JP5272358B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine capable of changing a winning probability.

As a technique for changing the winning probability of a gaming machine, there is one described in Patent Document 1 below.
This technology transmits a signal from the power unit of the gaming machine to the main board based on the operation of the setting key switch provided on the power supply unit, and the main board changes the winning probability in a state where the main board receives the signal. The operation (reset switch operation) can be accepted, and when a change operation (reset switch operation) is performed, a process of changing the winning probability is executed.
JP 2004-350808 A

  However, in the technique of the above publication, when a so-called Goto attaches an unauthorized harness on the signal line connecting the power supply unit and the main board and transmits an illegal signal toward the main board, the main board There is a risk that the signal is recognized as an appropriate signal and processing for changing the winning probability is executed. In other words, since the main board cannot determine whether the received signal is illegal or not, if the winning probability is changed by simply inputting the signal, it is possible to prevent fraud using the illegal harness. could not.

  Accordingly, an object of the present invention is to provide a gaming machine that can prevent an unauthorized change in the winning probability using an unauthorized harness.

A gaming machine according to claim 1, which has been made to solve the above-described problem, is a winning probability change switch 11 in which a changing operation for changing the winning probability is performed in the gaming machine 1 capable of changing a winning probability, and , An operating means 10 having a pre-operation switch 12 for performing a pre-operation before the changing operation, a winning probability changing means 29 for changing the winning probability by the changing operation, the operating means 10 and the winning probability changing means 29 a communication means 3 for communicably connecting the door, the pre operating the first confirmation signal α to confirm the prize probability changing means 2 9 that has been made, said operating means via the communication means 3 a first transmission means 19 to be transmitted to the winning probability changing means 29 and 10, a second confirmation signal β to check the operating unit 1 0 of the reception of the first acknowledgment signal alpha, before Second winning means 29 for transmitting from the winning probability changing means 29 to the operating means 10 via the communication means 3, wherein the winning probability changing means 29 includes the first transmitting means 19 and the second transmitting means. 29 , and after the operation means receives the second confirmation signal, the winning probability is changed according to the changing operation accepted by the winning probability change switch 11.

  In this gaming machine, the fact that a pre-operation has been performed is transmitted from the operating means to the winning probability changing means, and further, the fact that this transmission has not been transmitted from the winning probability changing means to the operating means, that is, a double If no transmission is made, the winning probability is not changed.

  Therefore, in this gaming machine, even if Goto attaches an illegal harness to the communication means and transmits an illegal signal for changing the winning probability, the above-mentioned double transmission is not performed, and the winning probability may be changed. As a result, it is possible to reliably prevent an unauthorized change in the winning probability by Goto.

Next, as described in claim 2, the first transmission unit 19 transmits the first confirmation signal α to the winning probability changing unit 29 from the operation unit 10 for a certain period when the preliminary operation is performed in the preliminary operation switch 12. When the second transmission means 29 starts receiving the first confirmation signal α , the second confirmation signal β is transmitted from the winning probability changing means 29 to the operating means 10 for a certain period of time, and the winning probability changing means 29 Only when the first confirmation signal α and the second confirmation signal β are transmitted by the transmission means 19 and the second transmission means 29, the winning probability is changed according to the changing operation accepted by the winning probability change switch 11. Also good.

  In this way, it becomes possible to change the winning probability only while the transmission by the first transmitting means and the second transmitting means is continuously performed. It can be surely prevented.

Next, as described in claim 3, the winning probability changing means 29 is configured such that the operation means 10 is the second after the first transmission means 19 starts transmitting the first confirmation signal α until a certain period elapses . The winning probability may be changed only when reception of the confirmation signal β is started.

In this way, since the winning probability is not changed unless the operation means starts receiving the second confirmation signal β until a certain period of time has elapsed since the transmission of the first confirmation signal α is started, the winning prize by Goto, etc. An unauthorized change in probability can be prevented more reliably.

In addition, as described in claim 4 , in the gaming machine 1 according to any one of claims 1 to 3, when transmission is performed only in either the first transmission unit 19 or the second transmission unit 29. An alarm means 13 for alarming may be provided.

  The fraud by Goto is performed by connecting an unauthorized harness to a harness (corresponding to the communication means of the present invention). When such an unauthorized connection is made, apparently, the first transmission means 19 or the second transmission is performed. It is as if any of the means 29 has been transmitted. For this reason, according to claims 4 and 5, since a warning is given when such an illegal act by Goto teacher is performed, an illegal act can be detected quickly, and as a result, the probability of winning by Goto teacher etc. Unauthorized changes can be reliably prevented.

Further, in order to more surely prevent an unauthorized change in the winning probability, as described in claim 6 , when only one of the first transmitting means 19 and the second transmitting means 29 is transmitted, You may provide the power supply means 14 which stops supply of the electric power to the probability change means 29. FIG. In this way, the change in the winning probability is surely disabled, so that an illegal change in the winning probability by Goto and the like can be prevented more reliably.

Next, as described in claim 5 , when the winning probability changing switch 11 accepts the changing operation, the operating means 10 transmits the setting change signal γ composed of a number of pulse signals indicating the winning probability. The winning probability changing means 29 may change the winning probability to the winning probability indicated by the pulse signal when receiving the setting change signal γ.

In this way, since the winning probability cannot be changed unless the relationship between the number of pulses and the winning probability is known, it is possible to reliably prevent an illegal change in the winning probability by Goto.
As described in claim 7 , the operation means 10 may be provided with a power supply means 14. Further, the winning probability change switch 11 and the pre-operation receiving means that constitute the operating means 10 are not necessarily integrated, and may be provided separately.

Further, as described in claim 8 , the winning probability changing means may be provided on the main board for executing the big hit lottery in the gaming machine, or if the gaming machine law permits, It may be provided in another device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A spinning cylinder gaming machine (hereinafter referred to as “slot machine”) that is an embodiment to which the present invention is applied will be described below with reference to the drawings.
[1 Overall configuration]
Here, FIG. 1 is a block diagram showing an internal configuration of the slot machine 1.

  The slot machine 1 of the present embodiment includes three reels (not shown), a start lever for starting rotation of these reels, a stop button (not shown) for instructing stop of rotation of the reels, and other lamps for illumination. Machine.

  As shown in FIG. 1, the slot machine 1 mainly includes a power supply unit 10 (corresponding to the operating means of the present invention), a main board 20, and a production board 30 in a casing (not shown) of the slot machine 1. I have.

  The power supply unit 10 includes a setting change switch 11 (corresponding to a win probability changing switch of the present invention) that receives a changing operation for changing the winning probability of the slot machine 1 of the present embodiment, and a preliminary operation before the changing operation. Is provided with a setting key switch 12 (corresponding to the prior operation switch of the present invention). The setting change switch 11 and the setting key switch 12 are installed in the casing of the slot machine 1 that cannot be unlocked and opened unless the employee of the hall or the like. The setting change switch 11 is configured to be operable in six steps. When the switch is operated in each step, the winning probability corresponding to each step can be instructed. The winning probability means the frequency at which winning is generated in the gaming machine 1. This winning probability is recognized as a so-called jackpot probability in the gaming machine, and specifically, is set so as to be changeable in six stages within a range of 1/240 to 1/300.

  Further, the power supply unit 10 includes a speaker 13 for transmitting alarm sounds and other sounds, and adjusts the electric power taken from the outside to a voltage for operating the slot machine 1 and the like, and the slot machines such as the main board 20 and the effect board 30 1 is provided with a power supply device 14 (corresponding to the power supply means of the present invention) for supplying each device constituting 1.

  Furthermore, the power supply unit 10 includes a computer 19 that executes a power supply unit process 100 described later. The computer 19 includes a CPU, a ROM, a RAM, and the like, and is connected to the setting change switch 11, the setting key switch 12, the speaker 13, and the power supply unit 14 described above. The process is executed in cooperation with 11-14.

The main board 20 includes a computer 29, and the computer 29 executes main board processing 200 described later.
In addition, the start lever 21 and others described above are connected to the main board 20, and the computer 29 executes a lottery process for drawing a big hit in accordance with the operation of the start lever 21.

The effect board 30 includes a computer 39 that performs a process of executing an effect based on a lottery result and the like. The computer 39 turns on the effect lamp 31 connected to the effect board 30 based on the result of the lottery process performed on the main board 20, or the reel 39 according to the timing of pressing a stop button (not shown). Processing for effects such as stopping rotation is executed.
[2 Regarding presence / absence of change in signal to be communicated and winning probability / whether power is supplied]
Next, signals communicated between the power supply unit 10 and the main board 20 constituting the slot machine 1 described above, presence / absence of a change in winning probability, and presence / absence of power supply will be described.

  Here, FIG. 2 is a schematic diagram schematically illustrating a configuration for changing the winning probability. FIG. 3 is a schematic diagram of signals communicated between the power supply unit 10 and the main board 20 when the winning probability is changed. FIG. 4 is a table that describes the relationship between the signals communicated between the power supply unit 10 and the main board 20 and the effectiveness of changing the winning probability or the presence or absence of power supply.

In the slot machine 1 of the present embodiment, as shown in FIG. 2, when the setting key switch 12 is pressed (corresponding to the above-described preliminary operation), the setting key ON signal α (corresponding to the first confirmation signal α of the present invention) . Is transmitted from the power supply unit 10 to the main board 20 via the communication harness 3. When receiving the setting key ON signal α, the main board 20 sends a setting key confirmation signal β (corresponding to the second confirmation signal β of the present invention) from the main board 20 to the power supply unit 10 via the communication harness 3. Send back.

  As shown in FIG. 3A, the setting key ON signal α communicated at this time is a signal in which a constant voltage is continuously transmitted until a predetermined time T1 elapses after the setting key switch 12 is pressed. is there. As shown in FIG. 3B, the setting key confirmation signal β is delayed by a predetermined time t from the transmission timing of the setting key ON signal α after the main board 20 receives the setting key ON signal α. Until a predetermined time T2 elapses, a constant voltage is transmitted continuously.

  Next, as described above, the setting change switch 11 of the slot machine 1 according to the present embodiment is configured to be capable of six stages of operation. As shown in FIG. A setting change signal γ corresponding to each stage is transmitted from the power supply unit 10 to the main board 20 via the communication harness 3.

  The setting change signal γ communicated at this time is a pulse signal indicating each stage of the setting change switch 11 as shown in FIG. 3, and when set to stage 1, as shown in FIG. A setting change signal γ consisting of one pulse signal is transmitted. Then, when set to stage 2, as shown in FIG. 3 (d), a setting change signal γ composed of two pulse signals is transmitted, and when set to stage 6, as shown in FIG. 3 (e). In addition, a setting change signal γ comprising six pulse signals is transmitted, and a setting change signal γ comprising a number of pulse signals corresponding to the number of stages is transmitted. In the main board 20, the winning probability is changed based on the pulse signal which is the setting change signal γ. The winning probability is stored in a RAM or the like that constitutes the computer 29, and the lottery process described above is executed based on the winning probability.

  Next, the presence / absence of a change in the winning probability in the slot machine 1 in which such communication is performed and the presence / absence of supply of power from the power supply unit 10 to the main board 20 will be described with reference to FIG.

  Regarding the change of the winning probability, when the setting key ON signal α and the setting key confirmation signal β are communicated (in the table of FIG. 4, “ON” is communicated and “OFF” is not communicated). 4) is executed when the setting change signal γ is transmitted to the main board 20 (in the table of FIG. 4, the change of the winning probability is “valid” and the case where it is not performed is “invalid”). . On the other hand, when only one of the setting key ON signal α and the setting key confirmation signal β is communicated, the winning probability is not changed. Further, even when both these signals are not communicated, the winning probability is not changed.

Whether or not power is supplied is determined by the power supply unit 14 of the power supply unit 10 when the setting key ON signal α and the setting key confirmation signal β are communicated or when these signals are not communicated. Power is supplied to the substrate 20 (in the table of FIG. 4, “supply” indicates that power is supplied and “stop supply” indicates that power is not supplied). On the other hand, when only one of the signals is communicated, the power supply is stopped.
[3 Power supply unit processing]
Next, various processes for executing the various signals described above, changing the winning probability, and supplying power will be described below.

First, power supply unit processing executed by the computer 19 of the power supply unit 10 will be described.
Here, FIG. 5 is a flowchart of the power supply unit process. Unless otherwise indicated in the document below, the step numbers from the smallest to the largest are executed in order.

This power supply unit process 100 is a process executed during operation of the slot machine 1 of the present embodiment.
In the power supply unit processing 100, first, it is determined whether or not the setting key confirmation signal β is received (S101). Such a determination is made because there is a possibility that an unauthorized setting key confirmation signal β may be received when Goto and the like attach an unauthorized harness to the communication harness 3. This determination corresponds to the case where the setting key ON signal α in the table of FIG. 4 is OFF and the setting key confirmation signal β is ON. If it is determined in this determination that the setting key confirmation signal β has been received (S101: YES), the process of S150 is executed, and if it is determined that the setting key confirmation signal β has not been received (S101: NO), the process of S103 is executed.

  In S103, it is determined whether or not the setting key switch 12 has been pressed. If it is determined in this determination that the setting key switch 12 has been pressed (S103: YES), in the processing of S105, processing for transmitting the setting key ON signal α is started. On the other hand, if it is determined in this determination (S103) that the setting key switch 12 has not been pressed (S103: NO), the processing of S101 is executed again. Note that the negative determination in S103 (S103: NO) corresponds to the case where the setting key ON signal α in the table of FIG. 4 is OFF and the setting key confirmation signal β is OFF.

  When the process of transmitting the setting key ON signal α to the main board 20 is executed (S105), the setting key confirmation signal β is transmitted from the main board 20 to the power supply unit 10 as described above. Therefore, after this S105, the timing when the power supply unit 10 starts receiving the setting key confirmation signal β (see FIG. 2) has elapsed “t1” seconds after the transmission of the setting key ON signal α starts. A process for determining whether or not it is present is executed (S107). In the present embodiment, as described above, when the main board 20 receives the setting key ON signal α, the setting key ON signal α is transmitted from the main board 20 with a delay of t seconds from the timing of transmission from the power supply unit 10. (See FIG. 3), the power supply unit 10 starts receiving the setting key confirmation signal β (see FIG. 2) in S107, whether or not the setting key confirmation signal β is transmitted from the main board 20 with this delay. It is determined whether or not “t1” seconds have elapsed since the start of transmission of the setting key ON signal α. This determination is made if the fraud has not been performed. Normally, the setting key confirmation signal β (see FIG. 2) is sent within “t1” seconds after the transmission of the setting key ON signal α is started. However, if an unauthorized connection is made with an unauthorized harness, the timing may be longer than that of the unauthorized harness, so the determination is made as in S107. . In this determination, if the setting key confirmation signal β is received within “t1” seconds (S107: YES), the process of S109 is executed. If not received (S107: NO), the process of S150 is performed. Execute. If the determination in S107 is negative (S107: NO), this corresponds to the case where the setting key ON signal α in the table of FIG. 4 is ON and the setting key confirmation signal β is OFF. The case (S107: YES) corresponds to the case where the setting key ON signal α in the table of FIG. 4 is ON and the setting key confirmation signal β is ON.

  In S109, it is determined whether or not the setting key ON signal α is being transmitted. That is, it is determined whether t1 seconds have elapsed since the transmission of the setting key ON signal α is started. If it is determined that the setting key ON signal α is being transmitted (S109: YES), the process of S111 is executed. If it is determined that the setting key ON signal α is not being transmitted (S109: NO), the process of S101 is performed. Executed.

  In S111, it is determined whether the setting key confirmation signal β is being received. That is, it is determined whether t2 seconds have elapsed after the main board 20 starts transmitting the setting key confirmation signal β. If it is determined in this determination that the setting key confirmation signal β is being transmitted (S111: YES), the process of S113 is executed. If it is determined that the setting key confirmation signal β is not being transmitted (S111: NO), the process of S101 is performed. Executed.

  In S113, it is determined whether or not the setting change switch 11 has been operated. Specifically, it is determined whether or not the setting change switch 11 has been operated to change the stage. If it is determined that the operation is not performed (S113: NO), the process of S109 is executed again. If it is determined that the operation is performed (S113: YES), the process of S115 is executed.

In S115, a process of transmitting a setting change signal γ composed of a number of pulse signals corresponding to the stage of the change operation destination of the setting change switch 11 operated in S113 is executed.
When the processing from S109 to S115 is executed, as shown in FIG. 4, within T1 seconds after the transmission of the setting key ON signal α is started, and for T2 seconds after the transmission of the setting key confirmation signal β is started. The process of S115 can be executed only when it is within. That is, in the present embodiment, the setting change signal γ is transmitted within t1 seconds after the transmission of the setting key ON signal α is started and within t2 seconds after the transmission of the setting key confirmation signal β is started. The winning probability can be changed only when it is made.

Then, when the process of S115 is executed, the process of S101 is executed again.
The process of S150 is performed when it is determined in S101 and S107 that fraud has been performed (S101: YES: when the setting key switch 12 is not operated but the setting key confirmation signal β is transmitted), and S107. : NO: The setting key confirmation signal β is not received within t1 seconds). In S <b> 150, processing for stopping the supply of power from the power supply unit 14 to the main board 20 and the effect board 30 is performed on the power supply unit 14.

In S152, processing for transmitting an alarm sound from the speaker 13 is executed.
When the processes from S150 to S152 are executed, if an illegal act is performed, the supply of power to the main board 20 is stopped, and the change of the winning probability is completely prevented, and the illegal act is performed. Since an alarm is given at the moment, it is possible to detect fraud early, and it is also possible to exert an effect of suppressing fraud by giving this warning.

And if these processes (S152) are performed, the process of S101 will be performed again.
[4 Main board processing]
Next, main substrate processing executed by the computer 29 of the main substrate 20 of this embodiment will be described.

Here, FIG. 6 is a flowchart of main substrate processing. Unless otherwise indicated in the document below, the step numbers from the smallest to the largest are executed in order.
The main board process 200 is a process executed during operation of the slot machine 1 of the present embodiment.

  In the main substrate processing 200, first, it is determined whether or not the setting key ON signal α has been received (S201), and waits until it is received (S201: NO). And if it receives (S201: YES), the process of S203 will be performed next.

In S203, processing for starting transmission of the setting key confirmation signal β is executed.
In S205, it is determined whether the setting key confirmation signal β is being transmitted. That is, it is determined whether T2 seconds have elapsed since the transmission of the setting key confirmation signal β was started. If it is determined in this determination that the setting key confirmation signal β is being transmitted (S205: YES), the process of S207 is executed. If it is determined that the setting key confirmation signal β is not being transmitted (S205: NO), the process of S201 is performed. Executed.

  In S207, it is determined whether the setting key ON signal α is being received. That is, it is determined whether T1 seconds have elapsed since the power supply unit 10 started transmitting the setting key ON signal α. If it is determined that the setting key ON signal α is being transmitted (S207: YES), the process of S209 is executed. If it is determined that the setting key ON signal α is not being transmitted (S207: NO), the process of S201 is performed. Executed.

  In S209, it is determined whether or not the setting change signal γ has been received. If it is determined that it has not been received (S207: NO), the process of S205 is executed again. If it is determined that it has been received (S207: YES), the process of S211 is executed.

  Here, when the processing from S205 to S209 is executed, as shown in FIG. 3, within T1 seconds after the transmission of the setting key ON signal α is started and after the transmission of the setting key confirmation signal β is started. Since the setting change signal γ is received only when it is within T2 seconds, the winning probability is changed only in such a case.

In S211, a process of changing the winning probability is executed based on the received setting change signal γ, and S201 is executed again.
[5 Characteristic effects of this embodiment]
In the slot machine 1 of the present embodiment, the operation of the setting key switch 12 is transmitted from the power supply unit 10 to the main board 20, and further, this transmission is transmitted from the main board 20 to the power supply unit 10. If it is not performed, that is, if double transmission is not performed, the winning probability is not changed. In addition, the winning probability is changed only when the setting key ON signal α and the setting key confirmation signal β used for the transmission are transmitted.

  Accordingly, in this slot machine 1, even if Goto attaches an unauthorized harness to the communication harness 3 and transmits an unauthorized signal for changing the winning probability, the above-described double transmission is not performed and the winning probability is changed. Therefore, it is possible to reliably prevent an illegal change in the winning probability by Goto.

  Further, in the slot machine 1 of the present embodiment, the setting key confirmation signal β is transmitted without the setting key ON signal α being transmitted from the power supply unit 10 by, for example, illegally transmitting the setting key ON signal α to the main board 20. Or when the setting key ON signal α is transmitted, the setting key confirmation signal β is not received within t1 seconds. The power supply is stopped.

  In this way, it is possible to quickly find a fraudulent act, to suppress the fraudulent act, and to more reliably prevent an illegal change of the winning probability by Goto.

Furthermore, in the slot machine 1 of the present embodiment, the winning probability is changed based on the pulse signal. Therefore, in the slot machine 1 according to the present embodiment, the winning probability cannot be changed unless the relationship between the number of pulses and the winning probability is known, so that it is possible to reliably prevent an illegal change in the winning probability by Goto.
[6 Other embodiments]
In the above embodiment, the alarm is executed by the power supply unit 10, but a signal indicating that an alarm is issued is transmitted to the main board 20, a payout board (not shown), and the effect board 30, and the alarm is issued by these boards. You may do it. In addition to transmitting an alarm sound, the content of the alarm may display an alarm message, transmit an alarm sound, or blink a lamp. Further, the fact that an alarm has been issued may be stored in a memory (not shown) as a history.

  Further, one of the setting key ON signal α and the setting change signal γ may be input to the main board 20 via another board. By doing so, it takes time and risk to carry out fraud, which is preventive.

  Further, in the present embodiment, using the setting key ON signal α and the setting key confirmation signal β that continue for a certain period of time, when the main board 20 receives the setting change signal γ until the transmission of these signals stops, a prize is received. The probability is changed, but the setting key ON signal α and the setting key confirmation signal β are set as a single pulse signal, and the setting change signal is received until a certain time elapses after receiving this pulse signal. When γ is received, the winning probability may be changed.

  In this way, since the winning probability is not changed unless the power supply unit 10 starts receiving the setting key confirmation signal β after a certain period of time has elapsed since the transmission of the setting key ON signal α is started, An illegal change in the winning probability can be prevented more reliably.

  In the above embodiment, the setting change switch 11 and the setting key switch 12 are provided in the power supply unit 10. However, these switches 11 and 12 are provided in a place other than the power supply unit 10. Alternatively, it may be shared with other switches (for example, a switch for stopping the reel).

  Further, the present invention is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims.

4 is a block diagram showing an internal configuration of the slot machine 1 of the present embodiment. FIG. It is the schematic diagram which described typically the structure which changes a winning probability. It is a schematic diagram of the signal communicated between the power supply unit 10 and the main board | substrate 20 when a winning probability is changed. It is the table | surface which described the relationship between the signal communicated between the power supply unit 10 and the main board | substrate 20, the effectiveness of a change of a winning probability, or the presence or absence of power supply. It is a flowchart of a power supply unit process. It is a flowchart of a main board | substrate process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Slot machine, 3 ... Communication harness, 10 ... Power supply unit, 11 ... Setting change switch, 12 ... Setting key switch, 13 ... Speaker, 14 ... Power supply device, 19 ... Computer, 20 ... Main board, 21 ... Start lever , 29 ... Computer, 30 ... Production board, 31 ... Lamp, 39 ... Computer

Claims (8)

In the gaming machine 1 that can change the winning probability,
An operation means 10 comprising a winning probability change switch 11 for performing a changing operation for changing the winning probability, and a pre-operating switch 12 for performing a pre-operation before the changing operation;
Winning probability changing means 29 for changing the winning probability by the changing operation;
Communication means 3 for connecting the operation means 10 and the winning probability changing means 29 in a communicable manner;
The transmitting said pre-operation is performed a first confirmation signal α to confirm the winning probability changing unit 2 9, to the winning probability changing unit 29 from the operation unit 10 via the communication means 3 1 transmission means 19;
The sending of the reception of the first acknowledgment signal α a second confirmation signal β to confirm the operation means 1 0, the operating means 10 from the winning probability changing unit 29 via the communication means 3 2 transmission means 29;
With
The winning probability changing means 29 includes:
After the transmission by the first transmission unit 19 and the second transmission unit 29 is performed and the operation unit receives the second confirmation signal, the winning operation is performed according to the change operation received by the winning probability change switch 11. A gaming machine 1 characterized by changing a probability. In the gaming machine 1 according to claim 1,
When the preliminary operation is performed in the preliminary operation switch 12, the first transmission unit 19 transmits the first confirmation signal α from the operation unit 10 to the winning probability changing unit 29 for a certain period of time.
When receiving the first confirmation signal α, the second transmission unit 29 transmits the second confirmation signal β from the winning probability changing unit 29 to the operation unit 10 for a certain period of time.
The winning probability changing means 29 includes:
Only while the first confirmation signal α and the second confirmation signal β are transmitted by the first transmission means 19 and the second transmission means 29, according to the change operation accepted by the winning probability change switch 11. A gaming machine 1 that changes the winning probability. In the gaming machine 1 according to claim 2,
The winning probability changing means 29 includes:
The winning probability only when the operation means 10 starts receiving the second confirmation signal β after the first transmission means 19 starts transmitting the first confirmation signal α until a certain period of time elapses. A gaming machine 1 that is characterized by changing. In the gaming machine 1 according to any one of claims 1 to 3,
A gaming machine 1 comprising alarm means 13 for warning when transmission is performed only in one of the first transmission means 19 and the second transmission means 29. In the gaming machine 1 according to any one of claims 1 to 4 ,
The operation means 10 includes a transmission means 19 for transmitting a setting change signal γ composed of a number of pulse signals indicating the winning probability when the winning probability changing switch 11 accepts the changing operation,
When the winning probability changing means 29 receives the setting change signal γ, the winning probability changing means 29 changes the winning probability to the winning probability indicated by the pulse signal. In the gaming machine 1 according to any one of claims 1 to 5 ,
And a power supply means 14 for stopping the supply of power to the winning probability changing means 29 when transmission is performed only in one of the first transmission means 19 and the second transmission means 29. A gaming machine 1 to play. In the gaming machine 1 according to claim 6 ,
The gaming machine 1 is characterized in that the operation means 10 includes the power supply means 14. In the gaming machine 1 according to any one of claims 1 to 7 ,
The gaming machine 1 is characterized in that the winning probability changing means 29 is provided on a main board 20 that executes a jackpot lottery in the gaming machine 1.

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