JP4297742B2 - Tamper detection device for gaming machines - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tampering detection device for a gaming machine that detects that tampering has been performed when tampering is attempted to take out a game ball from a pachinko gaming machine.
[0002]
[Prior art]
Conventionally, for example, Japanese Patent Laid-Open No. 2001-715 (Patent Document 1) has proposed a “security system capable of detecting unauthorized modification of gaming machines”.
This conventional example is a system that measures the time from winning detection of the entire winning circuit to winning passing, determines that it is abnormal, and determines circuit fraud. More specifically, the input control means determines whether the input signal to the external terminal is a time Ta from winning detection including a noise signal to winning detection after removing the noise, from winning passing including the noise signal to winning passing after removing the noise. Time Tb, time Tc from winning detection after noise removal to winning passing including noise signal and / or time Td from winning detection after noise removing to winning passing after noise removal are measured, and measured time Ta, Comparison between Tb, Tc and / or Td and the upper limit and lower limit data of the time from winning detection to winning passing stored in the user ROM is performed, and the measurement time Ta, Tb, Tc and / or Td is the upper limit / lower limit data. If it is within the range, it is judged as a regular prize, and if it is outside the upper limit / lower limit range, it is judged as not a regular prize.
[0003]
[Patent Document 1]
JP 2001-715 A (FIG. 1, claim 1)
[0004]
[Problems to be solved by the invention]
Therefore, the present invention detects when an unauthorized modification part such as an unauthorized harness, an unauthorized substrate, an unauthorized sensor, etc., which attempts to illegally take out a game ball from a pachinko gaming machine is applied. The object is to provide a tamper detection device for gaming machines.
[0005]
[Means for Solving the Problems]
The present invention is connected to a main board constituting a pachinko gaming machine, and when a power source of the pachinko gaming machine is turned on, a start sensor that outputs a sensor voltage rising from zero;
The signal input / output unit to which the signal line from the start sensor is disconnected and connected from the main board constituting the pachinko gaming machine,
Output power to the start sensor via the signal input / output unit, and a power output circuit that passes the internal circuit of the start sensor itself,
The A / D conversion circuit for measuring a return voltage returned from the internal circuit of the start sensor itself via the signal input / output unit;
When the return voltage measured by the A / D converter circuit is within a predetermined voltage range, it is determined to be normal, and when the return voltage is outside the predetermined voltage range, a second illegally modified component is applied to the internal circuit of the start sensor itself that is abnormal. The control circuit which determines that the output is performed and outputs the abnormality display signal;
A display circuit for displaying the abnormality by inputting the abnormality display signal;
A tamper detection device for gaming machines, comprising: a power supply circuit that supplies power to the components.
[0006]
[0007]
[0008]
According to the reference example of the present invention , as shown in FIGS. 1 and 2, the start sensor 1 connected to the main board 12 constituting the pachinko gaming machine via the signal input unit 13 is a power source of the pachinko gaming machine. When is turned on, a sensor voltage S1 that rises from zero to, for example, about 6V is output as shown in FIG. The signal input / output unit 2 receives the sensor voltage S1. The signal short circuit 3 is a circuit that is opened after the sensor voltage 1 is inputted and temporarily short-circuited as shown in FIG. The A / D conversion circuit 5 receives the voltage S2 that is short-circuited and inputs the maximum voltage of the voltage S2 that is short-circuited and repeats the measurement a predetermined number of times. In FIG. 5, the short-circuited voltage S2 with a solid line is a normal voltage, and the short-circuited voltage S2 with a broken line is abnormal, that is, the first illegally modified component is applied in the circuit through which the sensor voltage S1 passes. Indicates the state.
The control circuit 6 receives the maximum voltage S3 measured repeatedly a predetermined number of times, the average voltage of the maximum voltage S3 measured repeatedly the predetermined number of times is equal to or higher than the predetermined voltage, and the maximum voltage S3 measured repeatedly the predetermined number of times. When the voltage width is less than the predetermined width, it is determined as normal. Further, the control circuit 6 is abnormal when the average voltage of the maximum voltage measured repeatedly a predetermined number of times is less than the predetermined voltage or when the voltage width of the maximum voltage measured repeatedly the predetermined number of times is equal to or greater than the predetermined width, that is, It is determined that the first illegally modified part is applied in the circuit through which the sensor voltage S1 passes, and the abnormality display signal S4 is output. The display circuit 9 displays the abnormality by receiving the abnormality display signal S4. The power supply circuit 11 includes a battery 10 and supplies power to the components.
[0009]
According to the present invention , as shown in FIGS. 1 and 3, the signal input / output unit 2 is connected to the signal input unit 13 of the main board 12 in which the signal lines 14 and 15 from the start sensor 1 constitute a pachinko gaming machine. Unplugged and connected. The power output circuit 4 outputs output power S5 to the start sensor 1 via the signal input / output unit 2 and passes the internal circuit of the start sensor 1 itself. The A / D conversion circuit 5 measures the return voltage S6 returned from the internal circuit of the start sensor 1 itself via the signal input / output unit 2. The control circuit 6 determines that the return voltage S6 measured by the A / D conversion circuit 5 is normal when the return voltage S6 is within the predetermined voltage range, and abnormal when the return voltage S6 is outside the predetermined voltage range, that is, the second circuit is connected to the internal circuit of the start sensor 1 itself. It is determined that unauthorized modification parts have been applied, and an abnormality display signal S7 is output. The display circuit 9 displays the abnormality by receiving the abnormality display signal S7.
[0010]
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on examples thereof with reference to the drawings.
First, a reference example of the present invention using a short circuit measurement method will be described.
As shown in FIGS. 1 and 2, first, the start switch 7 is turned on.
Next, the start sensor 1 connected to the main board 12 constituting the pachinko gaming machine via the signal input unit 13 starts from zero as shown in FIG. 4 when the power of the pachinko gaming machine is turned on. The sensor voltage S1 rising to about 6V is output. The signal input / output unit 2 receives the sensor voltage S1. The signal short circuit 3 is a circuit that is opened after the sensor voltage 1 is inputted and temporarily short-circuited as shown in FIG. The A / D conversion circuit 5 receives the voltage S2 that is short-circuited and inputs the maximum voltage of the voltage S2 that is short-circuited and repeats the measurement a predetermined number of times. In FIG. 5, the short-circuited voltage S2 with a solid line is a normal voltage, and the short-circuited voltage S2 with a broken line is abnormal, that is, the first illegally modified component is applied in the circuit through which the sensor voltage S1 passes. Indicates the state. The control circuit 6 receives the maximum voltage S3 measured repeatedly a predetermined number of times, and the average voltage of the maximum voltage S3 measured repeatedly the predetermined number of times is a predetermined voltage, for example, 9V or more, and is repeatedly measured a predetermined number of times. When the voltage width of the maximum voltage S3 is a predetermined width, for example, less than 250 μs, it is determined as normal.
Further, the control circuit 6 is abnormal when the average voltage of the maximum voltage measured repeatedly a predetermined number of times is less than the predetermined voltage or when the voltage width of the maximum voltage measured repeatedly the predetermined number of times is equal to or greater than the predetermined width, that is, It is determined that the first illegally modified part is applied in the circuit through which the sensor voltage S1 passes, and the abnormality display signal S4 is output.
The display circuit 9 displays the abnormality by receiving the abnormality display signal S4.
The power supply circuit 11 includes a battery 10 and supplies power to the components.
[0012]
Next, an embodiment of the present invention using a voltage measurement method will be described. The mode switching from the reference example of the present invention of the short-circuit measurement method is performed by the mode switch 8.
As shown in FIGS. 1 and 3, the signal input / output unit 2 is connected by disconnecting the signal lines 14 and 15 from the start sensor 1 from the signal input unit 13 of the main board 12 constituting the pachinko gaming machine. The power output circuit 4 outputs, for example, 3.0 V output power S5 to the start sensor 1 via the signal input / output unit 2, and passes the internal circuit of the start sensor 1 itself. The A / D conversion circuit 5 measures the return voltage S6 returned from the internal circuit of the start sensor 1 itself via the signal input / output unit 2. The control circuit 6 determines that the return voltage S6 measured by the A / D conversion circuit 5 is normal when the return voltage S6 is within a predetermined voltage range, for example, 1.0 V to 2.0 V. It is determined that the second unauthorized modification part is applied to the internal circuit of the sensor 1 itself, and an abnormality display signal S7 is output. The display circuit 9 displays the abnormality by receiving the abnormality display signal S7. As shown in FIG. 1, the power supply circuit 11 includes a battery 10 and is housed in a small case (not shown) as a whole so that it can be carried and is easy to use.
【The invention's effect】
As described above, in the present invention, when an unauthorized modification part such as an unauthorized harness, an unauthorized substrate, an unauthorized sensor, or the like for illegally taking out a game ball from a pachinko gaming machine is applied, the unauthorized modification part is applied. There is an effect that it can be detected.
[Brief description of the drawings]
FIG. 1 is an overall circuit configuration diagram of an embodiment of the present invention and a reference example .
FIG. 2 is a partial circuit configuration diagram of a reference example of the present invention.
FIG. 3 is a partial circuit configuration diagram of an embodiment of the present invention.
FIG. 4 is a voltage waveform diagram of a reference example of the present invention.
FIG. 5 is a voltage waveform diagram of a reference example of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Start sensor 2 Signal input / output part 3 Signal short circuit 4 Voltage output circuit 5 A / D conversion circuit 6 Control circuit 9 Display circuit 10 Battery 11 Power supply circuit 12 Main board 14 which comprises pachinko game machine Signal line S1 Sensor voltage S2 Short-circuit open voltage S3 Maximum voltage S4 and S7 repeatedly measured a predetermined number of times Abnormal display signal S5 Output voltage S6 Return voltage

Claims (1)

A start sensor that is connected to a main board constituting a pachinko gaming machine and outputs a sensor voltage rising from zero when the power of the pachinko gaming machine is turned on;
The signal input / output unit to which the signal line from the start sensor is disconnected and connected from the main board constituting the pachinko gaming machine,
Output power to the start sensor via the signal input / output unit, and a power output circuit that passes the internal circuit of the start sensor itself,
The A / D conversion circuit for measuring a return voltage returned from the internal circuit of the start sensor itself via the signal input / output unit;
When the return voltage measured by the A / D converter circuit is within a predetermined voltage range, it is determined to be normal, and when the return voltage is outside the predetermined voltage range, a second illegally modified component is applied to the internal circuit of the start sensor itself that is abnormal. The control circuit which determines that the output is performed and outputs the abnormality display signal;
A display circuit for displaying the abnormality by inputting the abnormality display signal;
A tamper detection device for gaming machines, comprising: a power supply circuit for supplying power to the components.

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