JPS6118083A - Collation data input system of identification card - Google Patents

Abstract

PURPOSE:To attain the collation of an identification card only with a conscious input and to prevent the collation done by a wrong input, by supplying the collation data through a keyboard during the operation of a collation key and performing the collation when the operation is through with the collation key. CONSTITUTION:A signal (a) is outputted from a key deciding part 20 incorporating an identification card with push of a collation key of a key input part 10 of the card. Thus a control part 21 including a CPU, etc. works and the signal (a) is stored in an output only. Then the identification number input is accepted from a register keyboard of an input part 1 and stored in a register of a memory part 22. When the collation key is released the identification number of an identification card of an EPROM15 restored by a restoring part 24 and the input identification number of the part 22 are processed by comparators 26 and 27, etc. to check the coincidence between the input number and the identification number. When the coincidence is detected, the identify of an owner of the identification card is displayed at a display device 3. Thus the collation of identification card is carried out only with a conscious input. In such a way, the collation performed with a wrong input is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a verification data input method for an identification card that prevents erroneous input of verification data in an identification card having a self-verification function.

[Prior art and its problems]

Recently, in place of ATM cards with embossed or magnetic stripes on the surface of the card, IC cards are installed inside the card to prevent it from being used without permission by others if lost or stolen, or from being counterfeited. Identification cards with embedded chips, so-called IC cards, are being used.

Such an IC card is provided with a connection terminal, for example, on the surface or edge of the card, and through this terminal, an external card verification terminal device and an IC chip inside the IC card are electrically connected, The terminal device compares the PIN number pre-stored in the IC chip with the PIN number entered by the card user from the keyboard of the terminal device to verify whether the card user is the principal. It has become.

However, the above-mentioned IC card has an IC on the card itself.
The advantage is that the structure is simple because only the chip is embedded, but a terminal device must always be used to verify the PIN number.For example, if credit cards can be used at retail stores, However, there was a problem in that an expensive terminal device had to be installed in each retail store, which was a big financial burden for the person installing the terminal device.

Therefore, the applicant installed a keyboard on the surface of the card, and when the user inputs a number from the keyboard, the number entered from the keyboard inside the card is compared with the pre-stored PIN number. Proposes an identification card that enables verification of a PIN number without using a terminal device by verifying whether the user is the person in question, that is, by providing the card itself with a verification function, A patent application was filed under the title "Identification Card."

However, since such an identification card is carried in a normal-sized pocket or bag, the PIN number is inadvertently input while the card is being carried and is automatically verified. In this case, the matching result is usually determined to be a mismatch because the wrong number was entered.
If this happens several times, there is a risk that the card itself will be invalidated and will no longer be usable.

[Purpose of the invention]

This invention was made in view of the above circumstances, and is a verification data for an identification card that prevents verification from being performed on the card unless the user consciously inputs the PIN number to prevent incorrect input. The purpose is to provide an input method.

[Key points of the invention]

That is, the present invention provides a keyboard for the identification card, and inputs verification data (PIN number) from the keyboard while pressing a first verification key for instructing verification, and then releases the first verification key. The verification operation is started by suppressing another second verification key, thereby preventing erroneous verification.

[First embodiment of the invention] The present invention will be described in detail below with reference to the drawings.

FIG. 1 is an external view of an identification card to which the present invention is applied, and 1 is the identification card body. A keyboard 2, a liquid crystal display device 3, and a connector 4 are provided on the front side, and an LSI (not shown) is embedded inside the card. Further, on the back side, an emboss (not shown) representing an identification code or the like is provided in a protruding manner.

The keyboard 2 is provided with a number key for inputting numerical data, a function key for instructing various calculations, and a stroke key 2a used for inputting a password.

Further, the connector 4 is used to electrically connect an external terminal device to the above-mentioned T and SI, and to enable data to be exchanged.

This identification card 1 has a total thickness of approximately 0.8R and is ISO
It is sized to meet standards and has the functions of both a regular card and a calculator.

The internal structure of this identification card 1 is shown in, for example, Japanese Patent Application No. 57-33272 filed by the present applicant, so its explanation will be omitted here.

FIG. 2 is a circuit block diagram of the present invention, and 10 is a circuit block diagram of the present invention.
A key input unit including a keyboard 2 inputs key operation signals based on key operations to a CPU (central processing unit) 11.

The CPU II has a clock/calendar circuit 12 and a ROM 13.
．． 11. A, M14, EEP-ROM (Electro
nic Erasable Programmable
A ROM (ROM) 15 and a display drive circuit 16 are connected.

The ROM 13 stores microinstructions for executing various instructions, and the RAM 14 includes registers for calculations and temporary storage.
Based on the control of ROM13, CPU II and RAM1
4, various operations such as arithmetic calculations are performed.

Then, the result of the above calculation and the number data input from the key input unit 10 are processed by the display drive circuit 16.
After being converted into data to be displayed on the liquid crystal, it is displayed on the liquid crystal display device 3.

On the other hand, the clock/calendar circuit 12 includes a crystal oscillator, a frequency dividing circuit, etc., and measures the current time, calculates the year, month, day, etc. based on the daily change signal, and displays the current time and the like on the liquid crystal display device 3. It is possible to display the month, day, etc.

EEP-ROMI 5 is a ROM that allows data to be rewritten by applying a predetermined voltage.
Like M, it can hold data.

Therefore, this EEP-ROMI 5 has a password,
Verification data such as membership number (hereinafter collectively referred to as PIN) is written in advance, and details will be described later, but the number entered by the card user and this EEP-ROMI
By comparing the password with the password stored in 5, it is verified whether or not the card user is the person in question.

Therefore, these CPU 1, clock-calendar circuit 1
2. The ROM 13, RAM 14, EEP-ROM 15, and display drive circuit 16 are formed on one chip as an LSI 17.

This LS 117 is supplied with power by a vapor-shaped battery 18.

FIG. 3 shows the LS 117 of FIG. 2 in a functional block diagram in order to facilitate understanding of the present invention. Note that the same parts as in FIG. 2 are given the same reference numerals.

The key discrimination section 20 is connected to the key input section 10 and decodes key operation signals inputted from the key input section 10 to perform key discrimination. This key discrimination section 20 includes a buffer 20a that temporarily stores key operation signals output from the key input section 10.
, includes a detection circuit 20b that detects whether or not the El key 2a is pressed, and outputs an output signal from line a when the 匝 key 2a is operated, and outputs an output signal from line a,
If the function key is operated, pass line b
The corresponding output signals are given to the control unit 2I from the respective output signals.

The control unit 21 includes a storage unit 22 configured with RAM.
, an arithmetic circuit 23, and an EEP-ROMI 5 are connected thereto.

The EEP-ROMI 5 includes a booster circuit 15a for boosting the supply voltage to about 21V during data writing to enable data writing, and an area N (15b) for storing a preset password. , an area M (15C) for storing the number of times there is a discrepancy as a result of comparing this password with the number input by the card user from the keyboard.

The PIN number stored in the area N (15b) above is
It is stored in an encrypted form to prevent forgery, etc., and when checking, the restoring unit 24 converts it into a normal binary coded 10
It is converted into a base number and temporarily stored in the buffer 24a. Note that in order to restore the encrypted password, it is restored using an encoder configured with, for example, a normal ROM.

Thus, control of data writing, reading, etc., and addressing of the EEP-ROMI 5 are performed by the control unit 21 via the pass lines c and d.

On the other hand, the storage unit 22 is provided with arithmetic registers consisting of x, y, and z, temporary storage registers consisting of AD, and the like. The storage unit 22 exchanges data with the EEP-ROMI 5 via path lines e and f, and also receives register designations, numeric data, and code data (constants) from the control unit 21 via the path line gsh. Input control is performed.

Note that the key input section 10 is stored in the A register in the storage section 22.
The number data (PIN) input from , B register shows the number of discrepancies stored in area M (15c) of EEP-ROMI 5, and C register co shows when the card becomes invalid. A flag is stored in C1, and the number of digits of the password entered from the keyboard 2 is stored in C1. The storage unit 22 is connected to a display processing unit 25 , and the display data stored in the storage unit 22 is displayed on the liquid crystal display device 3 after being appropriately displayed and processed by the display processing unit 25 .

The arithmetic circuit 23 is connected to the storage section 22, and performs various kinds of simulations using the X1Y and Z registers, and performs a "+1" operation on the B register to update the number of mismatches. These calculations are performed under the control of the control section 21 via the path line i.

Further, 26 and 27 are both comparison circuits, and the comparison circuit 26 and 27 are comparison circuits.
is for comparing or checking the contents of the buffer 24a and the contents of the register A. The comparison circuit 27 is
The contents of the B register and the constant “5” given from the control unit 21
”, and the number of discrepancies is “5”.
determine whether it has become. Further, the comparison circuit 27
It also compares the contents of register C3 with the constant "3" to determine whether the number of key inputs has reached 13. Then, the car pattern results from the comparison circuits 26 and 27 are both sent to the control unit 21.
given to.

Further, a counter 28 is connected to the control section 21 . This counter 28 is for displaying the "OK" display for only 10 seconds when a match is found as a result of the verification of the PIN number. Counting starts with the start signal, and 4 carries occur on line k, resulting in 10
The control unit 21 determines that seconds have elapsed.

Next, the operation of the embodiment of the present invention will be explained based on FIGS. 4 and 5.

FIG. 4 schematically shows the actions taken by the card user during verification. For example, when using this card as a credit card instead of shopping at a store and paying for it, first operate the AC key (all clear key) on keyboard 2 to clear the display. Then, while pressing the IF key 2a, a desired number is input using the number keys on the keyboard 2 (step St).

After entering the number, by releasing the key 2a (step SS), the internal circuit checks the pre-stored password and the key-in number, and if they match. is displayed on the LCD display 3.
"K" is displayed, and it becomes clear that the user of the card is the real user (step 84).

Therefore, if the "OK" message is displayed, the clerk assumes that the card user is the card user and just inserts the card into the embossing imprinter and creates a slip in the same way as a normal credit card.

If the numbers entered from the keyboard 2 do not match, rOKJ is not displayed, and the user operates the AC key (step S) to enter the number again.

Therefore, for example, if a discrepancy occurs five times in a row, the card itself will be invalidated as it is assumed that the user is not the original user, and "EE...E" will be displayed, disabling future use of the card. It is clearly indicated that it has become possible (step 5ll).

The occupation card of the present invention is used in this manner. Next, the operation of the circuit block diagram shown in FIG. 3 will be explained using FIG. 5.

When issuing a card, enter the PIN number in advance in EEP-ROM.
It is stored in area N (15b) of IS, and further, area M (15c) is cleared (step TI).

Then, during verification, the card user inputs the number using the number keys while pressing the 1 key 2a. At this time, B
While the key 2a is pressed, an output signal is given from the key discrimination section 20 to the control section 21 via the line a.
The control unit 21 determines that the snoring release key 2a is pressed (step Tt), and the data set thereafter is sequentially transferred from the key determination unit 20a to the storage unit 220A register as numerical data by the control unit 21. The information is input and displayed on the liquid crystal display device 3 (step T).

In step T4, each time data is input from the keyboard 2, the arithmetic circuit 23 inputs the CI of the C register.
is incremented by "+1", and the number of digits of the input data is stored in CI. Note that the contents of C1 are cleared after an AC key operation or verification operation.

Next, when the user releases the 1 key 2a after finishing inputting the number, the key discriminator 20 no longer outputs an output signal to the line a, and the process then proceeds to step T6.

In step T6, it is determined whether the content of CI, that is, the number of digits of the input data has reached "3". This is to prevent the user from accidentally releasing the key N key 2a while inputting the PIN number and entering the verification operation, and the contents of the CI are sent to the comparator circuit 27. given, control unit 2
It is compared with the constant "3" output from 1. If "self≦3", it is assumed that there is an input error and the process returns to step T.

After the display is cleared once, input becomes possible again. If rc,>aJ, the process advances to step T7, where verification is performed.

In step T, area N(
The encrypted password stored in 15b) is read out to the decryption unit 24, decrypted, and then temporarily stored in the buffer 24a. Then, the comparison circuit 26 compares the number stored in the A register and the password stored in the buffer 24a.

Now, assuming that the two match, step T is reached.

Proceed to EEP-ROMI 5 area M (15c
) is cleared, proceed to step T.

In step T9, in order to display "OK", "OK" is sent from the control unit 21 to the X register via the pass line h.
" by writing the character code corresponding to ", and further giving the character code in the X register to the display processing section 25,
"OK" is displayed.

When this "OK" is displayed, the control section 21 gives a start signal to the counter 28 and drives the counter 28 until a carry signal is output (step 'I', .).
When the carry number is issued after 10 seconds have elapsed, the control unit 21 erases the "OK" display by clearing the character code written in the X register (step T).
7. ).

For this reason, the "1 OK" display disappears in 10 seconds, making it virtually impossible to use it at the next store with the "OK" display displayed, and it can only be used once per verification. This can prevent abuse.

On the other hand, if there is a mismatch in step T, step T
Proceed to area M (1) in EEP-ROMI 5.
5c) is written to the B register via pass line e.

Then, step T1. Now, the above area M (15C)
The contents of B are cleared by -H, and in the next step T14, B
The contents of the register are incremented by "+1" by the arithmetic circuit 23. Thereafter, in step T'ts, the updated contents of the B register are written to area M (15c).

Next, in step TI6, "ERRORJ" is displayed to clearly indicate that there was a mismatch in step T7. That is,
By writing the character code corresponding to rERRORJ in the register and supplying it to the display processing section 25, rE
RRORJ is displayed.

Furthermore, step Tl? Then, the contents of the B register updated in step T0 are sent to the comparison circuit 27, and a comparison is made to see if the contents have reached "5". If the contents of the B register, that is, the number of mismatches has not reached "5", the display can be cleared by pressing the AC key, and then the number can be set again (step T).

However, step Tl? If the content of the B register is "5", the number of mismatches is "5", and the process proceeds to step T18, where card invalidation processing is performed.

That is, the control unit 21 writes a flag (1") to the C6 digit of the C register, and also writes l' to the X register.
-EE...E" is written in the character code to indicate that the card is invalidated.
・E” will be displayed to make it clear that the card cannot be used from now on.

Note that the PIN key 2a is not pressed in step T.
If any other key is pressed, step T.

Proceed to and perform calculations as a normal computer.

[Second Embodiment of the Invention] In the first embodiment described above, the verification operation is automatically entered by releasing the confirmation key 2a, but as shown in FIG.
In addition, a count key 2b is provided, and after inputting a number while holding down the IN key 2a, in this embodiment, the configuration of the key discrimination section 20 in FIG. Discrimination unit 2
This can be easily achieved by setting it to 0'. That is, the key discriminator 20' further includes a detection circuit 2 for detecting suppression of the key 2b.
0C and sends the output signal to the control unit 21 via line l.
give to

FIG. 7 shows the key input section 10. Only the key determination section 20' and the control section 21 are shown, and other circuits are omitted because they are the same as in FIG. 3.

FIG. 8 shows the operation of the card user in the second embodiment, and step U is added to the flowchart of FIG.
8. Step U is newly added.

That is, after once clearing the display with the AC key (step St), the user enters the password in step S while pressing the 1] key 2a, and when the number has been entered, the 1 key 2a is released (step SS).

Therefore, the user should check the display (step Ul), and if the input is incorrect, he/she can re-enter using the AC key, and if the input is correct, press the Kunizuki key 2b.
An instruction is given to start the verification operation (step U).

Then, as a result of the verification, if the PIN number and the entered number match, rOKJ is displayed (step 84).
, if they do not match, it is determined whether the card is invalid or not (step Sa).

Next, the operation of the second embodiment will be explained based on the flowchart shown in FIG. This flowchart has step V added in place of step T 4 and step T6 in the flowchart of FIG. 5, and steps that overlap with the flowchart of FIG. 5 are omitted.

The operations from step T1 to step T are as described above.
The explanation will be omitted here. In FIG. 9, the process advances from step T3 to step T, where it is determined whether or not the l key 2a is pressed.

Then, when the film is applied to the key 2a, step V is performed.

Then, it is determined whether or not the ■ key 2b has been pressed. In step V, the detection circuit 20C of the key discrimination section 20' detects whether or not the I] key 2b has been pressed, and a detection signal is given to the control section 21 via line 1. If the turn key 2b is not pressed, the process proceeds to step T, and if the B key 2b is pressed, the process proceeds to step T7, where the verification operation begins.

In this way, in the second embodiment, after the password is input from the keyboard 2, the verification operation does not begin until the turn key 2b is pressed, so the input data can be fully confirmed, and if an incorrect input is made, the display is displayed. Just clear it and enter it again.
It is possible to prevent the card from being invalidated due to incorrect input when used by the card user himself/herself.

In the above embodiment, numerical values are used as verification data, but the present invention is not limited to this, and alphabets, symbols, etc. may also be used.

〔Effect of the invention〕

As described above in detail, according to the present invention, while pressing the key (first collation key),
Since the 6-digit data (PIN number) is entered, it is possible to prevent the number from being entered by mistake while carrying the phone and automatically verified, and the number of digits of the number entered is It determines whether the value has been reached and starts the verification operation when the number of digits in the input data exceeds a predetermined value.
Even if the black key is released in the middle of entering a number, it can be prevented from entering the verification operation by mistake, and the card can be prevented from being invalidated due to a mistake in entering the PIN number while the card user is using the card. It can be prevented.

Furthermore, in addition to the Fl key (first verification key),
A key (second verification key) is provided, and by inputting the PIN number while pressing the main key, and then pressing the mouth key, the verification operation begins. Since you can confirm this, you can avoid making mistakes when entering your PIN.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the appearance of an identification card body according to a first embodiment of the present invention, Fig. 2 is a circuit diagram of the same example, and Fig. 3 is a functional representation of Fig. 2. Block diagram, Figure 4 is a flowchart for explaining the operation of the card user □ in the same example, Stripe 5 is a flowchart for explaining the operation of the same example, and Figure 6 is related to the second embodiment. FIG. 7 is a block diagram of the key discrimination unit and its surroundings in the same example; FIG. 8 is a flowchart for explaining the operation of the card user in the same example; FIG. The figure is a flowchart for explaining the operation of the same example. 1... Orimae card body, 2... Keyboard, 2a.
...Box N key, 2b...Original shell key, 3...Liquid crystal display device, 10...Key input section, 11...CPU,
13... Fa, 20 b, 20 c... Detection circuit, 22... Storage section, 23... Arithmetic circuit, 26.27
...Comparison circuit, 27...Counter.

Claims (3)

[Claims] (1) Key input means, in an identification card with at least a built-in integrated circuit, having a plurality of keys for inputting data to be verified and a first verification key for issuing a verification instruction; a first storage means for temporarily storing data input from the key input means; a second storage means for storing predetermined collation data;
a comparison means for comparing and verifying the contents of the storage means; a detection means for detecting whether or not the first verification key is pressed; and a detection means for detecting whether the first verification key is pressed by the detection means. is detected, the data input from the key input means is written into the first storage means, and when it is detected that the first collation key is released, the first and second collation keys are detected. 2. A verification data input method for an identification card, comprising: control means for controlling the comparison means to compare the contents of the second storage means. (2) The identification card includes a counting means for counting the number of digits of data input from the key input means, and a determining means for determining whether the counted value of the counting means has reached a predetermined value. Claim 1, further comprising: invalidating the data input from the key input means when the determination means determines that the counted value has not reached a predetermined value. Identification card verification data input method described in Section 1. (3) In an identification card with at least an integrated circuit built-in, a key input means having a plurality of keys for inputting data to be verified, and first and second verification keys related to verification instructions. a first storage means for temporarily storing data input from the key input means; a second storage means for storing predetermined collation data; and a first storage means for temporarily storing data input from the key input means; a comparison means for comparing and verifying; a detection means for detecting whether the first and second verification keys are each pressed; and a detection means for detecting whether only the first verification key is pressed. When detected, the data input from the key input means is written in the first storage means, and it is detected that the first collation key is released and the second collation key is pressed. and control means for controlling the contents of the first and second storage means to be compared by the comparison means.