JP7158719B2 - game machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a game machine (pachinko machine) in which games are played by shooting game balls toward a game area formed on a game board.

In a gaming machine in which a game is played by shooting game balls toward a game area formed on a game board, the game area is generally provided with a plurality of winning holes, and game balls are delivered to the winning holes. A prize ball is given to the player by detecting the incoming ball. Further, based on the entry of the game ball into a predetermined winning opening (starting opening), the identification information (for example, special symbols) is displayed variably, and when the identification information is stopped and displayed in a specific manner, the variable type A specific game (jackpot game) in which a specific winning opening (big winning opening) is in a state in which it is impossible to enter a ball is in a state in which it is possible to enter a ball is widespread.

In such a game machine, a strong magnet is brought close to a transparent plate such as a glass plate that covers the front of the game area, and the game ball is attracted to the magnet through the transparent plate, causing the game ball to enter a winning opening such as a starting opening. The act of illegally entering the ball (so-called goto act) may be performed. Therefore, it has been proposed to install a magnetic sensor in a game machine in order to detect such a goto act (for example, Patent Document 1). When a fraudulent person brings a magnet close to the transparent plate, it is possible to detect cheating based on a change in the magnetic field acting on the magnetic sensor.

In addition, the strength of the magnetic field measured in the initialization process of the magnetic sensor (magnetic field measuring means) performed when the power of the game machine is turned on is stored as a reference value. It is known that subtle changes in the magnetic field can be sensed by comparing .

JP 2009-66342 A

However, in a game machine equipped with a magnetic sensor as described above, if for some reason the initialization process of the magnetic sensor is not performed normally and the reference value is deviated, a goto act using the magnet will be performed after that. There was a problem that it could not be detected even if it was detected.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a game machine capable of detecting an abnormality when the initialization process of the magnetic sensor is not performed normally. .

In order to solve at least part of the above problems, the gaming machine of the present invention employs the following configuration. i.e.
A game machine equipped with a magnetic field measuring means capable of measuring the strength of a magnetic field acting on a predetermined position of a game area formed on a game board by shooting game balls toward the game area,
a storage means for storing, as a reference value, the value measured by the magnetic field measurement means in an initialization process performed when the power is turned on;
inspection means for inspecting whether the initialization process has been performed normally;
a magnetic field generating means installed within a range where a magnetic field is generated by energization and the magnetic field acts on the magnetic field measuring means;
energization control means for controlling energization to the magnetic field generating means during inspection by the inspection means;
When the inspection by the inspection means is completed, the presence or absence of change in the magnetic field acting on the game area is determined based on the comparison between the measured value by the magnetic field measurement means and the reference value stored in the storage means. comprising determination means and
The inspection means determines whether the difference between the measured value of the magnetic field measuring means and the reference value when the magnetic field generating means is energized is smaller than a predetermined threshold, or the magnetic field when the magnetic field generating means is not energized. Abnormality is detected when the difference between the measured value of the measuring means and the reference value is equal to or greater than the threshold value.

In the gaming machine of the present invention described above,
A plurality of the magnetic field generating means are provided and arranged dispersedly with respect to the magnetic field measuring means,
The energization control means sequentially energizes the plurality of magnetic field generation means during inspection by the inspection means,
The inspection means determines whether the difference between the measurement value of the magnetic field measurement means and the reference value when any one of the plurality of magnetic field generation means is energized is smaller than the threshold value, or all of the magnetic field generation means Abnormality may be detected when the difference between the measured value of the magnetic field measuring means and the reference value is equal to or greater than the threshold when the magnetic field is not energized.

Further, in the gaming machine of the present invention described above,
The game area is provided with a winning opening into which game balls can enter,
The magnetic field measuring means is arranged behind the winning opening on the back side of the game board,
The plurality of magnetic field generating means may be arranged on the back side of the game board so as to surround the winning opening.

According to the present invention, it is possible to detect an abnormality when the initialization process of the magnetic sensor is not performed normally.

1 is a front view of the pachinko machine 1 of this embodiment. FIG. It is an explanatory view showing the board surface configuration of the game board 20 of the present embodiment. It is a perspective view illustrating the arrangement of the magnetic sensor unit 50 in the pachinko machine 1 of the present embodiment. 2 is a block diagram showing the configuration of a control circuit in the pachinko machine 1 of this embodiment. FIG. 1 is an explanatory diagram conceptually showing a network configuration of a game hall; FIG. 4 is a flowchart showing magnetic sensor initialization processing executed by a control section 52 of the magnetic sensor unit 50. FIG. 4 is a flowchart showing abnormal magnetic field monitoring processing executed by a control section 52 of the magnetic sensor unit 50. FIG.

In order to clarify the content of the present invention described above, an embodiment in which the present invention is applied to a pachinko machine (game machine) of the type called "seven machine" or "digi-pachi" will be described. In the embodiment, "front" and "front" indicate "front with respect to the gaming machine", that is, "direction approaching the player (front side as viewed from the player)", and "back" and "front". "Back" indicates "rear side with respect to the gaming machine", that is, "direction away from the player (back side as seen from the player)". "Upper" means "upper" as seen from the player, "lower" means "lower" as seen from the player, and "left" as seen from the player. It indicates "left", and "right" indicates "right" as seen from the player.

A. Equipment configuration of pachinko machine:
A-1. Configuration of the front side of the device:
FIG. 1 is a front view of a pachinko machine 1 of this embodiment. As shown in FIG. 1, a front frame 4 is provided on the front face of the pachinko machine 1. As shown in FIG. One end (left side in FIG. 1) of the front frame 4 is rotatably supported with respect to the middle frame 3 . A game board 20 (see FIG. 2) is detachably attached to the front side of the middle frame 3, and when the front frame 4 is rotated (opened) to the front side of the pachinko machine 1 with respect to the middle frame 3, , the game board 20 is exposed. One end (left side in FIG. 1) of the middle frame 3 is rotatably supported with respect to the body frame 2 . The body frame 2 is a substantially rectangular frame formed by assembling wooden plate members, and forms an outer frame of the pachinko machine 1 .

A window portion 4a is formed in a substantially central portion of the front frame 4, and a transparent plate 4b such as a glass plate is fitted in the window portion 4a. The player can visually recognize a later-described game area of the game board 20 arranged on the far side through the window portion 4a (transparent plate 4b). A small window portion 4c is formed in the lower right portion of the window portion 4a in the front frame 4, and a transparent plate 4d such as a synthetic resin plate is fitted in the small window portion 4c. A player can visually recognize a segment display portion, which will be described later, of the game board 20 arranged on the far side through the small window portion 4c (transparent plate 4d).

An upper lamp 5a is provided above the window portion 4a in the front frame 4, a right side lamp 5b is provided on the right peripheral portion of the window portion 4a, and a left side lamp 5c is provided on the left peripheral portion of the window portion 4a. is provided. A pair of upper speakers 6a are provided on the upper left and right sides of the window portion 4a, and a lower speaker 6b is provided on the lower front side of the body frame 2. As shown in FIG. These upper lamp 5a, right side lamp 5b, left side lamp 5c, upper speaker 6a, and lower speaker 6b are driven in order to enhance the effect of the game.

An upper plate portion 7 is provided below the window portion 4a in the front frame 4. As shown in FIG. In the upper plate portion 7, game balls lent out via a card unit 242 (see FIG. 4) and game balls paid out from the pachinko machine 1 are stored. In addition, a lower plate portion 8 is provided below the upper plate portion 7, and a game ball lent out exceeding the capacity of the upper plate portion 7 and a game ball paid out exceeding the capacity of the upper plate portion 7 are used. A ball is stored.

A firing handle 9 that can be rotated by the player is provided on the right side of the lower plate portion 8 in the front frame 4 . A rotation shaft of the firing handle 9 is connected to a firing device unit 261 (see FIG. 4) mounted on the far side of the firing handle 9 . Game balls stored in the upper plate portion 7 are supplied to the launcher unit 261 . When the player rotates the firing handle 9, the rotation is transmitted to the firing device unit 261, the firing motor built in the firing device unit 261 operates, and the game is played with strength corresponding to the rotation angle of the firing handle 9. A ball is launched.

In addition, on the edge of the front side of the upper plate portion 7, a production button 10a that can be pressed by the player is provided. jog shuttle 10b is provided. These effect buttons 10a and jog shuttle 10b are both effect operation units operated by the player, and when they are operated by the player when a predetermined condition is established, a predetermined game effect is performed.

A-2. Game board configuration:
FIG. 2 is an explanatory diagram showing the board configuration of the game board 20. As shown in FIG. As described above, the game board 20 is detachably attached to the front side of the middle frame 3 . As shown in FIG. 2, a substantially circular game area 21 is formed in the center of the game board 20 . A game ball shot from the shooting device unit 261 (see FIG. 4) passes between the outer rail 22 and the inner rail 23, is released to the game area 21, and flows down the game area 21 from above. Since the game area 21 is visible to the player through the window portion 4a (transparent plate 4b) of the front frame 4, the game ball flowing down the game area 21 can be visually recognized by the player through the window portion 4a as a matter of course. be.

A central device 40 is provided substantially in the center of the game area 21 , and the central device 40 is provided with an effect display device 41 . The production display device 41 is composed of a liquid crystal display, and can display various images for production on its display screen. For example, three identification patterns 41a, 41b, and 41c can be displayed as production patterns. , and the variable display is executed.

A normal symbol operation gate 27 is provided on the right side of the central device 40 (effect display device 41 ) in the game area 21 . When the game ball passes through the normal symbol operation gate 27, it is detected by the built-in gate sensor 27s (see FIG. 4) and flows downward.

Below the central device 40 (effect display device 41) in the game area 21, a first start port 24 is provided. The first starting port 24 is open upward, and the possibility of entering a game ball is unchanged (constant), so that a game ball can enter at all times. A game ball entering the first starting hole 24 is guided to the back side of the game board 20 through the passage and detected by the first starting hole sensor 24s (see FIG. 4).

Below the first starter opening 24 in the game area 21, there is provided a second starter opening 25 in which the ball entry possibility of the game ball can be changed. The second starting port 25 of this embodiment is of a so-called tulip type, and has a pair of wing pieces 26 rotatably on the left and right sides. It can be changed to a closed state in which the ball is difficult) and an open state in which the pair of wing pieces 26 rotate outward and a game ball can be entered (or entered easily). FIG. 2 shows a state in which the second starting port 25 is closed. A game ball entering the second starting hole 25 is guided to the back side of the game board 20 through the passage and detected by the second starting hole sensor 25s (see FIG. 4).

On the right side of the first starting hole 24 in the game area 21, there is provided a big prize winning hole 28 that opens forward in a substantially rectangular shape. The large winning opening 28 is provided with an opening/closing door 29 that can rotate with the upper end side tilted forward about the lower end side. The door 29 can be rotated forward to change to an open state in which a game ball can enter. FIG. 2 shows a state in which the big winning opening 28 is in an open state. A game ball entering the big winning hole 28 is guided to the back side of the game board 20 through the passage and detected by the big winning hole sensor 28s (see FIG. 4).

Two winning openings 30 are provided on the left side of the first starting opening 24 in the game area 21 . The other prize winning opening 30 is open upward, and the possibility of entering the game ball does not change, and the game ball can always enter. A game ball entered into the other winning opening 30 is guided to the back side of the game board 20 through the path and detected by the other winning opening sensor 30s (see FIG. 4).

In the vicinity of each of the game devices described above, there are provided a windmill-shaped wheel 32 that influences the path along which game balls flow, and a large number of game pegs (not shown in FIG. 2). Furthermore, an out port 33 is provided at the bottom of the game area 21, and a ball enters any of the above-described first start port 24, second start port 25, big winning port 28, and other winning ports 30. The missing game balls are discharged from the out port 33 to the back side of the game board 20.例文帳に追加

In the pachinko machine 1 of the present embodiment, due to the arrangement of a plurality of game nails, etc., the above-described first starting port 24 and other prize winning ports 30 flow down the area to the left of the central device 40 (effect display device 41). A game ball can enter. On the other hand, game balls flowing down the area on the right side of the central device 40 can pass through or enter the normal symbol operation gate 27, the big winning opening 28, and the second starting opening 25. FIG. Below, shooting a game ball so as to flow down the area on the left side of the central device 40 is also expressed as "left hitting", and shooting a game ball so as to flow down the area on the right side of the central device 40 is also referred to as "right-handed". Incidentally, in the pachinko machine 1 of this embodiment, when a game ball enters any of the first start hole 24, the second start hole 25, and the winning hole 30, five game balls are paid out as prize balls. When a game ball enters the big winning hole 28, 13 game balls are paid out.

In addition, a segment display section 35 is provided at the lower right side of the game area 21 on the game board 20 to display information related to the game by combining a plurality of LEDs. The segment display portion 35 can be visually recognized by the player through a small window portion 4c (see FIG. 1) provided in the front frame 4. FIG.

Further, the pachinko machine 1 of this embodiment is equipped with a magnetic sensor unit 50, which is installed on the back side of the game board 20. As shown in FIG. FIG. 3 is a perspective view illustrating the arrangement of the magnetic sensor unit 50 in the pachinko machine 1 of this embodiment. As illustrated, the magnetic sensor unit 50 of this embodiment is arranged behind the first starting port 24 .

In the pachinko machine 1, a strong magnet is brought close to the transparent plate 4b covering the front surface of the game area 21, and the game balls are attracted to the magnet through the transparent plate 4b, thereby causing the game balls to enter various winning openings such as the first start opening 24. The act of illegally entering the ball (so-called goto act) may be performed. In particular, as will be described later, the first starting port 24 and the second starting port 25, which are highly profitable for the player, are likely to be the target of fraud.

Therefore, if the magnetic sensor unit 50 is mounted behind the first starting port 24, if a fraudulent person approaches the first starting port 24 or the second starting port 25 directly below the magnet through the transparent plate 4b, , based on the change in the magnetic field acting on the magnetic sensor unit 50, it is possible to detect an abnormal magnetic field as an act of fraud.

In addition, the pachinko machine 1 of this embodiment is equipped with an electromagnet 55 , which is installed within a range where a magnetic field generated by energization acts on the magnetic sensor unit 50 . In the illustrated example, five electromagnets 55a to 55e are mounted, and all of them are installed on the back side of the game board 20. FIG. Five electromagnets 55a to 55e are dispersedly arranged so as to surround the first starting port 24 when the game board 20 is viewed from the front. The electromagnet 55 of this embodiment corresponds to the "magnetic field generating means" of the present invention. Also, the role of the electromagnet 55 will be described later in detail.

A-3. Control circuit configuration:
Next, the configuration of the control circuit in the pachinko machine 1 of this embodiment will be described. FIG. 4 is a block diagram showing the configuration of the control circuit in the pachinko machine 1 of this embodiment. As illustrated, the control circuit of the pachinko machine 1 is composed of many control boards and various boards. Focusing on the functions, it can be roughly divided into a main control board 200 that controls the basic progress of the game, a sub-control board 220 that controls the performance of the game, and an image under the control of the sub-control board 220. An image/audio control board 230 that controls display and sound output, a lamp control board 226 that controls lamp light emission under the control of the sub-control board 220, and a game ball rental and payout control. It is composed of a payout control board 240 and a launch control board 260 that controls the launch of game balls. These control boards include CPUs (CPUs 201, 221, 231, etc. in FIG. 4) that execute various logic operations and calculation operations, and ROMs (ROMs 202, 222 in FIG. 4) that store various programs and data executed by the CPUs. , 232, etc.), RAMs (RAMs 203, 223, 233, etc. in FIG. 4) in which the CPU stores temporary data when executing programs, input/output circuits, etc. Various peripheral LSIs are interconnected by buses. It is

The main control board 200 includes a first starting hole sensor 24s that detects a game ball entering the first starting hole 24, a second starting hole sensor 25s that detects a game ball entering the second starting hole 25, A gate sensor 27s for detecting a game ball passing through the normal symbol operation gate 27, a big winning hole sensor 28s for detecting a game ball entering the big winning hole 28, and others for detecting a game ball entering the winning hole 30. A winning opening sensor 30s and the like are connected. When the CPU 201 of the main control board 200 receives a game ball detection signal from the first starting sensor 24s, the second starting sensor 25s, the gate sensor 27s, the big winning sensor 28s, and the other winning sensor 30s. , and transmits a command corresponding to the sensor that has received the input of the detection signal to the sub-control board 220, the payout control board 240, and the like.

The main control board 200 also includes a starter solenoid 26m for driving a pair of winglets 26 capable of switching between the open state and the closed state of the second starter port 25, and the open state and the closed state of the big prize winning port 28. A large winning opening solenoid 29m for driving an opening/closing door 29 capable of switching between the two, a segment display section 35, and the like are connected. The CPU 201 of the main control board 200 controls these operations by transmitting drive signals (energizing) to the starting solenoid 26m, the big win solenoid 29m, and the segment display section 35. FIG.

In addition, the main control board 200 is connected to the five electromagnets 55a to 55e described above. In the initialization process performed when the power is turned on, the CPU 201 of the main control board 200 energizes and activates each of the start solenoid 26m and the big prize winning solenoid 29m. Each of the four electromagnets 55a to 55e is sequentially energized to generate a magnetic field around the first starting port 24. As shown in FIG. It should be noted that the CPU 201 of the main control board 200 of this embodiment corresponds to the "energization control means" of the present invention.

The sub-control board 220 is connected to an image/audio control board 230, a lamp control board 226, an effect operation board 228, and the like. When receiving various commands from the main control board 200, the CPU 221 of the sub-control board 220 analyzes the contents of the commands and performs game effects according to the contents. That is, to the image/audio control board 230, a command specifying a display image and an output sound is transmitted, and to the lamp control board 226, the upper lamp 5a, the right side lamp 5b, and the left side lamp 5c (hereinafter referred to as "various A game effect is performed by transmitting a command designating the light emission pattern of the lamps 5a to 5c. In addition, when the CPU 221 of the sub-control board 220 detects the player's operation of the effect button 10a or the jog shuttle 10b (hereinafter also referred to as "effect operation units 10a and 10b") via the effect operation board 228, A corresponding game production is performed.

The image/audio control board 230 includes a VDP 234 , an image ROM 235 and an audio ROM 236 in addition to a CPU 231 , a ROM 232 and a RAM 233 . Upon receiving a command from the sub-control board 220, the CPU 231 of the image/audio control board 230 instructs the VDP 234 to display an image corresponding to the command. The VDP 234 reads out image data (for example, sprite data, moving image data, etc.) used for displaying the instructed image from the image ROM 235 to generate an image and outputs it to the display screen of the effect display device 41 . When the CPU 231 of the image/audio control board 230 receives a command from the sub-control board 220, the CPU 231 reads the voice data corresponding to the command from the voice ROM 236, and transmits the signal of the voice data to the amplifier board 224. Audio is output from the upper speaker 6a and the lower speaker 6b (hereinafter also referred to as "various speakers 6a and 6b").

The payout control board 240 is connected to a ball lending button 241 (not shown in FIG. 1) provided on the upper tray 7, a card unit 242 provided in parallel with the pachinko machine 1, a payout motor 243, and the like. When the ball lending button 241 is operated, the detection signal is transmitted to the card unit 242 via the payout control board 240 . The card unit 242 drives the payout motor 243 while communicating data with the payout control board 240 to lend the game balls. Further, when the payout control board 240 receives a payout command instructing the payout of game balls from the main control board 200, the payout control board 240 drives the payout motor 243 to pay out the game balls.

A firing control board 260 is connected to the payout control board 240 , and a firing device unit 261 is connected to the firing control board 260 . The shooting device unit 261 has a shooting motor 262 for shooting game balls, a touch switch 263 for detecting that the player is touching the shooting handle 9, and the like. When the touch switch 263 detects that the player is touching the shooting handle 9, the shooting motor 262 is activated, and the game ball is shot with a strength corresponding to the rotation angle of the shooting handle 9.例文帳に追加

Power consumed by these control boards and various boards is supplied from the power supply board 270 . The power board 270 is supplied with an AC voltage of 100 V, converts it into a DC voltage of a specified voltage, and then supplies power to each control board and various boards.

Also, the pachinko machine 1 of this embodiment is provided with an external terminal board 70 for transmitting signals to the outside, and is connected to the main control board 200 . The CPU 201 of the main control board 200 detects various sensors (first start sensor 24s, second start sensor 25s, gate sensor 27s, big winning sensor 28s, other winning sensor 30s, etc.) that have input detection signals. Corresponding signals and signals indicating the state of the pachinko machine 1 can be transmitted to the outside of the pachinko machine 1 via the external terminal board 70 .

Furthermore, the pachinko machine 1 of this embodiment is equipped with the magnetic sensor unit 50 as described above, and is connected to the main control board 200 and the external terminal board 70 . The magnetic sensor unit 50 includes a sensor element 51 that can measure the strength of the magnetic field, a control unit 52 that controls detection of an abnormal magnetic field (goto act) based on changes in the measured value of the sensor element 51, and a reference value of the magnetic field. It has a storage unit 53 for storing. As the sensor element 51, various well-known elements such as a Hall element and a magnetoresistive element (MR element) can be employed. The sensor element 51 of this embodiment corresponds to the "magnetic field measuring means" of the present invention. Further, the control section 52 of this embodiment corresponds to the "determining means" of the present invention, and the storage section 53 of the present embodiment corresponds to the "storage means" of the present invention.

When detecting an abnormal magnetic field, the control section 52 can transmit the detection signal to the outside of the pachinko machine 1 via the external terminal board 70 . In addition, the CPU 201 of the main control board 200 directs an energization signal indicating energization to each electromagnet 55 to the magnetic sensor unit 50 when sequentially energizing the five electromagnets 55a to 55e in the initialization process as described above. to be sent.

A plurality of pachinko machines 1 of this embodiment as described above are installed in a game hall. FIG. 5 is an explanatory diagram conceptually showing the network configuration of the gaming hall. A plurality of pachinko machines 1 are installed in the game hall, and a hall computer 95 for managing the entire game hall is installed. Each pachinko machine 1 in the game hall is communicably connected to a hall computer 95 via a relay device 90 .

In the illustrated example, one relay device 90 is provided for two pachinko machines 1, and as described above, the pachinko machine 1 transmits various signals from the external terminal board 70 to the outside. It is possible. The relay device 90 collects signals indicating game information from the two pachinko machines 1 and transmits them to the hall computer 95. The hall computer 95 manages the game data for each pachinko machine 1. is possible.

A data display machine 80 is installed for each pachinko machine 1 above the pachinko machine 1 in the game hall. The data display machine 80 has a liquid crystal display section 81 on which various information relating to the game of the pachinko machine 1 can be displayed. In addition, status lamps 82 are provided on the left, right, and above the liquid crystal display section 81, and the status lamps 82 can be lit with changing colors according to the game status of the pachinko machine 1. .

The data display machine 80 is communicably connected to the relay device 90, acquires information about the game of the pachinko machine 1 from the relay device 90, and displays the display of the liquid crystal display unit 81 and the status lamp 82 based on the information. Execute lighting. In addition, as described above, when the magnetic sensor unit 50 of the pachinko machine 1 detects an abnormal magnetic field (a fraudulent act), a detection signal is transmitted to the outside through the external terminal board 70, and the detection signal is sent from the relay device 90. The data is transmitted to the hall computer 95 and to the data display 80, thereby lighting the status lamp 82 in a predetermined alarm color (for example, red).

B. Game overview:
In the pachinko machine 1 of this embodiment, the game progresses as follows. When the player rotates the shooting handle 9 while the game balls are stored in the upper plate portion 7, the game balls stored in the upper plate portion 7 are supplied one by one to the shooting device unit 261, and as shown in FIG. It is shot toward the game area 21 described above. Since the strength with which the game ball is shot corresponds to the rotation angle of the shooting handle 9, the player can make the game ball flow down to the area desired by the player by adjusting the rotation angle of the shooting handle 9. - 特許庁For example, a game ball is shot so as to flow down the left area of the central device 40 (effect display device 41) (left hitting), or a game ball flows down the right area of the central device 40 can be fired (or hit right).

As described above, a left-handed game ball can enter the first starting port 24 . When the game ball enters the first starting port 24 and is detected by the first starting port sensor 24s, a predetermined judgment random number (such as a big hit judgment random number) is acquired, and whether it is a big hit or not based on the value of the judgment random number. A big hit determination is performed to determine whether it is out. Then, based on the result of the big hit determination, the segment display unit 35 blinks a plurality of first special symbols LED representing the first special symbol (hereinafter also referred to as "first special symbol") to display the first special symbol. After the variable display, LEDs are lit in a predetermined combination to stop and display the first special figure. At this time, if the result of the big hit determination is a big win, the LEDs of the combination corresponding to the big win pattern are lit up, and if the result is a loss, the LEDs of the combination corresponding to the winning pattern are lit up.

In addition, as described above, a game ball hit to the right can enter the second starting port 25 . When a game ball enters the second starting hole 25 and is detected by the second starting hole sensor 25s, a judgment random number is acquired and a big hit is judged. Then, based on the big hit determination result, the segment display unit 35 blinks a plurality of second special symbols LED representing the second special symbol (hereinafter also referred to as "second special symbol") to change the second special symbol. After displaying, LEDs are lit in a combination according to the result of the big hit determination, and the second special figure is stopped and displayed in the same manner as the first special figure.

In addition, even if the game ball enters the first start port 24 or the second start port 25, the condition for starting a new variable display is not satisfied during the variable display of the first special figure or the second special figure. In the case, the value of the judgment random number obtained by entering the first starting port 24 is stored as the first special figure reservation, and the value of the judgment random number obtained by entering the second starting port 25 is stored as the second special Store as figure pending. After that, when the condition for starting a new variable display of the special symbol (first special symbol or second special symbol) is satisfied, the big hit determination is performed based on the first special symbol reservation or the second special symbol reservation, and the corresponding special symbol Variation display of the symbol (first special figure or second special figure) is performed. In the pachinko machine 1 of the present embodiment, each of such first special figure suspension and second special figure suspension can be stored up to four. Further, when both the first special figure reservation and the second special figure reservation are stored, the big hit determination based on the second special figure reservation is performed in preference to the first special figure reservation (second special figure reservation). Since the reservation is preferentially digested), the big hit determination based on the first special figure reservation is performed when the second special figure reservation is not stored.

Furthermore, in conjunction with the variable display of the special symbols, the identification symbols 41a, 41b, 41c in the effect display device 41 switch over a plurality of numbers (for example, nine numbers "1" to "9") one after another and display them in a variable manner. An effect (hereinafter also referred to as "symbol change effect") is performed. The three identification symbols 41a, 41b, and 41c are stop-displayed in a combination (separate eyes) of the same numbers when the special symbols are off and stop-displayed, whereas the special symbols are the jackpot symbols. In the case of stop display, a combination of the same number (double order) is stop display. For this reason, if two of the three identification symbols are stopped and displayed with the same number, the last identification symbol that is stopped and displayed will also have the same number. You will have to pay attention to the design variation production). In this way, the production performed while the last identification pattern is variably displayed in a state where the two identification patterns are stopped and displayed with the same pattern is called "reach production", and the game interest is enhanced by generating the reach production. It is possible to increase

When the first special symbol or the second special symbol is stop-displayed as a big win symbol, a big win game is executed in which the big winning opening 28 is opened. In the jackpot game, a round game is repeated a plurality of times in which the opened jackpot 28 is closed when a specified number (for example, 9) of game balls enter or after a predetermined opening time (for example, 30 seconds) elapses. . In the pachinko machine 1 of the present embodiment, a plurality of jackpot symbols are provided, and the number of round games performed in the jackpot game differs depending on the type of the jackpot symbols stopped and displayed (for example, 10 times, 13 times, 15 times, etc.). times). As described above, a right-handed game ball can enter the big winning hole 28, and when a game ball enters the big winning hole 28, 13 game balls are paid out as prize balls. A player can win a large amount of prize balls through the jackpot game.

Further, as described above, the normal symbol operation gate 27 is provided on the right side of the central device 40 (effect display device 41), and the game ball struck to the right can pass through the normal symbol operation gate 27. . When the game ball passing through the normal pattern operation gate 27 is detected by the gate sensor 27s, a predetermined judgment random number (such as a normal pattern hit judgment random number) is acquired, and whether it is a normal pattern hit or not based on the value of the judgment random number. Judgment per normal figure is performed. Subsequently, based on the result of the normal pattern hit determination, the two left and right normal pattern LEDs representing the normal pattern in the segment display unit 35 are blinked to display the normal pattern in a variable manner, and then one of the LEDs is lit. The normal pattern is stopped and displayed. At this time, in the pachinko machine 1 of the present embodiment, if the result of the normal pattern hit determination is a normal pattern hit, the left LED corresponding to the normal pattern hit pattern is lit, and if the result is a loss, it corresponds to the lost pattern. Turn on the right LED. When the normal pattern is stopped and displayed in the normal pattern per pattern, the normal pattern per game is performed in which the second starting port 25 is in an open state, so there is a possibility that the game ball enters the second starting port 25. (That is, the possibility that the variable display of the second special figure is performed) increases.

In addition, even if the game ball passes through the normal symbol activation gate 27, if the conditions for starting a new variable display are not satisfied during the variable display of the normal symbol, the value of the acquired determination random number is reserved for the normal symbol. It is possible to store up to four items as After that, when the condition for starting a new variable display of normal symbols is satisfied, normal pattern hit determination and variable display of normal symbols are performed based on the normal pattern reservation.

The opening time of the second starting port 25 in the game per normal pattern differs depending on whether it is "electrical support state" or "non-electrical support state". In the electric support state, the opening time of the second starting port 25 is set longer than in the non-electric support state. In addition, in the electric sapo state, the probability that the result of the normal pattern hit determination is a normal pattern hit is higher than in the non-electric support state (normal pattern hit probability), and the fluctuation time of the normal pattern is set short. Therefore, in the electric support state, the possibility that the game ball enters the second starting port 25 (that is, the possibility that the second special figure is displayed in a variable manner) increases compared to the non-electric support state.

In the pachinko machine 1 of this embodiment, a plurality of jackpot symbols provided are roughly divided into "normal winning symbols" and "variable winning symbols", and which special symbol (first special symbol or second special symbol) is selected. Even when the jackpot pattern is stopped and displayed, the power support state is set after the jackpot game ends. In the case of the normal winning pattern, the probability that the result of the jackpot determination will be a big win (jackpot probability) is set to a predetermined normal probability (low probability) after the end of the jackpot game, and the number of times the special pattern changes is a predetermined number. When it reaches (for example, 100 times), it is set to the non-electric support state. On the other hand, in the case of the probability variable winning pattern, the big winning probability is set to a high probability higher than the normal probability after the big winning game ends, and is continued until the next big winning game together with the electric support state. Below, the state in which the jackpot probability is set to a high probability may be referred to as "probability variable state". In addition, in the electric sapo state, the fluctuation time of the special symbols (first special figure and second special figure) is set shorter than in the non-electric sapo state, so it is in the electric sapo state and the jackpot probability is normal probability The state set to may be referred to as a "time saving state".

In the pachinko machine 1 of the present embodiment as described above, a magnet is used in the first start port 24 and the second start port 25, which are highly profitable for the player, to detect a fraudulent act of illegally entering a game ball. For this purpose, the magnetic sensor unit 50 is mounted as described above. Processing executed by the control unit 52 of the magnetic sensor unit 50 will be described below.

C. Control contents of the magnetic sensor unit of this embodiment:
C-1. Magnetic sensor initialization processing:
FIG. 6 is a flowchart showing magnetic sensor initialization processing executed by the control section 52 of the magnetic sensor unit 50 . This magnetic sensor initialization process is executed along with the initialization process of the CPU 201 of the main control board 200 which is performed when the power of the pachinko machine 1 is turned on. When the magnetic sensor initialization process is started, first, the strength of the magnetic field is measured by the sensor element 51 (S100), and the measured value is stored in the storage unit 53 as a reference value (S101).

Subsequently, it is determined whether or not an energization signal to the first electromagnet 55a has been received from the main control board 200 (S102). As described above, the CPU 201 of the main control board 200 sequentially energizes the five electromagnets 55a to 55e in the initialization process, and transmits an energization signal indicating the energization of each electromagnet 55 to the magnetic sensor unit 50. It's like When the energization signal to the first electromagnet 55a is received (S102: yes), the strength of the magnetic field is measured by the sensor element 51, and whether the difference between the measured value and the reference value is equal to or greater than a predetermined threshold value. It is determined whether or not (S103).

When the first electromagnet 55a is energized, the magnetic field generated by the first electromagnet 55a acts on the magnetic sensor unit 50, so that the measured value of the sensor element 51 changes from before the first electromagnet 55a is energized (reference value). Therefore, if the reference value is normally stored, it should appear as a difference equal to or greater than the threshold. Nevertheless, if the difference between the measured value and the reference value is smaller than the threshold and contradicts (S103: no), there is an abnormality in the initialization of the magnetic sensor unit 50 (the reference value is not stored normally). Then, an initialization abnormality detection signal indicating detection of initialization abnormality is transmitted to the outside of the pachinko machine 1 via the external terminal board 70 (S104), and the magnetic sensor initialization processing of FIG. 6 is terminated. This initialization abnormality detection signal is transmitted from the relay device 90 to the hall computer 95 and to the data display device 80, whereby the status lamp 82 lights in an alarm color (for example, red). The control unit 52 of this embodiment corresponds to the "inspection means" of the present invention.

On the other hand, if the difference between the measured value of the sensor element 51 and the reference value when the first electromagnet 55a is energized is equal to or greater than the threshold value (S103: yes), there is no contradiction, and 5 It is determined whether or not all of the electromagnets 55a to 55e are energized (S105). If there are electromagnets 55 that have not yet been energized (S105: no), the process returns to S102 to determine whether or not an energization signal to the first electromagnet 55a has been received.

If the energization signal to the first electromagnet 55a has already been received, it will not be received again (S102: no). (S106). When the energization signal to the second electromagnet 55b is received (S106: yes), the strength of the magnetic field is measured by the sensor element 51, and it is determined whether or not the difference between the measured value and the reference value is equal to or greater than the threshold. (S103). As with the first electromagnet 55 a , when the second electromagnet 55 b is energized, the magnetic field generated by the second electromagnet 55 b acts on the magnetic sensor unit 50 . At this time, if the difference between the measured value and the reference value is smaller than the threshold value (S103: no), the result is contradictory, so an initialization abnormality detection signal is transmitted to the outside of the pachinko machine 1 (S104), The magnetic sensor initialization process of FIG. 6 is ended.

On the other hand, if the difference between the measured value of the sensor element 51 and the reference value when the second electromagnet 55b is energized is equal to or greater than the threshold value (S103: yes), the results are consistent, so the five electromagnets 55a to 55e It is determined whether all the electromagnets 55 have been energized (S105), and if there are still electromagnets 55 that have not been energized (S105: no), the process returns to S102.

If the energization signal to the first electromagnet 55a and the second electromagnet 55b has already been received (S102: no, S106: no), then whether the energization signal to the third electromagnet 55c has been received from the main control board 200? It is determined whether or not (S107). When the energization signal to the third electromagnet 55c is received (S107: yes), the strength of the magnetic field is measured by the sensor element 51, and it is determined whether the difference between the measured value and the reference value is equal to or greater than the threshold. (S103). Similarly to the first electromagnet 55a, if the difference between the measured value and the reference value is smaller than the threshold when the third electromagnet 55c is energized (S103: no), the results are inconsistent. A signal is transmitted to the outside of the pachinko machine 1 (S104), and the magnetic sensor initialization process of FIG. 6 ends.

On the other hand, if the difference between the measured value of the sensor element 51 and the reference value when the third electromagnet 55c is energized is equal to or greater than the threshold value (S103: yes), the results are consistent, so the five electromagnets 55a to 55e It is determined whether all the electromagnets 55 have been energized (S105), and if there are still electromagnets 55 that have not been energized (S105: no), the process returns to S102.

If the energization signal to the first electromagnet 55a to the third electromagnet 55c has already been received (S102: no, S106: no, S107: no), then the energization signal from the main control board 200 to the fourth electromagnet 55d. is received (S108). When the energization signal to the fourth electromagnet 55d is received (S108: yes), the strength of the magnetic field is measured by the sensor element 51, and it is determined whether or not the difference between the measured value and the reference value is equal to or greater than the threshold. (S103). Similarly to the first electromagnet 55a, if the difference between the measured value and the reference value is smaller than the threshold when the fourth electromagnet 55d is energized (S103: no), the results are inconsistent. A signal is transmitted to the outside of the pachinko machine 1 (S104), and the magnetic sensor initialization process of FIG. 6 ends.

On the other hand, if the difference between the measured value of the sensor element 51 and the reference value when the fourth electromagnet 55d is energized is equal to or greater than the threshold value (S103: yes), the results are consistent, so the five electromagnets 55a to 55e It is determined whether all the electromagnets 55 have been energized (S105), and if there are still electromagnets 55 that have not been energized (S105: no), the process returns to S102.

If the energization signal to the first electromagnet 55a to the fourth electromagnet 55d has already been received (S102: no, S106: no, S107: no, S108: no), then the fifth electromagnet 55e from the main control board 200 It is determined whether or not an energization signal to the has been received (S109). When the energization signal to the fifth electromagnet 55e is received (S109: yes), the strength of the magnetic field is measured by the sensor element 51, and it is determined whether or not the difference between the measured value and the reference value is equal to or greater than the threshold. (S103). Similarly to the first electromagnet 55a, if the difference between the measured value and the reference value is smaller than the threshold when the fifth electromagnet 55e is energized (S103: no), the results are inconsistent. A signal is transmitted to the outside of the pachinko machine 1 (S104), and the magnetic sensor initialization process of FIG. 6 ends.

On the other hand, if the difference between the measured value of the sensor element 51 and the reference value when the fifth electromagnet 55e is energized is equal to or greater than the threshold value (S103: yes), the results are consistent, so the five electromagnets 55a to 55e It is determined whether or not all are energized (S105). When all the electromagnets 55a to 55e are energized in this manner (S105: yes), the strength of the magnetic field is measured again by the sensor element 51 when none of the five electromagnets 55a to 55e is energized. Then, it is determined whether or not the difference between the measured value and the reference value is smaller than the threshold (S110).

Since none of the magnetic fields of the five electromagnets 55a to 55e act on the magnetic sensor unit 50 when power is not supplied, the measured value of the sensor element 51 does not differ significantly from the value before the power is supplied to the electromagnets 55a to 55e (reference value). If the reference value is stored normally, there should be almost no difference between the measured value and the reference value. Note that the threshold in this embodiment is set so as to allow for the measurement error of the sensor element 51 . Nevertheless, if the difference between the measured value and the reference value is equal to or greater than the threshold (S110: no), the results are inconsistent, indicating that there is an abnormality in the initialization of the magnetic sensor unit 50 (the reference value is normal). is not stored), an initialization abnormality detection signal is transmitted to the outside of the pachinko machine 1 (S104), and the magnetic sensor initialization processing of FIG. 6 ends.

On the other hand, if the difference between the measured value of the sensor element 51 and the reference value when the current is not supplied is smaller than the threshold (S110: yes), there is no contradiction, so the initialization of the magnetic sensor unit 50 is normal. 6, and terminates the magnetic sensor initialization process of FIG.

C-2. Abnormal magnetic field monitoring process:
FIG. 7 is a flowchart showing abnormal magnetic field monitoring processing executed by the control section 52 of the magnetic sensor unit 50. As shown in FIG. This abnormal magnetic field monitoring process is executed at a predetermined cycle (for example, every 5 minutes) after the magnetic sensor initialization process of FIG. 6 described above is completed. When the abnormal magnetic field monitoring process is started, first, the strength of the magnetic field is measured by the sensor element 51 (S200).

Subsequently, the reference value of the magnetic field is read from the storage unit 53 (S201), and it is determined whether or not the difference between the measured value of the magnetic field and the reference value is equal to or greater than a predetermined determination value (S202). Then, if the difference between the measured value of the magnetic field and the reference value is smaller than the judgment value (S202: no), it is determined that there is no abnormal change in the magnetic field (the act of using the magnet is not performed), The abnormal magnetic field monitoring process of FIG. 7 is temporarily ended as it is. After that, the abnormal magnetic field monitoring process of FIG. 7 is executed again at predetermined intervals.

On the other hand, if the difference between the measured value of the magnetic field and the reference value is greater than or equal to the judgment value (that is, the measured value of the magnetic field deviates from the reference value by the judgment value or more) (S202: yes), the magnetic field is abnormal. It is determined that there is a change (a goto act using a magnet is being performed), and an abnormal magnetic field detection signal indicating detection of an abnormal magnetic field is transmitted to the outside of the pachinko machine 1 via the external terminal board 70 ( S203), the abnormal magnetic field monitoring process of FIG. 7 is terminated. As described above, the abnormal magnetic field detection signal is transmitted from the relay device 90 to the hall computer 95 and to the data display device 80, thereby lighting the status lamp 82 in an alarm color.

As described above, in the pachinko machine 1 of this embodiment, not only is the magnetic sensor unit 50 mounted, but also the electromagnet 55 is mounted within the range where the magnetic field acts on the magnetic sensor unit 50 . Then, after storing the measured value of the sensor element 51 as a reference value in the storage unit 53 in the magnetic sensor initialization process performed when the power is turned on, the electromagnet 55 is energized, and the sensor element 51 when the electromagnet 55 is energized is measured. If the difference between the measured value and the reference value is smaller than a predetermined threshold, or if the difference between the measured value of the sensor element 51 and the reference value when the electromagnet 55 is not energized is greater than or equal to the threshold, it is detected as initialization abnormality. It is designed to

If the reference value is normally stored in the initialization of the magnetic sensor unit 50, the measured value of the sensor element 51 should approximately match the reference value when the electromagnet 55 is not energized. Since the measured value of the element 51 should deviate from the reference value by more than the threshold value, if the initialization of the magnetic sensor unit 50 is not performed normally, a result contradicting this will be detected as an initialization abnormality. becomes possible.

In addition, the pachinko machine 1 of this embodiment is equipped with five electromagnets 55a to 55e, which are arranged dispersedly with respect to the magnetic sensor unit 50. FIG. As a result, the magnetic field of the electromagnet 55 can be applied to the magnetic sensor unit 50 from different directions (while changing the direction in which the magnetic field is applied) to increase the number of checks for contradictory results. It is possible to improve detection accuracy. Furthermore, assuming a case where an illegal acter brings a magnet close to the transparent plate 4b after the completion of the magnetic sensor initialization processing, and an illegal magnetic field acts on the magnetic sensor unit 50 from various directions, comparison with the reference value is performed. It is possible to simulate whether or not an abnormal magnetic field can be detected (whether or not a goto act can be detected) by energizing the electromagnets 55a to 55e in advance.

In particular, in the pachinko machine 1 of the present embodiment, the magnetic sensor unit 50 is arranged behind the first starting port 24 (on the back side of the game board 20), which is highly profitable for the player, and five electromagnets are provided. 55 a to 55 e are arranged on the back side of the game board 20 so as to surround the first starting port 24 . As a result, it is assumed that a magnet is illegally approached from various directions to the first starting port 24 and the second starting port 25 directly below it, and an abnormal magnetic field is detected by comparing with the reference value. It is possible to simulate whether or not the electromagnets 55a to 55e are energized in advance to check whether or not they can be detected (whether or not they can detect the act of cheating).

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and is not limited to the wording of each claim as long as it does not depart from the scope described in each claim. Improvements can also be added as appropriate based on the knowledge that those skilled in the art generally have, as well as the range that can be easily replaced from them.

For example, in the above embodiment, five electromagnets 55a to 55e were mounted, but the number of electromagnets 55 does not necessarily have to be plural, and at least one may be mounted. Further, when the number of electromagnets 55 is plural, the number is not limited to five, and it is possible to disperse and arrange them in various directions with respect to the magnetic sensor unit 50 by increasing the number.

In the above-described embodiment, the plurality of electromagnets 55 are evenly arranged on the assumption that the detection range around the magnetic sensor unit 50 is equivalent in any direction. However, if the detection ranges around the magnetic sensor unit 50 are not equivalent, a plurality of electromagnets 55 may be arranged along the outer edge of the detection range.

Further, in the above-described embodiment, the magnetic sensor unit 50 is arranged behind the first starting port 24 . However, the arrangement of the magnetic sensor unit 50 is not particularly limited as long as it is possible to measure the strength of the magnetic field acting on a predetermined position in the game area 21. may be

Further, in the above-described embodiment, the magnetic sensor unit 50 is initialized when the power is turned on. However, the initialization process of the magnetic sensor unit 50 is not limited to when the power is turned on, and may be performed at any timing after the power is turned on (for example, when game balls are not fired for a predetermined period of time). .

Further, in the above-described embodiment, the magnetic sensor unit 50 has the sensor element 51 , the control section 52 and the storage section 53 . However, by connecting the sensor element 51 to the main control board 200, the CPU 201 of the main control board 200 may execute the magnetic sensor initialization process of FIG. 6 and the abnormal magnetic field monitoring process of FIG. Also, the measurement value of the sensor element 51 in the magnetic sensor initialization process may be stored in the RAM 203 as a reference value.

Further, in the above-described embodiment, the present invention is applied to the pachinko machine 1 that gives the player a profit (game value) as a result of the game by paying out the game balls supplied from the island facility of the game hall. I explained an example. The present invention is not limited to this, and the present invention can be applied to a type of gaming machine that gives a game profit in a form different from "payout of game balls". For example, by storing data indicating the amount of profit (magnitude of game value) corresponding to the entry of a game ball into various ball entrances, a game profit (game The present invention can also be applied to a type of pachinko machine that gives a player a value), and in this case also, the same effects as in the above-described embodiment can be obtained. Pachinko machines that convert game profits (game values) into data and give them to players include machines that circulate and use a plurality of game balls built into the pachinko machine. , a pachinko machine (a so-called enclosed game machine) configured to return game balls ejected to the back side of the game board through various ball inlets or outlets to the shooting position again and shoot them.

<Gaming machines A1 to A3 that can be extracted from the above-described embodiment>
The pachinko machine 1 of the embodiment and modification described above can be regarded as gaming machines A1 to A3 as follows.

<Game machine A1>
A game machine equipped with a magnetic field measuring means capable of measuring the strength of a magnetic field acting on a predetermined position of a game area formed on a game board by shooting game balls toward the game area,
a storage means for storing, as a reference value, the value measured by the magnetic field measurement means in an initialization process performed when the power is turned on;
inspection means for inspecting whether the initialization process has been performed normally;
a magnetic field generating means installed within a range where a magnetic field is generated by energization and the magnetic field acts on the magnetic field measuring means;
energization control means for controlling energization to the magnetic field generating means during inspection by the inspection means;
When the inspection by the inspection means is completed, the presence or absence of change in the magnetic field acting on the game area is determined based on the comparison between the measured value by the magnetic field measurement means and the reference value stored in the storage means. comprising determination means and
The inspection means determines whether the difference between the measured value of the magnetic field measuring means and the reference value when the magnetic field generating means is energized is smaller than a predetermined threshold, or the magnetic field when the magnetic field generating means is not energized. A gaming machine characterized in that when the difference between the measured value of the measuring means and the reference value is equal to or greater than the threshold value, it is detected as an abnormality.

In such a game machine A1, if the reference value is normally stored in the initialization process, the measured value of the magnetic field measuring means should substantially match the reference value when the magnetic field generating means is not energized. When the means is energized, the measured value of the magnetic field measuring means on which the magnetic field of the magnetic field generating means acts should deviate greatly from the reference value by more than the threshold value. An inspection result can be detected as an abnormality.

<Game machine A2>
In gaming machine A1,
A plurality of the magnetic field generating means are provided and arranged dispersedly with respect to the magnetic field measuring means,
The energization control means sequentially energizes the plurality of magnetic field generation means during inspection by the inspection means,
The inspection means determines whether the difference between the measurement value of the magnetic field measurement means and the reference value when any one of the plurality of magnetic field generation means is energized is smaller than the threshold value, or all of the magnetic field generation means a game machine, wherein an abnormality is detected when a difference between the measurement value of the magnetic field measuring means and the reference value is equal to or greater than the threshold value when the magnet is not energized.

In such a game machine A2, the magnetic field of the magnetic field generating means is applied to the magnetic field measuring means from different directions (while changing the direction in which the magnetic field acts), and the number of times of checking the presence or absence of contradictory test results is increased. Therefore, it is possible to improve the accuracy of detecting anomalies.

<Game machine A3>
In gaming machine A2,
The game area is provided with a winning opening into which game balls can enter,
The magnetic field measuring means is arranged behind the winning opening on the back side of the game board,
A gaming machine, wherein the plurality of magnetic field generating means are arranged on the back side of the gaming board so as to surround the winning opening.

In such a game machine A3, it is possible to detect an abnormal change in the magnetic field compared with the reference value, assuming that a game ball is entered by illegally approaching a magnet from various directions to the prize winning opening. It is possible to simulate whether or not (whether or not the act of using a magnet can be detected) by energizing the magnetic field generating means in advance.

INDUSTRIAL APPLICABILITY The present invention can be used for gaming machines used in gaming halls.

DESCRIPTION OF SYMBOLS 1... Pachinko machine (gaming machine), 4... Front frame, 4a... Window part,
4b... transparent plate, 20... game board, 21... game area,
24... First starting opening (winning opening), 25... Second starting opening, 26... Wing piece,
27... normal pattern operation gate, 28... big winning opening, 29... open/close door,
30...Other winning openings, 50...Magnetic sensor unit,
51...Sensor element (magnetic field measuring means), 52...Control section (inspection means, determination means),
53... Storage unit (storage means), 55... Electromagnet (magnetic field generation means),
200... main control board, 201... CPU (energization control means),
203 RAM.

Claims (3)

A game machine equipped with a magnetic field measuring means capable of measuring the strength of a magnetic field acting on a predetermined position of a game area formed on a game board by shooting game balls toward the game area,
a storage means for storing, as a reference value, the value measured by the magnetic field measurement means in an initialization process performed when the power is turned on;
inspection means for inspecting whether the initialization process has been performed normally;
a magnetic field generating means installed within a range where a magnetic field is generated by energization and the magnetic field acts on the magnetic field measuring means;
energization control means for controlling energization to the magnetic field generating means during inspection by the inspection means;
When the inspection by the inspection means is completed, the presence or absence of change in the magnetic field acting on the game area is determined based on the comparison between the measured value by the magnetic field measurement means and the reference value stored in the storage means. comprising determination means and
The inspection means determines whether the difference between the measured value of the magnetic field measuring means and the reference value when the magnetic field generating means is energized is smaller than a predetermined threshold, or the magnetic field when the magnetic field generating means is not energized. A gaming machine characterized in that when the difference between the measured value of the measuring means and the reference value is equal to or greater than the threshold value, it is detected as an abnormality. In the gaming machine according to claim 1,
A plurality of the magnetic field generating means are provided and arranged dispersedly with respect to the magnetic field measuring means,
The energization control means sequentially energizes the plurality of magnetic field generation means during inspection by the inspection means,
The inspection means determines whether the difference between the measurement value of the magnetic field measurement means and the reference value when any one of the plurality of magnetic field generation means is energized is smaller than the threshold value, or all of the magnetic field generation means a game machine, wherein an abnormality is detected when a difference between the measurement value of the magnetic field measuring means and the reference value is equal to or greater than the threshold value when the magnet is not energized. In the gaming machine according to claim 2,
The game area is provided with a winning opening into which game balls can enter,
The magnetic field measuring means is arranged behind the winning opening on the back side of the game board,
A gaming machine, wherein the plurality of magnetic field generating means are arranged on the back side of the gaming board so as to surround the winning opening.

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