JPH05108906A - Ic card - Google Patents

Abstract

PURPOSE:To permit the time-limited reading and writing by inputting a pressword number. CONSTITUTION:The IC card consists of a control part 2 controlling each part of the IC card, a nonvolatile memory 3 storing a setting number and counting time or the like, an I/O device 4 for the reading and writing with a terminal equipment, a timer 5, an input part 6 inputting a code number, a comparison part 7 comparing the setting number with the code number, a RAM 8 temporarily storing code numbers, and a power supply part 9 for the isolate operation of the IC card.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card having a built-in CPU (central processing unit), which inputs a personal identification number and permits reading and writing with a time limit.

[0002]

2. Description of the Related Art An IC card is used by, for example, a user mounting the IC card on a terminal device and inputting symbols or numbers to the terminal device according to operation guides shown on the display of the terminal device. We are proceeding step by step to confirm the result and perform the next operation. Generally, the personal identification number is to be input to the terminal device by first operating the keyboard or the like. The reason for this is to ensure safety, in which the terminal device identifies the user by the personal identification number, and the IC
This is because only the owner of the card can use it and prevent unauthorized use by others. The terminal device accepts the next operation for the first time after the correct personal identification number is input to the terminal device. Therefore, when using an IC card, it is a necessary first operation to input a correct personal identification number from a keyboard or the like to the terminal device.

Conventionally, as a method of inputting a personal identification number to a terminal device, a method of inputting a personal identification number from a keyboard or the like of the terminal device, and an IC card mounted on the terminal device and a personal identification number using a key provided on the IC card It is known how to enter a number. Each of the two methods is characterized in that the terminal device collates the personal identification number with the setting number stored in the IC card for ensuring safety. For example, in the example of the method of inputting the personal identification number with the key provided on the IC card,
The patent publication (Japanese Patent Publication No. 62-56557) "Card" discloses "a card in which a means for inputting personal identification data and the like is integrated into a card state". Here, the card is loaded into the reading device, and the personal identification data is input from the input means configured integrally with the card. However, the reading device (terminal device) can input the personal identification data and the encryption (setting number) stored in the card. Read and collate. However, in the end, this method is the same as the method of inputting the personal identification number at the location of the terminal device when the card is used, such as the keyboard of the terminal device, and the two methods described above are All of them require an operation of inputting a personal identification number when using an IC card. Therefore, the conventional I
The C card has a problem in application to a field that requires quick operation, such as a prepaid card system.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an IC card which prevents unauthorized use of the IC card and ensures safety, and which can be quickly operated during use.

[0005]

A control unit, a non-volatile memory, a timer, a personal identification number input unit, an input / output unit for a terminal device, a comparison unit, a RAM, and a power supply are provided in an IC card. It is configured to have. The setting number and the counting time of the timer are preset and stored in the nonvolatile memory.

[0006]

With the above-mentioned structure, the IC card is normally set in a read / write prohibited state, and the user can give a personal identification number to the IC card before using the IC card. When the personal identification number is input to the IC card, the IC card collates the setting number stored in the non-volatile memory with the input personal identification number. When the correct personal identification number is input, the IC can read and write with the terminal device. It becomes a card. At the same time, the timer starts operating. When the counting time previously stored in the non-volatile memory has elapsed, I
The C card returns to the normal terminal device and the IC card in a state in which reading and writing are prohibited.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An IC card according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram of an embodiment of an IC card. In the figure, 1 is an IC card according to the present invention. A control unit 2 controls each unit of the IC card. For example, the comparison unit 7 compares the setting number stored in the non-volatile memory 3 and the personal identification number input from the input unit 6. A non-volatile memory 3 stores a setting number, a counting time of the timer 5, and a machine language program for controlling the IC card. Reference numeral 4 is an I / O (input / output device) through which data is read / written with a terminal device. Reference numeral 5 denotes a timer, which measures the counting time according to an instruction from the control unit 2. Reference numeral 6 is an input unit for inputting a personal identification number. Reference numeral 7 is a comparison unit, which compares the setting number with the personal identification number. Reference numeral 8 denotes a RAM (random access memory), which is used, for example, to temporarily store the input personal identification number and the like. Reference numeral 9 denotes a power supply unit, which supplies power to each of the units 2 to 7.

FIG. 2 is a block diagram of an embodiment of the input unit 6. Reference numeral 10 is a bar code reader, which emits a laser beam and emits a reflected light of a PIN code represented by a bar code to C
The personal identification number is entered by reading with a CD element.
Reference numeral 11 denotes a switch, which supplies the power supply unit to a bar code reader or the like. FIG. 3 is a block diagram of an embodiment of the input unit 6 different from that of FIG. In the figure, reference numeral 20 is a keyboard for inputting a personal identification number.

Next, the operation of the IC card of the present invention will be described. Normally, the IC card is in a standby state where reading and writing are prohibited. The power source is supplied only to the control unit and the like, and is in a state of low power consumption. Also, the IC in this standby state
Even if the card is attached to the terminal device, it cannot be used. The other state is an active state where the IC card can be read and written. In FIG. 2, the switch of the IC card in the standby state is pressed to input the personal identification number from the bar code reading device 10. In FIG. 1, the control unit 2 controls the comparison unit 7 to compare the setting number stored in the non-volatile memory 3 with the input personal identification number. If they match, the I / O (input / output device) The gate is opened and the gates are closed when they do not match. In the case of coincidence, the timer is activated based on the counting time stored in the non-volatile memory at the same time. The timer measures the counting time, and when the counting time has elapsed, notifies the control unit, and the control unit puts the IC card from the active state to the standby state. However, when the IC cards are attached to the terminal device and are in operation, the internal states of all the IC cards are saved in the nonvolatile memory and then the active state is terminated. Since the IC card in the active state can be read from and written to the terminal device, the IC card can be mounted on the terminal device and used without inputting the personal identification number. Further, in FIG. 3, a personal identification number can be input from the keyboard on the IC card, and the operation of each unit in FIG.
The C card can be activated from the standby state and used.

[0010]

As described above, according to the present invention,
The IC card can be provided with two states, a standby state and an active state. Normally, the IC card is in a standby state where reading and writing are prohibited, and the IC card in this state cannot be used. Therefore, illegal use can be prevented. When using an IC card, if you enter the correct PIN in advance in the standby IC card, the IC card will be in an active state where you can read and write only within the preset time, and when you put it on the terminal device No need to enter numbers. Therefore, unauthorized use can be prevented, safety can be ensured, and quick operation can be performed, which is useful for expanding the field of use of the IC card.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an IC card according to the present invention.

FIG. 2 is a block diagram of an embodiment of an input unit of an IC card according to the present invention.

FIG. 3 is a block diagram of an embodiment of the input unit of the IC card according to the present invention, which is different from FIG.

[Explanation of symbols]

 1 IC card according to the present invention 2 Control unit 3 Non-volatile memory 4 I / O (input / output device) 5 Timer 6 Input unit 7 Comparison unit 8 RAM 9 Power supply unit 10 Bar code reader 11 Switch 20 Keyboard

Claims (3)

[Claims] 1. An IC having a built-in CPU (central processing unit)
In the card, a control unit (2), a non-volatile memory (3), an I / O (input / output device) (4), a timer (5), an input unit (6), and a comparison unit (7). , RAM
(8) and a power supply section (9), which stores a setting number, a counting time, and a program for controlling an IC card in the non-volatile memory, and inputs a personal identification number from the input section,
The setting number and the personal identification number are compared, the counting time is counted by the timer, and reading / writing of the IC card via the I / O (input / output device) is limited to the counting time.
An IC card characterized by permitting. 2. The IC card according to claim 1, wherein the input section (6) comprises a bar code reader (10) and a switch (11). 3. The IC card according to claim 1, wherein the input unit (6) comprises a keyboard (20).