JPS6175487A - Electronic device - Google Patents

Abstract

PURPOSE:To obtain an electronic device which is hardly used by stealth and has superior safety by operating a protecting means for memory erasure, etc., when the frequency of dissidence between input information and identification information attains to a specific value at a data processing part. CONSTITUTION:A memory counter CM5 having a resetting function is a magnetic bubble memory and counts and stored the frequency of dissidence between input number information RAM4b and password number information ROM4a. Further, the frequency of dissidence written in the memory part of the CM5 is reset when a password number stored in the ROM4a coincides with an input number. When the counted value of dissidence in the CM5 attains to the specific value continuously, an output pulse is sent to a protecting circuit ST6. The ST6 applies DC voltage continuously to the base of a switching transistor TrSW11, which is placed in the cutoff state. Therefore, a CPU3 and an I/O 2 are disconnected from a terminal (b) of a terminal device 9 and the operation is disallowed in the on-line system of communication with the head office.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic device, and particularly to a device useful for thin electronic devices such as card calculators, card radios, IC cards, ID cards, card memories, card games, and card computers. be.

Here, an IC card (also referred to as a data memory card, a computer built-in card, etc.) will be described as a typical example of an electronic device, but the present invention is not limited to this.

Conventional IC cards (cash cards, credit cards, ID cards, etc.) are only for identification and verification, and have a single function.
Although it was expensive, there were no measures against plagiarism. As a result, it had the disadvantage of being difficult to spread.

The present invention aims to eliminate such drawbacks and provide an electronic device that is less likely to be stolen and has excellent safety.

An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 is a block diagram of a microcomputer-embedded card device for cash cards (hereinafter referred to as ID) and an automatic cash dispensing machine (hereinafter referred to as CD), which are one embodiment of the present invention.

In the figure, 1 is a microcomputer built-in type cash card, which is an ID. 3 is a data processing device (hereinafter C
(referred to as PU), 2 is an input/output unit (hereinafter referred to as I/O), 4
a is a read-only memory (ROM, hereinafter referred to as MA) that stores the password information, 4b is a rewritable memory (RAM, hereinafter referred to as MB) for temporarily storing input information, and 4C is a memory for calculation. Rewritable memory (RAM, hereinafter referred to as MC), 5 is input number information and MA
A memory counter with a reset function (hereinafter referred to as CM) that counts and stores the number of discrepancies with the PIN information stored in 4a.
), and the number of mismatches is not erased and retained even when the power is turned off. The memory section of CM5 is a magnetic bubble memory. Further, the number of mismatches written in the memory section of CM5 is reset when the input information matches the password information stored in MA4a. When the number of mismatches counted by the CM5 reaches 3 consecutive times (even if it is interrupted midway, it is fine as long as it is continuous), the CM5 sends an output pulse to the protection circuit (safety circuit, hereinafter referred to as ST) 6. . Once this output pulse is applied to ST6, the switching transistor (hereinafter referred to as TrSW)
The DC voltage is continued to be sent to the base of TrSW 11, and the TrSW 11 is set to the CUT OFF state, thereby cutting off the connection between the CPU 3, I/O 2, and terminal b of the terminal (hereinafter referred to as TM) 9. 8 is a character display section (hereinafter referred to as LCD), which is used as a calculator display section and a balance display section. 7 is a numeric keypad input section for calculator input (hereinafter referred to as KEY),
It is also used for balance inquiries.

The technology for calculators, balance inquiries, etc. was patented by the inventor in 1986.
It has already been proposed in No.-69703.

10 is a paper type battery (hereinafter referred to as BATT) for supplying power to various parts such as the CPU 3. 20 is a cash dispenser (hereinafter referred to as CD); 21 is an input section for inputting a password and withdrawal amount (hereinafter referred to as IN); 22
TM PIN code match output (verification match) from CPU3
It is an output section (hereinafter referred to as OUT) that connects the line with the online system of the head office (bank, etc.) through terminal b of 9 and terminal B of TM23, and performs a series of processing such as payment of the withdrawal amount that is input next. be.

Next, the operation of this device will be explained.

PIN number information "1328" is written in advance in MA4a.

First, connect TM9 of ID1 to TM23 of CD20, respectively.

First time: When the number "1328" is input from the operation section of IN21, this input information is sent to I/O2 via terminal A of TM23 and terminal a of TM9. I/O2 further sends this information to CPU3. The CPU 3 temporarily stores this input information in the MB 4b.

Next, CPU3 receives ID1's own PIN code from MA4a.
1328'' is read out in synchronization with the readout from MB4b, and the outputs of MA4a and MB4b are compared to determine if they match or do not match. In this case, since they match, a match output is sent from CPU 3 to I/O 2. This coincidence output is sent to CM5 via I/O2, resets CM5, and is also sent from I/O2 to TrSW11 (currently in a conductive state), terminal b of TM9, and terminal B of TM23 to OU.
It is output to T22. Thereby, the OUT22 can connect the line with the head office and apply the withdrawal amount information input from the IN21 to the OUT22. The following operation is similar to that of a normal CD.

2nd time: When you enter the number information “1228” from IN21,
As a result of the same operation as above, a mismatch output is output from CPU3 to I/O2 via TrSW11, TM9, and TM23.
22. As a result, OUT22 becomes IN again.
21 to alert the operator to input the correct number information. In this case, it is not connected to the online line. Therefore, even if withdrawal amount information is entered from IN21, no payment is made. At this time, the mismatch output is applied from I/O2 to CM5, and CM5 counts up and stores "1".

3rd time: When you enter the number information “1428” from IN21,
Repeat the same action as the second time, this time CM5
counts up to "2".

Fourth time: When the number information "1128" is applied from IN21 to CPU3 via I/O2, a mismatch output is applied from CPU3 to each part via I/O2. As a result,
CM5 counts up to "3" due to this third mismatch output and sends an output pulse to ST6.

ST6 puts TrSW11 into the cut-off state and turns the I/O
2 and terminal b of TM9 is cut off. For this reason,
No matter what number input (even the correct password "1328") is applied from IN21 thereafter, neither a match output nor a mismatch output is sent to terminal b of TM9, and OUT22 cannot operate. Therefore, no matter how many times IN21 is operated from now on, or even if ID1 is once removed from CD20 and reinserted, CD20 will not operate with this ID1, and cash withdrawal will not be possible. Furthermore, it is not possible to repair the TrSW 11 of ID1 from the outside, so the ID serves only as a calculator from now on and cannot be plagiarized by others.

However, in the fourth session above, if IN21 says “13
28" (hereinafter referred to as the "4th provisional PIN"), this input information is transferred to the C through I/O2.
In this case, the CPU 3 sends a matching output to each unit via the I/O 2. Therefore OUT
22 is activated and cash can be withdrawn. At this time, since the coincidence output is also applied to CM5, the count number "2" stored in the memory section of CM5 is reset and returns to "0".

This ID1 can also be used as a calculator using KEY7 and LCD8. In this case, KEY7, I/O2, CP
Since U3, MC4c, and LCD8 are used, it can be used as a calculator even after TrSW11 is activated (that is, after three consecutive disagreements occur).

By doing this, the ID card reader (input number will be automatically incremented until a matching output is sent out; for example, if "1111" is not valid, "1112", "1
It is easy to make a card reader like ``113'', ``1211'', etc. If the PIN number is about 6 digits, it can be decoded in one day even if the PIN number is slow, and in a few minutes if it is 1 fast. The ID card PIN number was decoded by
Theft can be prevented and the reliability of the ID card can be greatly improved. In other words, in this example, the probability of matching a 6-digit to 10-digit PIN number within just 3 attempts is 1 in 10 billion to 1 in a million, which is almost nil. You don't have to worry about it even if it gets stolen or stolen.

In this embodiment, ST6 is terminated due to three consecutive mismatches.
Although we have shown an example of operating the
It may be more than or less than 1 time, and it may be non-consecutive.
Even if it is discontinuous, if the total number of matching mismatches exceeds a predetermined number, a protection unit (means) such as ST6 may be activated.

Next, another embodiment of the present invention will be described with reference to FIGS. 2 and 3.

FIG. 2 is a block diagram of an ID and a CD according to another embodiment of the present invention, in which the same numbers are the same as those in the previous embodiment.

ID1 of this embodiment is ID1 of the previous embodiment and TrSW11
The only differences are that there is no ST6 and that the output of ST6 is input to I/O2, but the other points are the same. In this example, C
When the count number in M5 reaches "3", ST6 switches to I/O2
The output is applied to TM9 to forcibly change the initial setting conditions of the verification software program of CPU 3, and a verification mismatch output is output to TM9 regardless of the input information. Therefore, OU
T22 does not operate, and the other parts operate as I in the above embodiment.
It is the same as D1.

Although this embodiment shows an example of changing the initial conditions of the comparison software program of the CPU 3, the invention is not limited to this, and ST6 can be used to erase or rewrite MA4a, cut off the power supply from BATT10 to the CPU3, etc. You may run it.

Next, FIG. 3 is a block diagram of a CD and an ID according to another embodiment of the present invention.

The numbers for each part in the figure are the ID and CD of the embodiment shown in Figure 1.
The same parts are given the same numbers. There is only one difference from the embodiment shown in FIG. That is TrS
The only difference is that W1 is interposed between terminal a and I/O2.

Therefore, in this embodiment, when a matching mismatch occurs three times, an output pulse is sent from CM5 to ST6, and ST6 then outputs the TrSW11 interposed between terminal a and I/O2.
is switched to the cut-off state, and the connection between terminal a and I/O2 is opened, so that the input information from IN21 cannot be applied to I/O2. In this example, a transistor is used as TrSW11, but this It is not limited to this, but may be a fuse or the like, and the fuse may be cut by ST6.

In the above three embodiments, a paper battery was used for the BATT10, but other batteries such as a solar battery or a rechargeable battery may also be used.Although a magnetic bubble memory was used as the memory section of the CM5, a magnetic core memory, a magnetic Tape memory, floppy disk memory, IC memory, RA with backup battery
It may be M, etc.

When used as a calculator, the MB4b may also be used as the MC4c, and the TM9 and TM23 were directly connected using conductors, but it was
-154082, it may be connected indirectly, and the power supply terminal may be connected to TM9 instead of BATT10.
, TM23. The memory section of CM5 may be any non-volatile memory whose count is not erased even if ID1 is removed from CD20.

Furthermore, the electronic device of the present invention is not limited to a card-type device, but may also be a case-type device, and by providing a magnetic tape on at least one surface (or a portion of one surface or part) of the card or case, it can be compared with the conventional magnetic tape type carrier. Compatible with Tsushiyu cards, etc.

Further, although the CD is shown as an example, it may also be an automatic teller machine (ATM), and the identification card may have a built-in communication device such as a radio, and the BATT 10, CPU 3, etc. may be shared, thereby reducing the size of the multifunction device. The output of ST6 may be sent to the CD 20 and an X-RAY generator (not shown) in the CD 20 may be activated to erase the MA 4a from the outside using X-rays or laser light (heat may also be used).

The present invention is not limited to application to cash cards, but can also be applied to electronic locks, credit cards, ID cards, passports, health insurance cards, hospital charts, automatic telephone bill payment cards, product identification cards, etc. be. Microcomputers include 1-chip microcomputers as well as C
The PU and memory may be integrated on separate chips.

Further, the fact that verification has become impossible may be displayed in text on the LCD 8, and the TrSW 11 may be provided at both terminals a and b.

As described above, according to the present invention, it is possible to obtain an electronic device that is less likely to be stolen and has higher reliability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a card device with a built-in microcomputer for a cash card and an automatic cash dispensing machine which are one embodiment of the present invention, and FIGS. 2 and 3 are block diagrams showing other embodiments of the present invention. . 1---Microcomputer embedded card device (ID), 2---
--Input/output unit (I/O), 3---Data processing unit (CPU), 4a---Memory (MA), 4b---Memory (MB), 4c---Memory (MC), 5----Memory counter with reset (CM), 6--
--Protection means (safety means, ST), 7---
Key input section (KEY), 8---Character display section (LCD), 9---Terminal (TM), 10---Paper battery (BATT), 11------
---Switching transistor (TrSW), 20-
------Cash machine (CD), 21------
Input section (IN), 22-------output section (OUT), 23----terminal (TM).

Claims (3)

[Claims] (1) A data processing section that includes a microprocessor, memory, etc., and a device that has one or both of the functions of input and output for exchanging codes such as data and instructions between the data processing section and external input/output devices. and one or more combiners, the data processing section determines whether the input information from the external input device matches the identification information written in the memory, and when the number of mismatches reaches a predetermined number, the data processing section operates the protection section. An electronic device characterized in that it operates. (2) The protection unit protects against memory erasure, memory readability, CPU destruction, I/O destruction, memory destruction, initial condition setting changes for program memory, program changes, input/output circuit interruption, and input information. 2. The electronic device according to claim 1, wherein the electronic device performs at least one of the following operations: causing a discrepancy output to be sent. (3) The electronic device according to claim 1 or 2, which is a card device with a built-in microcomputer.