JP2023042886A - game machine - Google Patents

Abstract

To provide a game machine in which a fraudulent action and poor stand can precisely be detected in the game machine having a rotary accessory as lottery means.SOLUTION: A game machine is provided with multiple ball inlet holes where game balls are made to come in, and having the rotary accessory 10 rotated centering on a rotating shaft and distributing the game balls to any ball inlet hole. The game machine comprises a winning ball inlet hole 21 for imparting benefit to a game player in a portion of the multiple ball inlet holes. The game machine is configured to detect whether or not the abnormality occurs in the winning probability being the probability of the game balls to come in the winning ball inlet hole 21 from the multiple ball inlet holes by using different multiple conditions about results of sorting of the game balls generated in the past game.SELECTED DRAWING: Figure 2

Description

The present invention relates to a game machine such as a pachinko game machine.

Conventionally, for example, a pachinko game machine, which is one of the game machines, has a means for performing a physical (mechanical) lottery instead of a program lottery as a means for performing a lottery for giving a privilege to a player. there is something For example, in Japanese Unexamined Patent Application Publication No. 2019-136249, a rotating accessory is provided for a game ball flow-down area, and a game is played in a specific ball entrance (V zone) among a plurality of ball entrances provided in the rotating accessory. Disclosed is a pachinko game machine that provides a jackpot when a ball enters the machine.

JP 2019-136249 A

However, in a pachinko machine having a physical lottery means such as the one disclosed in Patent Document 1, there is a problem that a player is likely to commit a fraudulent act (so-called cheating) to obtain a privilege by a method not intended by the manufacturer. For example, there are cases where a magnet is brought closer to control the movement of the game ball, the game table is shaken, or the inclination of the game table is changed, etc., to win a prize that should have been lost. .

Then, as one of the means for preventing such silly acts, it is possible for the hall side to monitor the winning probability. For example, in the pachinko game machine disclosed in Patent Document 1, six ball entrances are formed in the rotating accessory, one of which is a V zone. That is, when the game ball reaches the rotating accessory, the probability of winning in the V zone should be about 1/6, and if the probability is greatly deviated from such a probability, a fraudulent act is suspected. In addition to goto acts, there are cases where game machines that are easier or harder to win prizes than originally intended may be created due to unexpected matters on the part of the manufacturer, such as defective molding of parts. ) is also monitored.

However, the winning probability of the rotating role may be biased by chance, and it is difficult to accurately detect cheating and bad machines by monitoring the winning probability.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the prior art, and provides a game machine that has a rotating accessory as a lottery means and that can accurately detect fraudulent acts and defective machines. intended to provide

In order to achieve the above object, a gaming machine according to the present invention is provided with a flow-down area in which game balls flow down, and a plurality of ball entrances provided in the flow-down area, into which game balls enter, and which rotates around a rotating shaft. a rotating accessory that rotates and distributes game balls to one of the ball entrances, wherein part of the plurality of ball entrances includes a prize winning opening for awarding a privilege to a player; and storage means for storing the results of allocating the game balls of the rotating accessory generated during the game, and storing the results of allocating the game balls stored by the storage means when the game balls enter the plurality of ball entrances. an abnormality detection means for detecting whether or not an abnormality has occurred in the winning probability, which is the probability of a ball entering the winning hole from the starting point, using a plurality of different conditions.

According to the gaming machine according to the present invention having the above-described configuration, in a gaming machine having a rotating accessory as a lottery means, an abnormality in the winning probability is detected using a plurality of different conditions. It becomes possible to detect a fraudulent act or a defective stand.

1 is a front view of a pachinko gaming machine according to an embodiment of the present invention; FIG. 1. It is explanatory drawing which expands and shows the rotary accessory provided in the pachinko game machine shown in FIG. It is a diagram illustrating a case where a ball is entered into a winning ball entrance in the rotating accessory provided in the pachinko gaming machine shown in FIG. 1. It is a figure explaining the case where it enters into a losing ball entrance in the rotary accessory provided in the pachinko game machine shown in FIG. 1. It is explanatory drawing which shows with a block the electrical structure of the main-control board and peripheral equipment provided in the pachinko game machine shown in FIG. 1. It is explanatory drawing which shows with a block the electrical structure of the sub-control board and peripheral device which were provided in the pachinko game machine shown in FIG. It is a figure showing the distribution history of the rotating accessory stored in the RAM. It is a flowchart of the abnormality detection process which the microcomputer for production|presentation control performs. FIG. 9 is a flowchart of abnormality detection processing from a first viewpoint executed by the performance control microcomputer in the abnormality detection processing shown in FIG. 8; FIG. FIG. 9 is a flowchart of abnormality detection processing from a second viewpoint executed by the effect control microcomputer in the abnormality detection processing shown in FIG. 8; FIG.

A gaming machine according to an embodiment of the present invention will be described with reference to the drawings. In this embodiment, a pachinko game machine will be described as a game machine according to an embodiment of the present invention. In the following explanation, when explaining the direction of each part of the pachinko gaming machine, the direction viewed from the player playing the game facing the pachinko gaming machine is used as a reference. Specifically, the left-right direction and the up-down direction of each part of the pachinko game machine are the left-right direction and the up-down direction viewed from the player. Also, the direction toward the player is defined as the front, and the direction away from the player is defined as the rear.

[Main Configuration of Pachinko Machines]
As shown in FIG. 1 , the pachinko gaming machine 1 has a gaming machine frame 16 . The game machine frame 16 is composed of a front frame 18, an inner frame (not shown), and an outer frame (not shown) in order from the front side. The front frame 18 includes a handle 4, a batted ball supply tray (also referred to as an upper tray) 24, a surplus ball receiving tray (also referred to as a lower tray) 25, a production button 9, a production lever 6, a speaker 8, and a left side lamp. 23a and a right side lamp 23b.

The handle 4 is provided at the lower right side of the front frame 18, that is, at a position where a player playing a game facing the pachinko game machine 1 can hold it with the right hand. The handle 4 includes a touch switch 92 (FIG. 5), a firing lever 4a, and a firing stop button 4b. The touch switch 92 outputs a signal indicating that the player has touched the handle 4, and is arranged at a portion touched by the right hand of the player holding the handle 4. As shown in FIG. The shooting lever 4a is for adjusting the shooting strength of the game ball, and is rotatably provided on the handle 4. As shown in FIG. The shooting stop button 4b is for stopping the shooting of the game ball when the game ball is being shot, and is provided at a position that can be operated by the thumb of the right hand holding the handle 4.例文帳に追加A hitting ball supply plate (also referred to as an upper plate) 24 is provided on the lower center side of the front frame 18 . The batted ball supply tray 24 is for storing game balls to be supplied to the shooting device 90 (FIG. 5). The hit ball supply tray 24 stores game balls paid out from the rental ball payout device 80 (FIG. 5) and the prize ball payout device 400 (FIG. 5). A surplus ball receiving tray (also referred to as a lower tray) 25 is provided below the hitting ball supply tray 24 in the front frame 18 . The surplus ball receiving tray 25 stores game balls exceeding the number of game balls that can be stored in the batted ball supply tray 24. - 特許庁

The performance button 9 is provided in a portion of the front frame 18 that covers the upper side of the batted ball supply tray 24.例文帳に追加In other words, the effect button 9 is provided in the front frame 18 at a position where the player facing the pachinko game machine 1 can press it with the right hand or the left hand. In this embodiment, the effect button 9 is a push-on type button switch. The performance button 9 incorporates a performance button lamp 9c (FIG. 6) and a performance button vibration motor 9b (FIG. 6). The effect button lamp 9c lights up or blinks when the effect button 9 is pressed during the period when the effect button 9 is pressed. The surface of the effect button 9 is formed of a translucent material, and is devised so that the player can visually recognize the light emitted from the effect button lamp 9c. The production button vibrating motor 9b vibrates the production button 9, and vibrates at a predetermined timing during a period when the production button 9 is effectively pressed. In this embodiment, the effect button lamp 9c is an LED.
The performance button 9 has a built-in elastic member (not shown) such as a spring for returning the pressed performance button 9 to the position before the pressing operation, and the performance button 9 is released from the pressed state. Then, the state before the pressing operation is restored by the restoring force of the elastic member. When the player presses the performance button 9 during a period in which the pressing operation of the performance button 9 is valid, a specific performance is performed. Hereinafter, a specific effect triggered by the operation of the effect button 9 will be referred to as a button effect.

A production lever 6 is provided on the left side of the surplus ball receiving tray 25 in the front frame 18, that is, near the left end of the lower side of the front frame 18. - 特許庁In other words, the effect lever 6 is provided in the front frame 18 at a position where the player facing the pachinko game machine 1 can operate it with the left hand. That is, the effect lever 6 is provided in the front frame 18 at a position where the player facing the pachinko game machine 1 can operate it with the left hand, and the effect button 9 is positioned in the front frame 18 when the player moves with the left hand. It is provided at a position where it can be pressed with the right hand while the performance lever 6 is being operated by .
The performance lever 6 is formed in a bar shape that can be grasped with the left hand, and can be pushed backward in addition to the rotation operation of right rotation or left rotation. In addition, the production lever 6 is provided with a production lever vibration motor 6d (FIG. 6). The production lever vibration motor 6d is for vibrating the production lever 6, and vibrates at a predetermined timing in a period when the operation of the production lever 6 is valid. When the player operates the performance lever 6 during a period when the operation of the performance lever 6 is valid, a specific performance is performed. Hereinafter, a specific effect triggered by the operation of the effect lever 6 will be referred to as a lever effect.

A left side lamp 23a is provided on the left side of the front frame 18, and a right side lamp 23b is provided on the right side. The portion of the front frame 18 where the left side lamp 23a and the right side lamp 23b are provided is translucent, and a plurality of LEDs are arranged inside the translucent portion. Each LED is capable of emitting light in a plurality of colors, lights up or blinks according to the content of the presentation, and further changes the color of light emitted. The speakers 8 are provided in the upper left and right corners of the front frame 18, respectively, and output sounds such as music, sound effects, and notification sounds according to the content of the presentation.

Also, the pachinko game machine 1 includes a game board 2, a glass plate 5, an effect display device 7, and a rotating accessory 10. - 特許庁The game board 2 is arranged substantially in the center of the pachinko game machine 1, that is, at a position substantially facing the player's face. The performance display device 7 is arranged on the rear side of the game board 2, and its screen is exposed from substantially the center of the game board 2.例文帳に追加Also, the rotating accessory 10 is arranged below the effect display device 7 . The game board 2 includes a landing port 11, a start port 12, a general winning port 13, a big winning device 30, indicators 50 and rail members 17. - 特許庁

A game area 3 in which game balls flow down (roll) is formed on the board surface of the game board 2 . The game area 3 has a left game area 3 a formed on the left side of the screen of the effect display device 7 and a right game area 3 b formed on the right side of the screen of the effect display device 7 . A plurality of game nails (not shown) are driven into the board surface of the game board 2 for changing the flowing direction of the game ball. The front side of the board surface of the game board 2 is covered with a transparent glass plate 5. - 特許庁Also, although not shown in FIG. 1, LEDs are provided at a plurality of locations on the game board 2 . These LEDs are collectively referred to as board lamps (indicated by reference numeral 2a in FIG. 4). Each LED that constitutes the board lamp 2a can emit light in a plurality of colors, lights up or blinks according to the content of the effect, and further changes the color of the emitted light. That is, the pachinko game machine 1 lights or blinks the left side lamp 23a, the right side lamp 23b and the board lamp 2a according to the content of the effect during game control, and outputs sound from each speaker 8. - 特許庁

On the left side of substantially the center of the game board 2, there is a jumping hole 11 through which game balls flowing down the left game area 3a can win (enter) one by one. The entry hole 11 is always open, and the probability that the game ball enters the entry hole 11 does not substantially change. For example, it is designed so that about 1 out of 50 game balls flowing down the left game area 3a enters the jumping hole 11. As shown in FIG. A game ball entered from the entrance 11 is carried to a stage 15 in the center of the board surface through a passage 14.例文帳に追加
In the example shown in FIG. 1, the entrance 11 is arranged on the left side of the game area 3, but the position of the entrance 11 may be arranged on the right side or the upper side of the game area 3.

The rotating accessory 10 is installed on a stage 15 provided in the center of the board below the performance display device 7. - 特許庁FIG. 2 is a top view of the rotating accessory 10 viewed from above. As shown in FIG. 2, the rotary accessory 10 has a total of six ball entrances formed on the outer peripheral surface, and a rotary accessory drive motor 10a (FIG. 6) is built therein. While the power of the pachinko game machine 1 is on, the rotating accessory 10 rotates clockwise around the rotating shaft at a constant rotation speed, enters the ball from the entrance 11, and rolls on the stage 15. Distribute the game balls to one of the ball entrances. Of these six entrances, one entrance (hereafter referred to as winning entrance 21) is colored red and displays the characters "chance".

Then, as shown in FIG. 3, when the game balls rolling on the stage 15 are allotted to the winning ball entrance 21, the allotted game balls pass through the internal passages and finally fall below the rotating accessory 10. It will be carried to a certain starting port 12 and will win the starting port 12. - 特許庁That is, the winning ball entrance 21 serves as a prize winning opening for giving the chance of lottery of special symbols. On the other hand, when a game ball is distributed to a ball entrance other than the winning ball entrance 21 (hereinafter referred to as a losing ball entrance 22), the distributed game ball is carried to the out exit and basically there are no prize balls. . That is, the rotating accessory 10 serves as a lottery means for performing a mechanical (physical) lottery in the pachinko game machine 1 . In the examples shown in FIGS. 2 to 4, six ball entrances are formed in the rotating accessory 10, but the number of ball entrances can be changed as appropriate. Also, the ratio of the number of winning entrances 21 to all entrances can be changed as appropriate.

On the other hand, the big winning device 30 is arranged in the right game area 3 b of the game board 2 . The big prize winning device 30 includes an opening/closing member 31 that opens and closes the big prize opening 32 . The big winning opening 32 is formed in a size that allows a plurality of game balls to win (enter the ball). In this embodiment, the opening/closing member 31 is formed in a plate shape elongated in the left-right direction, and is configured to be rotatable about the left and right lower ends as the rotation axis.

The display device 50 is provided outside the game area 3 of the game board 2 and below the big winning device 30 . The display devices 50 include a special symbol display device 51 that variably displays special symbols (also called special symbols). Furthermore, the display devices 50 are also provided with a special symbol pending display 51a that displays the number of operations pending stored in the special symbol display 51.

In addition, when the game ball finally wins the starting port 12 through the rotary accessory 10, a big win determination (also called a big win lottery) for determining whether or not it is a big win is executed, and the special symbol display 51 fluctuates the special symbols. indicate. Then, the special symbol display device 51 confirms and displays the special symbol corresponding to the result of the big hit determination after a predetermined time has passed since the variable display of the special symbol is started. Here, when the fixed and displayed special pattern is a special pattern indicating a big win, a big win occurs, a big winning device 30 operates to open and close an opening/closing member 31, and a big winning port 32 opens and closes. When the game ball wins the prize at the starting port 12 while the special symbol display 51 is displaying the special symbols in a variable manner, the operation of the special symbol display 51 triggered by the winning is suspended, and the number of suspensions of the operation is determined. is displayed by the special figure reservation display 51a. Hereinafter, the memory number of operation suspension of the special symbol display device 51 is referred to as a special symbol suspension number.

Hereinafter, the period from when the special symbol display device starts the variable display of the special symbols to when the special symbols are fixedly displayed is referred to as one variation of the special symbols. In addition, the fact that the special figure reservation number decreases by one each time the special symbol is changed once is called digestion of the special figure reservation number. Also, the period required from the opening of the large winning slot until it closes is called the opening period of the large winning slot, and the period from the opening of the large winning slot to the next opening is called the round. Also, a game from the start of the first round to the end of the final round is called a jackpot game. Also, when it is determined as a big win in the big win determination, the type of the big win is determined by lottery. Depending on the type of jackpot, the opening period of the jackpot, the maximum number of executable rounds, etc. differ.

The general winning opening 13 is arranged at a predetermined position on the game board 2 . The rail member 17 is arranged along the circumference of the game board 2 . The rail member 17 guides the game ball shot by the shooting device 90 ( FIG. 5 ) to the game area 3 . At the bottom center of the game board 2, an out port 19 for discharging game balls that have not won anywhere is opened.

The effect display device 7 displays moving images and still images such as effect images, message images, and demonstration images. The player plays the game while looking at those images from the front of the pachinko game machine 1.例文帳に追加A performance display device 7 variably displays a performance (decorative) pattern as a performance image in synchronization with the variable display of the special pattern. In this embodiment, the production pattern is a pattern representing Arabic numerals 1-10. Note that the performance symbols may include symbols representing things other than numbers, such as alphabets and special characters, and may be combined with symbols representing things other than numbers. In this embodiment, a left effect symbol display area, a middle effect symbol display area, and a right effect symbol display area are set in order from the left as areas in which the effect display device 7 variably displays the effect symbols. A left performance symbol 9L is variably displayed in the left performance symbol display area, a middle performance symbol 9C is variably displayed in the medium performance symbol display area, and a right performance symbol 9R is variably displayed in the right performance symbol display area. Hereinafter, when describing items common to the left effect symbol display area, the middle effect symbol display area and the right effect symbol display area, they are simply referred to as the effect symbol display area.

In this embodiment, the main variation pattern (variation mode) of each effect pattern is a variation pattern that moves from the top to the bottom of the screen so that the numbers represented by the effect symbols are in ascending order, that is, a variation pattern that scrolls in the vertical direction. is. As a variation pattern, it is possible to use a horizontal scroll method in which the effect pattern moves from one side of the screen to the other, or a method in which the effect pattern is displayed at the same display position in ascending numerical order. In addition, the effect display device 7 displays a background image as the effect image in the background of each effect pattern. For example, the background image is a moving image such as a TV drama or a movie, a moving image obtained by converting the moving image into animation, an animation, or an original moving image of a pachinko machine manufacturer. In this embodiment, the effect display device 7 is a liquid crystal display device. As the effect display device 7, an organic EL display device, a display device using a dot matrix LED, or the like can be used.
A performance display device 7 variably displays each performance design in synchronism with the variable display of the special design, determines and displays each performance design at the same time as the special design is determined and displayed, and displays the big win determination result. Here, the fixed display means a stop display state in which the production pattern is completely stopped without fluctuating up and down or fluctuating again.

Hereinafter, the performance pattern indicating that the result of the big hit determination is a big hit is called a big hit performance pattern, and the performance pattern that shows that the result of the big hit determination is a loss is called a loss performance pattern. In the present embodiment, the jackpot effect pattern is a state in which each effect pattern is aligned with the effect patterns representing the same number, that is, a state of so-called double eyes. For example, as shown in FIG. 1, the confirmed displayed left effect symbol 9L, middle effect symbol 9C and right effect symbol 9R are all set to "7". In addition, the lost performance pattern is a state in which the performance symbols representing the same number are not aligned, that is, the pattern is not in a grid pattern. For example, the confirmed and displayed left effect symbol 9L is "7", the middle effect symbol 9C is "6", and the right effect symbol 9R is "7".
Hereinafter, the production pattern displayed by the production display device 7 synchronously with the special pattern is referred to as a production design variation pattern, and the image displayed in the background of the production design variation pattern is referred to as a background image. A background image is a still image or a moving image.

The performance symbol variation pattern is variably displayed in synchronism with the variation display of the special symbol variation pattern, and when the suspension of the operation of the special symbol display device occurs, the operation of the performance display device 7 is also suspended. That is, the number of pending operations of the special symbol display and the number of pending operations of the effect display device 7 are the same. In addition, the operation pending number of the effect display device 7 corresponding to the special figure pending number is displayed on the effect display device 7 by the pending image. Therefore, by counting the number of pending images displayed on the effect display device 7, the player can know the number of reserved special symbols, and the number of pending operations of the effect display device 7 due to the number of reserved special symbols. can know. Incidentally, the number of pending operations of the effect display device 7 may not be displayed on the effect display device 7 but may be notified to the player using a lamp or the like around the effect display device 7 .

In addition, in the pachinko game machine 1, in addition to the notification of the result of the jackpot determination by the above-mentioned performance symbols, the background image displayed on the performance display device 7, the sound output from the speaker 8, the lighting of the board lamp 2a, the accessories The result of the big hit determination is notified by using a combination of motions and the like. Specifically, various effects such as advance notice effects and ready-to-win effects are applicable.

[Main electrical configuration of pachinko machine]
Next, the main electrical configuration of the pachinko game machine 1 will be described with reference to FIGS. 5 and 6. FIG.
The pachinko game machine 1 includes a main control board 60 (FIG. 5), a payout control board 73 (FIG. 5), a sub control board 100 (FIG. 6), an image control board 200 (FIG. 6), and a lamp control board 79. (FIG. 6) and an audio control board 78 (FIG. 6).

As shown in FIG. 5, on the main control board 60, a game control one-chip microcomputer (hereinafter referred to as a game control microcomputer) 61 is mounted. The game control microcomputer 61 includes a CPU 62 , a ROM 63 , a RAM 64 and an input/output circuit 65 . The CPU 62 executes detection of prize winning, determination of a big hit, updating of various random numbers, and the like. Various tables such as a computer program executed by the CPU 62, a jackpot determination table Ta1, a jackpot type determination table Ta2, a reach determination table Ta3, and a special figure variation pattern selection table Ta4 are stored in the ROM 63. The game control microcomputer 61 generates random numbers used in various determinations (lottery), such as jackpot random numbers, jackpot type random numbers, reach random numbers, and variation pattern random numbers.

RAM 64 is used as a work memory or the like when CPU 62 executes a computer program. Also, the RAM 64 is provided with a special figure reservation storage unit 64a. In the special figure reservation storage unit 64a, the jackpot random number, jackpot type random number, reach random number and variation pattern random number acquired by the game control microcomputer 61 due to the game ball winning the starting port 12 (FIG. 1) are stored. be done. When the game ball wins in the starting port 12 (FIG. 1) while the special symbol display device 51 is displaying the special symbols in a variable manner, the variable display of the special symbols resulting from the winning is temporarily suspended (operation suspended). , The jackpot random numbers and the like obtained due to the winning are stored in the special figure reservation storage unit 64a.

A RAM clear switch 66 is mounted on the main control board 60 . The pachinko game machine 1 initializes the RAM 64 and the RAM 120 ( FIG. 6 ) of the sub-control board 100 when started with the RAM clear switch 66 pressed. Also, the display devices 50 are electrically connected to the main control board 60 . Further, the main control board 60 has a starting sensor 12a, a big winning sensor 32a, a general winning sensor 13a, a winning ball sensor 21a, and a losing ball sensor 22a via a relay board 74. , the rotary accessory drive motor 10a and the big winning opening solenoid 30a are electrically connected.

The starting hole sensor 12a is provided directly under the starting hole 12 (FIG. 1), and outputs a signal to the main control board 60 indicating that the game ball has entered the starting hole 12. The big winning hole sensor 32a is provided directly under the big winning hole 32 (FIG. 1), and outputs to the main control board 60 a signal indicating that the game ball has entered the big winning hole 32. The general winning hole sensor 13a is provided directly under the general winning hole 13 (FIG. 1), and outputs a signal to the main control board 60 indicating that the game ball has entered the general winning hole 13. The winning ball entrance sensor 21a is provided immediately below the winning ball entrance 21 among the ball entrances arranged in the rotary accessory 10, and indicates that the game ball has entered the winning ball entrance 21. A signal is output to the main control board 60 . The lost ball entrance sensor 22a is provided immediately below the lost ball entrance 22 among the ball entrances arranged in the rotating accessory 10, and indicates that the game ball has entered the lost ball entrance 22. A signal is output to the main control board 60 .

The rotating accessory driving motor 10a rotates the rotating accessory 10 around the rotation axis. The big winning opening solenoid 30a drives the opening/closing member 31 (FIG. 1) of the big winning device 30 to open and close.
Also, the main control board 60 is electrically connected to the ball rental device 80 , the card unit 76 and the prize ball delivery device 400 via the payout control board 73 . The card unit 76 is provided adjacent to the pachinko game machine 1, and reads and writes the balance on the prepaid card. The rental ball dispensing device 80 includes a ball rental motor 81 and a ball rental sensor 82 . A ball lending motor 81 drives a member for putting out a game ball as a lending ball, and a ball lending sensor 82 sends a signal indicating that a game ball has been paid out by the member through a payout control board 73 to the main control board. 60. The game control microcomputer 61 counts the number of rental balls paid out by the rental ball payout device 80 based on the signal output from the payout control board 73 . When a ball lending button (not shown) is operated when the prepaid card inserted in the card unit 76 has a balance recorded that is equal to or greater than the minimum balance that can be paid out, the ball lending device 80 operates, A minimum unit number of rented balls is dispensed to the batted ball supply tray 24 .

The prize ball dispensing device 400 includes a prize ball motor 401 and a prize ball sensor 402 . A prize ball motor 401 drives a member that pays out game balls as prize balls, and a prize ball sensor 402 outputs a signal indicating that a game ball has been paid out by the member through a payout control board 73 to the main control board. 60. The game control microcomputer 61 counts the number of prize balls paid out by the prize ball payout device 400 based on the signal output from the payout control board 73 .
A launching device 90 is electrically connected to the main control board 60 via a launching control circuit 75 . Firing device 90 comprises firing motor 91 , touch switch 92 and firing volume 93 . The shooting motor 91 drives a hitting mallet (not shown) that hits and shoots game balls. The touch switch 92 outputs a signal indicating that the player has touched the handle 4 . The shooting volume 93 adjusts the strength with which the hitting hammer strikes the game ball according to the amount of rotation of the shooting lever 4a (FIG. 1).

The pachinko game machine 1 also includes a power board 70 . The power board 70 supplies power to the main control board 60 and the payout control board 73 . Also, the power supply board 70 supplies power via the payout control board 73 to each device electrically connected to the payout control board 73 . Also, the power supply board 70 supplies power from the main control board 60 through the relay board 74 to each sensor and solenoid electrically connected to the relay board 74 . Also, the power supply board 70 supplies power through the main control board 60 to the displays 50 electrically connected to the main control board 60 .
A backup power supply circuit 71 is provided on the power supply board 70 . The backup power supply circuit 71 supplies power necessary for holding information to the RAM 64 of the main control board 60 and the like when power is not supplied to the pachinko gaming machine 1 from the outside. A power switch 72 is electrically connected to the power board 70 for turning on and off a main power supply that supplies power to the power board 70 .

The main control board 60 transmits various commands to the sub control board 100 (FIG. 6). The main control board 60 can send commands to the sub control board 100 , but the sub control board 100 cannot send commands to the main control board 60 . In other words, the communication between the main control board 60 and the sub-control board 100 is unidirectional communication in which only transmission from the main control board 60 to the sub-control board 100 is possible.

As shown in FIG. 6, the sub-control board 100 is mounted with a one-chip microcomputer for controlling effects (hereinafter referred to as a microcomputer for controlling effects) 101 . The effect control microcomputer 101 includes a CPU 102 , a ROM 110 , a RAM 120 and an input/output circuit 103 . The CPU 102 controls an effect along with the game. The ROM 110 stores a computer program for the CPU 102 to control effects, as well as various tables such as the effect selection table Ta5. RAM 120 is used as a work memory when CPU 102 executes a computer program. Further, the RAM 120 is provided with a special figure holding effect storage unit 121, a variation effect storage unit 123, and a distribution history storage unit 124. - 特許庁In addition, the microcomputer 101 for production|presentation control is an example of the control means of this invention.

The special figure reservation effect storage unit 121 stores the start winning command output from the main control board 60 and the like. The start winning command is a command including a jackpot random number, a jackpot type random number, a fluctuation pattern random number and a reach random number obtained by the game control microcomputer 61 when the game ball has entered the starting port 12.
The variable effect storage unit 123 stores a start winning command used for the variation of the variable effect pattern.
The distribution history storage unit 124 stores past distribution results of game balls by the rotating accessory 10 . Specifically, as shown in FIG. 7, whether the game ball was distributed to the winning ball entrance 21 or the losing ball entrance 22 in the rotating accessory 10 during a predetermined period of time (for example, one month) in the past is indicated together with the date and time of occurrence. Memorize each time. It should be noted that whether the game ball is distributed to the winning ball entrance 21 or the losing ball entrance 22 can be grasped from the detection results of the winning ball entrance sensor 21a and the losing ball entrance sensor 22a as described above. The distribution result is transmitted from the main control board 60 to the sub-control board 100 as appropriate.
The input/output circuit 103 transmits data to or receives data from each board connected to the sub-control board 100 .

An image control board 200 is electrically connected to the sub-control board 100 . The image control board 200 includes an image control CPU 202, a VDP 201 (Video Display Processor), a control ROM 203, a control RAM 204, a CGROM (Character Generator Read Only Memory) 205, and a VRAM (Video Random Access Memory) 206. and are implemented. The image control CPU 202 controls the effect display device 7 to display effect images such as a variable effect pattern, a button effect image, a lever effect image and a notice image. The control ROM 203 stores a computer program for the image control CPU 202 to control the effect display device 7 . The control RAM 204 is used as a work memory when the image control CPU 202 executes computer programs. The CGROM 205 stores image data for the effect display device 7 to display effect images. The VDP 201 reads image data from the CGROM 205 according to the display list created by the image control CPU 202 and develops the read image data in the development area in the VRAM 206 . The VDP 201 synthesizes the image data developed in the VRAM 206 and stores the synthesized image data in the frame buffer in the VRAM 206 . The VDP 201 converts the image data stored in the frame buffer in the VRAM 206 into RGB signals and outputs them to the effect display device 7 . Thereby, the effect display device 7 displays the effect image. The CGROM 205 is an example of the effect storage means of the present invention.

The sub-control board 100 is electrically connected to the left side lamp 23a, the right side lamp 23b, and the board lamp 2a via the lamp control board 79. As shown in FIG. The effect control microcomputer 101 uses data stored in the ROM 110 to create light emission pattern data that determines the light emission mode of each lamp, and transmits the light emission pattern data to the lamp control board 79 . Then, the lamp control board 79 performs light emission control of each lamp according to the received light emission pattern data. The left side lamp 23a, the right side lamp 23b, the board lamp 2a, the effect button lamp, and the lamp control board 79 are examples of the effect means of the present invention.

Each speaker 8 is electrically connected to the sub-control board 100 via the audio control board 78 . The audio control board 78 is equipped with an audio control CPU (not shown), an audio data ROM (not shown), an audio synthesizing circuit (not shown), and an amplifier (not shown). . The audio data ROM stores audio data for each speaker 8 to output sounds such as music and sound effects. The voice control CPU reads voice data from the voice data ROM based on the command received from the sub-control board 100, and outputs the read voice data to the voice synthesizing circuit. The speech synthesizing circuit synthesizes the input speech data, converts the synthesized synthesized speech data into an analog speech signal, and outputs the analog speech signal to the amplifier. The amplifier amplifies the input audio signal and outputs it to each speaker 8 . Each speaker 8 outputs a sound indicated by the input audio signal.

Also, the sub-control board 100 is electrically connected to the production button detection switch 9a, the production lever push detection switch 6g, the production lever rotation detection switch 6h, the production button vibration motor 9b, and the production lever vibration motor 6d. It is The production button detection switch 9a outputs a signal indicating that the production button 9 has been pressed to the sub-control board 100, and the production control microcomputer 101 performs button production based on the signal input from the production button detection switch 9a. to run. The production lever push-in detection switch 6g outputs a signal indicating that the production lever 6 has been pushed in to the sub-control board 100, and the production control microcomputer 101, based on the signal input from the production lever push-in detection switch 6g, A lever performance performed when a performance lever 6 is pushed is executed. The effect lever rotation detection switch 6h outputs a signal indicating that the effect lever 6 has been rotated to the sub-control board 100, and the effect control microcomputer 101, based on the signal input from the effect lever rotation detection switch 6h, A lever performance performed when a performance lever 6 is rotated is executed.

The production button vibration motor 9b is a member for vibrating the production button 9 and is housed inside the production button 9. - 特許庁The effect lever vibration motor 6d is a member that vibrates the effect lever 6, and is provided in a portion that contacts the effect lever 6 or inside the effect lever 6. The ROM 110 stores motion pattern data for determining the motion pattern of the performance button vibration motor 9b and motion pattern data for determining the motion pattern of the performance lever vibration motor 6d. A performance control microcomputer 101 reads operation pattern data from a ROM 110 when the performance timing for vibrating the performance button 9 comes, and drives and controls a performance button vibration motor 9b based on the read operation pattern data. In addition, the performance control microcomputer 101 reads the operation pattern data from the ROM 110 when the performance timing for vibrating the performance lever 6 comes, and drives and controls the performance lever vibration motor 6d based on the read operation pattern data.

[Processing of game control microcomputer 61]
Next, referring to FIG. 8, an abnormality detection process executed by the effect control microcomputer 101 (FIG. 6) will be described. The abnormality detection process is executed at predetermined time intervals (for example, every hour) while the power of the pachinko game machine 1 is on, and is a process of detecting an abnormality in the distribution result of the rotating accessory 10 . More specifically, whether or not there is an abnormality in the winning probability, which is the probability of a ball entering the winning ball entrance 21 from among a total of six ball entrances provided in the rotating accessory 10 during the past game. to detect Incidentally, the performance control microcomputer 101 also executes processing related to the game of the pachinko gaming machine 1 (for example, display of performance images associated with variations in special symbols) in parallel with the abnormality detection processing described below.

First, the effect control microcomputer 101 detects whether or not there is an abnormality in the winning probability of the rotating accessory 10 from the first viewpoint in S1. From the first point of view, as described later, the confidence interval of the winning probability is calculated from the distribution results for the most recent predetermined number of times, and the abnormality is determined depending on whether the confidence interval includes the winning probability assumed by the hall side or the manufacturer side. detect. Details will be described later.

Next, the effect control microcomputer 101 detects whether or not there is an abnormality in the winning probability of the rotating accessory 10 from the second viewpoint in S2. From the second point of view, as will be described later, the number of times the ball has entered the winning entrance 21 consecutively is calculated from the result of distribution for the latest predetermined number of times, and the abnormality is detected based on the number of times. Details will be described later.

After that, in S3, the effect control microcomputer 101 detects an abnormality in the winning probability of the rotating role object 10 based on the detection result of the abnormality in the winning probability of the rotating role object 10 from the first viewpoint and the second viewpoint. A final judgment is made as to whether or not For example, when it is detected that an abnormality has occurred in at least one of the first viewpoint and the second viewpoint, it may be finally determined that there is an abnormality in the prize winning probability of the rotating accessory 10. Only when it is detected that an abnormality has occurred in both the first viewpoint and the second viewpoint, it is possible to make a final determination that the prize winning probability of the rotating accessory 10 is abnormal.

In addition, as will be described later, the degree of abnormality is also determined in the detection of abnormality from the first viewpoint and the second viewpoint. determined in stages. Therefore, when it is determined as "abnormality" with the highest degree of abnormality from both the first viewpoint and the second viewpoint, it may be finally determined that there is an abnormality in the winning probability of the rotating accessory 10. , it may be finally determined that there is an abnormality in the prize winning probability of the rotating accessory 10 when it is determined to be "warning" or higher or "caution" or higher from both the first and second viewpoints.

Then, when the production control microcomputer 101 finally determines that there is an abnormality in the winning probability of the rotating accessory 10, it performs various processes to issue a warning to that effect (S4). For example, the effect display device 7 temporarily interrupts the game to display a sentence indicating that an abnormality has occurred, or outputs a voice or sound for notifying the abnormality from the speaker 8 . It is also possible to output a signal indicating that an abnormality has occurred to the server of the hall in which the pachinko gaming machine 1 is installed.

In addition, the content of the warning issued in S4 is also carried out in consideration of the degree of abnormality determined from the first viewpoint and the second viewpoint (three levels of "abnormal", "warning", and "caution"). is desirable. That is, the higher the degree of anomaly, the more it is desirable to give a stronger warning to the anomaly. For example, when it is judged as "abnormal" with the highest degree of abnormality from both the first viewpoint and the second viewpoint, a signal is sent to the server in the hall and the game is interrupted at the game table to warn. outputs images and sounds from the On the other hand, except for the case where it is determined as "abnormal" from both the first viewpoint and the second viewpoint (for example, "abnormal" from the first viewpoint and "caution" from the second viewpoint), the hall server It is also possible to send only a signal to the player and not issue a warning on the gaming machine.

[Detection processing from the first viewpoint]
Next, referring to FIG. 9, the process of detecting an abnormality in the prize winning probability of the rotating accessory 10 from the first viewpoint, which is executed by the effect control microcomputer 101 in S1, will be described.

First, in S11, the effect control microcomputer 101 reads out the last N distribution histories from the distribution history storage unit 124 stored in the RAM120. Note that N is 30, for example, but the numerical value can be changed as appropriate. However, if N is too small, the possibility of false detection increases, and on the other hand, if N is too large, it becomes difficult to detect recent fraudulent actions, so it is important to set an appropriate value. desirable. Incidentally, at S11, the allocation history after the player who is currently playing the game started playing the game, or the allocation history after the power was turned on last time may be read out. As shown in FIG. 7, the distribution history storage unit 124 stores the past distribution result of the rotating accessory 10, that is, whether the game ball is distributed to the winning ball entrance 21 or the losing ball entrance 22 in the rotating accessory 10. It is remembered about Taka.

Next, in S12, the effect control microcomputer 101, based on the distribution history read out in S11, in the distribution for the latest N times, the game ball is placed in the plurality of ball entrances provided in the rotating accessory 10, A probability (hereinafter referred to as winning probability) P of entering the winning ball entrance 21 is calculated. For example, if N=30 times and the number of times the ball enters the winning ball entrance 21 is 4 times, the winning probability P is 4/30.

After that, in S13, the effect control microcomputer 101 calculates the confidence interval of the winning probability of the rotary accessory 10 of the pachinko game machine 1 based on the winning probability P for the latest N times calculated in S12. Confidence intervals are calculated for three types of confidence levels, 95%, 97%, and 99%.

For example, a confidence interval with a confidence level of 95% is calculated by the following formula (1).
Lower bound of confidence interval = P-1.96 x √(P(1-P))/√N
Upper limit of confidence interval = P + 1.96 × √ (P (1 - P)) / √ N (1)
Note that the higher the confidence level, the wider the confidence interval.

Next, in S14, the effect control microcomputer 101 puts the winning probability (true winning probability) assumed by the hall side or the manufacturer side within the 99% confidence interval with the highest confidence level among the confidence intervals calculated in S13. is included. In addition, the winning probability assumed by the hall side or the manufacturer side is, for example, if it is assumed that each ball entrance of the rotating role object 10 has the same shape, "the number of winning ball entrances for the number of ball entrances of the rotating role object 10 21 number ratio”. For example, if there is one winning ball entrance 21 for six ball entrances, the number is 1/6. However, even if each ball entrance of the rotating role object 10 has the same shape, depending on the molding accuracy of the role object, the installation angle of the table, etc., it is not always possible to determine the number of winning ball entrances for the number of ball entrances of the rotating role object 10. There are cases where the ratio of the number of ”=“probability of winning as assumed by the hall or manufacturer” may not be met, and the probability of winning assumed by the hall or manufacturer will be determined by the manufacturer or hall after a sufficient number of trials in advance. It may be a winning probability actually calculated based on the above.

If it is determined that the "winning probability assumed by the hall or manufacturer" is not included in the 99% confidence interval (S14: YES), the true winning probability should be included in the 99% probability. is not included in the confidence interval, there is a strong suspicion that there is an anomaly in the most recent N allocations used to calculate the confidence interval. Therefore, it is detected that there is an abnormality in the prize winning probability of the rotating accessory 10, and the degree of abnormality is determined to be "abnormal" (S15). After that, the process proceeds to S2.

On the other hand, if the ``winning probability assumed by the hall side or the manufacturer side'' is included in the 99% confidence interval, then the next highest confidence level is within the 97% confidence interval ``the probability assumed by the hall side or the manufacturer side''. It is determined whether or not the "winning probability" is included (S16).

If it is determined that the "winning probability assumed by the hall or manufacturer" is not included in the 97% confidence interval (S16: YES), the true winning probability should be included in the 97% probability. is not included in the confidence interval, it is suspected that the most recent N allocations used to calculate the confidence interval are abnormal. Therefore, it is detected that there is an abnormality in the prize winning probability of the rotating accessory 10, and the degree of abnormality is judged to be "warning", which is the second highest (S17). After that, the process proceeds to S2.

In addition, if the ``winning probability assumed by the hall or manufacturer'' is included in the 97% confidence interval, then the ``winning probability assumed by the hall or manufacturer'' is included in the 95% confidence interval. is included (S18).

If it is determined that the "winning probability assumed by the hall or manufacturer" is not included in the 95% confidence interval (S16: YES), the true winning probability should be included in the 95% probability. is not included in the confidence interval. Therefore, it is detected that there is an abnormality in the prize winning probability of the rotating accessory 10, and the degree of abnormality is determined to be "Caution" (S19). After that, the process proceeds to S2.

If it is determined that the "winning probability assumed by the hall side or the manufacturer side" is included in the 95% confidence interval, it is determined that there is no abnormality in the winning probability of the rotating accessory 10 (S20). After that, the process proceeds to S2.

[Detection processing from second viewpoint]
Next, referring to FIG. 10, the processing for detecting an abnormality in the prize winning probability of the rotating accessory 10 from the second viewpoint, which is executed by the effect control microcomputer 101 in S2, will be described.

First, in S21, the effect control microcomputer 101 reads the last 30 distribution histories from the distribution history storage unit 124 stored in the RAM 120. FIG. Note that the distribution history to be read out may target a larger number of times. Further, at S21, the distribution history after the current player started playing the game or the distribution history after the power was turned on last time may be read.

Next, in S22, the effect control microcomputer 101, based on the distribution history read out in S21, in the most recent 30 distributions, the game ball is placed in the plurality of ball entrances provided in the rotating accessory 10. The maximum number of times the ball has entered the winning ball entrance 21 continuously (hereinafter referred to as the number of consecutive wins) is calculated.

Next, in S23, the effect control microcomputer 101 determines whether or not the number of consecutive wins calculated in S22 is 18 or more.

When it is determined that the number of consecutive wins calculated in S22 is 18 or more (S23: YES), an extremely large number of consecutive winning balls enter the winning ball entrance 21, which should be entered at a rate of about 1/6. Since he has entered the ball, there is a strong suspicion that there is something wrong with the most recent 30 distributions. Therefore, it is detected that there is an abnormality in the prize winning probability of the rotating accessory 10, and the degree of abnormality is determined to be "abnormal" (S24). After that, the process proceeds to S3.

On the other hand, if the number of consecutive wins calculated in S22 is less than 18, then it is determined whether or not the number of consecutive wins is 12 or more (S25).

When it is determined that the number of consecutive wins calculated in S22 is 12 or more (S25: YES), a large number of consecutive winning balls enter the winning entrance 21, which should be entered at a rate of about 1/6. Since the ball is being played, it is suspected that there is something wrong with the most recent 30 distributions. Therefore, it is detected that there is an abnormality in the prize winning probability of the rotating accessory 10, and the degree of abnormality is judged to be "warning", which is the second highest (S26). After that, the process proceeds to S3.

Further, when the number of consecutive winnings calculated in S22 is less than 12, it is further determined whether or not the number of consecutive winnings is 6 or more (S27).

If it is determined that the number of consecutive wins calculated in S22 is 6 or more (S27: YES), the ball is continuously entered into the winning ball entrance 21, which should be entered at a rate of about 1/6. Therefore, there is a slight suspicion that there is something wrong with the most recent 30 distributions. Therefore, it is detected that there is an abnormality in the prize winning probability of the rotating role object 10, and the degree of abnormality is determined to be "caution" (S28). After that, the process proceeds to S3.

Incidentally, when it is determined that the number of consecutive wins calculated in S22 is less than 6 times, it is determined that there is no abnormality in the winning probability of the rotating accessory 10 (S29). After that, the process proceeds to S3.

In the abnormality detection process described above, an abnormality in the prize winning probability of the rotating accessory 10 is detected using two conditions, the first viewpoint (FIG. 9) and the second viewpoint (FIG. 10). Factors that cause an abnormality in the winning probability include, for example, situations in which a player should bring a magnet close to control the movement of a game ball, shake the game table, or change the inclination of the game table. If there is an act to win a prize for something that was there (so-called cheating), or due to unexpected matters on the manufacturer's side such as defective molding of parts, there is a game machine (defective machine) that is easier or harder to win than it should be. may have been born.

In the present embodiment, an abnormality in the winning probability of the rotating accessory 10 is detected using two conditions. Therefore, even if an abnormality in the winning probability cannot be detected under one condition, an abnormality in the winning probability is detected under the other condition. can be detected. In addition, if an abnormality is detected under multiple conditions as a condition for finally determining that an abnormality has occurred, even if there is an accidental bias in the winning of prizes, it will not be determined as an abnormality. It becomes possible to detect defective units more accurately.

[Effects of Embodiment]
(1) If the pachinko gaming machine 1 of the above-described embodiment is implemented, a flow-down region where game balls flow down, and a plurality of ball-entry ports provided in the flow-down region where game balls enter, and a rotating shaft and a rotating accessory that distributes game balls to any one of the ball entrances, wherein part of the plurality of ball entrances is provided with a prize winning opening for awarding a privilege to the player storage means for storing the result of allocating the game balls of the rotating accessory that occurred during a past game; Abnormality detection means for detecting, using a plurality of different conditions, whether or not there is an abnormality in the winning probability, which is the probability of a ball entering the winning opening from the inside of the mouth. As a result, in a game machine having a rotating accessory as a lottery means, it is possible to detect anomalies in the winning probability using a plurality of different conditions, thereby detecting cheating and bad machines more accurately than before. becomes.
(2) In addition, the abnormality detection means, as one of the conditions included in the plurality of different conditions, based on the game ball allocation results stored in the storage means, for a predetermined number of past allocations The winning probability of the game ball entering the winning hole is calculated by calculating the winning probability of the game ball entering the winning hole, the confidence interval is calculated from the winning probability for the past predetermined number of allocations, and the winning probability assumed by the hall side does not exist within the calculated confidence interval It is detected that there is an abnormality in the winning probability. As a result, it is possible to detect whether or not there is an abnormality in the winning probability based on whether or not the winning probability assumed by the hall side exists in the confidence interval calculated from the extracted past winning probability.
(3) In addition, the abnormality detection means calculates confidence intervals of a plurality of different confidence levels, and determines whether or not the winning probability assumed by the hall side exists within the confidence intervals for the plurality of different confidence levels. However, the higher the confidence level of the nonexistent confidence interval, the stronger the warning against anomalies. As a result, it is possible to give a strong warning when an abnormality is strongly suspected based on the confidence level of the confidence interval determined that the winning probability assumed by the hall side does not exist.
(4) In addition, the abnormality detection means detects, as one of the conditions included in the plurality of different conditions, based on the result of distribution of the game balls stored by the storage means that game balls are continuously placed in the winning opening. The number of consecutive wins, which is the number of times the ball is hit, is calculated, and when the number of consecutive wins exceeds a predetermined number, it is detected that there is an abnormality in the probability of winning. As a result, it is possible to detect whether or not there is an abnormality in the winning probability based on the number of consecutive winnings in the past.
(5) Further, the abnormality detection means is characterized in that the greater the predetermined number of times, the stronger the warning against the abnormality. As a result, it is possible to issue a strong warning when the number of consecutive wins is particularly high and an abnormality is strongly suspected.
(6) Further, the abnormality detection means is characterized in that, when it detects that the winning probability is abnormal under at least one of the plurality of conditions, it issues a warning to the abnormality. As a result, it becomes possible to verify abnormalities in the winning probability from various aspects, and compared to the past, it is possible to avoid overlooking cheating and bad machines.
(7) Further, the abnormality detection means is characterized in that, when an abnormality in the winning probability is detected under all of the plurality of conditions, a warning is issued to the abnormality. It is possible to verify the abnormality of the winning probability from various aspects, and it is possible to improve the detection accuracy of the cheating and the defective table compared to the conventional method.

<Other embodiments>
(1) In the above-described embodiment, it is the sub-control board 100 that detects an abnormality in the prize winning probability of the rotating accessory 10, but the main control board 60 may be used. Further, the detection may be performed in the server on the hall side.
(2) In addition, in the above-described embodiment, an abnormality in the prize winning probability of the rotating accessory 10 is detected using two conditions, the first viewpoint and the second viewpoint. An abnormality in the prize winning probability of the rotating accessory 10 may be detected.
(3) In addition, in the above-described embodiment, it is detected whether or not there is an abnormality in the winning probability, which is the probability that the game ball enters the winning ball entrance 21 from the ball entrance of the rotary accessory 10. However, conversely, it may be detected whether or not there is an abnormality in the probability of a ball entering the losing ball entrance 22 .
(4) In addition, in the above-described embodiment, an example of application to one type of pachinko machine is shown, but application to two types of pachinko machines is also possible. In that case, it is possible to use the winning ball entrance 21 of the rotating accessory 10 as the V winning area.

1 pachinko game machine 2a board lamp 7 effect display device 8 speaker 10 rotating accessory 11 entrance 14 passage 21 winning ball entrance 22 losing ball entrance 23a left side lamp 23b right side lamp 78 voice control board 79 lamp control board 101 production Control microcomputer 124 Distribution history storage unit

Claims (7)

a downflow area where the game ball flows down;
a rotating accessory that is provided in the flow-down area, is provided with a plurality of ball entrances into which game balls enter, rotates around a rotation axis, and distributes game balls to any of the ball entrances. and
including a winning opening for awarding a privilege to a player as part of the plurality of ball entrances;
a storage means for storing the results of allocating the game balls of the rotating accessory that occurred during the past game;
With respect to the results of allocating the game balls stored by the storage means, whether or not there is an abnormality in the winning probability, which is the probability that the game ball enters the winning hole from among the plurality of ball entering holes, is determined differently. and abnormality detection means for detecting using a plurality of conditions. The abnormality detection means is
As one of the conditions included in the plurality of different conditions,
calculating a winning probability of a game ball entering the winning hole for a predetermined number of past allocations based on the results of game ball allocation stored by the storage means;
Calculate the confidence interval from the winning probability for the past predetermined number of allocations,
2. The gaming machine according to claim 1, wherein when the winning probability assumed by the hall side does not exist within the calculated confidence interval, it is detected that there is an abnormality in the winning probability. The abnormality detection means is
Compute confidence intervals for several different confidence levels,
Determining whether or not the winning probability assumed by the hall side exists within the confidence interval for a plurality of different confidence levels,
3. The game machine according to claim 2, wherein the higher the confidence level of the non-existent confidence interval, the stronger the warning against the abnormality. The abnormality detection means is
As one of the conditions included in the plurality of different conditions,
calculating the number of consecutive winnings, which is the number of times the game balls have entered the winning opening in succession, based on the results of the distribution of the game balls stored by the storage means;
2. The gaming machine according to claim 1, wherein it is detected that there is an abnormality in the probability of winning when the number of consecutive wins exceeds a predetermined number. 5. The game machine according to claim 4, wherein the abnormality detecting means issues a stronger warning against the abnormality as the predetermined number of times increases. 6. When the abnormality detecting means detects that the winning probability is abnormal under at least one condition among the plurality of conditions, it warns against the abnormality. The gaming machine according to any one of the above. 6. The gaming machine according to any one of claims 1 to 5, wherein said abnormality detection means issues a warning to an abnormality when an abnormality in winning probability is detected under all of said plurality of conditions.

Images