JP2002210179A - (dishonesty prevention) terminal plate for game machine and inspection machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unify the terminal plate of a game machine varied for respective makers, to suppress the alteration of a board, to keep the traces and to facilitate detection. SOLUTION: On the board 200 to be an alteration object, a connector 202 is covered with a connector cover 206 so that a conductor 212 is damaged or the like when the connector 202 is detached or the like. By vision and the measurement of a circuit constant value between electrodes TP1 and TP2, the alteration is detected. Since it is realized that the alteration without the damage or the like of the conductor 212 is difficult, it mentally acts on an altering person to give up the alteration itself. It is applied to a board covering structure for which a spacer and a flexible board are adhered and fixed to the component loading surface of the board and the vicinity of the connector is strengthened against the alteration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board to be controlled for remodeling or replacement, such as a board used for outputting a signal from a pachinko machine control device to a pachinko parlor management computer. More particularly, the present invention relates to a substrate provided with a member for preventing modification or replacement of the substrate.

In the present application, a component mounted on the surface or inside of a substrate is removed or replaced, a component is added to the surface or inside of the substrate, or a conductor pattern formed on the surface or inside of the substrate is removed. Or short-circuiting or adding a conductor pattern to the surface or inside of the board, replacing the board alone or together with its accessories with another board, and abandoning it prematurely without completing it. Collectively referred to as "modifications".

Further, in the present application, a person who intends to carry out "modification" and a person who has already carried out "modification" are both referred to as "modifiers". Whether the term "modified person" in the text means a person who has not performed the modification or a person who has already performed the modification has been understood in accordance with the context and the meaning and in accordance with the common sense of those skilled in the art.

[0004] In the present application, a substrate that can be a target for remodeling is referred to as a "substrate to be remodeled". In the present application, the description will be made by taking the pachinko board terminal board as an example, but this is for the purpose of embodying the description and further promoting the understanding of the reader,
It is not intended to limit the technical scope of the present invention. INDUSTRIAL APPLICABILITY The present invention is not limited to pachinko machines and other gaming machines, but can be applied to various types of boards whose modification or replacement is to be restricted or prevented.

In the present application, not only various circuit elements such as passive elements, active elements, and integrated circuits, but also functional parts such as connectors mounted on a substrate are referred to as “parts” mounted on the substrate.
Shall be applicable. Further, in the present application, a member attached to the substrate in order to prevent the remodeling of the substrate is also regarded as a “component” mounted on the substrate. Some embodiments employ measures to prevent such “parts” from being removed and replaced.

[0006]

[Prior Art] One of the necessary points in the management and operation of pachinko parlors is to avoid inciting the gambling of players,
In some cases, the player may not be unreasonably disadvantaged. As one of the measures to this end, the pachinko industry and the government offices and agencies that have jurisdiction over this will install devices on each pachinko machine that control circuits and mechanisms (so-called “panels”) that control the way the balls come out. A measure is taken to make it difficult for the player to easily operate the ball from outside. Normally, this control device is mounted on the back of a pachinko machine as a control board on which a CPU is mounted.

[0007] Also, in the operation and management of pachinko parlors, illegal balls by an inexperienced person who has slipped into the player.
It is necessary to prevent operation of the board. For that purpose, it is necessary to monitor the state of a mechanism (a so-called “frame”) that can be operated by a player, such as a firing handle, a ball rental machine, a door, and the like. Furthermore, in order to efficiently manage a pachinko parlor, it is necessary to centrally manage information about the operation status of the board, for example, the frequency of jackpots and the status of symbol confirmation.
From these needs, a device for outputting a signal indicating the state of the frame or the board is provided in each pachinko machine, and a signal from this device is received by a management computer called a hall computer and the like, and installed in the store. Generally, a system configuration is adopted in which the operating status of a large number of pachinko machines is grasped in real time. A signal output device from the pachinko machine to the management computer is called a terminal board or the like, and is generally mounted on the back of the pachinko machine.

FIG. 1 shows the system described above. The plurality of pachinko machines 10 installed in the pachinko parlors each include a circuit / mechanism 12, a control board 14, a frame terminal board 16
And a board terminal plate 18. The circuit / mechanism 12 is a frame and a board drawn together. The control board 14 is the above-described control device, and the frame terminal plate 16 and the board terminal plate 18 are the above-described signal output devices. The frame terminal plate 16 is a terminal plate for outputting a signal indicating the state of the frame.
Is a terminal plate for outputting a signal indicating the state of the board.
In addition, a plurality of pachinko machines 10 provided in the store,
It is under the management of the management computer 20.

The frame terminal plate 16 is essentially a terminal plate for outputting a signal from the pachinko machine 10 to the management computer 20. However, the conventional frame terminal plate 16 has a role of inputting a signal of a specific type such as inputting a signal for stopping the emission of a ball from the management computer 20 and supplying the signal to a circuit on the control board 14. Some had. On the other hand,
Since the board is exclusively controlled by the circuit on the control board 14, the board terminal board 18 is used as a terminal board for outputting a signal supplied from the control board 14 to the management computer 20. The control board 14 is a board on which devices such as a CPU are mounted, and the CPU controls the board. From the control board 14, a signal indicating the result, that is, a signal indicating the operation state of the board is output to the management computer 20 via the board terminal board 18. More specifically, the number and duration of “big hits”, the number of times “special electric
Information or the like for specifying the number of times the “symbol” is determined is output as a signal.

[0010]

Commercial games, such as pachinko machines, must be played fairly so that they do not unnecessarily entertain and have no unreasonable disadvantages for the players. However, various types of fraud, such as remodeling of pachinko machines, often occur. For example, there is a case in which a board terminal plate which is originally a signal output terminal plate is modified so that a signal for commanding an illegal or illegal operation can be supplied to a CPU on a control board. .

Typical methods for modifying the board terminal board and its surroundings include modifying the connector of the board terminal board, cutting, short-circuiting, or modifying the wiring pattern on the board terminal board, and modifying the board terminal board. Remove or replace parts, add parts on the board terminal board, remove the sealing seal of the caulking case that houses the board terminal board, remove the board terminal board itself from the pachinko machine, fake product / imitation There are various methods such as exchanging with a product, and forging or imitating the seal itself at that time, and sealing it again using it. Due to such various methods, the burden of the person in charge of the inspection for detecting the alteration of the pachinko machine has conventionally been very heavy.
Also, depending on the type and sophistication of the technique used, even a skilled inspector may not be able to easily find a modified pachinko machine.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is easy, low-cost, and quick to remodel various substrates typified by pachinko board terminal boards. Its purpose is to make it discoverable. For example, it is suitable to unify the external terminal boards of a pachinko machine that have been different for each maker, realize a high security board that is not tampered with, and provide an inspection machine that works with it.

[0013]

A substrate to which the present invention is applied, that is, a substrate to be remodeled, is a substrate on which components are mounted or a conductor pattern is formed on or on its surface. The present invention is characterized by including a trace holding member that holds a trace of modifying or attempting to modify the substrate, or by including an obstruction member that physically prevents modification of the substrate.

According to the preferred embodiment of the present invention including the trace holding member, traces such as modification of a substrate to be remodeled (for example, a terminal plate for a pachinko machine) can be left. Can easily and more reliably detect the fact of the modification. As a result, the labor of the inspector is reduced and the inspection work is made more efficient.
It is possible to contribute more easily and at lower cost than before. In addition, the rework will leave traces of it,
By providing the trace holding member in a form that can be seen by the remodeler, it is possible to psychologically work with the remodeler to discourage the remodeling of the board, thereby suppressing the remodeling itself, Each effect such as labor reduction becomes more remarkable.

According to the preferred embodiment of the present invention including the obstructing member, the modification of the substrate to be modified can be physically prevented. In addition, the provision of disturbing members is not only a psychological pressure to give up on remodeling, but also a psychological pressure that requires measures against disturbing members and a cost for measures for disturbing members. The remodelers may give up on the remodeling itself, given the economic pressure to do so. Therefore, the modification itself is less likely to be performed, and the inspection work by the inspector is labor-saving and quick. As described above, the present invention is useful for realizing fair management of a game store and appropriate enjoyment of a player more easily and at lower cost than before.

Further, according to the preferred embodiment of the present invention in which both the trace holding member and the obstructing member are provided, the effect of reducing the inspection labor becomes more remarkable. In addition, if the physical structure and circuit configuration are devised so that a single member has both functions of obstruction and trace retention, the effect of reducing inspection labor becomes more remarkable, and both functions are added. By doing so, enlargement and complication of the device configuration can be minimized. Further, according to an embodiment in which both a trace holding function and a jamming function are combined into one single member by devising a physical structure and a circuit around the target board to be remodeled, the trace holding and jamming functions are provided. , The enlargement and complexity of the device configuration can be minimized.

The trace holding member and the obstructing member in the present invention can be realized by devising the exterior structure of the substrate to be remodeled, by devising the shape, structure, arrangement and mounting circuit of the substrate to be remodeled, and There are those devising the interface means, those combining these as appropriate, and the like. Since these means can be realized by relatively simple measures, the present invention can be easily implemented and at low cost.

1. (1) Covering, etc. One of the embodiments characterized by the exterior structure is so as to obstruct the remodeling work and to leave traces even if a processing hand is applied. This is a mode in which the surface of the substrate to be remodeled is covered with a covering sheet such as a film, a flexible substrate, or the like. This covering sheet is preferably provided so as to cover substantially the entire part of the front and back surfaces of the substrate to be remodeled, on which parts are mounted. The parts are covered with the covering sheet because the remodeler often tries to contact these parts during the remodeling. More preferably, both the front and back surfaces of the substrate to be remodeled, including the part where no component is mounted, are covered. Thus, for example, a method of piercing a tool edge from a component (non) mounting surface of a substrate to be remodeled to access the component mounting surface, or a method of piercing a tool edge from a component (non) mounting surface to be present in an inner layer of the substrate to be remodeled A method of accessing a conductive pattern or a component to be accessed can be physically obstructed and the fact can be left as a trace.
However, when the substrate to be remodeled is a substrate on which components are mounted only on one side thereof, the conductor layer (eg, ground) may be formed over almost the entire surface on which the components are not mounted. Accordingly, the conductor patterns on the inner layer of the substrate to be remodeled are concealed, so that they are difficult to see, and a trace of the cutting edge of the tool remains, so that a similar effect can be obtained. A part (for example, a connector mounting part) of the component mounting part may be excluded from the coverage area by the covering sheet. Some parts and conductor patterns may be covered with resin by molding or potting. In this way, the exterior using the covering sheet can physically or psychologically prevent the remodeling or retain the trace without significantly increasing the size and complexity of the substrate.

In order to enhance the function of the covering sheet as an obstructing member, it is necessary to use a strong adhesive when fixing the covering sheet to the substrate to be remodeled (via a spacer). Good. Also, if a spacer made of an insulator or the like is interposed between the cover sheet and the board to be remodeled in order to reduce the contact / interference between the cover sheet and the components on the board to be remodeled, A strong adhesive is used as much as possible for bonding the spacer and the spacer and the substrate to be remodeled. By using a strong adhesive to make it difficult for artificial peeling to occur, it is possible to more suitably prevent a method of peeling off the cover sheet from the board to be remodeled and accessing components and conductor patterns on the board to be remodeled. . The spacer provided between the cover sheet and the substrate to be remodeled has a thickness not less than the height of the component on the substrate to be remodeled, and the component has a thickness such that the component located immediately below the covering portion can be accommodated. It is desirable to provide through holes or blind holes at corresponding positions. As a result, it is possible to prevent the cover sheet from being distorted due to contact and interference with the component, and furthermore, the bonding surface becomes flat, so that the bonding becomes stronger. When the conductor is exposed on the surface of the flexible substrate on the spacer side as described later, the use of the spacer having such a structure can also prevent electrical connection and coupling between the flexible substrate and the component.

In order to enhance the function as a trace holding member among the functions of the covering sheet, it is desirable to use a flexible substrate having a conductor layer formed on its surface or inner layer as the covering sheet. To allow a DC or AC electric signal to flow through the flexible substrate as needed,
An energization path is formed in the form of a pattern conductor, a through hole, a plate capacitor, or the like. The current path may be formed using only one surface of the flexible substrate, may be formed using both surfaces, or an inner layer may be used as a multilayer substrate. At specific portions (for example, both ends) of the energization path, for example, a patch-shaped or land-shaped detection electrode is provided so that an inspector can check the circuit constant value of the energization path with an inspection device such as a tester or a measuring device. Keep it. The number provided is not limited to a pair.

The circuit constant value of this current path, for example, a resistance,
Lumped constant values such as inductance and capacitance, distribution constant values such as line impedance and reflection coefficient, frequency characteristics,
Indices indicating temperature characteristics, etc. are often detected with respect to design values or initial values when the current path is distorted or broken as a result of distortion or breakage of the flexible substrate due to remodeling work, or when the flexible substrate is replaced Show as large a change as possible. Therefore, the inspector compares the traces of the remodeling by evaluating the circuit constant value measured at the time of inspection, using the design value determined by the pattern design of the flexible board and the initial value measured immediately before shipment as a reference value. Target can be easily detected. In particular, even if the remodeling was skillfully performed and the deformation or disconnection of the current path could not be visually recognized,
Since the trace of the modification can be detected from the circuit constant value, it is an effective measure for a subtle modification. Further, since the measurement result can be represented by a numerical value, the remodeling detection result has high objectivity. Furthermore, there is also an effect of psychologically forcing a remodeling person to give up on a remodeling.

Further, it is desirable to design an energizing path so that a measurable change appears in the circuit constant value with the remodeling operation. For example, if a part of the conduction path is made of a relatively thin pattern conductor or thin conductor layer, the probability of deformation, disconnection or breakage during remodeling work causing a change in circuit constant value increases, so the reliability of remodeling trace detection is improved. Increase.

Further, the circuit constant value of the current path formed on the flexible substrate can be used as a kind of identification information for holding and detecting the trace of the remodeling, especially the replacement. For example, if a part of the conducting path is formed as a relatively thin pattern conductor or thin conductor layer, the circuit constant value tends to vary during manufacturing, and the initial value of the circuit constant value varies for each product. Becomes In addition to the pattern design, it is desirable to set the manufacturing conditions such as the conductor layer formation environment so that the initial value of the circuit constant value varies. Therefore, the presence or absence of replacement can be suitably detected when comparing the measurement result of the circuit constant value at the time of inspection with the initial value of the circuit constant value to detect a trace of remodeling. Furthermore, even if the remodeler notices the variation in the circuit constant value, it is not possible to reproduce the variation in the manufacture of imitation products or counterfeit products of the flexible substrate, or to accurately reproduce the specific circuit constant value intended. Because it is difficult, it will be a physical hindrance to the remodeling, in addition to the shape setting described below, and will be a psychological pressure on the remodeler.

Further, it is desirable that the shape of the energization path is such that psychological pressure is applied to the remodeler so as to abandon the remodeling of the flexible substrate or a trace of the remodeling of the flexible substrate can be visually recognized. For example, by making the energization path a complicated or dense geometric drawing shape, there is no gap through which the tool passes, so it becomes difficult to process the flexible substrate, and it is difficult to imitate the flexible substrate. Forgery, counterfeiting, etc. are also difficult. Some mods will therefore give up the mod. Furthermore, when two types of pattern conductors that are orthogonal to each other are provided as part of the energization path, there is no difference in the likelihood of disconnection depending on the direction in which the remodeler pierces the cutting edge of the tool, and accordingly, in which direction Even after inserting the cutting edge, traces of remodeling remain. It is also effective to design energization paths so that various names, seals, numbers, and the like are represented, in order to prevent and detect imitation and forgery of the flexible substrate.

Further, a flexible substrate (and a spacer)
Is made transparent or translucent, the function of the flexible substrate as a trace holding member and the function as an obstruction member are both enhanced. In other words, by making the flexible substrate (and spacer) transparent or translucent, it is easy to visually recognize the change in component arrangement and conductor pattern due to the remodeling. The pressure to give up on remodeling. At that time, in order to prevent transparency from being impaired by the conductor of the current path formed on the flexible substrate, the conductor is made thinner or thinner, or the ratio of the wiring pitch to the conductor width is increased. If the conductor thickness, film thickness, wiring pitch, etc. are set so that the conductor cannot be easily viewed, the remodeler will sense that the current path is formed on the flexible substrate, and a measure to avoid disconnection of the current path Is easily prevented from being adopted. Conversely, if you set them so that you can see that the energization paths are formed on the flexible board, you can inform the remodeler of the difficulty of remodeling and apply psychological pressure in the direction of giving up remodeling Can be.

Also, an element which emits light or turns off when the current path formed on the flexible substrate is disconnected, a circuit for storing or holding the fact of disconnection, or the like may be provided on the flexible substrate, the substrate to be remodeled, the spacer, or the like. .

(2) Transparency (Translucent) of Substrate One of the preferred embodiments of the present invention which is characterized in the structure of the substrate to be remodeled is that the substrate to be remodeled is transparent or translucent. This is an embodiment in which remodeling by means such as adding components to the component non-mounting surface of the remodeling target board can be easily visually recognized. The other one is an embodiment in which a current path for inspection is formed in the substrate to be remodeled itself, which is distorted when the tool is touched and the wire is distorted when it is forcibly removed, so that traces of the remodeling are retained. is there. These can be implemented as a composite embodiment in which a current path for inspection is provided on a transparent or translucent remodeling target substrate. Also,
Both of these methods, ie, making the board to be remodeled (semi-) transparent and setting up a conducting path for inspection on the board to be remodeled,
It concerns the physical obstruction of modification and the function of keeping traces.

First, by forming the substrate to be remodeled from a transparent or translucent material, the component non-mounting surface can be seen through the component mounting surface from the gap between the mounted components and the formed conductor pattern. Becomes possible. Therefore, it is easy to visually observe the inside and the back side through the substrate to be remodeled, and to find traces or the like where the cutting edge is stabbed.
In particular, a transparent or translucent substrate to be remodeled, in which it is apparent that such remodeling is easily exposed, is particularly effective in preventing remodeling by adding components to the back surface or inner layer.

Next, by providing a current-carrying path for inspection on the substrate to be remodeled, the function of retaining the trace of the remodeling can be enhanced as in the embodiment in which the current-carrying path for inspection is provided on the flexible substrate. The portion where the current-carrying path for inspection is formed is preferably an externally exposed surface or a component non-mounting surface which is an inner layer of the substrate to be remodeled. When the whole of the conducting path for inspection is provided on the externally exposed surface, at least a pair of detection electrodes that are a part of the conducting path are also exposed to the outside,
The inspector can bring the probe or the like of the tester into direct contact with the detection electrode. Further, a structure may be used in which the portion including the detection electrode in the current path is provided on the externally exposed surface and the remaining portion is provided on the inner layer, and the two are coupled by a through hole or a flat plate capacitor using a substrate. In this structure, a part of the inspection conducting path can be hidden. Further, at least a part of the power supply path may be provided on the component mounting surface. Further, the point that the number of detection electrodes is not limited to one pair is the same as in the embodiment in which the remodeling target substrate is covered with the flexible substrate.

One of the advantages of providing a current-carrying path for inspection on the substrate to be remodeled itself is that the function of retaining the trace of remodeling can be strengthened without additional members such as a flexible substrate and spacers to be covered. It is superior in terms of manufacturing cost, product weight, and the like. Also,
By forming at least a part of the current-carrying path for inspection in the inner layer of the substrate to be remodeled, the current-carrying path for inspection is less likely to be found by the remodeler, and the remodeler needs to take steps to leave no trace of the remodeling. Because it ’s harder to pick
It can hinder the development of clever tricks that leave no trace. Furthermore, even if it is known to the remodeler that (a part of) the current-carrying path for inspection is provided in the inner layer, the mounted components and the conductor pattern for the formed circuit become an obstacle, Since the position, shape, and the like of the energization path cannot be easily seen, the function of physically hindering the remodeling or retaining the trace is enhanced. Furthermore, high-profile components such as connectors among the components mounted on the board to be remodeled are also
It is not necessary to consider physical interference in particular, and it is possible to design the power supply path to the area directly below it,
This is a more suitable measure for remodeling targeting high-profile parts. Further, since the detection electrodes are provided on the substrate to be remodeled, the wiring can be extended to detect unauthorized remodeling in a remote place, and collective monitoring of a plurality of substrates can be performed collectively.

Then, by combining the (semi-) transparency of the substrate to be remodeled and the formation of the current path, distortion and damage of the current path can be easily visually recognized through the substrate to be remodeled. The cost of the substrate to be remodeled increases accordingly.

(3) Concealment of energization paths and through holes, etc. One of the embodiments in which the structure of the substrate to be remodeled is devised is to use a conductor buried inside the substrate or a through hole for connecting between conductors in each layer, for inspection. This is an embodiment in which an energization path is formed and is hidden from a remodeler. Such a configuration not only has a function of physically hindering the remodeling by concealment, but also has a function of retaining a remodeling trace (especially a trace of replacement) using a current-carrying path for inspection, and at a relatively low cost. Is easy to implement.

This embodiment is desirably realized by using a multilayer substrate having a conductor layer also in the inner layer. In the present embodiment, preferably, a plurality of identification information voltage generating circuits (for example, voltage regulators) for generating the identification information voltage are provided, and a plurality of test electrodes used for the inspection person to check the identification information voltage are provided. The information voltage generating circuit and the inspection electrode are connected by wiring. The identification information voltage generation circuit preferably has a configuration capable of switching the identification information voltage as its output voltage. More preferably, the identification information voltage generation circuit is provided in an inner layer of the substrate.
In addition, the inspection electrode is provided on the outer surface of the board to be remodeled so that the inspector can check it with a probe of a tester. Provided. Furthermore,
The wiring connecting between the identification information voltage generation circuit and the inspection electrode is realized by making full use of pattern conductors and through holes formed on the substrate to be remodeled. Preferably, this pattern conductor runs around the inner layer of the substrate to be remodeled. More preferably, the position, shape, and the like of the pattern conductor related to the original wiring of the substrate are set so that the wiring in the inner layer of the remodeling target substrate is hidden.

According to such a configuration, the identification information for distinguishing the substrate to be remodeled in individual product units, lot units, specification units, and the like can be entered without using a method such as writing on the substrate to be remodeled or transmitting wirelessly. It can be applied to a substrate to be remodeled.
Furthermore, since the circuit or wiring for providing identification information is provided on the board to be remodeled in a form that deceives the eyes of a remodeler, the means for providing identification information is provided on the board to be remodeled itself. It is difficult for remodelers to realize. Further, even if the fact is realized, it is difficult to forge or forge including the hidden circuit or wiring. Therefore, according to this configuration, not only the modification is physically hindered, but also the trace of the modification (particularly, replacement) can be suitably held. It is to be noted that a technique such as writing on a remodeling target board or wireless transmission may be used in combination.

2. Modification sensor, etc. (1) Disconnection of cable, etc. As one of the embodiments belonging to the improvement of a part of the exterior structure of the modification target substrate or the contrivance of the mounting parts, the modification target substrate is replaced with another substrate (for example, a control substrate) or a device. There is an embodiment in which a connector for connecting to a computer (for example, a management computer) is improved. As an example, an embodiment in which a member that physically hinders removal of a cable or a connector is mounted on a board to be remodeled, and it is difficult to repair a board to be remodeled or a component mounted on the board to be remodeled due to removal of a connector or a cable. There are embodiments and the like that cause damage.
Preferably, a cover-like member that physically hinders the removal of cables and connectors is mounted on the board to be remodeled,
The cover-like member may be damaged when detached by a strong force, or the mutual fixing portion between the cover-like member and the substrate may be damaged. In this way, the removal can be physically hindered and the trace can be held in an easily visible state. Psychological pressures on "modulators to break when removed" will also be exerted on them.

Of these effects, in order to enhance the effects of physical obstruction and psychological pressure, it is desirable to make the cover-like member colored or colorless (semi-) transparent. this is,
This also leads to improved visibility of traces. In order to enhance the effect of retaining traces, the cover-like member is formed from a material that is easily broken, or the cover-like member is fixed to the substrate to be remodeled using a strong fixing means (for example, a strong adhesive). In addition, it is effective to provide a current-carrying path for inspection at a position where the cover-like member is fixed on the substrate to be remodeled, so that the current-carrying path is damaged (disconnected) upon removal.

(2) Magnets and the like As one of the embodiments belonging to the addition of components to the substrate to be remodeled, there is an embodiment having a sensor for detecting a signal direction.
This sensor keeps a specific state indicating that fact when a signal flows in the opposite direction to the original signal direction, etc.
It is a sensor for keeping the fact of modification with signal direction operation as a trace. The inspector can refer to the information stored or stored by the sensor during the inspection and detect the fact of the modification accompanied by the alteration of the signal flow. Examples of the configuration of this sensor include a sensor using a magnet and an irreversible motion mechanism, and a sensor using a directional element such as a photocoupler.

Among them, in the example using the magnet and the irreversible movement mechanism, when a reverse signal flows through the wiring on the substrate to be remodeled, the magnet moves and the (angle) position of the magnet reaches a specific position. Then, the movement of the magnet from that position is prohibited by the irreversible movement mechanism. The inspector recognizes that the (angle) position of the magnet is at the specific position, and can determine that a signal in the opposite direction has flowed through the wiring related to the sensor. . That is, since the fact of the reverse energization is fixedly displayed by the magnet, it can be easily detected that the signal flow flowing through the wiring may have been tampered with illegally. If a specific portion of the magnet is colored, visual recognition becomes easier.

In the example using a directional element such as a photocoupler, the signal flow does not hinder the flow of the signal when the direction of the signal in the corresponding wiring is the forward direction, that is, the original direction. The directional element is incorporated on the wiring so as to be blocked by the directional element. Thus, the directional element provides the function of interfering with the reverse signal transmission itself. It is also possible to provide the directional element with a function of displaying the signal transmission direction.

(3) Evaluation of Number of Signals As an embodiment in which the remodeling target board or the inspection machine thereof is devised, there is an embodiment in which a function relating to storage and evaluation of the number of signals is added to the remodeling target board or the inspection machine thereof. is there. In this embodiment, for example, detection of the number of signals, wiring to connect between the input connector and the output connector mounted on the remodeling target board directly or through various components,
A signal number abnormality detection circuit for storage, display, and the like is provided. If there is a contradiction between the number of signals detected from a certain wiring and the number of signals detected from another wiring (for example, if there is a significant mismatch between the number of winnings and the number of winning balls), Number of signals and signal receiving device (for example, management computer)
If there is a statistical or principle inconsistency with the information stored in the device, the signal path from the signal transmission source device (for example, control board) to the signal reception destination device via the signal number abnormality detection circuit In addition, it can be considered that the alteration has been performed on the circuits, components, and data in the signal transmission source device or the signal reception destination device. Therefore, by comparing the information obtained by the signal number abnormality detection circuit with each other or with the information obtained from the signal receiving device as appropriate, the fact of the remodeling can be easily detected.

The signal number abnormality detection circuit may be provided separately for each wiring, or a part thereof may be shared such as unifying the display function. Similarly, the remodeling is performed by supplying an inspection signal from the inspection machine to the remodeling target board, inputting an output obtained from the remodeling target board in response to the signal, and comparing the output with the inspection signal. Can detect the fact. The effect is further enhanced by using this type of inspection machine together with a remodeling target board provided with a signal number abnormality detection circuit.

3. Wireless transmission, etc. (1) Broadcasting of remodeling results, etc. In an embodiment in which the invention of the shape, structure, arrangement, and mounting circuit of the substrate to be modified is combined with the device of the interface means to the inspector, the substrate to be modified is There is an embodiment in which identification information for identifying each lot or each product type and monitoring results of various phenomena related to remodeling are wirelessly transmitted as responses. The term "response transmission" as used herein means that, when an inquiry is wirelessly received from an inspection machine or the like, a predetermined information is transmitted by automatically responding to the inquiry. Although the technology for wirelessly transmitting identification information itself has been studied and developed in various technical fields, in a preferred embodiment of the present invention, by adding not only identification information but also monitoring result information to a wireless transmission target, Multi-purpose utilization of the transponder on the board to be remodeled further reduces the labor of the inspector. In addition, a circuit for holding the trace of the modification so that the part or conductor which can be the target of the modification is made difficult to be touched by a resin mold by a resin mold or the like, and at the same time, information suitable for wireless transmission is obtained.

One example of the monitoring result information is information indicating that the plug at the end of the cable has been removed from the connector mounted on the board to be remodeled. This is information indicating that a cable for connecting to the device has been cut, and another example is information indicating that a change has been made to the signal transmission path. The detachment of the plug from the connector can be detected, for example, by incorporating a sensor for detecting the detachment of the plug into the connector and changing the content of the signal supplied to the transponder according to the output of the sensor, and the result is monitored. The result information can be supplied to the transponder. Cable disconnection can be detected by inserting wires for disconnection detection into the cable and changing the content of the signal supplied to the transponder in response to phenomena such as short-circuits caused by disconnection. The result can be supplied to the responder as monitoring result information. The signal flow can be modified by inputting a signal from around the circuit that regulates the signal transmission direction, evaluating the statistical validity (by time counting, comparing, etc.), and, based on the result, determining the signal to be supplied to the transponder. The content can be detected by changing the content, and the result can be supplied to the transponder as monitoring result information. It is desirable that the circuit for supplying the monitoring result information to the transponder be provided with a battery backup or the like so that the monitoring result information can be retained even when the power supply to the remodeling target substrate is cut off.

By employing such a configuration, the inspector can detect traces of various modifications with a small amount of labor.
In addition, since the transponder is used for a variety of purposes, the number of members required for implementation is small.

(2) Conversion of identification information, etc. As an embodiment belonging to the invention of the interface means for the person in charge of the inspection, the communication procedure between the inspection machine and the board to be remodeled,
In particular, some embodiments have a feature in adding an authentication procedure. The authentication procedure that can be executed in this embodiment includes a procedure for the inspection machine to authenticate that the substrate to be remodeled is genuine and has not been remodeled, and a remodeling that the inspection machine is a genuine inspection machine. There is a procedure for authenticating the target substrate. Preferably, these procedures are combined and executed as a mutual authentication procedure.

First, in order for the inspection machine to execute a procedure for authenticating that the substrate to be remodeled is genuine and has not been remodeled, the information contained in the code when the code is received from the inspection machine must be included. A function to convert and transmit the code based on the code is provided in the substrate to be remodeled. When executing this authentication procedure, the inspection device transmits a code including information designating the code conversion content, and receives a response from the code to the remodeling target board. If the code received as a response is a code that has been converted according to the code conversion specified in the code that was sent earlier, the response was sent genuinely without modification. Can be considered. Conversely, if the code received as a response is not a code that has been converted in accordance with the code conversion content specified in the previously transmitted code, modification (including replacement)
Can be considered suspect. Through the execution of these procedures,
The inspection machine can obtain information on the authenticity of the substrate to be remodeled and the presence or absence of the remodeling and provide the information to the person in charge of the inspection. In addition, the procedure for the remodeling target board to certify that the tester is a genuine tester is essentially a procedure for the tester to certify that the remodeling target board is genuine and has not been remodeled. This is a procedure in which the main customer is replaced in the procedure.
Through the execution of this procedure, the remodeling target board can obtain information on the authenticity of the inspection machine, make no response, or return a dummy response.

In the mutual authentication procedure combining the two, first, a question is transmitted from the inspection machine to the board to be remodeled. This is a transmission of an authentication request from the inspection machine to the board to be remodeled, and includes information designating code conversion contents. If the remodeling target board is a genuine product and has not been remodeled, the remodeling target board generates a response by transcoding the question according to the information in the question, and transmits the response. At this time, the inspection machine receives this response and checks it with the question transmitted to the destination to determine whether or not the response has been transmitted is a genuine product and the remodeling target board has not been remodeled,
Can be determined. Therefore, it can be said that the response transmitted by the remodeling target board to the question from the inspection machine is the transmission of the authentication request from the remodeling target board to the inspection machine.

Further, the inspection machine converts the code of the response based on the information included in the response, and transmits the converted code as a re-question to the board to be remodeled. Therefore, it can be said that the response from the inspection machine includes information designating the code conversion content.
In addition, it can be said that the re-question from the inspection machine is tentative authentication for the substrate to be remodeled.

If the board to be remodeled is a genuine product and has not been remodeled, the board to be remodeled generates a re-response by transcoding the re-question in accordance with the information during the re-question and transmits it. At this time, the inspection device receives the re-response and checks it with the re-query transmitted to the destination. Thereby, it can be determined whether or not the re-response is a genuine product and a remodeling target board that has not been remodeled. Therefore, it can be said that the re-response from the remodeling target board is the authentication to the inspection machine.

By performing such a mutual authentication procedure, it is possible to determine not only the remodeling / authentication of the substrate to be remodeled, but also the authenticity of the inspection machine. Interrogation of the question / response procedure by the modder using the receiving device can also be impeded. This leads to the prevention of the modification itself.

Further, of the signals exchanged between the inspection machine and the board to be remodeled, the signal is transmitted to the portion related to the communication control including the start bit / stop bit and the signal transmitted from the board to be remodeled to the board for remodeling. It is desirable that a portion other than the portion related to the remodeling monitoring result information has a fixed code length. In this case, by performing the determination regarding the code length of the received (re) question or (re) response, the (re) question or (re) response using the signal of the incorrect code length is detected. , A predetermined operation, for example, no response, dummy response, determination of abnormality, and the like. Furthermore,
If the code length of the (re) question from the “inspection machine” is not a predetermined length, in response to the “question” that is likely to be a fake, a bit string having the same code length as the “question” is obtained. It is desirable to send it as a dummy response. As a result, the elucidation work including the identification of the code length by the remodeler can be disturbed or obstructed. Also, the specification of the code conversion content is
For example, it can be performed by (re) question / response code specific bits or a combination thereof ("conversion code"). The remodeling target board and the inspection machine hold, for example, the same information that associates the conversion code with the code conversion content, and uses this information to specify the code conversion content based on the conversion code.

As described above, by performing a (mutual) authentication procedure involving code conversion and eliminating the need for use of fixed identification information, it is possible to reduce the labor of an inspector through the realization of a non-contact inspection. This has the effect of facilitating the detection and prevention of modifications. Further, even if the code conversion rule is identified by the remodeler up to its details, it can be dealt with by changing the code conversion rule from the next lot or the like, so that the manufacturer can easily deal with it. These are effects that cannot be obtained when the conventional RFID technology is simply applied to the present technical field. In addition, components mounted on the surface of the board to be remodeled and conductors that appear on the surface of the board to be remodeled,
Concealment by resin potting or the like so as not to hinder the transmission / reception of questions / responses, and to effectively use the inner layer of the substrate to be remodeled in order to reduce the number of components and conductors provided on the surface of the substrate to be remodeled. In order to make it difficult to decipher the conductor arrangement and the like in the inner layer, the surface of the substrate to be remodeled is arranged with solid conductors as much as possible, so that the effect of preventing remodeling and the effect of retaining the trace of remodeling are further enhanced. When transmitting a (re) response from the remodeling target substrate to the inspection machine, it is desirable to transmit monitoring result information.

4. (1) Subdivision, etc. Among the preferred embodiments of the present invention, one of the features of the structure of the substrate to be remodeled is that which has conventionally been a single substrate. It is subdivided into a plurality of vertically long substrates. Also, the material of the case is selected so that the case, its lid and the gap in the case are transparent. For example, both the case and its lid are formed of a transparent resin or the like, and the gap in the case is filled with a transparent resin or the like. Each vertical substrate is housed in a case such that both front and rear surfaces thereof can be viewed from a gap between the vertical substrates. As a method of fixing each of the vertically long substrates to the case, for example, a method of providing slits at a predetermined pitch at the edge of the case and sandwiching each vertically long substrate may be used.

According to this structure, both the front and back surfaces of each vertically long substrate can be visually observed through the lid or the side surface of the case. That is, there is almost no portion that becomes difficult to see when attached to a pachinko machine or the like. for that reason,
Traces of the modification can be easily found, and the labor of the inspector is reduced. Furthermore, by filling the gap in the case with transparent resin, etc., each vertically long board can be firmly fixed in the case and the remodeling can be physically hindered. It is also possible to detect the exchange for goods. Since the crimping case and its sealing seal are not required, a part of the conventional technique cannot be used, so that the psychological pressure effect is increased. Furthermore, since the board to be remodeled is subdivided, it is possible to completely or almost specify which signal has been tampered with only by inspecting which vertical board has been remodeled. Can contribute. By providing a signal direction regulating member or the like on each of the vertically long substrates, the function of preventing remodeling and holding traces of remodeling can be enhanced.

[0055]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. The following description is based on the configuration of the system and the base shown in FIG. 1 in order to keep the description simple. In addition, although the substrate according to each embodiment can be suitably used as the board terminal plate 18 of the pachinko machine 10, it can also be used in another type of device or as another type of substrate. . Further, in the following description, common or corresponding members between the related art and the embodiment of the present invention or between the embodiments of the present invention are denoted by the same reference numerals, and overlapping description may be omitted. .

1. Embodiment in which a power supply path for inspection is stretched (1) Flexible substrate coating FIG. 2 shows a substrate coating structure according to an embodiment of the present invention. The substrate 100 according to this embodiment is used as a board terminal plate 18 or the like. In the present embodiment, the component 1 on the front and back surfaces of the substrate 100 formed of an insulator is used.
Almost the entire surface 104 on the side on which the surface 02 is mounted is
It is covered with a flexible substrate 108 made of an insulator via a spacer 106 made of an insulator such as a plastic. Here, the component 102 is mounted on one surface of the substrate 100 (the component mounting surface 104) or embedded in the substrate 100, and is not mounted on the back surface of the substrate 100 (the surface not seen in the drawing). And Similarly, substrate 1
It is assumed that all circuit patterns to be formed at 00 are formed by conductors attached to the component mounting surface 104 or embedded in the inner layer of the substrate 100.

The thickness of the spacer 106 is set so as to be equal to or slightly larger than the height of the tallest component 102. This is because, on the one hand, a conductor (a pattern conductor 13 to be described later)
2) and the component 1 on the substrate 100
This is to prevent electrical contact and coupling from occurring due to direct contact with the element 02. Further, the spacer 106 is provided with a through hole or a blind hole 110 at a position corresponding to the mounting position of each component 102 so that the component 102 can be accommodated. Further, connectors 112 and 114 used for connection to the management computer 20 and the control board 14 are provided at the edge of the board 100. Notches 116 and 118 are provided at the edge of the spacer 106 in order to avoid conflict with these. The connectors 112 and 114 are also provided at the edge of the flexible substrate 108.
Notches 120 and 122 are provided so as to avoid collision with the notches 120 and 122. After placing and bonding the spacer 106 and the flexible substrate 108, the space between these notches and the connector is filled with a potting resin or the like (application of the embodiment shown in FIG. 20), or the flexible substrate 108 is damaged if the connector is forcibly removed. A connector cover may be provided (application of the embodiment shown in FIG. 6) to prevent the modification of the connector or the cable.

The spacer 106 is formed so that the corresponding component 102 is accommodated in each component accommodating hole 110, and the notches 106 and 108 are connected to the connectors 112 or 11 respectively.
4 is fixed to the component mounting surface 104 of the board 100 by adhesion so as not to conflict with the board 4. So that the mods cannot be easily removed
The adhesive used for this bonding should have as high a bonding strength as possible. The flexible substrate 108 has the notch 1
20 and 122 are adhesively fixed to the spacer 106 while being positioned with respect to the substrate 100 so as not to conflict with the connector 112 or 114, respectively. Similarly, the adhesive used for this bonding has a high bonding strength. In the drawings, reference numerals 124, 126, and 128 denote the substrate 100, the spacer 106, and the flexible substrate 1 respectively.
08 is a mounting hole provided at a corner portion, and mounting to the pachinko machine 10 or the like is performed by fastening using this hole.

The flexible substrate 108 has pattern conductors 130 and 13 on the upper surface and the lower surface in FIG.
2 is formed. In the example shown,
Each of the pattern conductors 130 and 132 has a snake-like or crank-like pattern. Flexible board 1
08 further includes a pattern conductor 130 and a pattern conductor 13
2 are electrically connected to each other, and this structure is realized as a through hole 134 in the illustrated example. The flexible substrate 108 has another through hole 136 for drawing one end of the pattern conductor 130 to the upper surface of the flexible substrate 108 in addition to the through hole 134. Flexible substrate 108
In addition to the pattern conductor 130, patch-like detection electrodes 138 and 140 and an electrode-connecting conductor 142 are formed on the upper surface in the drawing, and the detection electrode 138 is attached to one end of the pattern conductor 130. The detection electrode 140 is a conductor 142
Through the through hole 136 and the pattern conductor 132
Are connected to one end, respectively. Therefore, the flexible substrate 108 is provided with the detection electrode 138 → the pattern conductor 13
It can be said that a current supply path of 0 → through hole 134 → pattern conductor 132 → through hole 136 → conductor 142 → detection electrode 140 is provided.

The substrate 100 having the above configuration is
Modifications such as removal / replacement of the component 102 and removal / change of the circuit pattern can be performed by peeling off a member obstructing the modification of the component mounting surface 104 such as the flexible board 108 and the spacer 106, or by removing them. It must be at least partially cut (cut, shaved, etc.). However, since a strong adhesive is used for bonding the flexible substrate 108 and the spacer 106, it is difficult to peel them off. Even if it is forcibly peeled off, in most cases, the flexible substrate 108, the spacer 106 or the substrate 10
The 0 conductor or the like is damaged. Therefore, even if the flexible substrate 108 and the spacer 106 that have been peeled off during the remodeling operation are re-adhered after the remodeling operation, the inspector can easily recognize the fact of the remodeling etc. Can detect. This is because the flexible substrate 10
8 and the spacer 106 are cut off. Since a remodeling person who is short-sighted will be able to predict these “situations” by visual inspection before the remodeling, the structure according to the present embodiment has an effect of psychologically forcing the remodeling to be abandoned. It can be said that there is.

Even if the peeling operation and the cutting operation are performed in an ingenious manner and the damage of the flexible substrate 108 caused by the operation is insignificant and cannot be visually recognized, in the present embodiment, it is assumed that the Can be detected by a simple device. That is, since the above-described current path formed on the flexible substrate 108 is disconnected or distorted due to peeling or cutting, the circuit constant value (resistance, inductance, capacitance, etc.) ) And detecting a change from a value that should be, it is possible to discover that there is a suspicion that a peeling operation or a cutting operation has been performed. For example, if a disconnection occurs, the (specific) resistance value increases significantly. If distortion occurs, the resistance value and the inductance value slightly change.
This is, so to speak, equivalent to holding and detecting a trace of remodeling using the circuit constant value as a kind of identification information.

In order to make a measurable change in the circuit constant value due to the peeling operation or the cutting operation, the flexible substrate 108 including the pattern conductors 130 and 132 is required.
It is desirable that the conductor layer formed on the substrate be a thin pattern or a thin conductor layer, that is, a design that is liable to be damaged due to the remodeling work. The pattern conductors 130 and 13 are used to facilitate disconnection and distortion during remodeling work.
When conductors such as 2 are designed to be thin or thin, it becomes difficult to visually recognize those conductors. That is, it is difficult for the remodeled person to detect that the energization path is formed in the flexible substrate 108. Therefore, it is easy to prevent the modification from being performed so as not to affect the energization path. vice versa,
The thickness and thickness of the conductor are set to such an extent that the current path is barely formed in the flexible board 108, and it is difficult to process the wire so that it is not broken. In some cases, the intention is to give an impression to the mods.

In any case, the flexible substrate 10
8 make the current path as dense or complicated as possible,
Eliminating the gap through which the tool passes is effective. In the example shown in the figure, since the pattern conductor 130 and the pattern conductor 132 adopt a mesh pattern design orthogonal to each other,
Disconnection occurs regardless of the orientation of the cutting edge when the remodeler pierces a tool such as a cutter (the insertion of the cutting edge in a favorable direction can prevent the disconnection). Further, the pattern conductors 130 and 1 may be represented such that the name or seal of the manufacturer or the inspector or the affiliation or jurisdiction of the company or institution, or the name of the product, the product number, the lot number, the serial number, or the like is represented.
32 patterns can also be designed
This is effective in preventing and detecting forgery / counterfeiting of 08.

If the flexible substrate 108 and the spacer 106 are made transparent or translucent, it is possible to easily detect a change in the component arrangement or the circuit pattern on the component mounting surface 104 of the substrate 100. That is, the component 10 on the substrate 100
Modifications such as the addition of 2 and the addition of circuit patterns can be easily detected by inspection. In order to prevent the transparency of the flexible substrate 108 and the spacer from being damaged by the conductor, the conductor on the flexible substrate 108 is made thinner or thinner. Transparency can be obtained by increasing the ratio of the wiring pitch to the conductor width. It is desirable to set in consideration of.

Further, in order to find a suspicion that a peeling operation or a cutting operation has been performed from the measurement result of the circuit constant value, a reference value to be compared with the measurement result is required. As this reference value,
Although a design value determined by the product specification may be used, it is better to use an initial value measured immediately before product shipment or the like in order to enable more accurate modification detection. In addition, the remodeler imitates or forges the flexible substrate 108 itself,
The use of counterfeit products may mask the modification. In consideration of this, it is desirable to set the manufacturing conditions and the like so that the initial value of the circuit constant value varies. By doing so, the characteristics as identification information possessed by the initial values of the circuit constant values are strengthened. Can be found.

The circuit constants to be measured are not limited to lumped constants such as resistance, inductance and capacitance. For example, a distribution constant value such as a line impedance may be set as a measurement target. Detection electrode 138 and detection electrode 1
The voltage-current characteristics and the frequency characteristics measured between the circuit 40 and 40 may be used as an inspection index instead of or together with the circuit constant value. If three or more detection electrodes are provided and a plurality of sets of circuit constant values are measured by changing the combination of the detection electrodes, the accuracy and reliability of the modification detection will be further improved. An element that emits light or turns off when the current path formed on the flexible substrate 108 is disconnected, a circuit that holds the fact by a flip-flop or the like when the current path is disconnected is formed on the flexible substrate 108 or the substrate 100, or a spacer 106 is formed.
May be embedded. The connection between them and the current-carrying path on the flexible substrate 108 can be made with a conductive adhesive.

The illustrated energization path is the detection electrode 138.
Although it is a relatively simple path that can be drawn with one stroke from to the detection electrode 140, a more complicated path design may be made when the present invention is implemented. Further, a plurality of energization paths may be provided in parallel. A flat plate capacitor using the flexible substrate 108 as a dielectric may be formed in the middle of the current path. A flexible substrate in which a conductor is formed only on one surface (the upper surface in the drawing) may be used as the flexible substrate 108. In this case, since there is no conductor on the lower surface of the flexible substrate 108 in the drawing, the role of the spacer 106 for electrical insulation can be reduced, and the degree of freedom in design increases. In addition, regardless of the pattern conductor on the flexible substrate 108, the spacer 106 may have another form. For example, the present invention is not limited to the configuration in which the component receiving holes 110 are provided for each of the components 102.
2 may be accommodated in one component accommodation hole 110.

Further, in this embodiment, the component 102 is not mounted on the back surface (the surface hidden in FIG. 2) of the substrate 100. In order to prevent the component mounting surface 104 of the substrate 100 from being accessed from the rear surface of the substrate 100, and to be able to easily detect the component mounting surface 104, the rear surface of the substrate 100 should be a conductor over almost the entire surface, Alternatively, it is desirable to cover with a flexible substrate (and a spacer) in the same manner as the component mounting surface 104 side. When the entire surface is made of a conductor, the conductor can be used as a ground. Component mounting surface 1
It is desirable that the portion of the circuit conductor 04 where no pattern conductor for circuit wiring is formed be the entire surface conductor except for an insulating gap with the pattern conductor. Also, if the components 102 are mounted on both the front and back surfaces of the substrate 100, both the front and back surfaces are covered with the flexible substrate and the spacer shown in FIG.
desirable.

(2) Making the Substrate to be Remodeled Transparent (Semi) FIG. 3 shows the structure of a substrate according to an embodiment of the present invention.
The substrate 100 according to the present embodiment can also be used as the board terminal plate 18 or the like.

In the embodiment shown in FIG. 2, the flexible substrate 108 having the conducting path for the inspection is overlapped and fixed on the substrate 100 to realize the function of preventing the remodeling and holding the remnants of the remodeling. On the other hand, in the present embodiment, a current-carrying path for inspection is formed on the back surface of the substrate 100 or the component non-mounting surface 144 which is an inner layer. Further, in the present embodiment, the board 100 is mounted such that the component non-mounting surface 144 can be seen through the component mounting surface 104 from a gap between the component 102 and a circuit conductor pattern (not shown).
It is formed of a colorless or colored transparent or translucent material such as polyimide (hereinafter referred to as “transparency”).

In the present embodiment, as shown in the lower half of FIG.
It is constituted by detection electrodes 138 and 140 provided at both ends of 46. When this energization path is provided on the externally exposed surface, since the detection electrodes 138 and 140 are exposed to the outside, the inspector can directly contact a probe of a tester or the like with the detection electrodes 138 and 140.

When the current supply path is provided in the inner layer of the substrate 100, the detection electrodes 138 and 140 are exposed to the outside so that the inspector can contact a probe of a tester with the detection electrodes 138 and 140. The upper layer is connected to an inner layer conduction path (mainly the pattern conductor 146) by a through hole or the like. Alternatively, the detection electrodes 138 and 14
0 is provided in the inner layer similarly to the pattern conductor 146, and a conductor for contacting a probe or the like of a tester is pulled out from an end surface of the substrate 100 to be remodeled. Alternatively, the circuit constant value is measured without making the probe directly contact the detection electrodes 138 and 140 provided in the inner layer (the substrate 10 to be remodeled).
(Measurement is performed via a flat plate capacitor in which some of the layers are dielectrics).

In any case, the detection electrodes 138 and 14
0 is provided so that a person in charge of inspection can measure a circuit constant value using a tester or the like regardless of the position of the layer forming the current path. In addition, the energization path in the present embodiment can be variously designed and variously modified and devised as in the embodiment shown in FIG.

Therefore, in the present embodiment, among the effects obtained in the embodiment shown in FIG. 2, the same effects as those obtained by the energization path formed in the flexible substrate 108 can be obtained. In this embodiment, since this effect can be obtained without the flexible substrate 108 and the spacer 106, it is more advantageous than the embodiment shown in FIG. On the other hand, the embodiment shown in FIG. 2 is more effective in physically obstructing access to the component 102.

Further, if at least a part of the current path for inspection is formed in the inner layer of the substrate to be remodeled, the current path for inspection is less likely to be found by the remodeler. This makes it difficult for mods to take steps to avoid leaving traces of the modification, thus hindering the development of clever methods that leave no trace. Furthermore, even if it is known to the remodeler that (a part of) the conducting path for inspection is provided in the inner layer, the remodeler can easily determine where the conducting path enters the inner layer. Will not be able to see. In that regard, part 1
02 (directly below) can be used effectively. In addition, it is also effective to use a solid conductor except for a portion where the conductor pattern is formed and a gap for insulation from the portion where the conductor pattern is formed. Under such a conductor arrangement, the remodeler has to either give up the remodeling itself or perform the remodeling in preparation for the occurrence of disconnection. Whichever way is taken, the effect of preventing alteration or retaining traces of alteration occurs.

Further, in this embodiment, the substrate 100
Is transparent or translucent, so that the component non-mounting surface 144 side is visually observed through the component mounting surface 104 side of the substrate 100 to determine whether there is a disconnection in the current path, particularly the pattern conductor 146,
The trace of the piercing of the blade can be easily recognized. In order to ensure the transparency of the substrate 100 to be remodeled, the pattern conductor 146 is used.
It is desirable to appropriately set the width, thickness, wiring pitch, and the like from the same viewpoint as the conductor arrangement on the flexible substrate 108. Further, from the viewpoint of the transparency of the substrate 100, it is desirable to similarly consider and set the pattern conductor that connects the component 102 and the connectors 112 and 114 mounted on the substrate 100 to each other.

Further, as long as the transparency is not impaired,
Even if a part of (a part of) the current-carrying path for inspection is provided on the component mounting surface 104, there is no problem at all, and the modified trace retention detection performance is rather improved. When the substrate 100 is a multi-layer substrate and has a plurality of non-component mounting surfaces, a (part of) inspection conducting path is provided on the plurality of non-component mounting surfaces to improve the modified trace retention detection performance. Good. Further, if focusing on the purpose of preventing the modification by a method of adding components to the back surface or the inner layer, the current supply path for inspection shown in the lower half of FIG. It should be noted that this should be done. Conversely, giving up transparency, the glass epoxy substrate or the paper phenol substrate is used as the substrate 1
The current supply path for inspection may be formed as shown in FIG. In that case, it becomes cheap. In addition, it is also effective to use a solid conductor except for a portion where the conductor pattern is formed and a gap for insulation from the portion where the conductor pattern is formed.

Further, in the present embodiment, a current-carrying path for inspection is formed on the component non-mounting surface 144 of the board 100 itself. Therefore, if surface mount type connectors are used as the connectors 112 and 114, the connector 11
No mechanical / physical interference occurs between the power supply paths 2 and 114 and the power supply path for inspection. Therefore, the conflict / interference avoidance measures (notches 120 etc.) adopted in the embodiment shown in FIG.
There is no need to adopt. As a result, it is possible to design the pattern conductor 146 to extend to a position directly below the connectors 112 and 114, and therefore, in comparison with the embodiment shown in FIG. The embodiment is more effective. In addition, since the detection electrodes 138 and 140 are provided on the substrate 100, if the wiring is extended from the detection electrodes 138 and 140, unauthorized modification can be detected at a remote location, and a plurality of pachinko machines 10 can be collectively targeted. Centralized monitoring is also possible.

Flexible substrate 108 provided with a current path
To cover the substrate 100 provided with a current-carrying path, and the transparent or translucent substrate 100 (via the spacer 106).
This embodiment can be combined with the embodiment shown in FIG. 2, for example, by covering with a transparent or translucent flexible substrate 108. In addition, the flexible substrate 10
Instead of the coating with No. 8, a coating with a transparent resin may be used as described in JP-A-10-151253.

(3) Concealment of Inspection Path and Identification Information of Through Hole FIG. 4 and FIG. 5 show a substrate 100 according to an embodiment of the present invention.
1 shows the circuit and structure of the first embodiment. Substrate 100 according to the present embodiment
Is configured as a multi-layer board, in what form provides identification information that distinguishes the board 100 in individual product units, lot units, specification units, etc., and how to protect it from imitation and forgery It is characteristic in that.

Conventionally, as a method of giving identification information to a substrate, a number, a model name, a barcode, etc. are used for etching a conductor on the substrate, printing on the substrate, attaching a seal to the substrate, and the like. On the substrate. This method has a problem in that it is relatively difficult to forge them, and therefore, it is difficult to find a modification by means of counterfeiting, imitation and replacement of the substrate. Also, an element / circuit (RFI) that wirelessly transmits identification information (ID) as a response to the inquiry or voluntarily.
A method of mounting D) on a substrate has been conventionally studied. A typical implementation of this technique is to send a fixed ID from the board. Although this method can provide a substrate that is difficult to forge or imitate compared to methods such as number printing, it is possible to imitate the ID by decoding the signal transmitted from the substrate,
Again, further countermeasures against counterfeiting and counterfeiting are needed.

The identification information adding method in the present embodiment is as follows.
This method has a common aspect with the conventional method in that the method uses the conductor arrangement on the substrate. In addition, in that elements and circuits are provided on a substrate, the method has a surface common to the method relating to simple application of RFID. However, as described below, the identification information providing method according to the present embodiment provides the identification information by a circuit using the surface and the inner layer, and determines the location of the circuit and the conductor, and therefore, the identification information from anywhere on the substrate. This is to hide the readability from the eyes of the remodeler. In some respects, including the use of through-holes and the use of wiring inside the multilayer substrate, there are elements that are not obvious from the techniques conventionally used in this technical field or other technical fields. Note that the identification information providing circuit in the present embodiment is used instead of, or as a method for assisting, a method conventionally used in this technical field or other technical fields.

The identification information adding circuit according to the present embodiment
As shown in FIG. 4, a voltage regulator 148 and a detection electrode 150 are provided. The voltage regulator 148 is connected to a power supply circuit (not shown) on the substrate 100 (for example, the pachinko machine 1).
A power supply voltage is supplied between the positive power supply terminal 152 and the negative power supply terminal 154 from a power supply terminal of a tester used for inspection or wiring from 0 or a backup battery, and an identification information voltage is generated. The value of the identification information voltage is determined by the values of the resistors 156 and 158 attached to the voltage regulator 148. One of the resistors 156 and 158 is preferably a variable resistor so that the identification information voltage can be adjusted, and thus the identification information voltage is generated with an accurate value. In the figure, the resistor 158 is a variable resistor. Further, the generated identification information voltage is applied to the detection electrode 150 via the wiring 160 connecting the voltage regulator 148 and the detection electrode 150. The detection electrode 150 is provided on the surface of the substrate 100 in a form indistinguishable from a normal through hole as described later.
The identification information voltage is measured by an inspector at the time of inspection, for example, by bringing a probe of a tester into contact with the detection electrode 150. Note that the reference electrode 162 in the figure is an electrode that provides a reference potential when measuring the identification information electrode.
00 and the like. In this figure, the negative power supply terminal 15 is shown.
4, the reference electrode 162 is drawn, but may be provided at another location as long as a stable reference potential can be provided.

Preferably, a plurality of voltage regulators 148 are provided, and each of the voltage regulators 148 can obtain a different identification information voltage. It is desirable that a plurality of detection electrodes 150 be provided for each voltage regulator 148. The range of identification information that can be generated in the present embodiment depends on how many voltage regulators 148
Is used, the extent to which the identification information voltage can be changed by each voltage regulator 148, how many detection electrodes 150 are used, and the like. The range of identification information that can be generated is considerably wide, and is sufficient, for example, to assign different identification information to each individual product at the wiring design stage.

This will be described in more detail. First, the identification information voltage output from a certain voltage regulator 148 is set to N1 by adjusting the corresponding variable resistor 158 or the like.
It can be changed over steps. If N2 voltage regulators 148 are provided, N
The combinations of the identification information voltages generated by the two voltage regulators 148 are N1 to N2. In addition, there are N3 detection electrodes 150, and in wiring design, it is assumed that one selected from N2 voltage regulators 148 can be connected to each of the N3 detection electrodes 150. In this case, each detection electrode 15
The variety of connections of each voltage regulator 148 to zero is N
2 N3 streets. Therefore, the N2 voltage regulators 148 to N3 capable of switching the identification information voltage by N1 steps are provided.
The diversity of the identification information voltage that can be output using the detection electrodes 150 is (N1 to the N2) × (N2 to the N3). Suppose N1 = 256 steps, N2 = 2, N3 = 8
This value is 256 × 256 × 256 = 16
777216 patterns. N1 = 256 steps, N2 = 2
The design of N3 = 8 pieces is a realistic value suitable for realizing the board 100 at a low cost without increasing the number of parts and man-hours required for manufacturing the board 100. Please note.

The circuit shown in FIG. 4 is incorporated in the substrate 100 in the form shown in FIG. 5, for example. In FIGS. 5A and 5B, the cross-hatched portion at the periphery of the first layer of the substrate is a ground electrode. FIG. 5B is an enlarged view of a portion related to the circuit shown in FIG. 4 in the conductor / part arrangement of the first layer of the substrate shown in FIG. 5A. The negative power supply terminal 154 and the reference electrode 162 are connected to the first layer of the substrate (the component 10
2 is a through hole that forms part of or is connected to a ground electrode provided on the surface on which the semiconductor device 2 is mounted). The power supply terminal 152 on the positive side is a rectangular conductor here, and is connected to a power supply via a pattern conductor (not shown), a through hole, or the like. Further, FIG. 5C shows a cross section taken along a line AB of the portion. However, here, it is assumed that the substrate 100 is a four-layer substrate. 172, 17 in FIG.
4, 176 and 178 are the first layer to the substrate 100, respectively.
A fourth layer conductor, 180, 182 and 184 are insulators, respectively.

On the first layer of the substrate 100, for example, connectors (not shown) and components 102 connected to them are mounted. The first layer conductor 172 includes, in addition to the pattern conductor 164 for connecting the connector, the component 102, and the like to each other, a ground conductor, a negative power terminal 154 and a reference electrode 162 that are a part of the ground conductor, and the wiring illustrated in FIG. 160 includes a pattern conductor constituting a part thereof. The voltage regulator 148 and the resistors 156 and 158 are, for example, the first layer conductor 1
The components are mounted on the substrate 72, and wirings and the like for connection between them are also formed on the first layer of the substrate. Also, the first
The layer conductor 172 and the other layer conductor are connected to each other by through holes represented by white circles or black circles in the figure.

The through holes 16 represented by white circles in the figure
Some of the 6 are through holes for forming circuits for transmitting signals, such as from the connector to the component 102 and from the component 102 to another connector. In the present embodiment, for example, such a circuit wiring is realized by using the fourth layer conductor 178 and a part of the first to third layer conductors 172, 174 and 176. Some of the through holes 166 represented by white circles are
Through-holes 168, 170 for supplying the output of the voltage regulator 148 mounted on the layer to the conductors on other layers.
And constitutes a part of the wiring 160 shown in FIG. 4 together with a pattern conductor for applying the output of the voltage regulator 148 to the corresponding through holes 168 and 170.

The through holes represented by black circles in the figure are:
Among the pattern conductors provided on the second or third layer of the substrate, the conductor to which the identification information voltage is applied from the voltage regulator 148 via the through hole 168 or 170 is detected on the first layer of the substrate. This is for connecting to the electrode 150, and thus constitutes a part of the wiring 160. 5B and 5C, the output terminal of the voltage regulator 148 drawn on the upper side in FIG. 5B is connected to the first layer and the second layer through-layer. 5 through the hole 168, the second layer conductor 174, and the like.
(C) are connected to several detection electrodes 150 including the detection electrodes 150-1 and 150-3. FIG.
The output end of the voltage regulator 148 drawn on the lower side in FIG. 5B is connected to the detection electrode 150-2 in FIG. Including several detection electrodes 150.

The detection electrode 150 is not only indistinguishable in shape and structure from the through hole 166 for normal circuit wiring, but may have a voltage different from the voltage appearing in the through hole 166, but the voltage appears anyway. Also in this regard, the through hole 166 is easily misunderstood.
In this embodiment, remodeling is obstructed by concealing members related to the provision of identification information. In the present embodiment, preferably, the position of the detection electrode 150 is also devised in order to further confuse the detection electrode 150 with the through hole 166 and enhance the concealing effect. In the present embodiment, the fourth layer conductor 178 is used as a wiring for circuit connection. That is, there is no conductor related to the provision of identification information in the fourth layer, and when the substrate 100 is viewed from the opposite side of the component 102, at least a part of the wiring of the second and third layer conductors 174 and 176 It is hidden by the four-layer conductor 178. The fourth-layer conductor 178 is designed so as to make it difficult to visually recognize the wiring in the inner layer as much as possible by leaving a large amount of conductor, forming a complicated pattern, or the like. By doing so, in the present embodiment, the hiding effect is further enhanced,
The function of remodeling obstruction has been enhanced.

Furthermore, the remodeler creates a fake product or a fake product without noticing that the identification information is provided using the through-hole, and removes the original substrate 100 from the pachinko machine 10 or the like to make the fake product / fake product. There will be a method of attaching goods instead. In that case, the inspector only checks the potential of the identification information through hole (detection electrode 150) whose position and voltage value are known in advance,
The fact of the exchange can be detected. That is, the function of retaining the remodeling trace is realized. If measures such as numbering by etching of the first layer conductor 172 and mounting of the RFID function are also used, the remodeling obstruction effect due to concealment and the remodeling trace holding effect will be more remarkable.

In principle, a configuration in which the through hole 166 for the circuit wiring also serves as the detection electrode 150 can be realized. The number of the detection electrodes 150 is not limited to eight in FIG. 5A, but is within a limit range due to physical factors such as the area of the substrate 100, but more detection electrodes 150 can be provided, and identification information can be provided. This is desirable in terms of complexity and forgery difficulties. In terms of complicating the identification information and making it difficult to forge, it is desirable that the output accuracy of the identification information voltage be as high as possible.
It is better to have as many as possible. In the above example, the voltage regulator 148 is provided on the first layer. However, if a circuit for generating the identification information voltage is embedded in the inner layer of the substrate 100, the existence of the circuit is known to the remodeler. The danger is reduced and the danger of knowing what value the identification information voltage is is also reduced, so that it is difficult to decode the identification information. Further, the value of the identification information voltage is preferably equal to or close to the voltage practically used on the substrate 100. Thus, it is possible to make it difficult to understand where the identification information voltage appears. Further, if a voltage practically used in a circuit on the substrate 100, such as a power supply voltage or a ground potential, is used as a component of a series of identification information voltages, it becomes more difficult to decode the identification information. By increasing the number of types of identification information voltage by such a method, more complicated identification information can be obtained without increasing the number of voltage regulators 148 and the like, and decoding of the identification information becomes more difficult.

As described above, according to the present embodiment, it is possible to provide identification information that is extremely difficult to decode by combining the detection electrode 150 and the identification information voltage, and to realize the function for that at low cost. Also, this identification information is
The information on the position of the detection electrode 150 stuck at 0 and the identification information voltage value that should appear there and the result of reading the voltage at that position with a tester or the like can be checked, and the authenticity of the substrate 100 can be easily verified. Can be confirmed. Furthermore, a dedicated probe for measuring the identification information voltage at the position of the detection electrode 150 on the substrate 100, an identification information management computer to which these are connected, and the like are combined,
By using the tester, the identification information can be easily detected and the authenticity of the substrate can be confirmed.

2. Embodiment provided with modified sensor (1) Cable disconnection obstruction FIG. 6 shows a structure of a substrate according to an embodiment of the present invention.
The substrate 200 shown in this figure is a pachinko board terminal plate 18.
In this case, an effective countermeasure has been taken for a modification of the board that involves modification around the connector.

As described above, the board terminal plate 18 of the pachinko machine 10 is connected to the control board 1 on the same pachinko machine 10.
4 and the management computer 20. For the connection, a cable composed of a predetermined number of signal lines is used, and a connector for connecting the cable is provided on the board terminal plate 18. The signal flow is essentially a flow from the control board 14 to the management computer 20 via the board terminal board 18. The inventor paid attention to an incorrect circuit that changed the direction of signal flow by removing, replacing, or adding wires and components on the board terminal board 18 during various modifications. Are connected / attached to allow a false signal to flow, or are replaced with counterfeit or imitation panel terminal plates 18 and the like, and there are not a few things that involve connector attaching / detaching operations. The technical means adopted in the present embodiment is to provide a member near the connector that hinders the attachment / detachment of the cable or the removal of the connector, so that their traces remain in a state that can be easily visually recognized,
Such technical means.

As shown in FIG. 6C, a connector 2 for connection to the control board 14 or the management computer 20 is provided.
02 is usually arranged at the edge of the substrate 200 to be remodeled. Reference numeral 204 in the figure denotes a cable end of a cable for connection to the control board 14 or the management computer 20.
Nasu. Further, in this embodiment, FIGS. 6A and 6B
The connector cover 206 is provided as shown in FIG. The connector cover 206 cooperates with the substrate 200 to
02 (and a part of the cable end 204 in the cable connection state). Also, at least one of the edges of the connector cover 206 is the same as that shown in FIG.
The shape is T-shaped as shown in FIG. This T-shaped part 206
a is a conductor layer 208 formed on the surface of the substrate 200;
Among them, it is fixed to a portion 210 indicated by a broken line in FIG. In this part 210,
As shown in FIG. 6 (C), it is desirable to form a pattern conductor 212 that forms an energizing path for inspection. Further, detection electrodes (test points) TP1 and TP1 for inspection are used so that they do not mechanically conflict with or interfere with the connector cover 206 or the like.
P2 is formed on the surface of the substrate 200 in advance. Further, the connector cover 206 is formed of a material that is difficult to bend and is easily broken, for example, plastic having low viscosity. Connector 20
The connector cover 206 is desirably colorless and transparent in order to visually recognize the connection state of the cable end 204 and the cable end 204 and remarkable processing.

When the board 200 according to the present embodiment is mounted on the pachinko machine 10 or the like as the board terminal board 18 or the like, a cable connection operation is performed before or after that. That is, the operation of connecting the cable end 204 to the connector 202 through the opening 206b provided in the connector cover 206 is performed. Once this operation is performed, the opening 206b
Cable end 204 to connector 2
02 cannot be easily removed. That is, since the connector cover 206 is in the way and it is difficult to attach and detach the cable, the remodeler becomes a physical obstacle to the remodeling and is a psychological pressure. The connector cover 206 is connected to the connector 20 mounted on the substrate 200 side.
It also hinders the work of removing 2.

Of course, the cable end 204 can be forcibly pulled out or the connector 202 can be removed. However, in this case, the bending of each part of the connector cover 206 is broken in most cases. Of the pattern conductor 212, and breakage that is difficult to repair occurs. Therefore, the inspector needs the connector cover 2
06 or its surroundings, and by checking and measuring the continuity or the circuit constant value between the test points TP1 and TP2, removing the cable or connector after starting the cable installation and use. Can be grasped easily and accurately.

Here, one end of the connector cover 206 is the T-shaped portion 206a, but the shape is not limited to the T-shape because this portion only needs to function as a kind of wedge.

(2) Magnetic or Optical Detection and Holding FIG. 7 shows the structure of a substrate according to an embodiment of the present invention in comparison with a conventional structure. The substrate 200 according to the present embodiment shown in FIG. 7B is different from the conventional substrate 200 shown in FIG. 7A in that a sensor 214 for detecting a signal direction is provided. In the figure, reference numeral 216 denotes a connector for inputting a signal from the control board 14 or the like, and 218 denotes a connector for outputting a signal to the management computer 20 or the like. 220 is connector 2
16 is a conductor wiring for transmitting a signal from the connector 16 to the connector 218, and is drawn here in a very simplified form for simplicity of description (that is, actually, detailed in other embodiments). Various components are appropriately mounted to form various circuit patterns).

The sensor 214 according to the present embodiment is characterized by
As shown in FIG. 7B, it is preferable to provide each of the plurality of wirings 220. As described above, for example, the signal flow in the board terminal board 18 of the pachinko machine 10 is originally a flow from the control board 14 side to the management computer 20 side, and the flow in the opposite direction is the same. It must not be. The sensor 214 has a function of detecting a signal flow in the wiring 220 and “storing” or “holding” the result. The inspector refers to the information stored or held by the sensor 214 during the inspection, and detects the fact of the alteration accompanied by alteration of the signal flow. As described above, according to the present embodiment, since the trace of the remodeling accompanied by the alteration of the signal flow is held by the sensor 214,
Various effects can be obtained, including a reduction in inspection labor.

The sensor 214 can be realized by using a magnet and an irreversible movement mechanism as shown in FIGS. 8 and 9, or by using a directional element such as a photocoupler as shown in FIG. It is also possible to realize it.

First, in the example shown in FIGS. 8 and 9, the winding 222 is inserted in the middle of the wiring 220. Since this winding 222 is used as an electromagnet, it is desirable to wind it around a magnetic yoke (for example, iron core) 224. However, the structure may be such that the wiring 220 is passed through magnetic beads, or depending on the performance and position of the rotating magnet 226, no magnetic body may be used. The rotating magnet 226 includes an electromagnet formed by the winding 222 and first to third return portions 228, 230, and 232.
And a member forming the sensor 214,
It is arranged to rotate in response to the reversal of the direction of the signal flowing through 20.

The first to third return portions 228, 230 and 23
Reference numeral 2 denotes a member that constitutes an irreversible motion mechanism, for example, a section that is attached obliquely to the rotation radius of the rotating magnet 226, and on the rotation circumference of the rotating magnet 226 to regulate the position of the rotating magnet 226 in the rotating direction. Is provided. In the figure, first to first
Arrows are drawn on the third return portions 228, 230, and 232. This arrow indicates the direction of rotation allowed by the return portion to which the arrow is attached, and the rotating magnet 226 cannot rotate in the direction opposite to this direction of rotation.
That is, the first to third return portions 228, 230, and 232
This is a kind of mechanical check valve having a function of permitting rotation in the direction of the arrow while inhibiting rotation in the opposite direction.

When the direction of the signal flowing through the wiring 220 is the direction indicated by 234 in FIG.
Is wound clockwise, the pole near the rotating magnet 226 of the electromagnet constituted by the winding 222 and its iron core 224 becomes the S pole. Therefore, the rotating magnet 226 tries to rotate in the counterclockwise direction indicated by 236 in FIG. The initial position of the N pole of the rotating magnet 226 is the first return portion 228 and the second position.
If it is between the return unit 230 and the first return unit 22
8 is clockwise, the N of the rotating magnet 226 is
The pole stops short (right side) of the first return portion 228. Since a relatively wide angle range is provided between the first return portion 228 and the second return portion 230, it can be said that the clockwise movement of the rotating magnet 226 is not so much restricted in this state.

It is assumed that, from this state, the direction of the signal flowing through the wiring 220 is reversed to the direction indicated by 238 in FIG. At this time, the pole near the rotating magnet 226 of the electromagnet becomes the N pole. Therefore, the rotating magnet 226 tries to rotate in the clockwise direction indicated by 240 in FIG. Since the arrow of the second return portion 230 is clockwise, after exceeding the second return portion 230, the N pole of the rotating magnet 226 becomes the second return portion 230.
You cannot return to the front (left side). 2nd return part 2
Since the angle range between the third return portion 232 and the third return portion 232 is relatively narrow and the arrow of the third return portion 232 is counterclockwise opposite to that of the second return portion 230, the second return portion 2
After exceeding 30, the N pole of the rotating magnet 226 is almost fixed in position. This position is maintained by the operation of the second return portion 230 even if the direction of the signal flowing through the wiring 220 is reversed again in the direction 234.

In this embodiment, when a signal flows from the input connector 216 to the output connector 218, that is, in the forward direction, the state shown in FIG. 8 is obtained, and the signal flows in the opposite direction, that is, in the reverse direction. When the sensor 214 according to the principle shown in FIG. 8 and FIG. The inspector determines that the north pole of the rotating magnet 226 in the sensor 214 is the second and third pole.
When the signal is captured by the return units 230 and 232, it can be determined that a signal in the opposite direction has flown through the wiring 220 related to the sensor 214. That is, since the fact of the reverse energization is fixedly displayed by the rotating magnet 226, it is easy to detect that the signal flow flowing through the wiring 220 may have been tampered with illegally. If the N pole and the S pole of the rotating magnet 226 are colored, the visual recognition becomes easier.

Next, in the example shown in FIG.
4 has a configuration in which a photocoupler 246 is provided between the signal input terminal 242 and the signal output terminal 244. When the sensor 214 is provided on the wiring 220, the circuit pattern and component arrangement are determined so that the signal input terminal 242 is connected to the input connector 216 and the signal output terminal 244 is connected to the output connector 218. deep. Wiring 2
If the signal flow at 20 is forward, the sensor 21
4, an input signal flows along a direction 248 in the figure, and an output signal flows along the direction 250 on the output side of the photocoupler 246 in response to the input signal. Therefore, signal transmission in the wiring 220 is not hindered by the sensor 214.
On the other hand, if the flow of the signal in the wiring 220 is in the opposite direction, the signal is blocked by the photocoupler 246, and the signal transmission in the wiring 220 is prevented by the sensor 214. Therefore, the photocoupler 246 provides a function of obstructing the reverse signal transmission itself. The current signal transmission direction can be confirmed by visually checking whether or not light is emitted from the light emitting element portion of the photocoupler 246.

(3) Counting / Evaluation / Output of Number of Signals FIGS. 11 to 13 show the configuration of a substrate and an inspection machine thereof according to an embodiment of the present invention. Substrate 20 according to the present embodiment
0 indicates a counter 252, a calculator 254, and a display 2
It is characterized in that circuit components and members relating to counting, evaluation and output of the number of signals, such as 56 and an evaluator 258, are provided, or a function equivalent thereto is provided in the inspection machine 260. FIGS. 11, 12 and 13 show various modifications of the present embodiment, respectively.

First, in the example shown in FIG.
The counter 252 is connected in parallel to the wiring 220 according to. The signal 1 is a signal indicating a winning, for example, and the number of occurrences of the signal, that is, the number of signals is counted from a predetermined time in the counter 252 related to the signal 1, so that the number of winnings from the predetermined time can be known. This counter 2
The arithmetic unit 254 connected to the counter 52
The number of prize balls from the above-mentioned predetermined time is obtained by an operation such as multiplying the information held by 2, that is, the number of prizes by the number of prize balls per one prize. The display 256 connected to the calculator 254 displays the counted and calculated number of winnings, the number of winning balls, and the like in the form of numerical values, graphs, and the like. The inspector
By listing this display, information on the number of winnings and the number of winning balls can be obtained. Therefore, by comparing the information with the information stored in the management computer 20,
An unauthorized operation such as an unauthorized data operation in the management computer 20 or a modification of a signal after the connection portion of the counter 252 can be easily found.

[0111] The signal 2 is a signal representing, for example, the number of prize balls. The counter 252 connected in parallel to the wiring 220 relating to the signal 2 counts the number of award balls from the predetermined time point,
A display 256 connected to the counter 252 displays the information such as the number of award balls in the form of a numerical value, a graph, or the like.
The inspector can obtain information on the number of prize balls by listing this display, and can display the information obtained from the display 256 relating to the signal 1 and the management computer 2.
Compared to the information stored in the counter 252, the number of payout prize balls before the counter 252 connection site as well as the fraud such as unauthorized data manipulation in the management computer 20 and alteration of signals after the counter 252 connection site. Signal alteration such as illegal operation of the device can be easily found.

As described above, in the present embodiment, not only the simple relay of the signal from the control board 14 to the management computer 20 but also the determination of the statistical normality / abnormality of the signal in the relay transmission is performed. Are derived and provided by simple means. Thus, in the present embodiment, the R mounted on the control board 14 is
Modification by means such as replacing / rewriting the OM, designing a cable for connection to the control board 14 or the management computer 20, and processing data on the management computer 20 can be prevented. As a result, while performing the thinning out of the number of prize balls to be paid out during the jackpot, the management computer 20 and the like are notified of the wrong number of prize balls different from the actual number of prize balls to be paid out from the pachinko machine 10, and the like, It can be found more reliably and at lower cost than before. This check can be performed before opening the store, after closing the store, and the like. In the above description, the number of winnings and the number of prize balls are illustrated, but the method according to the present embodiment can be similarly applied to the number of jackpots and the number of pattern rotations. That is, according to the present embodiment, fraud such as intentionally increasing the jackpot probability or decreasing the continuous appearance rate of the probability variation pattern can be found more reliably and at lower cost than before. Further, according to the present embodiment, since this kind of fraud can be found and pointed out based on a statistical index that is widely recognized as objectivity, the reliability in detection of alteration is higher than before. Note that a memory, an external recording medium, or a communication line connection unit may be provided instead of or together with the display 256.

Next, in the example shown in FIG. 12, a counter 252 is provided for each of the four wirings 220, and the counting results by these are collectively input to the evaluator 258.
The result of the evaluation by the evaluator 258 is displayed on the display 256. The signal 1 is, for example, a signal representing winning, the signal 2 is, for example, a signal representing the number of winning balls, the signal 3 is, for example, a signal representing a jackpot, the signal 4 is, for example, a signal representing picture rotation, and each of the counters 252 is from a predetermined point in time. , The number of winning prizes, the number of winning balls, the number of jackpots, and the number of pattern rotations are counted. Evaluator 2
Numeral 58 detects an abnormality in the number of payout balls and the jackpot probability (the probability variation probability and the like can also be calculated) from the counting result held by each counter 252. When an abnormality is detected, the display 256 displays error information indicating the abnormality and the content of the abnormality in the form of characters, LED lighting, or the like. Therefore, in the example shown in FIG. 11, the same effect as in the example shown in FIG. 11 can be obtained.

Further, when the board 200 is actually used, a cable for connection to the control board 14 is connected to the input connector 216, and a cable for connection to the management computer 20 is connected to the output connector 218. It is connected. In the example shown in FIG. 13, these cables are disconnected at the time of inspection, and an inspection machine 260 is connected. That is, the output connector 262 of the inspection machine 260 is connected to the cable 2
64, and the input connector 266 is connected to the output connector 218 of the board 200 via the cable 268. Inspection machine 2
A pulse generator 270 and an evaluator 272 are provided in 60. A pulse generated by the pulse generator 270 is supplied to a wiring 220 (not shown) on the substrate 200 via a cable 264, and Cable 2
The signal sent to 68 is supplied to an evaluator 272. The pulse generator 270 is a circuit that generates an inspection (pulse) signal simulating a signal from the control board 14.

When the board 200 is operating normally without any unauthorized modification or the like, the signal appearing at the output connector 218 in response to this inspection signal has the original (pulse) waveform. It should have been retained for the most part. Then, the evaluator 272 compares the inspection signal generated by the pulse generator 270, that is, the output from the connector 262, with the response from the board 200 to this signal, that is, the input to the connector 266, and determines whether there is a signal. , And the waveforms are evaluated for coincidence and non-coincidence. The result is stored and stored in the inspection machine 260 or output to various displays and recording media. Thereby, the fact of the modification of the substrate 200 can be easily found.

The substrate 200 shown in FIG.
Alternatively, the configuration shown in FIG. 12 is also possible. In this case, when the inspection is performed using the inspection machine 260, the remodeling is performed by comparing and displaying the display of the display unit 256 on the substrate 200 and the evaluation result of the evaluator 272 in the inspection machine 260. The situation can be grasped more accurately. For example, when the display by the display unit 256 indicates “normal” and the evaluation by the evaluator 272 indicates “abnormal”, there is a high probability that the remodeled portion is downstream of the counter 252 and upstream of the output connector 218. . Also, the control board 14
And display by the display device 256 in a state of being connected to the management computer 20 and the management computer 20
"Abnormal" is detected by comparison with the information stored in the display device 256 and the display / evaluation of the display unit 256 and the evaluator 272 in the state where the inspection unit 260 is connected, the "normal"
Indicates that there is a high probability that a modification has been made on the path connecting the board 200 and the management computer 20. Thus, the configuration shown in FIG. 11 or FIG.
By combining with the configuration shown in FIG. 13, it is possible to easily perform a more accurate modification detection than in the related art.

3. Embodiment in which identification information and modification detection result are wirelessly transmitted (1) Broadcast of modification detection result FIG. 14 shows the structure of a substrate 300 according to an embodiment of the present invention. FIG. 15 shows functions of the inspection machine 302 in this embodiment. One of the features of this embodiment is that the radio wave projected from the inspection machine 302
The information is modulated by the identification information and the monitoring result information by the signal 04, and the inspection machine 302 receives the information and can know the state of the substrate 300.

Regarding the board terminal plate 18 or a similar board, that is, a board whose remodeling is to be prevented as much as possible, it is not only detected that the remodeling has been performed, but also what kind of remodeling has been performed on the board. It is also important to know if this is the case, and it is also important to prevent the modification to the substrate itself. In the present embodiment, not only the identification information is attached to the substrate 300, but also what kind of remodeling has been performed can be notified to the inspector in real time by simple and efficient means. The remodeling itself is hindered by the exterior structure.

As shown in FIG. 14, a switching circuit 306 and an ID number setting circuit 308 are mounted on a substrate 300 together with a transponder 304. ID number setting circuit 3
08 is a circuit for generating an ID number which is one form of identification information. The switching circuit 306 is a circuit that combines the ID number from the ID number setting circuit 308 and various types of monitoring result information to generate a series of modulation signals. Transponder 3
Reference numeral 04 denotes a member that changes the spatial impedance according to the modulation signal supplied from the switching circuit 306, and is driven only by the modulation signal. This transponder 3
04 can be realized by some kind of semiconductor. Therefore, in this embodiment, when an unmodulated radio signal having a predetermined frequency, for example, arrives from outside, the radio signal is
Responder 3 according to the modulated signal including the D number and the monitoring result information
04 will be modulated. In other words, the unmodulated radio signal projected from the outside is re-emitted after being modulated by the ID number and the monitoring result information.

In the circuit shown in FIG. 14, three types of monitoring result information are supplied to the switching circuit 306. One of them is supplied from the connector disconnection detection circuit 312, the other is supplied from the cable alteration detection circuit 314, and the other is supplied from the transmission direction detection circuit 316.

The connector drop detection circuit 312 is a sensor for detecting that a cable (for example, a flat cable) 318 for connection to the management computer 20 has been disconnected from the output connector 320 mounted on the substrate 300. 322. The sensor 322 is, for example, a photo interrupter. This photo interrupter is
When the plug 324 at the end of the cable 318 is connected to the output-side connector 320, light from the light-emitting portion is blocked and does not reach the light-receiving portion. It is incorporated in the output side connector 320. The connector disconnection detection circuit 312 further includes a flip-flop 32 that changes its output when the plug 324 is removed from the connector 320.
6. If the operation logic of the sensor 322 is a logic that the plug 324 is short-circuited to the ground when the plug 324 is inserted into the connector 320 and is open when the plug 324 is not inserted, the flip-flop 326 causes the sensor 322 to be opened. And "1".
In the illustrated example, the power supply voltage (+ Vdd) is applied to the power supply terminal of the flip-flop 326 from the backup battery 310 mounted on the substrate 300, and the power supply terminal is connected to the input terminal via the resistor R1. When the sensor 322 is in a short-circuit state, the input to the flip-flop 326 is at the ground potential, and when the sensor 322 is in an open state, it is almost at the power supply voltage (+ Vdd).

Therefore, the connector detachment detection circuit 312 can detect that the plug 324 has been removed from the connector 320. Also, cables 318 and 3
The power supply voltage of the substrate 300 (+ Vd
Since the flip-flop 326 is backed up by the battery 310 which is a power supply of a different system from that of d), even when the power supply voltage (+ Vdd) supplied from the outside is cut off, the flip-flop in the connector disconnection detection circuit 312 is cut off. The plug removal fact in the past can be stored in the plug 326. Since the output of the flip-flop 326 is supplied to the switching circuit 306 and used as a part of the modulation signal, when a radio signal is projected using the inspection device 302, the ID number or the like indicating that the plug 324 has been removed from the connector 320 is output. Together with the inspection machine 302. For example, when the board 300 is mounted on the pachinko machine 10 or the like, the contents of the flip-flop 326 are reset, and use is started. , Information that the plug 324 has been disconnected from the connector 320 is held by the flip-flop 326, and when the inspector performs a check with the inspector 302, the information is transmitted to the inspector 302 together with the ID number and the like. Sent.

The switch is not limited to the photointerrupter, and any switch whose state changes in response to the removal of the plug 324 can be used as the sensor 322. Although the output side connector 320 is described here as an example for the sake of simplicity, the plug 330 provided on the cable (for example, a flat cable) 328 for connection to the control board 14 is connected to the board 300. A circuit similar to the connector disconnection detection circuit 312 may be provided to detect removal from the upper input side connector 332.
In addition, as shown in FIG. 21 later, a short-circuit wire 366 is embedded in the cable 318, and when the plug 324 is dropped, the short-circuit wire 366 is disconnected from the connector 320, and the input to the flip-flop 326 changes. The dropout detection circuit 312 can also be implemented.

Next, the cable alteration detection circuit 314 has a wiring 334 connected to the backup power supply voltage (+ Vcc) from the battery 310 and a wiring 336 connected to the ground as wiring formed on the substrate 300. are doing.
These wirings 334 and 336 are arranged on the substrate 300 with a sufficient interval so that electrical insulation is maintained. Further, a fuse 338 that is cut off when + Vcc is grounded is provided on the wiring 334. Further, one end of the fuse 338 on the connector 320 side and the wiring 3
36, a resistor R2 having a sufficiently high value is provided. The connection end of the resistor R2 and the fuse 338 is connected to the flip-flop 340, and the potential at this point is L
When the level goes down, the flip-flop 340 outputs an H level. The wires 334 and 336 are extended into the cable 318 via the connection between the connector 320 and the plug 324. In the cable 318, the wires 334 and 336 are covered and arranged so that electrical insulation is maintained and adjacent to each other. The conductor arrangement on the management computer 20 side, including the connection with the connector 339, is designed so that electrical insulation is maintained between the wiring 334 and the wiring 336.

Therefore, in a state where no modification or the like is performed, electrical insulation is maintained between the wiring 334 and the wiring 336. Since the resistor R2 has a high resistance, the potential appearing at the input terminal of the flip-flop 340 driven by + Vcc has a level substantially equal to + Vcc, that is, an H level. However, when the cutting edge of the tool is inserted into the cable 318 for modification or the like, the wirings 334 and 33 are often used.
6 conducts electrically through the cutting edge of the tool, which is usually metal. Then, the fuse 338 is cut off due to the flow of the ground fault current, and the input to the flip-flop 340 falls to substantially the ground potential, that is, the L level. This level change is stored by the flip-flop 340 backed up by + Vcc, and the switching circuit 306
Supplied to Thus, the cable alteration detection circuit 31
According to 4, the inspection machine responds to the inquiry in the same manner as the unplugging monitoring result, indicating that there is a high possibility that the cutting edge of the tool has fallen into the cable 318, and thus there is a high possibility that there is a remodeler who tried to cut the cable 318. The notification can be sent to the 302 side.

The transmission direction detection circuit 316 is used together with an interface circuit 342 that regulates the signal transmission direction. The interface circuit 342 is a circuit that regulates the signal flow so that the signal flows from the control board 14 side to the management computer 20 side.
A photocoupler 344 or the like connected to the second side and a light receiving unit connected to the connector 320 can be provided. Transmission direction detection circuit 3
Reference numeral 16 has a time counter 346 for counting a period in which no current flows in the light receiving portion of the photocoupler 344. The count value of the time counter 346, that is, the photocoupler 3
When the measured value during a period in which no current flows in the light receiving section 44 reaches a predetermined time, the flip-flop 348 latches + Vdd, and its output becomes H level, that is, almost + Vdd level.

Here, when there is no signal, the photocoupler 34
It is assumed that the signal logic is set so that a current flows through the light emitting unit 4 and does not flow during signal transmission. In addition, it is assumed that the predetermined time is set to be longer than the maximum value of the no-signal continuation time at the time of non-modification, and preferably shorter than the minimum value of the no-signal continuation time that may be caused by the modification. . At this time, if the signal flow has not been modified, the output of the flip-flop 348 remains at the L level, and the signal flow is modified. At that point, the output of flip-flop 348 changes to H level. + Vc
flip-flop 34 backed up by c
The output of 8 is supplied to the switching circuit 306 and used as a part of the modulation signal. Therefore, it is possible to notify the person in charge of the inspection that the possibility that the modification including the modification of the signal flow has been performed is high as in the case of removing the plug or cutting the cable. Note that the logic circuit 350 is a circuit for supplying a clock for counting to the time counter 346 and supplying a power reset signal.

As shown in FIG. 15, the inspection device 302 transmits a radio signal related to an inquiry to the substrate 300 and receives a response from the transponder 304 in response thereto.
52. The inspection machine 302 is further generated by a waveform shaping circuit 354 for shaping the received waveform related to the response, a connector drop detection circuit 312, a cable alteration detection circuit 314, a transmission direction detection circuit 316, and an ID number setting circuit 308, respectively. Display 35 for displaying information
6, 358, 360 and 362. The inspector may use these indicators 356, 358, 360 and 36
2 to determine whether the board 300 has been replaced, what the ID number of the board 300 is,
It is possible to obtain information such as whether the connector 0, the related cable, and the signal direction have been tampered with.
The labor required for this is small, and there is no need to contact a probe or the like of a tester. Since the ID number and various types of monitoring result information are transmitted and received simultaneously and using the same member, the manufacturing cost of the substrate 300 is unlikely to be improved.

Further, in the present embodiment, the transponder 30
As shown by the shaded solid lines in FIG. 14 so as not to hinder the response by the C.4 or the cable connection using the connectors 320 and 332, but to make the modification physically difficult.
A cover 364 that selectively covers the substrate 300 is provided. It is desirable to cover parts and conductors that can be modified with the cover 364 as much as possible. Cover 36
4 can be realized, for example, in the form of a resin mold or the like, paint application, a metal plate housing, a clear resin case, or the like. As shown later in FIGS. 19 and 20, resin potting for each component may be used. If the transmission of the response is not hindered, the transponder 304 may be covered with the cover 364. With this configuration, according to the present embodiment, the remodeling can be physically hindered, and even if the remodeling is performed, a trace of the remodeling remains on the cover 364. This is effective in preventing and finding alterations. As a modification, a circuit shown in FIG. 21 can be given. In the above-described embodiment, the battery 310 is used to store the monitoring result on each flip-flop. ) A large-capacity capacitor that can be backed up for a period of time, for example, a supercapacitor (trade name) can also be used. Note that the same applies to the above-described embodiment. However, when the backup is completed, the storage contents are reset to contents indicating that no modification is performed, such as “no removal”. Preferably, a preventive measure such as a tie wrap is taken to prevent accidental disconnection of the cable.

(2) Identification Information Conversion FIGS. 16 to 18 show a question / response procedure between the inspection machine 367 and the board 300 executed in one embodiment of the present invention. 19 to 22 show the configuration of the substrate 300 according to the present embodiment.

In the present embodiment, preferably, the pattern conductor formed on the component mounting surface (first layer) is only a conductor for mounting the component, and a through hole is provided immediately below or in the vicinity of the conductor to use the second layer ( Inner layer A surface) or third layer (inner layer B)
Surface). The circuit pattern is mainly configured using the second layer and the third layer. The first to third layers are
It is desirable to use a solid ground except for a portion where the pattern conductor is formed and a slight gap for insulation. Also,
It is desirable that the fourth layer drawn as the lowermost layer in FIG. 19 be entirely grounded. The use of such a conductor arrangement makes it difficult to read the circuit pattern. In FIGS. 19 and 20, a cover 364 for making remodeling difficult and for holding traces of remodeling is realized by a component that can be a target for remodeling, a resin potted on a conductor, or the like. More specifically, after mounting the surface mount components, resin coating is performed. To make parts hard to see, the color of the resin should be as dark as possible, such as black.
It is desirable to use a resin having low transparency. Conversely, to make it easier to discover the fact of modification, it is better that the resin is a transparent or translucent resin that is as light in color as possible. Although the substrate 300 is a four-layer substrate in the illustrated example, the procedure according to the present embodiment can be performed on a substrate having a smaller or larger number of conductor layers.

In this embodiment, monitoring result information can be obtained as in the above-described embodiment. As a circuit for displaying the monitoring result information, a circuit included in the embodiment described above can be used. Monitoring result information
For example, it is transmitted after being added to an a-bit code, which will be described later, but description of the monitoring result information is omitted in the following description.

In this embodiment, a substrate 300 having the structure shown in FIG. 19 and FIG.
67 has a feature in a procedure for mutually authenticating with the G.67. The remarkable effect obtained by the present embodiment is that the responder 369 can be removed from the substrate 300 and attached to a forged / forged substrate to cover the remodeling (especially replacement), which can be an effective measure against remodeling. is there. That is, in the present embodiment, since the response from the substrate 300 is not fixed and changes appropriately as described later, it is possible to accurately confirm whether or not the substrate 300 is a genuine product and has not been modified. . Further, the regularity of the question / response code is hard to be noticed by the remodeler. In this embodiment, the inspection machine 3
An inquiry (question) is issued from the 67 side to the substrate 300 by infrared rays, and a response to the inquiry is transmitted from the transponder 369 on the substrate 300 to infrared rays (for example, light emission output from an LED).
The transmission is performed by the following. The transponder 369 according to the present embodiment includes, for example, a head part including an infrared sensing element and an infrared light emitting element, and circuits and components for driving the head part. The head part is placed outside the potting area so that infrared light can be sent and received (or potted with transparent resin).
Parts should be included in the potting target. In addition, the detector of the inspection machine 367 is also configured to transmit and receive infrared rays.

Next, a procedure relating to a question / response between the inspection machine 367 and the substrate 300 will be described. Note that x, K, M,
N is a natural number, a and b are natural numbers of 2 or more, and i and j are natural numbers of a or less. Also, hardware for executing (re) question, (re) answer, collation, code conversion, and the like, and members for holding and storing information necessary for the purpose are not shown in the drawings for simplification. However, those skilled in the art referring to the disclosure of the present application will be able to sufficiently design them according to common sense in the art.

As shown in FIG. 16, this procedure is started by a wireless inquiry from an inspection machine 367 using a detector (368). Transponder 3 mounted on substrate 300
69 returns some response whether this question is a question from the authentic tester 367 or not (370, 37).
2). For example, if the code length of the question from the tester 367 is previously determined to be a bits, but the code length x of the actually received question is not a bits, the question It could be a fake originating from a device other than 367, for example, a decryption device prepared by a modder. Therefore, to disturb the remodeler, a bit string having the same code length as the code length x of the received question is transmitted as a dummy response (370). On the other hand, when the code length x of the actually received question is a bit, there is room for recognizing that the question is transmitted from the genuine inspection machine 367. Therefore, in this case, the board 300 generates a response by performing code conversion (CodeM conversion in FIG. 16) specified by the received question, and generates the response, and transmits the generated response to the transponder 302.
(372).

When the response transmitted from the substrate 300 side is received by the detector, the inspection device 367 collates the content of the previously transmitted question with the received response (37).
4). When the collation detects a situation where the code length is different, code conversion is not performed as specified, or the like, the inspection machine 367 may have modified the substrate 300. A notice is displayed to alert the person in charge of inspection (376). On the other hand, when such a situation is not detected, that is, when there is room to recognize that the substrate 300 has not been modified, the inspection machine 367
Generates a re-question for the response by applying code conversion (CodeN conversion in FIG. 16) specified by the response received from the substrate 300 to the board 300 to give a certain level of authentication. Then, the generated re-query is transmitted to the substrate 300 using the detector 352 (378).

The board 300 receives the re-question,
The content of the response transmitted earlier is compared with the received re-question (380). When the collation detects a situation where the code length is different, the code conversion is not performed as specified, or the like, the board 300 is attached to the authentic inspection device 3.
It is determined that it is not a re-question from 67, and the execution of the subsequent procedure is stopped (382). On the other hand, when such a situation is not detected, that is, when it is recognized as a re-question from the genuine inspection machine 302 and to give authentication to the substrate 300, the board 300 is In order to give a temporary authentication to the re-question, a code conversion (CodeK conversion in FIG. 16) designated by the re-question received from the inspection machine 367 is applied to the re-question to generate a re-response to the re-question. Then, the generated re-response is transmitted to the inspection machine 367 using the responder 369 (3.
84).

On the inspection machine 367 side, the re-question is received using the detector, and it is compared with the content of the re-question (386). Due to this collation, there is a difference in code length,
When a situation such that code conversion is not performed as specified is detected, the inspection machine 367 displays a message indicating that the substrate 300 may be modified, etc. (388). On the other hand, when such a situation is not detected, that is, when it is recognized that the substrate 300 has not been modified, the inspection machine 367 is used.
Displays that effect and the like (390).

The specification of the code conversion content is, for example, as follows:
This is performed by a specific bit or a combination of the a-bit (re) question / response. Further, the substrate 300 and the inspection machine 3
At 67, the conversion code and the code conversion content are stored in association with each other, and this storage is referred to by the conversion code specified by the (re) question or response to decode the code conversion content to be executed. ·Identify. It is assumed that the stored content on the substrate 300 is the same as that on the inspection machine 367. Also, as an executable code conversion, for example,
Prepare designated bit inversion, designated scramble, etc. Figure 1
7 and the example of a = 20 bits shown in FIG.
The start bit and the stop (S) indicate the start and end of the code, respectively.
Since the top 18 bits are used, for example, the i-th bit and the j-th bit among the remaining 18 bits are used as bits for specifying the code conversion content.

For example, when the board 300 receives the a-bit code and the combination of the i-th bit and the j-th bit is “01”, the code conversion by the conversion code Code 1 is designated by the inspection machine 367. And performs a conversion process using the conversion code Code1 on the 18 bits excluding the start bit and the stop bit,
By adding a start bit and a stop bit to the resulting code, a response to the tester 367 is generated. Upon receiving this response, the tester 367 determines that the combination of the i-th bit and the j-th bit “11”
It is determined that conversion by the conversion code Code3 is designated by the substrate 300, and the conversion code Cod is converted into 18 bits excluding the start bit and the stop bit.
The conversion process according to e3 is executed, and a start bit and a stop bit are added to the resulting code, thereby generating a re-question for the board 300. Substrate 30
Since the combination of the i-th bit and the j-th bit of the received re-query is “00”, it is assumed that code conversion by the conversion code Code0 is specified by the checker 367, and the start bit and the stop bit are set to 0. Excluding 1
By executing conversion processing using the conversion code Code0 on the 8 bits and adding a start bit and a stop bit to the resulting code, a re-response to the inspection device 367 is generated. It is desirable that the contents of the code conversion be relatively simple, for example, as shown in FIG. 18, that is, the contents can be executed without installing complicated processing circuits and processing software. The example shown in FIG. 18 is an example in which the conversion for partially inverting the bits and rearranging all the bits is associated with the conversion code Code0.

As described above, in this embodiment, since the inspection is performed in a non-contact manner, the labor of the inspector is reduced. Also, because we are performing a procedure that involves transcoding,
The content of the response from the board 300 changes depending on what kind of code is used for the question. Therefore, remodeling by a remodeler who does not strictly understand the code conversion rules (the position of the bit designating the conversion content, the correspondence between the conversion code and the code conversion content, etc.) can be detected almost certainly.

This will be described more specifically based on the above example. First, for example, FIG.
In step 368, a query is generated using the pseudo-noise code generator of PN15. In this code generator, 2 ¹⁵ −1 = 32 for any initial value
A 767-bit cyclic bit string can be generated. There are 32767 kinds of consecutive 18-bit codes that can be cut out from the cyclic bit string. When asking a question, one of the 32767 types is randomly selected,
A start bit and a stop bit are added, and the resulting bit string of 20 bits is transmitted as a query. In the case of the genuine substrate 300, that is, a product that has not been modified, the designated code conversion content is correctly decoded by referring to the i-th bit and the j-th bit in this bit string, and a question is asked according to the result. It will send the correct response obtained by transcoding. However, if the substrate that receives the question from the inspection machine 367 is a modified product (including imitation products and counterfeit products), a correct response will not be obtained unless the modifying person determines the rules for code conversion. Of course, the probability of sending the correct response by chance is not zero, but it is negligibly small. That is, the value of false for "response" may take is ^{2 a-} 2 = 26
Since there are 2144 ways, and therefore the probability of coincidence in one transmission is as low as 1/262144, the response to the question, the re-question for the response, the re-answer to the re-question, and the mutual authentication for a total of three times In the example of a = 20, the probability of accidentally recognizing that the substrate 300 is a genuine product although it is not a genuine product is (1/32767) × (1 /
262144) ³ = 1.69 × 10 ^{−21, which} is a very small probability.

Further, even if the code conversion rule is identified by the remodeler up to the details, it can be dealt with by changing the code conversion rule from the next lot, so that the manufacturer can easily deal with it. is there. This is the traditional RF
This is an effect that cannot be obtained when the ID technology is simply applied to this technical field.

Further, the inspection machine 367 not only performs the authenticity judgment of the substrate 300 by the collation inspection, but also
Since the authenticity determination of the inspection machine 367 by the collation inspection is also performed on the side, not only can the modification of the substrate 300 be easily detected, but also the obstruction of the work of elucidating the question / response procedure by the decryption device prepared by the modification person. You can also. Also, since the code conversion content is specified at the time of question, response, and re-questioning, and the mutual authentication procedure is performed to check whether the specified code conversion has been performed, it is only necessary for the remodeler to understand the procedure. In addition, it is required to clarify the contents of the code conversion, and therefore, it is difficult to perform the modification so as not to be exposed. In principle, no response may be made when the code length is invalid, but since a dummy response with the same length as the fake “question” is returned,
In the present embodiment, a predetermined code length a
Can be prevented. Thus, in the present embodiment, the obstruction to the decryption work by the remodeler is
It also has effects such as disturbance.

4. Embodiment in which substrate structure and arrangement are modified (1) Subdivision of substrate to be remodeled FIG. 23 shows a structure of a substrate according to an embodiment of the present invention. The substrate 400 according to this embodiment can be used as the board terminal plate 18 or the like as in the above-described embodiments.
It has a characteristic appearance in that it is not constituted by one substrate and various members attached thereto. That is, in the present embodiment, a plurality of substrates 404 divided into a vertically long shape are placed in a case 402 formed of a transparent resin (including a translucent resin; the same applies hereinafter).
And the gap 406 in the case 402 is filled with a transparent resin or the like, and the opening of the case 402 is closed with a lid 408 also formed of a transparent resin or the like.
The construction method is adopted. The case 402 and its lid 408 may be formed of, for example, a transparent acrylic resin, and the filling resin may be, for example, a transparent silicon resin. In the figure, 4
Reference numeral 10 denotes a mounting hole for fixing the substrate 400 to the pachinko machine 10 or the like. When attached to the pachinko machine 10 or the like, the lid 408 faces outward, and the bottom surface of the case 402 faces the pachinko machine 10 side. .

[0146] As shown in the figure, the posture in which the vertically long board 404 is incorporated into the case 402 is such that the board width direction coincides with the case depth direction. The depth of the case 402 is set so that the length of the vertically long substrate 404 is equal to or slightly larger than the width of the vertically long substrate 404. Opposite edges of the case 402 are provided with slits 412 corresponding to the respective vertical substrates 404. Each vertical substrate 404 is inserted and fixed in the corresponding slit 412. Therefore, the width and depth of the slit 412 are set so that the position of the vertically long substrate 404 can be fixed without noticeable rattling, and that the filling resin does not leak significantly before curing. The interval between the slits 412 is determined by the connector 414 belonging to a certain vertically long substrate 404,
The predetermined pitch is set so that the 416, the component 418, and the like do not conflict, compete, or electrically couple with the connectors 414, 416, the component 418, etc. belonging to the other vertically long board 404.

Since the case 402, the resin filling the gap 406, and the lid 408 are transparent, by incorporating and fixing the vertically long substrate 404 in such a form / method, in this embodiment, through the lid 408 or the side of the case 402, Visual observation of the front and back sides of each vertically elongated substrate 40 through
It is possible. That is, in the conventional case, the pachinko machine 10
The surface (usually the solder surface) that was difficult to visually check because it faced the side, through the gaps between the vertically long boards 404, the deletion, addition, and replacement of components, and the modification of the circuit wiring pattern, etc. were visually observed. And so on.

In the present embodiment, the connector for connection with the control board 14 and the management computer 20 is further provided as a plurality of connectors 414 and 416.
Circuit components to be mounted on the substrate 400 are also mounted on the substrate 400 as a plurality of components 418. Therefore, the type and number of signals transmitted via each vertically long board 404 are smaller than those of the “single board” board in the related art and some embodiments of the present invention. Therefore, it is possible to identify which signal has been subjected to an illegal operation only by inspecting which vertical substrate 404 has been modified. That is, the work of following the flow of the signal wiring pattern on the substrate at the time of inspection is reduced. In this regard, a design in which one vertical substrate 404 is assigned to one signal is preferable. Further, by providing a photocoupler or the like that regulates the signal direction as (part of) the component 418, the function of preventing remodeling and holding traces of remodeling can be enhanced.

In the present embodiment, the caulking case conventionally used is unnecessary, and the sealing seal is not required. Therefore, the remodeler can no longer take any tricks such as clever opening of the caulking case, forgery or imitation of the sealing seal. The back of the case (the surface facing the pachinko machine 10 side)
In view of the fact that the remodeling from the point does not make sense, it can be said that the present embodiment provides a function of psychologically acting to give up the remodeling to the remodeler, in addition to a function such as remodeling obstruction.

If it is only necessary to enhance the function of retaining the trace of remodeling, the filling of the gap 406 with the transparent resin may be omitted, and the gap 406 may be filled with a transparent gas such as air. By doing so, it is possible to reduce material costs, reduce man-hours, relax dimensional accuracy of the slit 412, and the like. However, it is more effective that the gap 406 is at least partially filled with the resin in the sense that the modification is difficult. In addition, in order to discover that the resin has been replaced with a counterfeit or counterfeit product, there is room for discovery based on visual confirmation of the material of the resin and the like. Conversely, when filling with a non-transparent resin is performed, the possibility of discovering remodeling traces by visual inspection is diminished, but an effect not seen in the past is obtained in terms of increasing the difficulty of remodeling.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a relationship between a pachinko machine and a management computer and a schematic configuration of each pachinko machine.

FIG. 2 is an exploded perspective view showing a structure of an embodiment in which a substrate to be remodeled is preferably covered with a transparent or translucent flexible substrate having a current path for inspection.

FIG. 3 is a perspective view (a part of which is an enlarged view of a non-component mounting surface) showing a structure of an embodiment in which a remodeling target substrate is made transparent or translucent or a current supply path for inspection is formed in the remodeling target substrate.

FIG. 4 is a circuit diagram showing an embodiment in which a current-carrying path for inspection is concealed in a substrate to be remodeled and dummy through holes are provided as identification information, and in particular, a configuration of a circuit for providing the identification information.

FIG. 5 is a view showing the structure of the embodiment shown in the preceding figure, and in particular, FIG.
(B) is a plan view in which a part thereof is enlarged, and (C) is an AB cross-sectional view thereof.

FIG. 6 is a view showing a structure of an embodiment provided with a connector cover which hinders cable removal and connector removal and breaks or breaks a conduction path when the removal is forcibly performed, particularly (A). Is a cross-sectional view, (B) is a plan view in a state where a connector cover is removed, and (C) is a plan view showing a conduction path for inspection.

FIG. 7 is a diagram showing a structure of an embodiment including a member that stores, retains, and fixedly displays a fact that a backward signal has flowed, and in particular, FIG. 7A is a perspective view of a conventional technique shown for comparison;
(B) is a perspective view of the substrate according to the present embodiment.

FIG. 8 is a principle diagram showing an example in which the embodiment shown in the preceding figure is realized by using a rotating magnet and an irreversible movement mechanism, in particular, an operation at the time of a forward signal.

FIG. 9 is a principle diagram showing an example in which the embodiment shown in the preceding figure is realized by using a rotating magnet and an irreversible movement mechanism, in particular, an operation at the time of a reverse signal.

FIG. 10 is a circuit diagram showing an example in which the embodiment shown in the preceding figure is realized by using a signal direction restricting means such as a photocoupler.

FIG. 11 is a diagram illustrating an embodiment for statistically evaluating and displaying the number of signals flowing through a substrate to be remodeled and the like, particularly showing a circuit configuration thereof.

FIG. 12 is a view showing a modification of the circuit on the substrate to be remodeled in the embodiment shown in the preceding figure.

FIG. 13 is a diagram showing an example in which the embodiment shown in the preceding figure is implemented by improving an inspection machine.

FIG. 14 is a diagram showing a circuit configuration of a remodeling target board in an embodiment in which a means for wirelessly transmitting identification information and a remodeling monitoring result is provided on the remodeling target board.

FIG. 15 is a block diagram showing functions of the inspection machine in the embodiment shown in the preceding figure.

FIG. 16 is a flowchart showing a question / response procedure in an embodiment for executing a response procedure involving code conversion.

FIG. 17 is a conceptual diagram showing an example of a response in the embodiment shown in the preceding figure.

FIG. 18 is a conceptual diagram showing an example of code conversion in the embodiment shown in the preceding figure.

FIG. 19 is a partial cross-sectional view showing the structure of a substrate to be remodeled in the embodiment shown in the preceding figure.

FIG. 20 is a partial plan view showing the structure of the substrate to be remodeled in the embodiment shown in the preceding figure.

FIG. 21 is a circuit diagram showing a configuration of a plug missing detection circuit in the embodiment shown in the preceding figure.

FIG. 22 is a circuit diagram showing a configuration of an interface circuit in the embodiment shown in the preceding figure, in particular, a signal direction regulating method.

FIG. 23 is an exploded perspective view showing a structure of an embodiment in which a substrate to be remodeled on which a member for regulating a signal direction is mounted is subdivided and stored in a case, and the case is filled with a transparent resin.

[Explanation of symbols]

10 pachinko machine, 12 circuits / mechanism, 14 control board, 16 frame terminal board, 18 terminal board, 20 management computer, 100, 200, 300, 400, 4
04 board, 102,418 components, 104 component mounting surface, 106 spacer, 108 flexible substrate, 1
10, 124, 126, 128, 410 holes, 112, 1
14, 202, 216, 218, 262, 266, 32
0,332,414,416 Connector, 116,11
8, 120, 122 Notches, 130, 132, 14
2,146,160,164,172,174,17
6,178,208,212,220,334,33
6,366 conductor / wiring, 134,136 through hole, 138,140,150,162, TP1, TP2
Electrodes, 144 Non-component mounting surface, 148 Voltage regulator, 152, 154 power supply terminal, 180, 182, 184
Insulator, 204 cable end, 206 connector cover, 206a T-shaped part, 206b opening, 210 fixing part, 214, 322 sensor, 222 winding, 22
4 Yoke, 226 rotating magnet, 228, 230, 23
2 Return part, 234, 236, 238, 240, 24
8,250 directions, 242 signal input end, 244 signal output end, 246,344 photo coupler, 252 counter, 254 arithmetic unit, 256, 356, 358, 36
0,362 display, 258,272 evaluator, 26
0,302,367 inspection machine, 264,268,31
8,328 cable, 270 pulse generator, 30
4,369 transponder, 306 switching circuit, 30
8 ID number setting circuit, 310 battery, 312 connector detachment detection circuit, 314 cable modification detection circuit, 31
6 Transmission direction detection circuit, 324, 330 plug, 32
6,340,348 flip-flop, 338 fuse, 342 interface circuit, 346 hour counter,
350 logic circuit, 352 detector, 354 waveform shaping circuit, 364 cover, 402 case, 406 gap, 408 lid, 412 slit.

[Procedure amendment]

[Submission date] April 19, 2002 (2002.4.1
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Terminal board for game machine (for preventing fraud) and inspection machine

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board to be controlled for remodeling or replacement, such as a board used for outputting a signal from a pachinko machine control device to a pachinko parlor management computer. More particularly, the present invention relates to a substrate provided with a member for preventing modification or replacement of the substrate.

In the present application, a component mounted on the surface or inside of a substrate is removed or replaced, a component is added to the surface or inside of the substrate, or a conductor pattern formed on the surface or inside of the substrate is removed. Or short-circuiting or adding a conductor pattern to the surface or inside of the board, replacing the board alone or together with its accessories with another board, and abandoning it prematurely without completing it. Collectively referred to as "modifications".

Further, in the present application, a person who intends to carry out "modification" and a person who has already carried out "modification" are both referred to as "modifiers". Whether the term "modified person" in the text means a person who intends to carry out the modification or a person who has already carried out the modification has been understood in accordance with the context and the sentence and in accordance with the common sense of those skilled in the art.

[0004] In the present application, a substrate that can be a target for remodeling is referred to as a "substrate to be remodeled". In the present application, the description will be made by taking the pachinko board terminal board as an example, but this is for the purpose of embodying the description and further promoting the understanding of the reader,
It is not intended to limit the technical scope of the present invention. INDUSTRIAL APPLICABILITY The present invention is not limited to pachinko machines and other gaming machines, but can be applied to various types of boards whose modification or replacement is to be restricted or prevented.

In the present application, not only various circuit elements such as passive elements, active elements, and integrated circuits, but also functional parts such as connectors mounted on a substrate are referred to as “parts” mounted on the substrate.
Shall be applicable. Further, in the present application, a member attached to the substrate in order to prevent the remodeling of the substrate is also regarded as a “component” mounted on the substrate. Some embodiments employ measures to prevent such “parts” from being removed and replaced.

[0006]

[Prior Art] One of the necessary points in the management and operation of pachinko parlors is to avoid inciting the gambling of players,
In some cases, the player may not be unreasonably disadvantaged. As one of the measures to this end, the pachinko industry and the government offices and agencies that have jurisdiction over this will install devices on each pachinko machine that control circuits and mechanisms (so-called “panels”) that control the way the balls come out. A measure is taken to make it difficult for the player to easily operate the ball from outside. Normally, this control device is mounted on the back of a pachinko machine as a control board on which a CPU is mounted.

[0007] Also, in the operation and management of pachinko parlors, illegal balls by an inexperienced person who has slipped into the player.
It is necessary to prevent operation of the board. For that purpose, it is necessary to monitor the state of a part / mechanism (so-called “frame”) to which the player can operate / contact, such as a firing handle, a ball rental machine, and a door. Furthermore, in order to efficiently manage a pachinko parlor, it is necessary to centrally manage information about the operation status of the board, for example, the frequency of jackpots and the status of symbol confirmation. From these needs, a device for outputting a signal indicating the state of the frame or the board is provided in each pachinko machine, and a signal from this device is received by a management computer called a hall computer and the like, and installed in the store. Generally, a system configuration is adopted in which the operating status of a large number of pachinko machines is grasped in real time. A signal output device from the pachinko machine to the management computer is called a terminal board or the like, and is generally mounted on the back of the pachinko machine.

FIG. 1 shows the system described above. The plurality of pachinko machines 10 installed in the pachinko parlors each include a circuit / mechanism 12, a control board 14, a frame terminal board 16
And a board terminal plate 18. The circuit / mechanism 12 is a frame and a board drawn together. The control board 14 is the above-described control device, and the frame terminal plate 16 and the board terminal plate 18 are the above-described signal output devices. The frame terminal plate 16 is a terminal plate for outputting a signal indicating the state of the frame.
Is a terminal plate for outputting a signal indicating the state of the board.
In addition, a plurality of pachinko machines 10 provided in the store,
It is under the management of the management computer 20.

The frame terminal plate 16 is essentially a terminal plate for outputting a signal from the pachinko machine 10 to the management computer 20. On the other hand, since the board is exclusively controlled by the circuit on the control board 14, the board terminal plate 18 is
4 is used as a terminal board for outputting the signal supplied from the management computer 20 to the management computer 20. The control board 14 is a CPU
And the like are mounted on the board, and the CPU executes control of the board. From the control board 14, a signal indicating the result, that is, a signal indicating the operation state of the board is output to the management computer 20 via the board terminal board 18. More specifically, the number and duration of “big hits”, “special electric
And the like, which specifies the number of times of the operation of the symbol, the number of times the symbol has been determined, and the like.

[0010]

Commercial games, such as pachinko machines, must be played fairly so that they do not unnecessarily entertain and have no unreasonable disadvantages for the players. However, various types of fraud, such as remodeling of pachinko machines, often occur. For example, there is a case in which a board terminal plate which is originally a signal output terminal plate is modified so that a signal for commanding an illegal or illegal operation can be supplied to a CPU on a control board. .

Typical methods for modifying the board terminal board and its surroundings include modifying the connector of the board terminal board, cutting, short-circuiting, or modifying the wiring pattern on the board terminal board, and modifying the board terminal board. Remove or replace parts, add parts on the board terminal board, remove the sealing seal of the caulking case that houses the board terminal board, remove the board terminal board itself from the pachinko machine, fake product / imitation There are various methods such as exchanging with a product, and forging or imitating the seal itself at that time, and sealing it again using it. Due to such various methods, the burden of the person in charge of the inspection for detecting the alteration of the pachinko machine has conventionally been very heavy.
Also, depending on the type and sophistication of the technique used, even a skilled inspector may not be able to easily find a modified pachinko machine.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is easy, low-cost, and quick to remodel various substrates typified by pachinko board terminal boards. Its purpose is to make it discoverable. For example, it is suitable to unify the external terminal boards of a pachinko machine that have been different for each maker, realize a high security board that is not tampered with, and provide an inspection machine that works with it.

[0013]

A substrate to which the present invention is applied, that is, a substrate to be remodeled, is a substrate on which components are mounted or a conductor pattern is formed on or on its surface. The present invention is characterized by including a trace holding member that holds a trace of modifying or attempting to modify the substrate, or by including an obstruction member that physically prevents modification of the substrate.

According to the preferred embodiment of the present invention including the trace holding member, traces such as modification of a substrate to be remodeled (for example, a terminal plate for a pachinko machine) can be left. Can easily and more reliably detect the fact of the modification. As a result, the labor of the inspector is reduced and the inspection work is made more efficient.
It is possible to contribute more easily and at lower cost than before. In addition, the rework will leave traces of it,
By providing the trace holding member in a form that can be seen by the remodeler, it is possible to psychologically work with the remodeler to discourage the remodeling of the board, thereby suppressing the remodeling itself, Each effect such as labor reduction becomes more remarkable.

According to the preferred embodiment of the present invention including the obstructing member, the modification of the substrate to be modified can be physically prevented. In addition, the provision of disturbing members is not only a psychological pressure to give up on remodeling, but also a psychological pressure that requires measures against disturbing members and a cost for measures for disturbing members. The remodelers may give up on the remodeling itself, given the economic pressure to do so. Therefore, the modification itself is less likely to be performed, and the inspection work by the inspector is labor-saving and quick. As described above, the present invention is useful for realizing fair management of a game store and appropriate enjoyment of a player more easily and at lower cost than before.

Further, according to the preferred embodiment of the present invention in which both the trace holding member and the obstructing member are provided, the effect of reducing the inspection labor becomes more remarkable. In addition, if the physical structure and circuit configuration are devised so that a single member has both functions of obstruction and trace retention, the effect of reducing inspection labor becomes more remarkable, and both functions are added. By doing so, enlargement and complication of the device configuration can be minimized. Further, according to an embodiment in which both a trace holding function and a jamming function are combined into one single member by devising a physical structure and a circuit around the target board to be remodeled, the trace holding and jamming functions are provided. , The enlargement and complexity of the device configuration can be minimized.

The trace holding member and the obstructing member in the present invention can be realized by devising the exterior structure of the substrate to be remodeled, by devising the shape, structure, arrangement and mounting circuit of the substrate to be remodeled, and There are those devising the interface means, those combining these as appropriate, and the like. Since these means can be realized by relatively simple measures, the present invention can be easily implemented and at low cost.

(1) Obstruction of cable disconnection, etc. As one of the embodiments belonging to the improvement of a part of the exterior structure of the board to be remodeled or the contrivance of the mounted parts, the board to be remodeled is replaced with another board (for example, a control board) or a device. There is an improved embodiment around a connector for connecting to a computer (for example, a management computer). As an example, an embodiment in which a member that physically hinders removal of a cable or a connector is mounted on a board to be remodeled, and it is difficult to repair a board to be remodeled or a component mounted on the board to be remodeled due to removal of a connector or a cable. There are embodiments and the like that cause damage.
Preferably, a cover-like member that physically hinders the removal of cables and connectors is mounted on the board to be remodeled,
The cover-like member may be damaged when detached by a strong force, or the mutual fixing portion between the cover-like member and the substrate may be damaged. In this way, the removal can be physically hindered and the trace can be held in an easily visible state. Psychological pressures on "modulators to break when removed" will also be exerted on them.

Of these effects, in order to enhance the effects of physical obstruction and psychological pressure, it is desirable to make the cover-like member colored or colorless (semi-) transparent. this is,
This also leads to improved visibility of traces. In order to enhance the effect of retaining traces, the cover-like member is formed from a material that is easily broken, or the cover-like member is fixed to the substrate to be remodeled using a strong fixing means (for example, a strong adhesive). In addition, it is effective to provide a current-carrying path for inspection at a position where the cover-like member is fixed on the substrate to be remodeled, so that the current-carrying path is damaged (disconnected) upon removal.

(2) Broadcasting of Remodeling Results etc. In an embodiment in which the invention of the shape, structure, arrangement, and mounting circuit of the substrate to be modified is combined with the device of the interface means for the inspector, the substrate to be modified is provided for each product. There is an embodiment in which identification information for identifying each lot or each product type, and monitoring results of various phenomena related to remodeling are wirelessly transmitted as responses. The term "response transmission" as used herein means that, when an inquiry is wirelessly received from an inspection machine or the like, a predetermined information is transmitted by automatically responding to the inquiry. Although the technology for wirelessly transmitting identification information itself has been studied and developed in various technical fields, in a preferred embodiment of the present invention, by adding not only identification information but also monitoring result information to a wireless transmission target, Multi-purpose utilization of the transponder on the board to be remodeled further reduces the labor of the inspector. In addition, a circuit for holding the trace of the modification so that the part or conductor which can be the target of the modification is made difficult to be touched by a resin mold by a resin mold or the like, and at the same time, information suitable for wireless transmission is obtained.

An example of the monitoring result information is information indicating that the plug at the end of the cable has been removed from the connector mounted on the board to be remodeled. This is information indicating that a cable for connecting to the device has been cut, and another example is information indicating that a change has been made to the signal transmission path. The detachment of the plug from the connector can be detected, for example, by incorporating a sensor for detecting the detachment of the plug into the connector and changing the content of the signal supplied to the transponder according to the output of the sensor, and the result is monitored. The result information can be supplied to the transponder. The disconnection of the cable is detected by inserting the wires for disconnection detection into the cable and changing the content of the signal supplied to the transponder in response to a phenomenon such as a short circuit caused by the disconnection. The result can be supplied to the transponder as monitoring result information. The signal flow can be modified by inputting a signal from around the circuit that regulates the signal transmission direction, evaluating the statistical validity (by time counting, comparing, etc.), and, based on the result, determining the signal to be supplied to the transponder. The content can be detected by changing the content, and the result can be supplied to the transponder as monitoring result information. It is desirable that the circuit for supplying the monitoring result information to the transponder be provided with a battery backup or the like so that the monitoring result information can be retained even when the power supply to the remodeling target substrate is cut off.

By adopting such a configuration, the inspector can detect traces of various modifications with little labor.
In addition, since the transponder is used for a variety of purposes, the number of members required for implementation is small.

(3) Conversion of identification information, etc. As an embodiment belonging to the invention of an interface means for a person in charge of inspection, a communication procedure between an inspection machine and a board to be remodeled,
In particular, some embodiments have a feature in adding an authentication procedure. The authentication procedure that can be executed in this embodiment includes a procedure for the inspection machine to authenticate that the substrate to be remodeled is genuine and has not been remodeled, and a remodeling that the inspection machine is a genuine inspection machine. There is a procedure for authenticating the target substrate. Preferably, these procedures are combined and executed as a mutual authentication procedure.

First, to execute a procedure for the inspection machine to certify that the substrate to be remodeled is genuine and has not been remodeled, the information contained in the code when the code is received from the inspection machine must be included in the information. A function to convert and transmit the code based on the code is provided in the substrate to be remodeled. When executing this authentication procedure, the inspection device transmits a code including information designating the code conversion content, and receives a response from the code to the remodeling target board. If the code received as a response is a code that has been converted according to the code conversion specified in the code that was sent earlier, the response was sent genuinely without modification. Can be considered. Conversely, if the code received as a response is not a code that has been converted in accordance with the code conversion content specified in the previously transmitted code, modification (including replacement)
Can be considered suspect. Through the execution of these procedures,
The inspection machine can obtain information on the authenticity of the substrate to be remodeled and the presence or absence of the remodeling and provide the information to the person in charge of the inspection. In addition, the procedure for the remodeling target board to certify that the tester is a genuine tester is essentially a procedure for the tester to certify that the remodeling target board is genuine and has not been remodeled. This is a procedure in which the main customer is replaced in the procedure.
Through the execution of this procedure, the remodeling target board can obtain information on the authenticity of the inspection machine, make no response, or return a dummy response.

In the mutual authentication procedure combining the two, first, a query is transmitted from the inspection machine to the board to be remodeled. This is a transmission of an authentication request from the inspection machine to the board to be remodeled, and includes information designating code conversion contents. If the remodeling target board is a genuine product and has not been remodeled, the remodeling target board generates a response by transcoding the question according to the information in the question, and transmits the response. At this time, the inspection machine receives this response and checks it with the question transmitted to the destination to determine whether or not the response has been transmitted is a genuine product and the remodeling target board has not been remodeled,
Can be determined. Therefore, it can be said that the response transmitted by the remodeling target board to the question from the inspection machine is the transmission of the authentication request from the remodeling target board to the inspection machine.

Further, the inspection machine converts the code of the response based on the information included in the response, and transmits the code as a re-question to the board to be remodeled. Therefore, it can be said that the response from the inspection machine includes information designating the code conversion content.
In addition, it can be said that the re-question from the inspection machine is tentative authentication for the substrate to be remodeled.

If the board to be remodeled is a genuine product and has not been remodeled, the board to be remodeled generates and transmits a re-response by transcoding the re-question in accordance with the information during the re-question. At this time, the inspection device receives the re-response and checks it with the re-query transmitted to the destination. Thereby, it can be determined whether or not the re-response is a genuine product and a remodeling target board that has not been remodeled. Therefore, it can be said that the re-response from the remodeling target board is the authentication to the inspection machine.

By performing such a mutual authentication procedure, not only can the remodeling / authentication of the substrate to be remodeled be determined, but also the authenticity of the inspection machine can be determined. Interrogation of the question / response procedure by a modder using the receiving device can also be impeded. This leads to the prevention of the modification itself.

Also, of the signals exchanged between the inspection machine and the board to be remodeled, it is added to a part related to communication control including a start bit / stop bit and a signal transmitted from the board to be remodeled to the board for remodeling. It is desirable that a portion other than the portion related to the remodeling monitoring result information has a fixed code length. In this case, by performing the determination regarding the code length of the received (re) question or (re) response, the (re) question or (re) response using the signal of the incorrect code length is detected. , A predetermined operation, for example, no response, dummy response, determination of abnormality, and the like. Furthermore,
If the code length of the (re) question from the “inspection machine” is not a predetermined length, in response to the “question” that is likely to be a fake, a bit string having the same code length as the “question” is obtained. It is desirable to send it as a dummy response. As a result, the elucidation work including the identification of the code length by the remodeler can be disturbed or obstructed. Also, the specification of the code conversion content is
For example, it can be performed by (re) question / response code specific bits or a combination thereof ("conversion code"). The remodeling target board and the inspection machine hold, for example, the same information that associates the conversion code with the code conversion content, and uses this information to specify the code conversion content based on the conversion code.

As described above, by performing a (mutual) authentication procedure involving code conversion and eliminating the need for use of fixed identification information, in addition to reducing the labor of an inspector through the realization of a non-contact inspection, This has the effect of facilitating the detection and prevention of modifications. Further, even if the code conversion rule is identified by the remodeler up to its details, it can be dealt with by changing the code conversion rule from the next lot or the like, so that the manufacturer can easily deal with it. These are effects that cannot be obtained when the conventional RFID technology is simply applied to the present technical field. In addition, components mounted on the surface of the board to be remodeled and conductors that appear on the surface of the board to be remodeled,
Concealment by resin potting or the like so as not to hinder the transmission / reception of questions / responses, and to effectively use the inner layer of the substrate to be remodeled in order to reduce the number of components and conductors provided on the surface of the substrate to be remodeled. In order to make it difficult to decipher the conductor arrangement and the like in the inner layer, the surface of the substrate to be remodeled is arranged with solid conductors as much as possible, so that the effect of preventing remodeling and the effect of retaining the trace of remodeling are further enhanced. When transmitting a (re) response from the remodeling target substrate to the inspection machine, it is desirable to transmit monitoring result information.

(4) Subdivision etc. Among the preferred embodiments of the present invention, one of the features of the structure of the substrate to be remodeled is that a substrate which was conventionally one substrate is replaced by a plurality of vertically long substrates. Subdivided into substrates. Also, the material of the case is selected so that the case, its lid and the gap in the case are transparent. For example, both the case and its lid are formed of a transparent resin or the like, and the gap in the case is filled with a transparent resin or the like. Each vertical substrate is housed in a case such that both front and rear surfaces thereof can be viewed from a gap between the vertical substrates. As a method of fixing each of the vertically long substrates to the case, for example, a method of providing slits at a predetermined pitch at the edge of the case and sandwiching each vertically long substrate may be used.

According to this structure, the front and back surfaces of each vertically long substrate can be visually observed through the lid or the side surface of the case. That is, there is almost no portion that becomes difficult to see when attached to a pachinko machine or the like. for that reason,
Traces of the modification can be easily found, and the labor of the inspector is reduced. Furthermore, by filling the gap in the case with transparent resin, etc., each vertically long board can be firmly fixed in the case and the remodeling can be physically hindered. It is also possible to detect the exchange for goods. Since the crimping case and its sealing seal are not required, a part of the conventional technique cannot be used, so that the psychological pressure effect is increased. Furthermore, since the board to be remodeled is subdivided, it is possible to completely or almost specify which signal has been tampered with only by inspecting which vertical board has been remodeled. Can contribute. By providing a signal direction regulating member or the like on each of the vertically long substrates, the function of preventing remodeling and holding traces of remodeling can be enhanced.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. The following description is based on the configuration of the system and the base shown in FIG. 1 in order to keep the description simple. In addition, although the substrate according to each embodiment can be suitably used as the board terminal plate 18 of the pachinko machine 10, it can also be used in another type of device or as another type of substrate. . Further, in the following description, common or corresponding members between the related art and the embodiment of the present invention or between the embodiments of the present invention are denoted by the same reference numerals, and overlapping description may be omitted. .

(1) Cable disconnection obstruction FIG. 2 shows the structure of a board according to an embodiment of the present invention.
The substrate 200 shown in this figure is a pachinko board terminal plate 18.
In this case, an effective countermeasure has been taken for a modification of the board that involves modification around the connector.

As described above, the board terminal plate 18 of the pachinko machine 10 is connected to the control board 1 on the same pachinko machine 10.
4 and the management computer 20. For the connection, a cable composed of a predetermined number of signal lines is used, and a connector for connecting the cable is provided on the board terminal plate 18. The signal flow is essentially a flow from the control board 14 to the management computer 20 via the board terminal board 18. The inventor paid attention to an incorrect circuit that changed the direction of signal flow by removing, replacing, or adding wires and components on the board terminal board 18 during various modifications. Are connected / attached to allow a false signal to flow, or are replaced with counterfeit or imitation panel terminal plates 18 and the like, and there are not a few things that involve connector attaching / detaching operations. The technical means adopted in the present embodiment is to provide a member near the connector that hinders the attachment / detachment of the cable or the removal of the connector, so that their traces remain in a state that can be easily visually recognized,
Such technical means.

As shown in FIG. 2C, a connector 2 for connection to the control board 14 or the management computer 20 is provided.
02 is usually arranged at the edge of the substrate 200 to be remodeled. Reference numeral 204 in the figure denotes a cable end of a cable for connection to the control board 14 or the management computer 20.
Nasu. Further, in this embodiment, FIGS. 2A and 2B
The connector cover 206 is provided as shown in FIG. The connector cover 206 cooperates with the substrate 200 to
02 (and a part of the cable end 204 in the cable connection state). Also, at least one of the edges of the connector cover 206 is the same as that shown in FIG.
The shape is T-shaped as shown in FIG. This T-shaped part 206
a is a conductor layer 208 formed on the surface of the substrate 200;
2C is fixed to a portion 210 indicated by a broken line in FIG. In this part 210,
As shown in FIG. 2 (C), it is desirable to form a pattern conductor 212 that forms a current-carrying path for inspection. Further, detection electrodes (test points) TP1 and TP1 for inspection are used so that they do not mechanically conflict with or interfere with the connector cover 206 or the like.
P2 is formed on the surface of the substrate 200 in advance. Further, the connector cover 206 is formed of a material that is difficult to bend and is easily broken, for example, plastic having low viscosity. Connector 20
The connector cover 206 is desirably colorless and transparent in order to visually recognize the connection state of the cable end 204 and the cable end 204 and remarkable processing.

When the substrate 200 according to the present embodiment is mounted on the pachinko machine 10 or the like as the board terminal plate 18 or the like, a cable connection operation is performed before or after that. That is, the operation of connecting the cable end 204 to the connector 202 through the opening 206b provided in the connector cover 206 is performed. Once this operation is performed, the opening 206b
Cable end 204 to connector 2
02 cannot be easily removed. That is, since the connector cover 206 is in the way and it is difficult to attach and detach the cable, the remodeler becomes a physical obstacle to the remodeling and is a psychological pressure. The connector cover 206 is connected to the connector 20 mounted on the substrate 200 side.
It also hinders the work of removing 2.

Of course, the cable end 204 can be forcibly pulled out or the connector 202 can be removed. However, in such a case, the T-shaped portion 206a of the connector cover 206 breaks in most cases. Of the pattern conductor 212, the damage of which is difficult to repair occurs. Therefore, the inspector needs the connector cover 2
06 or its surroundings, and by checking and measuring the continuity or the circuit constant value between the test points TP1 and TP2, removing the cable or connector after starting the cable installation and use. Can be grasped easily and accurately.

Here, one end of the connector cover 206 is a T-shaped portion 206a, but the shape is not limited to the T-shape because this portion only needs to function as a kind of wedge.

The present embodiment can be used together with the covering structure shown in FIG. The covering structure shown in FIG. 3 substantially covers the entire surface 104 on the side on which the component 102 is mounted on the front and back surfaces of the substrate 100 which is formed of an insulator and is used as the board terminal plate 18 or the like. This is a structure covered with a flexible substrate 108 made of an insulator via a spacer 106 made of an insulator such as a plastic. Part 102
And the circuit pattern on one side of the substrate 100 (the component mounting surface 10
4) mounted or adhered or embedded in the substrate 100. The thickness of the spacer 106
The height of the tallest is the same or slightly thicker. The spacer 106 has through holes or blind holes 110 at positions corresponding to the mounting positions of the components 102 so as to accommodate the components 102, cutouts 120 and 122 so as to avoid conflict with the connectors 112 and 114, and furthermore, Notches 116 and 118 are also provided at the edge of the spacer 106.
Each is provided. It should be noted that 124 and 126 in FIG.
Reference numerals 128 denote mounting holes provided at the corners of the substrate 100, the spacer 106, and the flexible substrate 108, respectively. The mounting to the pachinko machine 10 or the like is performed by fastening using these holes.

The flexible substrate 108 has a detection electrode 138 provided on an upper surface thereof → a pattern conductor 130 → a through hole 134 → a pattern conductor 132 provided on a lower surface thereof → a through hole 136 → an upper surface thereof An energization path of the provided conductor 142 → detection electrode 140 is provided. Further, an adhesive for bonding and fixing the spacer 106 to the component mounting surface 104 of the substrate 100 and an adhesive for bonding and fixing the flexible substrate 108 to the spacer 106 can be provided so that a remodeler cannot easily peel it off. Since the adhesive strength is as high as possible, it is difficult to remove or replace the flexible board 108, the spacer 106, or the like, or to modify the circuit pattern by removing or replacing the component 102 or removing or changing the circuit pattern. In addition, if the forcible peeling is performed, the flexible substrate 108, the spacer 106, the conductor of the substrate 100, and the like are usually damaged. Even if the damage is kept to a slight extent by a skillful operation, the pattern conductors 130 and 132, which are thin patterns or thin conductor layers formed on the flexible substrate 108, are disconnected or distorted, and the detection electrodes 138 and 140 The circuit constant values (resistance, inductance, capacitance, etc.) change between them. Therefore, the inspector can easily recognize the fact of the remodeling or the like by visually recognizing a damaged part (tear, break, semi-turbid part, etc.) due to the remodeling or by measuring the circuit constant value using a simple device such as a tester. This also has the effect of psychologically forcing short-lived remodelers to give up on remodeling. Although it is possible to embed the energization path inside the substrate 100, the configuration as shown in FIG. 3 is more effective in terms of physically obstructing access to the component 102.

The connectors 112 and 114 in this covering structure are connectors provided on the edge of the board 100 and used for connection with the management computer 20 and the control board 14 side. A connector cover can be provided in the form shown in FIG. 2 so that the substrate 108 is damaged. It is also effective to fill the gap between the notch of the spacer 106 and the flexible board 108 and the connector with a potting resin or the like as shown in FIG. 10 later.

(2) Broadcast of Modification Detection Results FIG. 4 shows the structure of a substrate 300 according to an embodiment of the present invention. FIG. 5 shows an inspection machine 30 according to this embodiment.
2 is shown. One of the features of this embodiment is that the inspection machine 3
02 is transmitted from the transponder 304 on the substrate 300.
Is modulated by the identification information and the monitoring result information by the
Numeral 02 is that the state of the board 300 can be known by receiving this.

With respect to the board terminal plate 18 and similar boards, that is, boards whose remodeling is desired to be prevented as much as possible, not only that the remodeling has been performed, but also what kind of remodeling has been performed on the board. It is also important to know whether or not to alter the substrate itself. In the present embodiment, not only the identification information is attached to the substrate 300, but also what kind of remodeling has been performed can be notified to the inspector in real time by simple and efficient means. The remodeling itself is hindered by the exterior structure.

As shown in FIG. 4, a switching circuit 306 and an ID number setting circuit 308 are mounted on a substrate 300 together with a transponder 304. ID number setting circuit 30
Reference numeral 8 denotes a circuit for generating an ID number, which is one form of identification information. The switching circuit 306 is a circuit that combines the ID number from the ID number setting circuit 308 and various types of monitoring result information to generate a series of modulation signals. Transponder 30
4 is a member that changes the spatial impedance according to the modulation signal supplied from the switching circuit 306,
It is driven only by the modulation signal. This transponder 304
Can be realized by some kind of semiconductor. Therefore, in this embodiment, when an unmodulated radio signal having a predetermined frequency, for example, arrives from outside, the transponder 304 responds according to the modulated signal including the ID number and the monitoring result information.
Is modulated. In other words, the unmodulated radio signal projected from the outside is re-emitted after being modulated by the ID number and the monitoring result information.

In the circuit shown in FIG. 4, three types of monitoring result information are supplied to the switching circuit 306. One of them is from the connector disconnection detection circuit 312.
The other is supplied from the cable alteration detection circuit 314, and the other is supplied from the transmission direction detection circuit 316.

The connector drop detection circuit 312 is a sensor for detecting that a cable (for example, a flat cable) 318 for connection to the management computer 20 has been disconnected from the output connector 320 mounted on the substrate 300. 322. The sensor 322 is, for example, a photo interrupter. This photo interrupter is
When the plug 324 at the end of the cable 318 is connected to the output-side connector 320, light from the light-emitting portion is blocked and does not reach the light-receiving portion. It is incorporated in the output side connector 320. The connector disconnection detection circuit 312 further includes a flip-flop 32 that changes its output when the plug 324 is removed from the connector 320.
6. If the operation logic of the sensor 322 is a logic that the plug 324 is short-circuited to the ground when the plug 324 is inserted into the connector 320 and is open when the plug 324 is not inserted, the flip-flop 326 causes the sensor 322 to be opened. And "1".
In the illustrated example, the power supply voltage (+ Vdd) is applied to the power supply terminal of the flip-flop 326 from the backup battery 310 mounted on the substrate 300, and the power supply terminal is connected to the input terminal via the resistor R1. When the sensor 322 is in a short-circuit state, the input to the flip-flop 326 is at the ground potential, and when the sensor 322 is in an open state, it is almost at the power supply voltage (+ Vdd).

Therefore, the connector drop detection circuit 312 can detect that the plug 324 has been removed from the connector 320. Also, cables 318 and 3
The power supply voltage of the substrate 300 (+ Vd
Since the flip-flop 326 is backed up by the battery 310 which is a power supply of a different system from that of d), even when the power supply voltage (+ Vdd) supplied from the outside is cut off, the flip-flop in the connector disconnection detection circuit 312 is cut off. The plug removal fact in the past can be stored in the plug 326. Since the output of the flip-flop 326 is supplied to the switching circuit 306 and used as a part of the modulation signal, when a radio signal is projected using the inspection device 302, the ID number or the like indicating that the plug 324 has been removed from the connector 320 is output. Together with the inspection machine 302. For example, when the board 300 is mounted on the pachinko machine 10 or the like, the contents of the flip-flop 326 are reset, and use is started. , Information that the plug 324 has been disconnected from the connector 320 is held by the flip-flop 326, and when the inspector performs a check with the inspector 302, the information is transmitted to the inspector 302 together with the ID number and the like. Sent.

The switch is not limited to the photointerrupter, and any switch whose state changes in response to the removal of the plug 324 can be used as the sensor 322. Although the output side connector 320 is described here as an example for the sake of simplicity, the plug 330 provided on the cable (for example, a flat cable) 328 for connection to the control board 14 is connected to the board 300. A circuit similar to the connector disconnection detection circuit 312 may be provided to detect removal from the upper input side connector 332.
Further, as shown in FIG. 11, a short-circuit wire 366 is embedded in the cable 318, and when the plug 324 is dropped, the short-circuit wire 366 is disconnected from the connector 320, and the input to the flip-flop 326 changes. The dropout detection circuit 312 can also be implemented.

Next, the cable alteration detection circuit 314 has a wiring 334 connected to the backup power supply voltage (+ Vcc) from the battery 310 and a wiring 336 connected to the ground as wiring formed on the substrate 300. are doing.
These wirings 334 and 336 are arranged on the substrate 300 with a sufficient interval so that electrical insulation is maintained. Further, a fuse 338 that is cut off when + Vcc is grounded is provided on the wiring 334. Further, one end of the fuse 338 on the connector 320 side and the wiring 3
36, a resistor R2 having a sufficiently high value is provided. The connection end of the resistor R2 and the fuse 338 is connected to the flip-flop 340, and the potential at this point is L
When the level goes down, the flip-flop 340 outputs an H level. The wires 334 and 336 are extended into the cable 318 via the connection between the connector 320 and the plug 324. In the cable 318, the wires 334 and 336 are covered and arranged so that electrical insulation is maintained and adjacent to each other. The conductor arrangement on the management computer 20 side, including the connection with the connector 339, is designed so that electrical insulation is maintained between the wiring 334 and the wiring 336.

Therefore, in a state where no modification or the like is performed, electrical insulation is maintained between the wiring 334 and the wiring 336. Since the resistor R2 has a high resistance, the potential appearing at the input terminal of the flip-flop 340 driven by + Vcc has a level substantially equal to + Vcc, that is, an H level. However, when the cutting edge of the tool is inserted into the cable 318 for modification or the like, the wirings 334 and 33 are often used.
6 conducts electrically through the cutting edge of the tool, which is usually metal. Then, the fuse 338 is cut off due to the flow of the ground fault current, and the input to the flip-flop 340 falls to substantially the ground potential, that is, the L level. This level change is stored by the flip-flop 340 backed up by + Vcc, and the switching circuit 306
Supplied to Thus, the cable alteration detection circuit 31
According to 4, the inspection machine responds to the inquiry in the same manner as the unplugging monitoring result, indicating that there is a high possibility that the cutting edge of the tool has fallen into the cable 318, and thus there is a high possibility that there is a remodeler who tried to cut the cable 318. The notification can be sent to the 302 side.

The transmission direction detection circuit 316 is used together with an interface circuit 342 that regulates the signal transmission direction. The interface circuit 342 is a circuit that regulates the signal flow so that the signal flows from the control board 14 side to the management computer 20 side.
A photocoupler 344 or the like connected to the second side and a light receiving unit connected to the connector 320 can be provided. Transmission direction detection circuit 3
Reference numeral 16 has a time counter 346 for counting a period in which no current flows in the light receiving portion of the photocoupler 344. The count value of the time counter 346, that is, the photocoupler 3
When the measured value during a period in which no current flows in the light receiving section 44 reaches a predetermined time, the flip-flop 348 latches + Vdd, and its output becomes H level, that is, almost + Vdd level.

Here, when there is no signal, the photocoupler 34
It is assumed that the signal logic is set so that a current flows through the light emitting unit 4 and does not flow during signal transmission. In addition, it is assumed that the predetermined time is set to be longer than the maximum value of the no-signal continuation time at the time of non-modification, and preferably shorter than the minimum value of the no-signal continuation time that may be caused by the modification. . At this time, if the signal flow has not been modified, the output of the flip-flop 348 remains at the L level, and the signal flow is modified. At that point, the output of flip-flop 348 changes to H level. + Vc
flip-flop 34 backed up by c
The output of 8 is supplied to the switching circuit 306 and used as a part of the modulation signal. Therefore, it is possible to notify the person in charge of the inspection that the possibility that the modification including the modification of the signal flow has been performed is high as in the case of removing the plug or cutting the cable. Note that the logic circuit 350 is a circuit for supplying a clock for counting to the time counter 346 and supplying a power reset signal.

As shown in FIG. 5, the inspection machine 302 transmits a radio signal relating to an inquiry to the substrate 300 and receives a response from the transponder 304 in response thereto.
Two. The inspection machine 302 further includes a waveform shaping circuit 354 for shaping the received waveform related to the response, a connector disconnection detection circuit 312, and a cable remodeling detection circuit 3 respectively.
14. Transmission direction detection circuit 316 and ID number setting circuit 3
08, a display 356 that displays the information generated by
358, 360 and 362. The inspector may use these indicators 356, 358, 360 and 362
To see if the board 300 has been replaced, what the ID number of the board 300 is,
Information such as whether or not the connectors, related cables, and signal directions have been tampered with. The labor required for this is small, and there is no need to contact a probe or the like of a tester. Since the ID number and various types of monitoring result information are transmitted and received simultaneously and using the same member, the manufacturing cost of the substrate 300 is unlikely to be improved.

Further, in the present embodiment, the transponder 30
4 so as not to hinder the response by the C.4 or the cable connection using the connectors 320 and 332, but to make the modification physically difficult, as shown by the shaded solid line in FIG. A covering 364 is provided. Covers parts and conductors that can be modified 3
It is desirable to cover as much as possible with 64. Cover 364
Can be realized in the form of, for example, a mold made of resin or the like, application of paint, a metal plate housing, a clear resin case, or the like. As shown later in FIGS. 9 and 10, resin potting for each component may be used. If the transmission of the response is not hindered, the transponder 304 may be covered with the cover 364. With this configuration, according to the present embodiment, the remodeling can be physically hindered, and even if the remodeling is performed, a trace of the remodeling remains on the cover 364. This is effective in preventing and finding alterations. As a modification, a circuit shown in FIG. 11 can be given. In the embodiment shown earlier, the battery 31
0 is used to hold the monitoring result on each flip-flop. Instead of the battery 310, backup is performed if the pachinko parlor is closed (for example, from about 11:00 p.m. to about 10:00 a.m.). A large-capacity capacitor that can be used, for example, a supercapacitor (trade name) can also be used. Note that the same applies to the above-described embodiment. However, when the backup is completed, the storage contents are reset to contents indicating that no modification is performed, such as “no removal”.
Preferably, a preventive measure such as a tie wrap is taken to prevent accidental disconnection of the cable.

(3) Identification Information Conversion FIGS. 6 to 8 show a question / response procedure between the inspection machine 367 and the board 300 executed in one embodiment of the present invention. 9 to 11 show the substrate 3 according to the present embodiment.
00 is shown.

In the present embodiment, preferably, the pattern conductor formed on the component mounting surface (first layer) is only a conductor for mounting the component, and a through hole is used immediately below or in the vicinity of the conductor to use the second layer ( Inner layer A surface) or third layer (inner layer B)
Surface). The circuit pattern is mainly configured using the second layer and the third layer. The first to third layers are
It is desirable to use a solid ground except for a portion where the pattern conductor is formed and a slight gap for insulation. Also,
It is desirable that the fourth layer drawn as the lowermost layer in FIG. 9 be entirely grounded. The use of such a conductor arrangement makes it difficult to read the circuit pattern. In FIGS. 9 and 10, a cover 364 for making remodeling difficult and for holding traces of remodeling is realized by a component that can be a target for remodeling, a resin potted on a conductor, or the like. More specifically, after mounting the surface mount components, resin coating is performed. In order to make it difficult to visually recognize the component, it is desirable to use a resin having a color as dark as possible, such as black, and a resin having low transparency. Conversely, to make it easier to discover the fact of modification, it is better that the resin is a transparent or translucent resin that is as light in color as possible. Although the substrate 300 is a four-layer substrate in the illustrated example, the procedure according to the present embodiment can be performed on a substrate having a smaller or larger number of conductor layers.

In the present embodiment, monitoring result information is also obtained in the same manner as in the above-described embodiment. As a circuit for displaying the monitoring result information, a circuit included in the embodiment described above can be used. Monitoring result information
For example, it is transmitted after being added to an a-bit code, which will be described later, but description of the monitoring result information is omitted in the following description.

This embodiment is different from the substrate 300 having the structure shown in FIGS.
7 has a feature in a procedure for mutually authenticating with the C.7. The remarkable effect obtained by the present embodiment is that the responder 369 can be removed from the substrate 300 and attached to a forged / forged substrate to cover the remodeling (especially replacement), which can be an effective measure against remodeling. is there. That is, in the present embodiment, since the response from the substrate 300 is not fixed and changes appropriately as described later, it is possible to accurately confirm whether or not the substrate 300 is a genuine product and has not been modified. . Further, the regularity of the question / response code is hard to be noticed by the remodeler. In this embodiment, the inspection device 36
An inquiry (question) is issued from the 7 side to the substrate 300 by infrared rays, and a response to the inquiry is transmitted from the transponder 369 on the substrate 300 by infrared rays (for example, light emission output from an LED). The transponder 369 according to the present embodiment includes, for example, a head part including an infrared sensing element and an infrared light emitting element, and circuits and components for driving the head part. The head portion is placed outside the potting range so that infrared light can be transmitted and received (or potted with a transparent resin). Circuits and components for driving the head portion should be included in the potting target. Also,
Similarly, the detector of the inspection machine 367 is configured to transmit and receive infrared rays.

Next, a procedure relating to a question / response between the inspection machine 367 and the substrate 300 will be described. Note that x, K, M,
N is a natural number, a and b are natural numbers of 2 or more, and i and j are natural numbers of a or less. Also, hardware for executing (re) question, (re) answer, collation, code conversion, and the like, and members for holding and storing information necessary for the purpose are not shown in the drawings for simplification. However, those skilled in the art referring to the disclosure of the present application will be able to sufficiently design them according to common sense in the art.

As shown in FIG. 6, this procedure is performed by the inspection machine 3
It begins with the question sent from 67 (368). The transponder 369 mounted on the substrate 300 returns some response whether or not this question is a question from the authentic tester 367 (370, 372). For example, although the code length of the question from the inspection machine 367 is previously determined to be a bit, the code length x of the question actually received is
Is not an a-bit, the question may be a fake originating from a device other than the authentic tester 367, for example, a decryption device prepared by a modder. Therefore, to disturb the remodeler, a bit string having the same code length as the code length x of the received question is transmitted as a dummy response (370). On the other hand, when the code length x of the actually received question is a bit, there is room for recognizing that the question is transmitted from the genuine inspection machine 367. Therefore, in this case, the board 300 converts the code specified by the received question (in FIG. 6, Code
(M conversion) is applied to the question to generate a response, and the generated response is transmitted from the transponder 302 (37).
2).

When the inspection device 367 receives the response transmitted from the substrate 300, the inspection device 367 collates the content of the previously transmitted question with the received response (3).
74). When the collation detects a situation where the code length is different, code conversion is not performed as specified, or the like, the inspection machine 367 may have modified the substrate 300. A notice is displayed to alert the person in charge of inspection (376). On the other hand, when such a situation is not detected, that is, when there is room to recognize that the substrate 300 has not been modified, the inspection machine 367
Generates a re-question for the response by applying code conversion (CodeN conversion in FIG. 6) specified by the response received from the substrate 300 in order to give the board 300 a certain degree of authentication. Then, the generated re-question is transmitted to the substrate 300 side (378).

The board 300 receives this re-question,
The content of the response transmitted earlier is compared with the received re-question (380). When the collation detects a situation where the code length is different, the code conversion is not performed as specified, or the like, the board 300 is attached to the authentic inspection device 3.
It is determined that it is not a re-question from 67, and the execution of the subsequent procedure is stopped (382). On the other hand, when such a situation is not detected, that is, when it is recognized as a re-question from the genuine inspection device 367 and to give authentication to the substrate 300, the substrate 300 is The code conversion specified by the re-question received from the inspection machine 367 (C in FIG. 6)
The re-question is applied to the re-question to generate a re-response to the re-question, and the generated re-response is transmitted to the inspection device 367 using the transponder 369 (38).
4).

The inspection machine 367 receives this re-response and checks it against the contents of the re-question (386). When a condition such as a difference in code length or code conversion not being performed as specified is detected by this collation,
The inspection machine 367 calls attention to the person in charge of the inspection by displaying, for example, the possibility that the substrate 300 has been modified, or the like (388). On the other hand, when such a situation is not detected, that is, when it is recognized that the substrate 300 has not been remodeled, the inspection machine 367 displays a message to that effect (390).

The specification of the code conversion content is, for example,
This is performed by a specific bit or a combination of the a-bit (re) question / response. Further, the substrate 300 and the inspection machine 3
At 67, the conversion code and the code conversion content are stored in association with each other, and this storage is referred to by the conversion code specified by the (re) question or response to decode the code conversion content to be executed. ·Identify. It is assumed that the stored content on the substrate 300 is the same as that on the inspection machine 367. Also, as an executable code conversion, for example,
Prepare designated bit inversion, designated scramble, etc. FIG.
In the example of a = 20 bits shown in FIG. 8 and FIG. 8, the 0th bit and the 19th bit indicate the start and end of the code, respectively.
Since it is p) bits, for example, the i-th bit and the j-th bit among the remaining 18 bits are used as bits for specifying code conversion contents.

For example, when the board 300 receives the a-bit code and the combination of the i-th bit and the j-th bit is “01”, the code conversion by the conversion code Code 1 is designated by the inspection machine 367. And performs a conversion process using the conversion code Code1 on the 18 bits excluding the start bit and the stop bit,
By adding a start bit and a stop bit to the resulting code, a response to the tester 367 is generated. Upon receiving this response, the tester 367 determines that the combination of the i-th bit and the j-th bit “11”
It is determined that conversion by the conversion code Code3 is designated by the substrate 300, and the conversion code Cod is converted into 18 bits excluding the start bit and the stop bit.
The conversion process according to e3 is executed, and a start bit and a stop bit are added to the resulting code, thereby generating a re-question for the board 300. Substrate 30
Since the combination of the i-th bit and the j-th bit of the received re-query is “00”, it is assumed that code conversion by the conversion code Code0 is specified by the checker 367, and the start bit and the stop bit are set to 0. Excluding 1
By executing conversion processing using the conversion code Code0 on the 8 bits and adding a start bit and a stop bit to the resulting code, a re-response to the inspection device 367 is generated. It is desirable that the contents of the code conversion be relatively simple, for example, as shown in FIG. 8, that is, the contents can be executed without installing a complicated processing circuit and processing software. The example shown in FIG. 8 is an example in which the conversion for partially inverting the bits and rearranging all the bits is associated with the conversion code Code0.

As described above, in the present embodiment, since the inspection is performed in a non-contact manner, the labor of the inspector is reduced. Also, because we are performing a procedure that involves transcoding,
The content of the response from the board 300 changes depending on what kind of code is used for the question. Therefore, remodeling by a remodeler who does not strictly understand the code conversion rules (the position of the bit designating the conversion content, the correspondence between the conversion code and the code conversion content, etc.) can be detected almost certainly.

This point will be described more specifically based on the above example. First, for example, in step 368 in FIG. 6, it is assumed that a query is generated using a pseudo noise code generator using a code sequence of PN15. This code generator can generate a cyclic bit string of 2 ¹⁵ −1 = 32767 bits for an arbitrary initial value. There are 32767 kinds of consecutive 18-bit codes that can be cut out from the cyclic bit string. At the time of interrogation, one of the 32767 types is randomly selected, a start bit and a stop bit are added, and the resulting 20-bit bit string is transmitted as an interrogation. In the case of the genuine substrate 300, that is, a product that has not been modified, the designated code conversion content is correctly decoded by referring to the i-th bit and the j-th bit in this bit string, and a question is asked according to the result. It will send the correct response obtained by transcoding. However, if the substrate that receives the question from the inspection machine 367 is a modified product (including imitation products and counterfeit products), a correct response will not be obtained unless the modifying person determines the rules for code conversion. Of course, the probability of sending the correct response by chance is not zero, but it is negligibly small. That is, the value that a fake “response” can take is 2
^a−2 = 262144 cases, and therefore the probability of a coincidence in one transmission is a low probability of 1/262144. In view of the fact that the transmission for mutual authentication is performed over the entire substrate, the probability that the substrate 300 is not a genuine product but accidentally recognized as a genuine substrate 300 is (1) in the example of a = 20. / 3276
7) × (1/2262144) ³ = 1.69 × 10 ^{-21, which} is a very small probability.

Further, even if the code conversion rule is found by the remodeler up to the details, it can be dealt with by changing the code conversion rule from the next lot or the like, so that the manufacturer can easily deal with it. is there. This is the traditional RF
This is an effect that cannot be obtained when the ID technology is simply applied to this technical field.

Further, the inspection machine 367 not only performs the authenticity judgment of the substrate 300 by the collation inspection, but also
Since the authenticity determination of the inspection machine 367 by the collation inspection is also performed on the side, not only can the modification of the substrate 300 be easily detected, but also the obstruction of the work of elucidating the question / response procedure by the decryption device prepared by the modification person. You can also. Also, since the code conversion content is specified at the time of question, response, and re-questioning, and the mutual authentication procedure is performed to check whether the specified code conversion has been performed, it is only necessary for the remodeler to understand the procedure. In addition, it is required to clarify the contents of the code conversion, and therefore, it is difficult to perform the modification so as not to be exposed. In principle, no response may be made when the code length is invalid, but since a dummy response with the same length as the fake “question” is returned,
In the present embodiment, a predetermined code length a
Can be prevented. Thus, in the present embodiment, the obstruction to the decryption work by the remodeler is
It also has effects such as disturbance.

(4) Subdivision of the substrate to be remodeled FIG. 12 shows the structure of a substrate according to an embodiment of the present invention. The substrate 400 according to this embodiment can be used as the board terminal plate 18 or the like as in the above-described embodiments.
It has a characteristic appearance in that it is not constituted by one substrate and various members attached thereto. That is, in the present embodiment, a plurality of substrates 404 divided into a vertically long shape are placed in a case 402 formed of a transparent resin (including a translucent resin; the same applies hereinafter).
And the gap 406 in the case 402 is filled with a transparent resin or the like, and the opening of the case 402 is closed with a lid 408 also formed of a transparent resin or the like.
The construction method is adopted. The case 402 and its lid 408 may be formed of, for example, a transparent acrylic resin, and the filling resin may be, for example, a transparent silicon resin. In the figure, 4
Reference numeral 10 denotes a mounting hole for fixing the substrate 400 to the pachinko machine 10 or the like. When attached to the pachinko machine 10 or the like, the lid 408 faces outward, and the bottom surface of the case 402 faces the pachinko machine 10 side. .

As shown in the figure, the posture of the vertically long board 404 to be incorporated into the case 402 is such that the board width direction coincides with the case depth direction. The depth of the case 402 is set so that the length of the vertically long substrate 404 is equal to or slightly larger than the width of the vertically long substrate 404. Opposite edges of the case 402 are provided with slits 412 corresponding to the respective vertical substrates 404. Each vertical substrate 404 is inserted and fixed in the corresponding slit 412. Therefore, the width and depth of the slit 412 are set so that the position of the vertically long substrate 404 can be fixed without noticeable rattling, and that the filling resin does not leak significantly before curing. The interval between the slits 412 is determined by the connector 414 belonging to a certain vertically long substrate 404,
The predetermined pitch is set so that the 416, the component 418, and the like do not conflict, compete, or electrically couple with the connectors 414, 416, the component 418, etc. belonging to the other vertically long board 404.

Since the case 402, the filling resin for the gap 406 and the lid 408 are transparent, the vertically long substrate 404 is incorporated and fixed in such a form / method. It is possible to visually observe the front and back surfaces of each of the vertically long substrates 404 through the. That is, the surface (usually a solder surface) which was difficult to visually check because it was mounted on the back side of the pachinko machine in the past, the deletion / addition / replacement of the component through the gap between the vertically long boards 404 and the like. In addition, the modification of the circuit wiring pattern can be easily checked visually or the like.

In the present embodiment, the connector for connection with the control board 14 and the management computer 20 is further provided as a plurality of connectors 414 and 416.
Circuit components to be mounted on the substrate 400 are also mounted on the substrate 400 as a plurality of components 418. Therefore, the type and number of signals transmitted via each vertically long board 404 are smaller than those of the “single board” board in the related art and some embodiments of the present invention. Therefore, it is possible to identify which signal has been subjected to an illegal operation only by inspecting which vertical substrate 404 has been modified. That is, the work of following the flow of the signal wiring pattern on the substrate at the time of inspection is reduced. In this regard, a design in which one vertical substrate 404 is assigned to one signal is preferable. Further, by providing a photocoupler or the like that regulates the signal direction as (part of) the component 418, the function of preventing remodeling and holding traces of remodeling can be enhanced.

Further, in the present embodiment, the caulking case conventionally used is unnecessary, and the sealing seal is not required. Therefore, the remodeler can no longer take any tricks such as clever opening of the caulking case, forgery or imitation of the sealing seal. The back of the case (the surface facing the pachinko machine 10 side)
In view of the fact that the remodeling from the point does not make sense, it can be said that the present embodiment provides a function of psychologically acting to give up the remodeling to the remodeler, in addition to a function such as remodeling obstruction.

If it is only necessary to enhance the function of retaining the trace of remodeling, the filling of the gap 406 with the transparent resin may be omitted, and the gap 406 may be filled with a transparent gas such as air. By doing so, it is possible to reduce material costs, reduce man-hours, relax dimensional accuracy of the slit 412, and the like. However, it is more effective that the gap 406 is at least partially filled with the resin in the sense that the modification is difficult. In addition, in order to discover that the resin has been replaced with a counterfeit or counterfeit product, there is room for discovery based on visual confirmation of the material of the resin and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a relationship between a pachinko machine and a management computer and a schematic configuration of each pachinko machine.

FIG. 2 is a view showing a structure of an embodiment provided with a connector cover which hinders cable removal and connector removal and which breaks or breaks a conduction path when the removal is forcibly performed, in particular, FIG. Is a cross-sectional view, (B) is a plan view in a state where a connector cover is removed, and (C) is a plan view showing a conduction path for inspection.

FIG. 3 is an exploded perspective view showing a covering structure with a transparent or translucent flexible substrate.

FIG. 4 is a diagram showing a circuit configuration of a board to be remodeled in an embodiment in which means for wirelessly transmitting identification information and a result of remodeling monitoring are provided on the board to be remodeled.

FIG. 5 is a block diagram showing functions of the inspection machine in the embodiment shown in the preceding figure.

FIG. 6 is a flowchart showing a question / response procedure in an embodiment for executing a response procedure involving code conversion.

FIG. 7 is a conceptual diagram showing an example of a response in the embodiment shown in the previous figure.

FIG. 8 is a conceptual diagram showing an example of code conversion in the embodiment shown in the preceding figure.

FIG. 9 is a partial cross-sectional view showing the structure of a substrate to be remodeled in the embodiment shown in the preceding figure.

FIG. 10 is a partial plan view showing the structure of a substrate to be remodeled in the embodiment shown in the preceding figure.

FIG. 11 is a circuit diagram showing a configuration of a plug missing detection circuit in the embodiment shown in the preceding figure.

FIG. 12 is an exploded perspective view showing a structure of an embodiment in which a remodeling target board on which a member for regulating a signal direction is mounted is subdivided, stored in a case, and the case is filled with a transparent resin.

[Description of Signs] 10 pachinko machines, 12 circuits / mechanisms, 14 control boards, 16 frame terminal boards, 18 terminal boards, 20 management computers, 100, 200, 300, 400, 4
04 board, 102,418 components, 104 component mounting surface, 106 spacer, 108 flexible substrate, 1
10, 124, 126, 128, 410 holes, 112, 1
14, 202, 320, 332, 414, 416 Connector, 116, 118, 120, 122 Notch, 1
30, 132, 208, 212, 334, 336 conductor / wiring, 134, 136 through hole, 138, 14
0, TP1, TP2 electrode, 204 cable end, 20
6 Connector cover, 206a T-shaped part, 206b opening, 210 fixing part, 322 sensor, 356, 3
58, 360, 362 display, 302, 367 inspection machine, 318, 328 cable, 304, 369 transponder, 306 switching circuit, 308 ID number setting circuit, 310 battery, 312 connector missing detection circuit,
314 Cable alteration detection circuit, 316 transmission direction detection circuit, 324, 330 plug, 326, 340, 34
8 flip-flop, 338 fuse, 342 interface circuit, 346 time counter, 350 logic circuit, 352 detector, 354 waveform shaping circuit, 364
Cover, 402 case, 406 gap, 408 lid,
412 slit.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG. 9

FIG.

FIG. 2

FIG. 3

FIG. 5

FIG. 4

FIG. 6

FIG. 10

FIG. 7

FIG. 8

FIG. 11

FIG.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kenichi Nakagawa 5-1-1 Shimorenjaku, Mitaka City, Tokyo Japan Radio Co., Ltd. (72) Kazuto Shinden 5-1-1 Shimorenjaku, Mitaka City, Tokyo Japan Inside Radio Co., Ltd. (72) Inventor Naoyuki Fujima 5-1-1 Shimorenjaku, Mitaka City, Tokyo Japan Inside Radio Co., Ltd. (72) Inventor Akira Nakaba 5-1-1 Shimorenjaku, Mitaka City, Tokyo Japan Radio Co., Ltd. (72) Inventor Masaru Ishikawa 5-1-1 Shimorenjaku, Mitaka-shi, Tokyo Japan Radio Co., Ltd. (72) Inventor Satoru Ikeno 5-1-1 Shimorenjaku, Mitaka-shi, Tokyo Japan Radio Co., Ltd. (72 ) Inventor Masami Arai 5-1-1 Shimorenjaku, Mitaka-shi, Tokyo Japan Radio Co., Ltd. F-term (reference) 2C088 BC45 DA17 DA21 DA23 EA02 EA10

Claims (2)

[Claims] 1. A substrate having components mounted thereon or a conductor pattern formed on the surface or inside thereof, comprising a trace holding member for holding a trace of remodeling or remodeling of the substrate (remodeling prevention structure). The substrate characterized by the above-mentioned. 2. A board provided with the function according to claim 1 on the premise that the external terminal boards for gaming machines which are different from one manufacturer to another are unified. A board and an inspection machine characterized by detecting unauthorized alteration by using the method.