B2 - IC card device - Google Patents

Description

The present invention relates to an IC card device, and more particularly to a terminal device provided in an electronic cash register (hereinafter referred to as an ECR) or the like for reading data stored in an IC card. IC card device such as.

[Prior Art] Recently, a credit card using an IC card has been used instead of a conventional magnetic card. Such IC cards are issued by each credit company,
Not only are the types of data stored in each IC card different, but the IC card data read programs and data write programs may also be different.

On the other hand, some recent ECRs are configured so that they can process transactions using a credit card. In this case EC
R has a built-in or external card terminal device. The card terminal device has a built-in read program for reading data from the IC card and a write program for writing data in the IC card.

[Problems to be Solved by the Invention] As described above, the IC issued by each credit company
Since the card read / write programs are different from each other, it may happen that even if the IC card data of a certain credit company can be read and written, the IC card data of another credit company cannot be read and written. To be compatible with any IC card,
To be able to read and write the IC card data of each credit company, prepare a card terminal device compatible with each credit company's IC card, or read the IC card data of each credit company in the card terminal device. And it was necessary to have a plurality of programs built in so as to be writable.

Therefore, there is a drawback that the number of types of card terminal devices is increased or a large capacity memory is required to store each program.

Therefore, the main object of the present invention is to incorporate a read procedure program and a write procedure program for data in an IC card into the IC card so that the program can be loaded from the IC card to the terminal device during transaction processing, and An object of the present invention is to provide an IC card terminal device in which it is not necessary to prepare a program corresponding to each IC card.

[Means for Solving the Problems] The present invention is an IC card device composed of an IC card and a terminal device into which the IC card is inserted. The IC card stores a read / write procedure program for the terminal device. And a program sending means for reading the read / write procedure program according to a load instruction from the terminal device and sending it to the terminal device. On the other hand, the terminal device has a second storage means for storing the read / write procedure program sent from the program sending means, a detecting means for detecting whether or not an IC card is inserted, and an IC card being pulled out. And a erasing means for erasing the read / write procedure program stored in the second storage means in response to the detection of the failure.

[Operation] The IC card device of the present invention loads the read / write procedure program stored in the IC card into the terminal device by inserting the IC card into the terminal device during transaction processing, and based on the program, the IC card device By writing data to or reading data from the terminal device, it becomes unnecessary to store a plurality of types of programs for different IC cards on the terminal device side.

[Embodiment of the Invention] FIG. 2 is an external view of an IC card included in an embodiment of the present invention, and FIG. 3 is a schematic block diagram of the IC card.
FIG. 4 is a diagram showing data and programs stored in the ROM 2 shown in FIG.

First, the configuration of the IC card 1 will be described with reference to FIGS. 2 to 4. As shown in FIG. 2, the IC card 1 is provided with a plurality of contacts 2 for electrically connecting to the terminal device 3. Further, as shown in FIG. 3, the IC card 1 has a CPU 11, a ROM 12 and a RAM 13 built therein. In the ROM 12, as shown in FIG. 4, ID data, a read procedure program and a write procedure program are stored in advance. When this IC card 1 is inserted into the terminal device 3, the read procedure program and the write procedure program stored in the ROM 12 are sent to the terminal device 3 in response to a load command from the terminal device 3.

FIG. 5 is a schematic block diagram of the terminal device. The terminal device 3 is composed of, for example, an ECR or a credit authorization terminal (CAT). here,
The case where it is applied to ECR as a terminal device will be described. E
CR3 includes a CPU 31, a display 32, a printer 33, a line controller 34, a pin pad 35, an IC card reader / writer 36, and a keyboard 38.
Includes ROM 39 and RAM 40. The CPU 31 performs a registration process according to a program stored in the ROM 39 in advance. The display 32 displays data related to the product input from the keyboard 38 and the total price. The printer 33 prints those data on a receipt. The line controller 34
Data is exchanged between the CPU 31 and a host computer (not shown). The pin pad 35 is used to key in the personal identification number of a customer when the customer desires to process a transaction with a credit card. The IC card reader / writer 36 reads data from the IC card 1 and IC
It is for writing data to the card 1.

Card insertion detector 37 related to IC card reader / writer 36
Is provided. The card insertion detector 37 detects whether or not the IC card 1 is inserted in the IC card reader / writer 36. The keyboard 38 is used to input data regarding products purchased by the customer, cash data paid by the customer, and the like. The ROM 39 stores in advance a program necessary for the CPU 31 to perform registration processing. The RAM 40 stores data regarding the product input from the keyboard 38.

1A to 1C are flow charts for explaining the operation of one embodiment of the present invention. In particular, FIG. 1A shows the registration processing operation by ECR, and FIG. 1B shows the read / write procedure from an IC card. Shows the operation of loading the program into ECR.
The figure shows the operation when the IC card is pulled out from the ECR.

Next, a specific operation of the embodiment of the present invention will be described with reference to FIGS. 1A to 5. First, the operator uses the keyboard 38 to store data related to the products purchased by the customer.
Enter sequentially from. The CPU 31 of the ECR 3 causes the RAM 40 to store the data regarding each product input from the keyboard 38 and performs the registration processing. After completing the registration operation, the operator
Insert the IC card 1 into the card reader / writer 36. When the IC card 1 is inserted into the IC card reader / writer 36, the card insertion detector 37 detects that the IC card 1 is inserted,
A detection signal is given to the CPU 31. In response, CPU 31 carries out a program loading process.

That is, when it is determined that the IC card 1 is inserted in the IC card reader / writer 36 and the contact 2 is connected to the IC card reader / writer 36, the card ID data stored in the ROM 12 as shown in FIG. It is transmitted to the CPU 31 via the IC card reader / writer 36. This card ID data is for identifying each IC card. The ECR 3 determines that the IC card 1 has been inserted into the card reader / writer 36, and when the card ID data sent from the IC card 1 is received, determines whether it is a transactable ID. CPU31
Sends a load command to the IC card 1 if the ID data can be traded. IC card 1 that received the load command
Sends the read procedure program and write procedure program stored in ROM 12 to ECR3. ECR3 stores the program in RAM40.

The CPU 31 of the ECR3 activates the read procedure program stored in the RAM 40 to check the credit limit. That is, the CPU 31 sends a read command to the IC card 1 based on the read procedure program. When the IC card 1 receives the read command, it sends an ACK signal to the CPU 31 of the ECR 3 and also sends data indicating the credit limit stored in the RAM 13 in advance. If the total purchase amount is within the credit limit, the CPU 31 calculates a new credit limit based on the total amount and the credit limit data. Then, the CPU 31 activates the writing procedure program, and sends the writing command signal and new credit limit data to the IC card reader / writer 36 by the IC.
Write to RAM13 of card 1.

When new credit limit data is written to the IC card 1,
Sends an ACK signal to the CPU 31. When the CPU 31 receives the status of the ACK signal, it determines that it has completed normally, and the RAM 40
Clear the read procedure program and write procedure program stored in. If the writing of data to the IC card 1 is not performed normally, replace the IC card 1 with the IC.
Although the card is pulled out from the card reader / writer 36, the card insertion detector 37 detects that the IC card 1 is pulled out from the IC card reader / writer 36. In response to the detection signal from the card insertion detector 37, the CPU 31 clears the read procedure program and the write procedure program stored in the RAM 40 and displays an error as shown in FIG. 1C.

As described above, according to the present invention, the read procedure program and the write procedure program are built in the IC card, and the IC card loads each program to the terminal device side,
Since the loaded program is automatically deleted when the transaction processing is completed or the IC card is pulled out, it is not necessary to store a different IC card program in the terminal device side. Therefore, it is possible to eliminate the need for a large-capacity memory for storing a plurality of programs to support various IC cards. Furthermore, when the IC card is pulled out from the terminal device, the program loaded in the terminal device is erased, so that confidentiality can be maintained.

[Brief description of drawings]

1A to 1C are flow charts for explaining the operation of an embodiment of the present invention. In particular, FIG. 1A shows a registration processing operation by ECR, and FIG. 1B shows a read / write program from an IC card. The operation of loading the ECR is shown in Figure 1C.
It shows the operation when the card is pulled out from the ECR. Figure 2 shows I
It is an external view of a C card. FIG. 3 is a block diagram showing the configuration of the IC card. FIG. 4 is a diagram showing data stored in the ROM of the IC card. FIG. 5 is a schematic block diagram of ECR. In the figure, 1 is an IC card, 2 is a contact point, 3 is an ECR, 11, 31
Is a CPU, 12,39 is a ROM, 13,40 is a RAM, 32 is a display, 32 is a printer, 33 is a printer, 34 is a line controller, 35 is a pin pad, 36 is an IC card reader / writer, 37 is a card insertion detector, and 38 is Indicates a keyboard.

Claims (1)

[Claims] 1. An IC card device comprising an IC card and a terminal device into which the IC card is inserted, wherein the IC card comprises a first storage means for storing a read / write procedure program of the terminal device, Program sending means for reading the read / write procedure program from the first storage means and sending it to the terminal device in response to a load command from the terminal device, wherein the terminal device is a program for the IC card. Second storage means for storing the read / write procedure program sent from the sending means, detection means for detecting whether or not the IC card is inserted, and the IC card pulled out by the detection means Erasing means for erasing the read / write procedure program stored in the second storage means in response to the detection of that No, IC card device.