JP2001118045A - Ic module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce adverse effects on environment by reusing an IC chip which was illegally operated in an IC module applied to a pachinko game machine, etc. SOLUTION: An IC chip 2 is covered with a storage body, and an optical sensor 3, a capacity detector 3, a wire break detector 5 and a piezoelectric element 6 are provided which detect whether the storage box has been unsealed. A function stop circuit 24 stops the function of the IC chip 2 when the unsealing of the storage body is detected. A cipher collating circuit 25 compares comparison cipher data D2 inputted to an input circuit 21 with regular cipher data D1 in a ROM 27 and a function recovery circuit 26 recovers the function of the IC chip 2 when both match each other. Consequently, if a 3rd person illegally unseals the storage body, the function of the IC chip 2 is stopped and when the comparison cipher data D2 are correctly inputted thereafter, the function of the IC chip 2 recovers, so that the module becomes usable again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a pachinko machine and an IC
The present invention relates to an IC module suitable for application to a device or equipment that requires high security (security against unauthorized use) such as a card.

[0002]

2. Description of the Related Art Conventionally, in this type of IC module, in order to prevent unauthorized operation (exchange, alteration, etc.) of the IC chip by a third party, the IC chip is covered with a housing and the housing is opened. Opening detection means for detecting whether or not the IC chip has been opened is provided. If the container is opened, it is assumed that an unauthorized operation has been performed on the IC chip therein, and the function of the IC chip is stopped. Module security was ensured. The IC chip that has stopped functioning in this way is difficult to find out what unauthorized operation has been performed.

[0003]

However, this has the following disadvantages.

[0004] First, since IC chips that have been subjected to illegal operations are discarded one after another, resources are wasted and wastes have an adverse effect on the environment.

Second, in order to enhance the security of the IC module, many types of opening detection means are often used at the same time. However, when a plurality of types of opening detection means are provided, any method is used. It is difficult to verify that the container has been opened, and it is difficult to grasp the tendency of unauthorized opening, and it is not possible to take an appropriate fraud prevention measure.

SUMMARY OF THE INVENTION In view of such circumstances, the present invention reduces an adverse effect on the environment by reusing an IC chip that has been subjected to an unauthorized operation to reduce waste, and provides a plurality of types of opening detection means. It is an object of the present invention to provide an IC module which can easily grasp the tendency of unauthorized opening even if it is provided and can be used for an appropriate fraud prevention measure.

[0007]

That is, an IC module (1) according to the present invention covers an IC chip (2) with a housing (10) and detects whether or not the housing has been opened. Detecting means (3, 4, 5, 6); and function stopping means (24) for stopping the function of the IC chip when the unsealing detecting means detects the opening of the container. D1) is stored in the memory (2)
7), and input means (21) capable of inputting the comparison encryption data (D2) is provided. The comparison encryption data input to the input means is compared with the regular encryption data in the memory to determine whether the two are different. A cryptographic collating means (25) for judging is provided, and a function restoring means (26) for recovering the function of the IC chip when the cryptographic collating means determines that the comparison encrypted data matches the regular encrypted data. It is composed. Here, as the unsealing detecting means, a light detector (3), a capacitance detector (4), a disconnection detector (5), a piezoelectric element (6), or the like can be used. The method of assigning the regular encrypted data is not particularly limited, and the regular encrypted data can be given for each product type, each manufacturing lot, each individual product, or the like.

[0008] By employing such a configuration, the function of the IC chip is stopped when a third party illegally opens the container, and thereafter, when the comparison encryption data is correctly input, the function of the IC chip is reduced. It works to recover and be reusable.

An IC module according to the present invention (1)
Comprises an IC chip (2) covered by a housing (10), and provided with opening detection means (3, 4, 5, 6) for detecting whether or not the housing is opened. First function stopping means (24) for stopping the function of the IC chip when the detecting means detects the opening of the container,
An electromagnetic wave detector (7) is provided, and second function stopping means (24) for stopping the function of the IC chip when the electromagnetic wave detector detects an external electromagnetic wave is provided. Is provided, and a memory (27) storing
Input means (21) capable of inputting comparison encrypted data (D2)
And cryptographic matching means (25) for comparing the comparison encrypted data input to the input means with the regular encrypted data in the memory to determine whether the two are different from each other. A function restoring means (26) for restoring the function of the IC chip when it is determined that the data matches the legitimate encrypted data is provided.

[0010] With this configuration, the function of the IC chip is stopped when a third party illegally opens the storage body or when the IC chip is erroneously operated by using an electromagnetic wave. When the data is correctly input, the function of the IC chip is restored so that the IC chip can be reused.

Further, in the IC module (1) according to the present invention, a plurality of types of the unsealing detecting means (3, 4, 5, 6) are used, and among these unsealing detecting means, the container (10) is unsealed. The storage means (29) for storing the unsealing detection means which has detected the is provided.

With such a structure, the information stored in the storage means can be used as a clue so that the method of opening the container can be estimated.

It should be noted that reference numerals in parentheses are for convenience showing corresponding elements in the drawings, and therefore, the present invention is not limited to the description on the drawings. The same applies to the column of “Claims”.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a control block diagram showing an embodiment of an IC module according to the present invention. FIG. 2 is a diagram showing a state in which the IC module shown in FIG. 1 is mounted on a board of a pachinko machine. FIG. 3B is a perspective view, FIG. 3B is a sectional view, and FIG. 3 is a flowchart showing an example of a reuse program.

As shown in FIG. 2, this pachinko machine has:
A board 9 for controlling the game operation is mounted, and the board 9 incorporates the IC module 1 according to the present invention. The IC module 1 has an IC chip 2,
A light detector 3 is attached near the IC chip 2. A metal housing 10 is mounted on the IC chip 2 and the photodetector 3 so as to cover them.
An electromagnetic wave detector 7 is mounted near zero. Further, as shown in FIG.
Are embedded so as to face the storage body 10 to form a capacitor.

As shown in FIG. 1, the IC module 1 includes a disconnection detector 5 and a piezoelectric element 6 in addition to the above-described IC chip 2, photodetector 3, capacitance detector 4, and electromagnetic wave detector 7. The IC chip 2 further includes a main control circuit 20, an input circuit 21, an output circuit 22, and an open detection circuit 2.
3. Function stop circuit 24, encryption collation circuit 25, function recovery circuit 26, ROM (read only storage device) 27, external electromagnetic wave detection circuit 28, RAM (read / write storage device) 29
And so on. Here, the light detector 3, the capacitance detector 4, the disconnection detector 5, and the piezoelectric element 6 are all connected to the IC chip 2 via the unsealing detection circuit 23, and the electromagnetic wave detector 7 is connected to the external electromagnetic wave detection circuit 28. Through the IC chip 2. In addition, the ROM 27
Product data (for example, an individual serial number, a manufacturing lot number, etc.) regarding the IC chip 2 is written, and regular encryption data D1 corresponding to the product data is written.

Since the pachinko machine has the above-described configuration, if the container 10 of the IC module 1 is opened illegally, four types of opening detection means, namely, the photodetector 3 and the capacitance detector 4 are provided. All or a part of the disconnection detector 5 and the piezoelectric element 6 detect the opening of the housing 10 and inform the opening detecting circuit 23 of the IC chip 2 of the detection.

That is, when the container 10 is opened, the light detector 3, which has been blocked from the external light by the container 10, receives the external light and the open detection circuit 23 of the IC chip 2.
Output an opening signal to Further, when the container 10 is opened, the capacitance of the capacitor formed by the container 10 and the capacitance detector 4 changes, so that when the capacitance changes, the opening of the IC chip 2 is detected. An opening signal is output to the circuit 23. Further, the disconnection detector 5 detects disconnection of conduction by opening the container 10 and outputs an opening signal to the opening detection circuit 23 of the IC chip 2. Alternatively, the piezoelectric element 6 detects the pressure that the container 10 receives when the container is opened,
An opening signal is output to the opening detecting circuit 23 of the IC chip 2.

Here, even if the container 10 is opened, all four types of opening detection means are not necessarily used for the container 1.
The opening of the container 10 is not detected, and depending on the method of opening the container 10, only a part of the opening detection means detects the opening of the container 10. For example, if the entire IC module 1 is covered with something to block external light, the light detector 3 does not receive external light even when the container 10 is opened.
Since the opening of 0 cannot be detected, only the other three types of opening detecting means (capacitance detector 4, disconnection detector 5, and piezoelectric element 6) detect the opening of the container 10. Further, when the container 10 is opened with little external force acting thereon, the piezoelectric element 6 is useless, and the remaining opening detecting means (the photodetector 3, the capacitance detector 4, the disconnection detector, etc.) I have to rely on 5).

In this manner, the opening of the storage body 10 is
Of the main control circuit 20
In the four types of opening detecting means, the opening detecting means (for example, the capacity detector 4, the disconnection detector 5 and the piezoelectric element 6) which actually detects the opening of the container 10 is written into the RAM 29, and the function stopping circuit 24 To stop the function of the IC chip 2. In response to this, the function stop circuit 24
The function of the C chip 2 is stopped. As a result, the third party
Since it becomes impossible to illegally operate the C chip 2,
Security of the C chip 2 can be ensured.

When an erroneous operation is to be caused in the IC chip 2 by using an electromagnetic wave, the electromagnetic wave detector 7 detects the electromagnetic wave and notifies the external electromagnetic wave detection circuit 28 of the IC chip 2 of the fact. Tell Then, the main control circuit 20 commands the function stop circuit 24 to stop the function of the IC chip 2, and the function stop circuit 24 stops the function of the IC chip 2. As a result, the third party uses the electromagnetic wave to
IC chip 2
Security can be ensured.

When the IC chip 2 whose function has been stopped is reused, it is determined whether or not the IC chip 2 can be reused according to the reuse program PRG shown in FIG. 3, and the IC chip 2 is reused depending on the result of the determination. Use or discard.

That is, first, the reuse program PRG
In step S1, the function of the IC chip 2 is restored.
For this, the comparison encryption data D2 is input to the input circuit 21 of the IC chip 2. Then, the main control circuit 20 instructs the encryption collation circuit 25 to determine whether the comparison encryption data D2 is correct. In response to this, the cryptographic matching circuit 2
5 reads the regular encrypted data D1 from the ROM 27,
The normal encrypted data D1 and the comparison encrypted data D2 are compared to determine whether the two are different. As a result, when it is determined that the regular encrypted data D1 matches the comparative encrypted data D2, it is determined that the comparative encrypted data D2 is correct, and a function recovery signal is output to the function recovery circuit 26. on the other hand,
When it is determined that the formal encryption data D1 and the comparison encryption data D2 do not match, it is determined that the comparison encryption data D2 is not correct, and the function recovery is performed to prevent an unauthorized recovery of the function of the IC chip 2 by a third party. No signal is output.
Then, the function recovery circuit 26 recovers the function of the IC chip 2 only when receiving the function recovery signal from the cryptographic matching circuit 25.

Next, the process enters step S2 of the reuse program PRG, and after confirming and analyzing the operation of the IC chip 2 whose function has been restored, based on those results,
In step S3 of the reuse program PRG, it is determined whether the IC chip 2 can be reused. As a result, when it is determined that the IC chip 2 can be reused, the IC chip 2 is reused. When it is determined that the IC chip 2 cannot be reused, the IC chip 2 is discarded. Here, the operation based on the reuse program PRG ends.

Therefore, when the comparison encryption data D2 is correctly input, the function of the IC chip 2 is restored and the IC chip 2 can be reused, so that disposal of the IC chip 2 wastes resources and adversely affects the environment. Things can be avoided. On the other hand, if the comparison encryption data D2 is not correctly input, the function of the IC chip 2 remains stopped.
It is impossible to recover the function of the C chip 2 illegally, and there is no danger that the security of the IC chip 2 is impaired.

Further, as described above, the opening detection means for actually detecting the opening of the container 10 among the four kinds of opening detection means is written and stored in the RAM 29.
This information is read, the method of opening the container 10 (that is, the method by which the container 10 was opened) is guessed, and the tendency of unauthorized opening is determined.
It is possible to improve the C module 1 and take an appropriate fraud prevention measure.

In the above-described embodiment, the case where the IC module 1 according to the present invention is incorporated in the board 9 of a pachinko machine has been described. However, the IC module 1 according to the present invention is applied to other apparatuses and devices. You can also. For example, as shown in FIG.
It is also possible to configure the IC module 1 by burying the IC chip 2 in the IC module 1.

[0029]

As described above, according to the present invention, I
The C chip 2 is covered and hidden by the storage body 10, and opening detection means (light detector 3, capacitance detector 4, disconnection detector 5, piezoelectric element 6, etc.) for detecting whether or not the storage body has been opened is provided.
A function stopping means (a function stopping circuit 24 or the like) for stopping the function of the IC chip 2 when the opening detecting means detects the opening of the container 10 is provided, and the regular encryption data D1 is provided.
Is provided, and input means (such as the input circuit 21) for inputting the comparison encryption data D2 is provided. The comparison encryption data D2 input to the input means and the regular encryption data in the memory are provided. D1 to determine whether the two are different from each other.
Function recovery means (such as a function recovery circuit 26) for recovering the function of the IC chip 2 when the cryptographic matching means determines that the comparison encrypted data D2 matches the regular encrypted data D1. Because it was provided and configured
The function of the IC chip 2 stops when a third party illegally opens the container 10, and the function of the IC chip 2 recovers and can be reused when the comparison encryption data D2 is correctly input. As a result, I
By reusing C chip 2 to reduce waste,
An IC module 1 that can reduce adverse effects on the environment can be provided.

According to the present invention, there is provided an IC chip 2 covered with a housing 10, and an opening detecting means (a light detector 3, a capacity detector, etc.) for detecting whether or not the housing 10 is opened. 4, a disconnection detector 5, a piezoelectric element 6, etc.), and a first function stopping means (a function stopping circuit) for stopping the function of the IC chip 2 when the opening detecting means detects the opening of the housing 10. 24), and the electromagnetic wave detector 7
And a second function stopping means (such as a function stopping circuit 24) for stopping the function of the IC chip when the electromagnetic wave detector 7 detects an electromagnetic wave from the outside, and the regular encryption data D1 is stored. A memory (such as the ROM 27) is provided, and input means (such as the input circuit 21) for inputting the comparison encryption data D2 is provided. The comparison encryption data D2 input to the input means and the regular encryption data D1 in the memory are provided. A cryptographic collating means (cryptographic collating circuit 25 or the like) for comparing and judging the difference between the two is provided, and when the cryptographic collating means determines that the comparison cryptographic data D2 matches the regular cryptographic data D1, the IC chip The function recovery means (function recovery circuit 26, etc.) for recovering the function 2 is provided, so that a third party can illegally open the container 10 or use electromagnetic waves. If an attempt is made to malfunction C chip 2, IC when the function of the IC chip 2 is also stopped, then, comparing the encrypted data D2 is entered correctly
Since the function of chip 2 is restored and can be reused,
It is possible to provide the IC module 1 that can reduce the adverse effect on the environment by reusing the IC chip 2 that has been subjected to the illegal operation to reduce waste.

Further, according to the present invention, a plurality of types of the opening detection means are used, and a storage means (such as the RAM 29) for storing the opening detection means of detecting the opening of the container 10 among the opening detection means is provided. Since the information stored in the storage means can be used as a clue to determine the opening method of the storage body 10, even if a plurality of types of opening detection means are provided, the tendency of unauthorized opening can be easily grasped and accurate. It is possible to provide the IC module 1 that can be used for a fraud prevention measure.

[Brief description of the drawings]

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

FIGS. 2A and 2B are diagrams showing a state in which the IC module shown in FIG. 1 is incorporated in a board of a pachinko machine, wherein FIG. 2A is a perspective view and FIG.

FIG. 3 is a flowchart illustrating an example of a reuse program.

FIG. 4 is a perspective view showing a state where the IC module shown in FIG. 1 is incorporated in an IC card.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... IC module 2 ... IC chip 3 ... Opening detection means (photodetector) 4 ... Opening detection means (capacity detector) 5 ... Opening detection means (disconnection detector) 6 ... Opening detection means ( Piezoelectric element) 7 Electromagnetic wave detector 10 Housing 21 Input means (input circuit) 24 Function stop means (function stop circuit) 25 Encryption check means (encryption check circuit) 26 Function recovery Means (Function recovery circuit) 27 Memory (ROM) 29 Storage means (RAM) D1 Regular encryption data D2 Comparison encryption data

Continuation of front page (72) Inventor Takakuni Shimizu 5-36-11 Shimbashi, Minato-ku, Tokyo F-term in Iwaki Electronics Co., Ltd. (reference) 2C005 MA05 MA28 NB03 SA12 5B035 AA13 BA03 BB09 CA01 CA38

Claims (3)

[Claims] An IC chip (2) is covered by a housing (10), and opening detection means (3, 4, 5, 6) for detecting whether or not the housing is opened is provided. Function stopping means (2) for stopping the function of the IC chip when the means detects the opening of the housing.
4), a memory (27) in which regular encrypted data (D1) is stored, and an input means (21) capable of inputting comparison encrypted data (D2)
And cryptographic matching means (25) for comparing the comparison encrypted data input to the input means with the regular encrypted data in the memory to judge whether the two are different from each other. An IC module comprising a function recovery unit (26) for recovering the function of the IC chip when it is determined that the IC chip matches the regular encrypted data. 2. An opening detection means (3, 4, 5, 6) comprising an IC chip (2) concealed by a housing (10) and detecting whether or not the housing has been opened. A first function stopping means (24) for stopping the function of the IC chip when the opening detecting means detects the opening of the container; and an electromagnetic wave detector (7) provided. Providing a second function stopping means (24) for stopping the function of the IC chip when an external electromagnetic wave is detected, providing a memory (27) storing regular encryption data (D1), Input means (21) capable of inputting (D2)
And cryptographic matching means (25) for comparing the comparison encrypted data input to the input means with the regular encrypted data in the memory to judge whether the two are different from each other. An IC module comprising a function recovery unit (26) for recovering the function of the IC chip when it is determined that the IC chip matches the regular encrypted data. 3. A storage means (3) for using a plurality of types of opening detection means (3, 4, 5, 6), and storing the opening detection means of the opening detection means which has detected the opening of the container (10). The IC module according to claim 1 or 2, wherein (29) is provided.