JPS61143891A - Ic card - Google Patents

Abstract

PURPOSE:To attain the input of data given from an IC card itself and to prevent the foul use of the IC card by providing a keyboard to the card and limiting the use of a specific area of a memory only to the owner of the IC card with input of an identification number. CONSTITUTION:A display device 2, a keyboard 4 and a communication contact 7 are connected to a microprocessor, i.e., a CPU10. Furthermore, a ROM11, a RAM12 and a timer 13 are connected to the CPU10. The ROM11 stores the working program of the CPU10. The RAM12 stores various data necessary for data processing of the CPU10 as well as the transaction data supplied from the keyboard 4. The timer 13 functions to erase the transaction data stored in the RAM12 after a fixed period of time. Both the RAM12 and the timer 13 are backed up by an internal power supply 14 different from a solar battery 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an IC card, and particularly to an IC card that allows data to be input from the IC card itself.

[Summary of the Invention] This invention makes it possible to input and output data on the IC card itself by providing a keyboard on the IC card, thereby making the IC card more versatile and expanding its range of use. If there is a need to restrict the use of cards, use of the cards can be restricted using a personal identification number for the benefit of the cardholder.

[Prior art] An IC card has a microprocessor inside the card,
It has a memory and is configured to be connectable to various data processing devices via communication contacts. These IC cards have a much larger storage capacity than conventional magnetic cards, so they can store information that could not be stored with conventional magnetic cards, and the internal microprocessor can perform various data processing. This has advantages such as being able to reduce the burden on the data processing device.

[Problems to be solved by the invention] By the way, conventional IC cards can input and output data to and from external devices via communication contacts, but there are no IC cards that allow data input from the card itself. There wasn't. Therefore, there is a problem in that the uses of the IC card are limited and the microprocessor cannot be used effectively. Therefore, it is conceivable to provide the IC card with a keyboard so that data can be input from the IC card itself.

However, if anyone can input data using a keyboard, there is a risk that the IC card will be misused by someone else. In particular, when an IC card is used as a transaction card such as a cash card or credit card, there is a risk that a large amount of cash may be withdrawn by another person without the IC card owner's knowledge, or that account details that should be kept secret may be withdrawn. There is a risk that others may find out.

This invention was made in order to solve the above-mentioned problems, and aims to provide an IC card that can input data from the IC card itself while preventing misuse by others. purpose.

[Means for Solving the Problems] This invention provides a keyboard for an IC card so that data can be entered from the IC card itself, and a password registered in advance in the memory for a specific area of the memory. Access is only possible when the number matches the password entered from the keyboard.

[Operation] In the present invention, the memory in the IC card has two areas: a first area that can be accessed only when the password entered from the keyboard matches a password registered in advance in the memory; and a first area that can be accessed regardless of the password. Since the IC card has a second area that can be accessed arbitrarily, the first area can be used only by the owner of the IC card, and the second area can be used by anyone.

[Embodiment] FIG. 2A is a top view of an IC card according to an embodiment of the present invention, and FIG. 2B is a back view of an IC card according to an embodiment of the present invention. In the figure, a display 2. Solar battery 3 and keyboard 4 that should be the power source
is provided. Keyboard 4 includes various keys for entering transaction data, as shown. As will be described later, this IC card 1 is configured to also function as a so-called electronic desktop calculator. For this purpose, the keyboard 4 is also provided with keys for various calculation commands. Further, the keyboard 4 is provided with a transaction key 5 for switching the IC card 1 from the computer mode to the transaction data input mode. On the other hand, a magnetic stripe 6 and communication contacts 7 are provided on the back surface of the IC card 1. The communication contact 7 is a contact for data communication with, for example, an ATV.

FIG. 3 is a schematic block diagram showing the structure of the internal circuit of the IC card shown in FIGS. 2A and 2B. In the figure, the microprocessor or CPU has the aforementioned display 2. A keyboard 4 and communication contacts 7 are connected. In addition, the CPU 10 includes a ROM 11 and a RAM
2 and timer 13 are connected. ROM11 is CPt
Jlo operating program (e.g., Figure 1A and Figure 1)
This is for storing the operating program shown in Figure B. The RAM 12 stores various data necessary for data processing by the CPU 10, and also stores transaction data input from the keyboard 4. Timer 13 is RAM 12
This is a timer used to erase transaction data stored in the transaction data after a certain period of time. RAM12 and timer 1
3 is backed up by an internal power source 14 separate from the solar cell 3. This is done in consideration of the fact that the supply of power from the solar cell 3 may be interrupted.

1A and 1B are flowcharts for explaining the operation of CPLllo shown in FIG. 3. Hereinafter, referring to FIG. 1A and FIG. 1B, the IC of the above embodiment will be explained.
Explain how the card works. First, in step S1, if there is a key input from the keyboard 4 of the IC card 1, the key input is transferred to the transaction key 5 in step S2.
It is determined whether or not it is due to If a key other than transaction key 5 is turned on, it is determined that the computer mode is in effect, and the process advances to step S3 to execute a computer processing routine. Note that this computer processing routine is the same operation as that performed in a conventional electronic desktop calculator and is well known, so a description thereof will be omitted. On the other hand, if the transaction key 5 is turned on, it is determined that the transaction data input mode has been selected, and the process proceeds to step S4. This step $
In step 4, it is determined whether input of transaction data is prohibited. As will be described later, the condition for prohibiting input of transaction data is when an incorrect password is input three times in a row. If entering transaction data is prohibited,
Proceeding to step S5, a display is displayed on the display 2 indicating that input of transaction data is not possible. Thereafter, the process returns to step S1. On the other hand, if the transaction data can be input, the process advances to step $6, and it is determined whether the transaction data is already stored in the RAM 12. If transaction data is already stored in the RAM 12, a message indicating that input of transaction data is not possible is displayed in step S5. On the other hand, if the transaction data is not stored in the RAM 12, the process advances to step S7, and a password input instruction is displayed on the display 2. Here, the owner of the IC card operates the keyboard 4 to input the password in step S8.

Subsequently, in step S9, the password is checked. This check is done in advance by checking the ROM of the IC card.
This is done by determining whether the password registered in 11 or RAM 12 matches the password currently input. If the PIN number 1 does not match, that is, if an incorrect PIN number has been input, the process proceeds to step S10, where it is determined whether or not an erroneous PIN number has been input three times in a row. If the number of times is 3 or less, the process returns to step S8 again. On the other hand, if an incorrect PIN number is entered three times in a row, the process advances to step S11 and the display 2
A message appears indicating that transaction data cannot be entered.

Then, in step 812, information indicating that transaction data is prohibited is stored in the RAM 12. In step S4 described above, it is determined whether input of transaction data is prohibited based on whether or not the above information is stored in the RAM 12.

On the other hand, if it is determined in step S9 that the PIN numbers match, the process proceeds to step 313, where a transaction number input instruction is displayed on the display 2. Here, the transaction number is a number representing the type of transaction; for example, a withdrawal transaction is 1. Deposit transactions are 2. Pregnancy exchange transactions are defined as 3. The owner of the IC card inputs this transaction number from the keyboard 4 in step S14. Subsequently, the process proceeds to step S15, and a transaction processing data input instruction is displayed on the display 2. Accordingly, the owner of the IC card performs step 81.
At 6, transaction processing data is input from the keyboard 4. For example, in the case of a withdrawal transaction, the withdrawal amount and the like are input. Subsequently, the process advances to step S17, and the step 814 described above is performed.
The transaction data input in S16 is then stored in the RAM 12.

After the operation of step 812 described above, or after step 31
After the operation in step 7, the process advances to step 818, and time measurement by the timer 13 is started. The process then proceeds to step S19, where it is determined whether the timer 13 has timed up, that is, whether a certain period of time has elapsed since the transaction data was registered. If a certain period of time elapses before the IC card 1 is inserted into the ATV, the transaction data stored in the RAM 12 is erased in step 820. The reason why registered transaction data is automatically deleted after a certain period of time is to prevent someone else from using the IC card for transactions if the card is lost after registration. be. Note that if it is assumed that the customer inputs transaction data at each home and then goes to a bank or the like, the above-mentioned fixed time may be set to about one hour. Further, the time-up time of the timer 13 may be arbitrarily set. On the other hand, if it is determined in step S21 that the IC card has been inserted into the ATV before the predetermined period of time has elapsed, the process proceeds to step 822 and the timer 13 is reset.

As explained above, according to the IC card of the above embodiment, the use of the area for storing transaction data in the RAM 12 can be limited only to the owner of the IC card, and on the other hand, The storage area can be used by anyone. Therefore, while the scope of use of the IC card can be expanded, it is also possible to prohibit the use of storage areas that should limit versatility by others.
Misuse of the IC card by others can be prevented.

FIG. 4 is an external perspective view showing an example of an ATV that conducts transactions using an IC card like the above embodiment. In the figure, the operation console on the front of this ATM 20 has a handling display 2.
0. IC card insertion slot 21° Slip bill extraction slot 22. CR
A T display 23 and a keyboard 24 are provided.

FIG. 5 is a schematic block diagram of the ATM shown in FIG. 4.

In the figure, IC force 7 reader 25. Customer service unit 26
．． The slip issuing unit 27 and the dispensing unit 28 are connected to the control unit 29
connected to. The IC card reader 25 is provided in relation to the IC card insertion slot 21 in FIG. 4, and is used to read data from the IC card inserted into the IC card insertion slot 21 and to write data to this IC card. It is. The customer service unit 26 is the handling display 20 and C shown in FIG.
It includes an RT display 23, a keyboard 24, etc., and uses these devices to display various operation guides to the customer and to accept key input from the customer. The slip issuing unit 27 is provided in conjunction with the slip bill outlet 22 in FIG. 4, and is for issuing a slip to the customer at the end of a transaction. The dispensing unit 28 is for dispensing banknotes stored therein to a customer during a dispensing transaction. The control unit 29 includes a microphone computer, etc., and an IC card reader 25. Customer service unit 26. It centrally controls each operation of the slip issuing unit 27 and the dispensing unit 28. Also,
An online transmission section 30 is connected to the control section 29 .

This online transmission section 30 is connected to a host computer at a center (not shown) via an input/output terminal 31. That is, the online transmission section 30 is for controlling data transmission between the host computer of the center and the control section 29.

FIG. 6 is a flowchart for explaining the operation of the ATV shown in FIGS. 4 and 5 during a withdrawal transaction.

The operation of the ATV during a withdrawal transaction will be described below with reference to FIG. 6.

First, when an IC card is inserted into the IC card insertion slot 21 of the ATM in step S21, the process proceeds to step 822, where the validity of the IC card is checked. If the IC card is not valid, a transaction not allowed message is displayed on the CRT display 23 in step S23, and the IC card is ejected from the IC card insertion slot 21 in step S24. On the other hand, if the IC card is valid, the process advances to step 825 and it is determined whether transaction data is already registered in the RAM 12 (see FIG. 3) of the IC card. If no transaction data is registered in this RAM 12, the process advances to step 826 and normal terminal input processing is performed. In other words, the customer uses the keyboard 2 of the ATV.
You will enter transaction data from step 4 onwards. When the input processing is completed, the process advances to step 824, and the IC card is ejected from the IC card insertion slot 1V. On the other hand, IC card RA
If the transaction data is registered in M12, the process advances to step 827 and the withdrawal amount stored in the RAM 12 of the IC card is displayed on the CRT display 23 of the ATM. Here, the customer checks whether the correct withdrawal amount is displayed, and if the correct withdrawal amount is displayed, press the confirmation key included in the keyboard 24 (Step $28) If the incorrect withdrawal amount is displayed. or if you wish to change the withdrawal amount, press the cancel key included in the keyboard 24 (step 532). If the confirmation key is pressed in step 828, the process advances to step 829, and after the payment unit 28 performs the payment processing, the voucher issuing unit 27 issues a voucher. Next, the process advances to step 330 and the transaction is recorded on the IC card. Then, in step S31, the RAM 12 of the IC card
Transaction data registered in will be deleted. Thereafter, the process advances to step S24 and the IC card is returned. On the other hand, if the cancel key is pressed in step S32, step 831
The transaction data registered in the RAM 12 is erased in step S24, and the IC card is returned in step S24.

In addition, in the flowchart of Figure 6, A in the withdrawal transaction
Although the operation of the TV has been described, programs for other transaction processing such as deposit transactions and transfer transactions may be configured in the same manner as in the flowchart of FIG. 6.

[Effects of the Invention] As described above, according to the present invention, since the IC card is provided with a keyboard so that various data can be input from the IC card itself, the scope of use of the IC card can be expanded. . In addition, since a specific area of memory is accessed only when the password entered from the keyboard matches the password registered in advance in the memory, the use of this specific area is restricted to IC. This can be restricted to the card owner, and can prevent other people from using this specific area and misusing the IC card.

[Brief explanation of drawings]

FIGS. 1A and 1B are flowcharts for explaining the operation of an IC card according to an embodiment of the present invention. FIG. 2A is a top view of an IC card according to an embodiment of the present invention, and FIG. 2B is a back view of the IIC card. FIG. 3 is a schematic block diagram showing the internal circuitry of the IC card shown in FIGS. 2A and 2B. FIG. 4 is an external perspective view showing an ATV that performs transactions using an IC card according to an embodiment of the present invention. FIG. 5 is a schematic block diagram of the ATM shown in FIG. 4. FIG. 6 is a flowchart for explaining the operation of the ATV shown in FIGS. 4 and 5 during a withdrawal transaction. In the figure, 1 is an IC card, 2 is a display, 3 is a solar cell, 4 is a keyboard, 6 is a magnetic stripe, 7 is a communication contact, 10 is a CPU 111 is a ROM, and 12 is an RA
M, 13 indicates a timer, and 14 indicates a backup power source. (2 others)

Claims (1)

[Claims] An IC card having a microprocessor, a memory, and a communication contact, wherein a password is registered in advance in the memory, and a keyboard, and the password entered from the keyboard and the memory are stored in the memory. a first area that becomes accessible in response to the determination means determining whether the password numbers match; The second
An IC card, characterized in that it has a region. (2) An IC card used by being connected to a transaction processing device, wherein the first area of the memory is an area for storing transaction-related data input from the keyboard. IC card described in Section 1. (3) The I according to claim 1 or 2, wherein the second area of the memory is an area used for executing arithmetic instructions input from the keyboard.
C card.