JP5743603B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine that determines whether or not a symbol variation game is a big hit based on a big hit determination random number.

  Conventionally, pachinko machines, which are a type of gaming machine, have been provided with a fraudulent board (also referred to as a hanging board) in the machine, and fraudulent acts are sometimes performed. Specifically, a means for performing the same function as the means for updating the jackpot determination random number provided in the pachinko machine is provided in the illegal substrate. Then, the unauthorized board forcibly resets the pachinko machine, and the jackpot determination value (more specifically, the jackpot determination random number coincides with the jackpot determination value from the reset timing (the timing when the incorrect reset signal is output)). The time at which the jackpot was generated was grasped by specifying the time it took to complete). Then, the illegal board generates a winning signal in accordance with the specified jackpot occurrence timing, and outputs the winning signal to the main CPU of the main control board, thereby generating the jackpot illegally. As a result, at the game store, a big hit is given to a player who has performed an illegal act, and there is a possibility that a disadvantage may be obtained.

  Therefore, as a countermeasure against such illegal acts, a pachinko machine has been proposed in which it is difficult to grasp the timing of occurrence of a big hit (see, for example, Patent Document 1). The pachinko machine described in Patent Document 1 generates a jackpot determination random number by adding a software random number value to a hardware random number value. As a result, it is possible to make it difficult to specify the big hit determination value, and to prevent illegal big hits from being generated. When generating the big hit determination random number using only the software random number value, the data bus or the address bus may be analyzed, and the hit determination random number may be predicted from the gaming state or the like. For this reason, fraud was prevented by using a plurality of types of random values.

JP 2003-126333 A

  However, the hardware random number value of Patent Document 1 is externally attached (externally input) to the CPU, and there is a possibility that the IC that generates and outputs the hardware random value input from the outside may be illegally replaced. there were. As a result, the hardware random number to be added is illegally generated, and the jackpot determination random number may be generated in the state of substantially only the software random value. In other words, there is a possibility that the hardware random number value to be added is manipulated to read the software random number value and illegally predict the jackpot determination random number (and the jackpot determination value).

  The present invention has been made paying attention to such problems existing in the prior art. The purpose is to provide a gaming machine that prevents the occurrence of an illegal jackpot.

In order to achieve the above object, the invention according to claim 1 includes a main control board that executes a big hit determination process for determining whether or not a big hit is triggered when a game ball is detected by the starting means. In a gaming machine in which a symbol variation game that varies a plurality of types of symbols based on a determination result by the jackpot determination process is performed, the main control board includes a central processing unit that executes various processes, and the central processing unit Includes a hardware random number generation means for generating and outputting a first hardware random value and a second hardware random value, and the central processing unit confirms that a game ball has been detected by the starting means. As a trigger, a big hit determination random number is generated by calculating the first hardware random value and the second hardware random value using a predetermined calculation method, and it is determined whether or not it matches the big hit determination value. It is configured to execute the jackpot determination processing by Rukoto, the hard random number generating means, while updating the first hardware random number at predetermined intervals, when the first hardware random number is read Alternatively, the second hardware random number value is updated when the first hardware random number value matches a predetermined specific value .

According to a second aspect of the present invention, in the first aspect of the present invention, each hardware random number value is represented by a binary number, and the central processing unit has the first hardware random number value and the first hardware random number value. If the hardware random number value of 2 compares the values of each digit and they are the same value, one of the binary numbers is set as the comparison target digit, and if it is a different value The gist of the invention is to generate a jackpot determination random number by performing arithmetic processing by setting the other value to the digit to be compared.

The invention according to claim 3 includes a main control board that executes a jackpot determination process for determining whether or not a big hit is triggered when the game ball is detected by the starting means, and the determination result by the jackpot determination process is In a gaming machine in which a symbol variation game that varies a plurality of types of symbols is performed, the main control board includes a central processing unit that executes various processes, and the central processing unit includes a first hardware disturbance. A hardware random number generating unit that generates and outputs a numerical value and a second hardware random number value, and a software random number storage unit that stores a software random number value updated by the central processing unit are built-in, When the game ball is detected by the starting means, the second hardware random number value and the software random number value are calculated by a predetermined calculation method to determine the big hit Generating a random number for use, and determining whether or not the jackpot determination value coincides with the jackpot determination value. The hard random number generation means is configured to determine a first hardware random number value in advance. The second hardware random number value is updated when the first hardware random number value is read or when the first hardware random number value matches a predetermined specific value. The gist is that it is configured to be updated.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the second hardware random number value and the software random number value are expressed in binary numbers, and the central processing unit If the hardware random number value and the software random number value are compared with each other and the values are the same, one of the binary numbers is set as the comparison target digit and the values are different. The gist is to set the other value to the digit to be compared.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the central processing unit includes a changing unit that changes an update order of each hardware random number value. The gist is that it is provided.

  According to the present invention, it is possible to prevent the occurrence of an illegal jackpot.

A front view showing a pachinko machine. The block diagram which shows the control structure of a gaming machine. (A) is explanatory drawing which shows a calculation system, (b) is explanatory drawing which shows the specific example of a calculation.

(First embodiment)
Hereinafter, a first embodiment in which the present invention is embodied in a pachinko gaming machine which is a kind of gaming machine will be described with reference to FIGS.

  FIG. 1 schematically shows a front surface side of a pachinko gaming machine (hereinafter referred to as a gaming machine) 10, and various vertical game components are set on the front side of an opening of an outer frame 11 that forms the outer shell of the machine body. A rectangular inner frame 12 is assembled so as to be openable and detachable. On the front side of the middle frame 12, a front frame 14 having a glass frame on which a protective glass for protecting the game board 13 disposed inside the machine is mounted and an upper ball tray 15 are opened and closed in a laterally open state. It is assembled as possible. The front side of the front frame 14 and the game area 13a of the game board 13 are provided with a decoration lamp 16 as an effect execution means for executing a light emission effect by light emission (lighting (flashing)) of a light emitter (LED, lamp, etc.). It has been. Below the outer frame 11, a speaker 17 is arranged as an effect executing means for outputting various sounds and performing a game effect based on the sound output. A lower ball tray 18 and a launching device 19 are attached to the lower part of the middle frame 12. An operation handle 19a attached to the launching device 19 so as to rotate with respect to the gaming machine 10 is connected. Then, when the player operates the operation handle 19 a, the launching device 19 is driven, and the game ball in the upper ball tray 15 can be launched to the game area 13 a of the game board 13.

  In the game area 13a of the game board 13, a variable display H2 as a liquid crystal display type display device is disposed. In the variable display H2, display effects relating to the symbol variation game are performed. Specifically, on the variable display H2, a display effect based on a variation image (or image display) is performed, and a symbol variation game is performed in which a symbol combination is displayed by varying a plurality of types of symbols in a plurality of columns. In the present embodiment, it is possible to recognize a big hit or loss from a display result (symbol combination) derived by the symbol variation game executed by the variable display H2. When the big hit display result is displayed in the symbol variation game, the big hit game is awarded.

  Below the variable display H2, a start winning port 20 having a game ball entrance is disposed. In addition, a start opening switch SW1 (shown in FIG. 2) as a start winning means for detecting a game ball that has entered is disposed behind the start winning opening 20. The start winning opening 20 (the start opening switch SW1) can provide a start condition for the symbol variation game and a payout condition for a game ball as a predetermined number of prize balls by detecting the game ball that has entered. It should be noted that a part of the game balls launched onto the game board 13 by the launching device 19 is guided to the start winning opening 20 by a game nail or the like arranged on the game board 13 when flowing down the game board 13. It has become.

  Below the start winning opening 20, a large winning opening (special electric accessory) 21 having a large winning opening door that opens and closes by the operation of an actuator (solenoid, motor, etc.) (not shown) is disposed. A count switch SW <b> 2 (shown in FIG. 2) that detects a game ball that has entered the ball is disposed in the back of the special winning opening 21. The big winning opening 21 can give a payout condition of game balls as a predetermined number of prize balls by detecting the game balls that have entered. The big winning opening 21 is allowed to enter a game ball by being opened by opening the big winning opening door during the big hit game. For this reason, during the big hit game, the player can obtain a chance to win a prize ball.

Next, the control configuration of the pachinko gaming machine will be described with reference to FIG.
A main control board 30 for controlling the entire pachinko gaming machine is mounted on the back side of the machine. The main control board 30 executes various processes for controlling the entire pachinko gaming machine and outputs various control signals (control commands) according to the processing results. An effect control board 31 is mounted on the back side of the machine. The effect control board 31 executes various processes for controlling the game effect based on the control signal (control command) output from the main control board 30 and displays the display mode ( The display image of the design, background, characters, etc.), the light emission mode of the decorative lamp 16, the sound output mode from the speaker 17, and the like are controlled.

Hereinafter, specific configurations of the main control board 30 and the effect control board 31 will be described.
The main control board 30 is provided with a main control CPU 30a as a central processing unit that executes control operations in a predetermined procedure. The main control CPU 30a includes a main control ROM 30b that stores a control program for the main control CPU 30a and a main control RAM 30c that can write and read necessary data. That is, the main control ROM 30b and the main control RAM 30c are housed in one chip and cannot be illegally accessed from the outside. The main control CPU 30a is connected to various switches such as a start port switch SW1 and a count switch SW2. The main control CPU 30a of the main control board 30 uses the main control ROM 30b and the main control RAM 30c to execute various processes related to the symbol variation game and the big hit game based on the main control program. .

  Further, the main control CPU 30a executes random number update processing (random number generation processing) for updating various random number values at predetermined intervals. The main control RAM 30c stores (sets) various pieces of information (random numbers, timer values, flags, etc.) that are appropriately rewritten during the operation of the pachinko gaming machine.

  The main control ROM 30b stores a main control program and a plurality of types of variation patterns. The variation pattern is a pattern that serves as a base for effects (display effects, light-emitting effects, sound effects) from the start of the symbol variation game to the end of the symbol variation game. Time) and the like. The main control ROM 30b stores a big hit determination value. The jackpot determination value is a determination value used in the jackpot lottery and is determined from numerical values that can be taken by the jackpot determination random number used in the jackpot determination.

Next, the effect control board 31 will be described.
On the effect control board 31, an effect control CPU 31a that can execute control operations in a predetermined procedure, an effect control ROM 31b that stores a control program for the effect control CPU 31a, and necessary data can be written and read. An effect control RAM 31c is provided. A variable display H2 is connected to the effect control CPU 31a. The effect control ROM 31b stores various image data (image data such as symbols, backgrounds, characters, characters, etc.). In addition to the overall control program, the effect control ROM 31b stores various tables to be referred to when determining various effects. In addition, various information (timer value, flag, etc.) that is appropriately rewritten during the operation of the pachinko gaming machine is stored (set) in the effect control RAM 31c. The effect control CPU 31a of the effect control board 31 executes various processes based on the control program. Specifically, when various control commands are input, the effect control CPU 31a executes processing according to the control commands. As a result, various game effects such as effects related to the symbol variation game and the big hit game, and demonstration effects are executed.

  Next, various processes related to the symbol variation game executed by the main control CPU 30a of the main control board 30 based on the main control program will be described. In the present embodiment, the main control CPU 30a executes an interrupt process related to the symbol variation game every predetermined interrupt period (for example, 4 ms).

  For example, when executing an interrupt process, the main control CPU 30a updates a software random number value used for determining various random number values for each interrupt cycle. The main control CPU 30a uses this software random number value to specify an effect random number for determining the effect pattern and a symbol determining random number for determining the symbol.

  Further, the main control CPU 30a inputs a detection signal that is output when a game ball has entered the start winning opening 20, that is, when the start opening switch SW1 detects a game ball when the interrupt process is executed. If so, a big hit determination random number value is generated and acquired as a trigger. Then, at the start of the symbol variation game, the main control CPU 30a compares the acquired jackpot determination random number value with the jackpot determination value, and performs a jackpot lottery (jackpot determination) as to whether or not it is a jackpot. Then, according to the determination result of the jackpot determination, the main control CPU 30a determines the variation pattern and the display result of the symbol variation game, and outputs (notifies) the result to the effect control board 31.

Then, the effect control CPU 31a of the effect control board 31 causes the game effect related to the symbol variation game to be executed based on the variation pattern and the display result determined by the main control CPU 30a.
Next, a configuration for generating a big hit determination random number for the main control CPU 30a, a random number update method, and a big hit determination random number generation method in the present embodiment will be described.

  As shown in FIG. 2, the main control CPU 30a includes a control unit 51 that performs operations such as comparison and rewriting of values, and a register 52 that stores various random numbers and flags such as hardware random numbers. It has. The content stored in the register 52 is configured so that it cannot be read from outside the main control CPU 30a. The register 52 of the present embodiment stores at least a first hardware random value and a second hardware random value.

Next, a method for updating the first hardware random value will be described.
The control unit 51 of the main control CPU 30a executes various controls based on an internal clock signal having a period different from at least the interrupt period (having a period shorter than 4 ms in this embodiment). For example, the interrupt process is executed when the internal clock signal has been updated a predetermined number of times (when the predetermined number of cycles of the internal clock signal has elapsed). The main control CPU 30a updates the first hardware random number value every cycle of the internal clock signal. Specifically, the control unit 51 of the main control CPU 30 a updates the first hardware random number value by adding 1 to each cycle of the internal clock signal, and stores it in the register 52. Note that the first hardware random number value of the present embodiment is a total of 65536 integers from 0 to 65535. When the control unit 51 of the main control CPU 30a updates the first hardware random number value up to the upper limit value (65535 in the present embodiment) of the first hardware random number value, the initial value (the present embodiment). Then, it is updated again from 0). Further, when stored in the register 52, the first hardware random number value is represented by a binary number.

Next, a second hardware random number update method will be described.
The control unit 51 of the main control CPU 30a updates the second hardware random number every time a predetermined process is executed. Specifically, when the first hardware random number value is read from the register 52, the control unit 51 of the main control CPU 30a matches the predetermined specific value with the first hardware random number value. Or when a predetermined input signal is input, the second hardware random number value is updated.

  Note that the second hardware random number value of the present embodiment is a total of 65536 integers from 0 to 65535. When the control unit 51 of the main control CPU 30a updates the second hardware random value up to the upper limit value (65535 in the present embodiment) of the second hardware random value, the initial value (the present embodiment). Then, it is updated again from 0). Further, when stored in the register 52, the second hardware random number value is represented by a binary number. The specific value may be an arbitrary value, and may be one or more. In the present embodiment, the prime number is a specific value. In the present embodiment, the input signal may be any signal input to the main control CPU 30a. In the present embodiment, the detection signal is input from the start winning port 20 (the start port switch SW1).

Next, a method for generating a jackpot determination random number will be described.
The control unit 51 of the main control CPU 30a receives the first hardware random number value stored in the register 52 and the second second time triggered by the input of a detection signal output when the start port switch SW1 detects a game ball. The hardware random number value is calculated by a predetermined calculation method to generate a jackpot determination random number value.

  Specifically, as shown in FIG. 3A, the main control CPU 30a compares values for each digit of the first hardware random value and the second hardware random value. Then, the main control CPU 30a sets “0” as the digit to be compared when the values for each digit match, and sets “1” as the digit to be compared when different. Set to. For example, as shown in FIG. 3B, when the first hardware random number value is “1100 1001 0101 1110” and the second hardware random number value is “0110 0011 0111 1010”, The random value is “1010 1010 0010 0100”. In this way, by converting the combination of two patterns into one pattern, the bias is eliminated. Also, the number of digits is not changed.

  The main control CPU 30a performs a big hit lottery using the big hit determination random number. Specifically, when a game ball has entered the start winning opening 20, the main control CPU 30a uses the first hardware random number value and the second hardware random number value as described above to determine whether or not to hit the big hit. A numerical value is generated, and the generated jackpot determination random number value is stored in the main control RAM 30c. Then, the main control CPU 30a compares the jackpot determination random number stored in the main control RAM 30c at the start of the symbol variation game with the jackpot determination value, and determines that the symbol variation game is a big hit if they match. To do. If they do not match, it is determined that the symbol variation game is lost.

  Then, the main control CPU 30a determines the effect contents of the symbol variation game and the symbol type to be stopped and displayed based on the determination result of the big hit determination. The main control CPU 30a reads the software random number when determining the effect contents of the symbol variation game, determines the effect random number value based on the software random value, and determines the effect contents according to the effect random number. To do. Similarly, when determining a symbol to be stopped and displayed, the main control CPU 30a reads a software random number, determines a symbol determining random value based on the software random value, and determines a jackpot determination according to the symbol determining random number. The type of symbol indicating the determination result is determined. Thus, the control unit of the main control CPU 30a serves as a hard random number generation means. The main control RAM 30c serves as software random number storage means.

As described above in detail, the present embodiment has the following effects.
(1) A big hit determination random number is generated using two hardware random number values stored in a register 52 incorporated in the main control CPU 30a (central processing unit). For this reason, it is more difficult to predict from the outside of the main control CPU 30a than when generating a big hit determination random number using only a software random number value or using only a hardware random number value input from an external IC. , Can prevent illegal jackpots. In addition, since the calculation is performed by a predetermined calculation method using two hardware random numbers, it is difficult to predict the big hit determination random number, and an illegal big hit can be prevented. Further, since the first hardware random number value and the second hardware random value update method are different from each other, it is more difficult to predict and an illegal jackpot can be prevented.

  (2) The time point when the first hardware random number value is read, the time point when the first hardware random number value matches a predetermined specific value, and the time point when the detection signal is input are usually highly random and are predicted. It is a difficult process. For this reason, by updating the second hardware random number value at these times, it becomes difficult to predict the second hardware random value, and as a result, an illegal jackpot can be prevented.

  (3) When generating the big hit determination random number, the main control CPU 30a compares values for each digit of the first hardware random number value and the second hardware random number value. Then, the main control CPU 30a sets “0” as the digit to be compared when the values for each digit match, and sets “1” as the digit to be compared when different. Set to. Since the calculation is performed in such a manner, it is possible to generate a jackpot determination random number that is less biased and difficult to predict. In addition, since addition, subtraction, multiplication, and division are not performed, the number of digits does not change and processing is easy.

(Second embodiment)
Next, a second embodiment embodying the present invention will be described. In addition, the same code | symbol as 1st embodiment is attached | subjected to the structure similar to 1st embodiment, the detailed description and drawing are abbreviate | omitted or simplified.

  The main control RAM 30c stores a software random number value used when generating a big hit determination random number. This software random number value is updated every interrupt cycle (every 4 ms). Specifically, the main control CPU 30a updates the software random value by adding 1 for each interrupt period. Note that the software random number values of the present embodiment are 65536 integers ranging from 0 to 65535. When the software random number value is updated up to the upper limit value of the software random number value (65535 in this embodiment), the control unit 51 of the main control CPU 30a updates again from the initial value (0 in this embodiment). It is like that. When stored in the main control RAM 30c, the software random number value is expressed in binary.

Next, a second hardware random number update method in the second embodiment will be described.
The control unit 51 of the main control CPU 30a updates the second hardware random number value when the software random number value is read from the main control RAM 30c or when the software random number value matches a predetermined specific value. It is supposed to be. Note that the second hardware random number value of the present embodiment is a total of 65536 integers from 0 to 65535. Further, when stored in the register 52, the second hardware random number value is represented by a binary number. The specific value may be an arbitrary value, and may be one or more. In the present embodiment, the prime number is a specific value. In the present embodiment, the input signal may be any signal input to the main control CPU 30a. In the present embodiment, the detection signal is input from the start winning port 20 (the start port switch SW1).

As described above in detail, this embodiment has the following effects in addition to the effects (1) and (3) of the first embodiment.
(4) The time when the software random number value is read and the time when the software random value matches a predetermined specific value is usually a process that is highly random and difficult to predict. For this reason, by updating the second hardware random number value at these times, it becomes difficult to predict the second hardware random value, and as a result, an illegal jackpot can be prevented. Even if the software random number value is predicted, the second hardware random number value of the register 52 built in the main control CPU 30a is updated, so it is difficult to predict how it is updated, and fraud is suppressed. can do.

  (5) The software random number value is updated at a cycle different from the update cycle of the internal clock signal. Thus, since the random number value for jackpot determination is determined using two random numbers having different update cycles, it is difficult to predict and fraud can be suppressed.

(Third embodiment)
Next, a third embodiment embodying the present invention will be described. In addition, the same code | symbol as 1st embodiment is attached | subjected to the structure similar to 1st embodiment, the detailed description and drawing are abbreviate | omitted or simplified.

  The main control RAM 30c stores a software random number value used when generating a big hit determination random number. This software random number value is updated every interrupt cycle (every 4 ms). Specifically, the main control CPU 30a updates the software random value by adding 1 for each interrupt period. Note that the software random number values of the present embodiment are 65536 integers ranging from 0 to 65535. When the software random number value is updated up to the upper limit value of the software random number value (65535 in this embodiment), the control unit 51 of the main control CPU 30a updates again from the initial value (0 in this embodiment). It is like that. When stored in the main control RAM 30c, the software random number value is expressed in binary.

Next, a method for generating a jackpot determination random number in the third embodiment will be described.
The control unit 51 of the main control CPU 30a receives the second hardware random number value stored in the register 52 and the main hardware value when the detection signal output when the start port switch SW1 detects a game ball is input. The software random number value stored in the control RAM 30c is calculated by a predetermined calculation method to generate a jackpot determination random number value.

  Specifically, the main control CPU 30a compares the values for each digit of the software random number value and the second hardware random number value. Then, the main control CPU 30a sets “0” as the digit to be compared when the values for each digit match, and sets “1” as the digit to be compared when different. Set to.

As described above in detail, this embodiment has the following effects in addition to the effect (2) of the first embodiment and the effect (5) of the second embodiment.
(6) A big hit determination random number is generated using the second hardware random number value stored in the register 52 built in the main control CPU 30a (central processing unit) and the software random number value. For this reason, it is more difficult to predict from the outside of the main control CPU 30a than when generating a big hit determination random number using only a software random number value or using only a hardware random number value input from an external IC. , Can prevent illegal jackpots. In addition, since the second hardware random number value and the software random number value are used for calculation by a predetermined calculation method, the big hit determination random number becomes difficult to predict and an illegal big hit can be prevented.

  In addition, the second hardware random number value is updated when the first hardware random value is read or when the first hardware random value matches a predetermined specific value. Difficult to predict. For this reason, the big hit determination random number using the second hardware random value and the software random number value is more difficult to predict and can prevent an illegal big hit.

  (7) When generating the big hit determination random number, the main control CPU 30a compares the values for each digit of the software random number value and the second hardware random number value. Then, the main control CPU 30a sets “0” as the digit to be compared when the values for each digit match, and sets “1” as the digit to be compared when different. Set to. Since the calculation is performed in such a manner, it is possible to generate a jackpot determination random number that is less biased and difficult to predict. In addition, since addition, subtraction, multiplication, and division are not performed, the number of digits does not change and processing is easy.

(Fourth embodiment)
Next, a fourth embodiment embodying the present invention will be described. In addition, the same code | symbol as 1st embodiment is attached | subjected to the structure similar to 1st embodiment, the detailed description and drawing are abbreviate | omitted or simplified.

  The main control RAM 30c stores a software random number value used when generating a big hit determination random number. The main control CPU 30a updates the software random number at predetermined intervals until the next interrupt process starts when various processes related to the symbol variation game are finished in the interrupt process and become in a standby state. It is like that. That is, the main control CPU 30a is configured to update the software random number value using the remaining time after completing the interrupt processing in the interrupt cycle. Specifically, the main control CPU 30a is shorter than the interrupt cycle (4 ms) from the end of various processing related to the symbol variation game in the interrupt processing to the start of the next interrupt cycle, In addition, the software random number value is incremented by one and updated at every update period (for example, 0.1 ms) different from the internal clock signal. Note that the software random number values of the present embodiment are 65536 integers ranging from 0 to 65535. When the software random number value is updated up to the upper limit value of the software random number value (65535 in this embodiment), the control unit 51 of the main control CPU 30a updates again from the initial value (0 in this embodiment). It is like that. When stored in the main control RAM 30c, the software random number value is expressed in binary.

Next, a method for generating a jackpot determination random number in the fourth embodiment will be described.
The control unit 51 of the main control CPU 30a receives the first hardware random number value stored in the register 52 and the second second time triggered by the input of a detection signal output when the start port switch SW1 detects a game ball. The hardware random number value is calculated by a predetermined calculation method, and the calculation result is obtained. Thereafter, the control unit 51 of the main control CPU 30a calculates the jackpot determination random number value by calculating the calculation result and the software random number value stored in the main control RAM 30c by a predetermined calculation method. .

As described above in detail, this embodiment has the following effects in addition to the effect (2) of the first embodiment and the effect (5) of the second embodiment.
(8) By using the first hardware random value, the second hardware random value, and the software random value, it is possible to make the jackpot determination random number more difficult to predict. In addition, the software random number value is updated at predetermined intervals until the next interrupt process is started after various processes in the interrupt process are completed. The time from the end of various processes in the interrupt process to the start of the next interrupt process varies depending on the actual processing contents of the various processes. For this reason, it is difficult to predict how much the software random number will be updated. Therefore, fraud can be suppressed.

In addition, you may change the said embodiment as follows.
In the above embodiment, the jackpot determination random number value is generated. However, the symbol determination random value for determining the symbol type may be generated by the same generation method. Further, a random value for determining the type of jackpot game or the presence or absence of a probability variation state in which the winning probability of the jackpot determination is high may be generated by the same generation method.

  In the second embodiment and the third embodiment, the software random number value is updated by adding 1 for each interrupt cycle. However, the software random value may be updated at another time. For example, the main control CPU 30a, when various processes related to the symbol variation game are finished in the interrupt process and enters a standby state, the software random number value is given at predetermined intervals until the next interrupt process starts. You may make it update. That is, the main control CPU 30a may update the software random number value by using the remaining time after completing the interrupt processing in the interrupt cycle. For example, the CPU 30a for main control is shorter than the interrupt cycle (4 ms) from the time when various processes related to the symbol variation game are completed until the next interrupt cycle is started, You may make it update by adding 1 software random number value for every period of an update period (for example, 0.1 ms) different from a clock signal.

In the fourth embodiment, the main control CPU 30a may update the software random number value every interrupt cycle.
In the above embodiment, the main control CPU 30a includes the main control RAM 30c and the main control ROM 30b.

  In the above embodiment, the variable display H2 is a liquid crystal display. However, a dot matrix display or an 8-segment LED display may be used, or a mechanical display such as a drum display may be used.

  In the above embodiment, the first hardware random number value, the second hardware random number value, the number of digits of the software random number value, and the possible range may be arbitrarily changed. Note that the same number of digits is desirable.

-In the said embodiment, you may change arbitrarily the calculation system at the time of generating the random number for jackpot determination. For example, addition, subtraction, multiplication, and division may be used.
In the fourth embodiment, the control unit 51 changes the method for calculating the first hardware random value and the second hardware random value, the calculation result, and the method for calculating the software random value. Also good. For example, the calculation result and the software random number value may be added. By changing the calculation method in this way, it is possible to make it harder to predict the jackpot determination random value.

In the above embodiment, the update cycle of the first hardware random value may be arbitrarily changed.
In the above embodiment, the first hardware random number value is updated every cycle of the internal clock signal, but may be updated every plural cycles of the internal clock signal. For example, it may be updated every 4 cycles of the internal clock signal, or may be updated every 10 cycles of the internal clock signal.

  In the above embodiment, when the first hardware random number value is read from the register 52, the control unit 51 of the main control CPU 30a matches the first hardware random value with a predetermined specific value. Or when a predetermined input signal is input, the second hardware random number value is updated. As another example, the update period of the second hardware random number value may be arbitrarily changed as long as it is updated when a predetermined process is executed. For example, the control unit 51 of the main control CPU 30a may update the second hardware random number value only when the first hardware random number value is read from the register 52. Similarly, the control unit 51 of the main control CPU 30a may update the second hardware random value only when the first hardware random value matches a predetermined specific value. Similarly, the control unit 51 of the main control CPU 30a may update the second hardware random number value only when a predetermined input signal is input. Even when other processing is performed, the control unit 51 of the main control CPU 30a may update the second hardware random number value. In other words, any process may be used as long as it is a predetermined process, and even when one specific type of process is performed, any one of a plurality of predetermined processes is performed. But you can.

  In the second embodiment, the main control CPU 30a updates the software random number value every predetermined period until the next interrupt process is started after various processes in the interrupt process are completed. The update cycle and update timing may be arbitrarily changed. For example, the software random number value may be updated every interrupt cycle. The software random number value may be updated when a plurality of interrupt cycles have elapsed.

In the third embodiment, the control unit 51 of the main control CPU 30a may generate a big hit determination random value by calculating the first hardware random value and the software random value.
In the fourth embodiment, the control unit 51 of the main control CPU 30a calculates the first hardware random number value and the software random number value by a predetermined calculation method, and then calculates the calculation result and the second The hardware random number value may be calculated by a predetermined calculation method to generate a jackpot determination random number value.

  In the fourth embodiment, the control unit 51 of the main control CPU 30a calculates the second hardware random number value and the software random number value by a predetermined calculation method, and then calculates the calculation result and the first The hardware random number value may be calculated by a predetermined calculation method to generate a jackpot determination random number value.

  In the second embodiment, the control unit 51 of the main control CPU 30a calculates the first hardware random value and the second hardware random value using a predetermined calculation method, and then performs the calculation The result and the software random number value may be calculated by a predetermined calculation method to generate a jackpot determination random number value.

  In the second embodiment, the control unit 51 of the main control CPU 30a calculates the first hardware random number value and the software random number value by a predetermined calculation method, and then calculates the calculation result and the first The hardware random number value of 2 may be calculated by a predetermined calculation method to generate a jackpot determination random number value.

  In the second embodiment, the control unit 51 of the main control CPU 30a calculates the software random number value and the second hardware random number value by a predetermined calculation method, and then calculates the calculation result, One hardware random number value may be calculated by a predetermined calculation method to generate a jackpot determination random number value.

  In the second embodiment to the fourth embodiment, the software random number update method may be arbitrarily changed. For example, when setting the initial value, the main control CPU 30a may set a different initial value each time within the range that the software random number value can take. Further, although the update is performed by adding 1, the update order may be changed. For example, the order may be changed so that the odd number comes first, or the order so that the prime number comes first. This makes it difficult to predict the software random number value.

  -In the said embodiment, you may change arbitrarily the update order of a hardware random value. For example, the order may be changed so that the odd number comes first, or the order so that the prime number comes first. In this way, it is possible to make it difficult to predict hardware random numbers. Further, the update cycle of the update order may be changed between the first hardware random value and the second hardware random value. For example, the update order of the first hardware random number value may be changed every predetermined cycle, and the update order of the second hardware random value may be changed every time a predetermined process is executed. In this case, the main control CPU 30a becomes the changing means.

Next, a technical idea that can be grasped from the above embodiment and another example will be added below.
(B) a main control board that controls the entire gaming machine and an effect control board that controls the effect execution means based on a control signal from the main control board, and that the game ball is detected by the start winning means In a gaming machine in which a symbol variation game that fluctuates a plurality of types of symbols is performed as an opportunity, the main control board includes a central processing unit that executes various processes, and the central processing unit stores a hardware random number value. A hard random number generating means for generating and outputting and a software random number storage means for storing a software random number value updated by the central processing unit are incorporated, and the central processing unit detects that a game ball has been won by the start winning means. As a result, a random number for jackpot determination is generated by calculating a hardware random number value and a software random number value using a predetermined calculation method, and the same value as the jackpot determination value is set. By determining whether or not to perform a jackpot determination process for determining whether or not the symbol variation game is a big hit, the hardware random number generating means has a hardware random number value determined in advance The gaming machine is updated every cycle, and the central processing unit is configured to update a software random number value when a predetermined process is executed.

(B) The central processing unit is provided with software random number storage means for storing a software random number value updated by the central processing unit. The central processing unit includes a first hardware random number value and a second hardware random number value. Hardware random number generation means for generating and outputting the hardware random number value of the second hardware random number value and software when the game ball is detected by the starting winning means. After calculating the random number value with a predetermined calculation method, the calculation result and the first hardware random value are used to calculate the big hit determination random number by calculating with the predetermined calculation method. by determining whether or not consistent with the determination value, symbol variation games Ru is configured to perform the determining jackpot determination processing whether a jackpot.

(C) The central processing unit is provided with software random number storage means for storing software random number values updated by the central processing unit. The central processing unit includes a first hardware random number value and a second hardware random number value. Hardware random number generation means for generating and outputting the hardware random number value of the first hardware random number value and the first hardware random number value when the game ball is detected by the start winning means. After calculating the hardware random number value of 2 with a predetermined calculation method, a random number for jackpot determination is generated by calculating with the predetermined calculation method using the calculation result and the software random number value, by determining whether matches the jackpot determining value, symbol variation games Ru is configured to perform the determining jackpot determination processing whether a jackpot.

(D) The central processing unit is provided with software random number storage means for storing a software random number value updated by the central processing unit. The central processing unit includes a first hardware random number value and a second hardware random number value. Hardware random number generating means for generating and outputting the hardware random number value is built-in, and the central processing unit, when the game ball is detected by the winning winning means, the software random number value and the first hardware After calculating the random number value with a predetermined calculation method, a big hit determination random number is generated by calculating with the predetermined calculation method using the calculation result and the second hardware random number value, by determining whether matches the jackpot determining value, symbol variation games Ru is configured to perform the determining jackpot determination processing whether a jackpot.

(E) The central processing unit updates the software random number value from the initial value in a predetermined order, updates all values within the range that the software random number value can take, sets the initial value again, and sets the initial value It is configured to update the value, the central processing unit, when setting the initial value, to set each time different initial value within the possible range of software random number.

(F) The changing means changes the update order of one hardware random value every predetermined period, and changes the update order every time a predetermined process is executed for the other hardware random value. that has been configured to.

(G) the hard random number generating means, each period of the internal clock signal in the central processing unit, or each time the internal clock signal to a plurality of cycles elapsed, to update the first hardware random number.

(H) the central processing unit, to update the software random number to interrupt each cycle is a period for performing various processes.

  DESCRIPTION OF SYMBOLS 10 ... Game machine, 30 ... Main control board, 30a ... Main control CPU, 30b ... Main control ROM, 30c ... Main control RAM, 31 ... Production control board, 31a ... Production control CPU, 51 ... Control part, 52. Register.

Claims (5)

A main control board that executes a jackpot determination process for determining whether or not a big hit is detected when a game ball is detected by the starting means, and a plurality of types of symbols are varied based on the determination result of the jackpot determination process. In gaming machines where symbol variation games are played,
The main control board is provided with a central processing unit for performing various processes,
The central processing unit has a built-in hardware random number generating means for generating and outputting a first hardware random value and a second hardware random value,
The central processing unit determines the jackpot by calculating the first hardware random number value and the second hardware random number value by a predetermined calculation method when the game ball is detected by the starting means. Generating a random number for use and configured to execute the jackpot determination process by determining whether or not it matches the jackpot determination value;
The hard random number generation means includes
While updating the first hardware random value every predetermined period,
The second hardware random number value is updated when the first hardware random number value is read or when the first hardware random number value matches a predetermined specific value . A gaming machine characterized by that. Each hardware random value is represented in binary,
The central processing unit compares the value of each digit of the first hardware random value and the second hardware random value, and if they are the same value, one of the binary numbers is compared. Claim 2 is set to a digit that has become a different value, and if the value is different, the other value is set to the digit that is to be compared to perform a calculation process to generate a random number for jackpot determination The gaming machine according to 1 . A main control board that executes a jackpot determination process for determining whether or not a big hit is detected when a game ball is detected by the starting means, and a plurality of types of symbols are varied based on the determination result of the jackpot determination process. In gaming machines where symbol variation games are played,
The main control board includes
It has a central processing unit that performs various processes.
The central processing unit includes a hardware random number generation unit that generates and outputs a first hardware random number value and a second hardware random number value, and software that stores a software random number value updated by the central processing unit Random number storage means is built-in,
The central processing unit generates a jackpot determination random number by calculating the second hardware random number value and the software random number value by a predetermined calculation method when the game ball is detected by the starting means. And the jackpot determination process is performed by determining whether or not the jackpot determination value matches,
The hard random number generation means includes
While updating the first hardware random value every predetermined period,
The second hardware random number value is updated when the first hardware random number value is read or when the first hardware random number value matches a predetermined specific value. A gaming machine characterized by that. The second hardware random number value and the software random number value are expressed in binary numbers, respectively.
The central processing unit compares the value of each digit of the second hardware random number value and the software random number value, and when the values are the same, one of the binary numbers is a comparison target digit. The gaming machine according to claim 3 , wherein if the value is different, the other value is set to a digit to be compared. The gaming machine according to any one of claims 1 to 4 , wherein the central processing unit is provided with changing means for changing the update order of each hardware random number value.

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