JP5513717B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine such as a pachinko gaming machine capable of performing a predetermined game using a game ball.

  As a gaming machine, a game ball, which is a game medium, is launched into a game area by a launching device, and when a game ball wins a prize area such as a prize opening provided in the game area, a predetermined number of prize balls are paid out to the player. There is something to be done. Further, a variable display device capable of variably displaying the identification information (also referred to as “fluctuation”) is provided, and when the display result of the variable display of the identification information becomes a specific display result in the variable display device, the game state (game The state of the machine, more specifically, the state in which the gaming machine is controlled) is configured to give a predetermined game value to the player.

  The game value is the right that the state of the variable winning ball apparatus provided in the gaming area of the gaming machine becomes advantageous for a player who is easy to win, and the right for becoming advantageous for a player. In other words, or a condition for winning a prize ball is easily established.

  In a pachinko machine, a specific display that is determined in advance as a display result of variable display of special symbols (identification information) that is started in the variable display device based on the winning of a game ball in the start winning opening (starting area) When the mode is derived and displayed, a “big hit” occurs. Note that the derivation display is to stop and display a symbol (excluding stop before so-called re-variation). When the big hit occurs, for example, the big winning opening is opened a predetermined number of times, and the game shifts to a big hit gaming state where the hit ball is easy to win. And in each open period, if there is a prize for a predetermined number (for example, 10) of the big prize opening, the big prize opening is closed. An opening time (for example, 29 seconds) is determined for each opening, and even if the number of winnings does not reach a predetermined number, the big winning opening is closed when the opening time elapses. Hereinafter, the opening period of each special winning opening may be referred to as a round.

  As described above, when a game ball wins a prize area, a predetermined number of prize balls are paid out to the player. Further, when the game ball wins the start area, a predetermined number of prize balls are paid out to the player, and the variable display of identification information that may cause a big hit gaming state is started. The material of the game ball used in the pachinko gaming machine is steel. Therefore, an illegal act of guiding the game ball to the winning area (including the starting area) by the magnet may be performed.

  In order to detect fraud using a magnet, there is a gaming machine with a built-in magnet detection function (see, for example, Patent Document 1). The magnet detection function built in the gaming machine described in Patent Document 1 includes a drive mechanism that moves the magnetic sensor in order to eliminate the magnetic detection impossible range of the reed switch as the magnetic sensor for detecting the magnet. Yes.

JP 2008-17889 A (paragraphs 0016-0022)

  When a reed switch is used as the magnetic sensor, the detection range of magnetism (magnetic field) is narrow, and depending on the direction of the magnet (direction of the lines of magnetic force), there is a possibility that magnetism by the magnet cannot be detected. Like the described gaming machine, it is necessary to move the magnetic sensor over a relatively wide range. Then, it is necessary to secure a space for securing the moving range in the gaming machine, but the gaming machine has many circuits and mechanism parts for realizing the original function, so the moving range is secured. It is not easy to do. If an attempt is made to secure the movement range, there is a possibility that the arrangement of circuits and mechanical parts for realizing the original function is restricted and the arrangement of the circuits and mechanical parts may become impossible. In addition, when a reed switch is used, when a strong magnetic field is applied, the contact remains in contact, and the magnet detection function may be impaired.

  Therefore, the present invention provides a gaming machine that can accurately detect the presence of a magnet over a wide range while preventing restrictions on the arrangement of circuits and mechanisms for realizing the original functions of the gaming machine. The purpose is to provide.

The gaming machine according to the present invention is a gaming machine capable of performing a predetermined game using a game ball, and has an impedance of a magnetic field given from the outside to amorphous wires arranged along three axes orthogonal to each other. A magnetic sensor configured to detect a change and output a detection voltage based on each change amount (for example, magnetic field detection element 130: see FIG. 11), and a detection clock output from the magnetic sensor as a drive clock for driving the magnetic sensor An averaging unit that samples and averages at intervals longer than the signal cycle, and a detection voltage output from the averaging unit is a predetermined value (for example, an initial value) with respect to a predetermined value (for example, a three-axis sensor) Magnet determination means (for example, control circuit 180: FIG. 10) that determines that a magnet is present in the vicinity of the gaming machine when it is detected that the sum exceeds 250 mV. B)) and a reference value setting means for inputting the detection voltage of the magnetic sensor and setting the value of the input detection voltage as a reference value when power supply to the gaming machine is started (for example, in FIG. A second averaging unit shown: In particular, when the initial value is stored in the initial value register 231 after “5 seconds after power-on” , the averaging unit has a predetermined period after the power supply to the gaming machine is started. The processing for averaging the detected voltage is started when elapses .

  A game frame (for example, a game frame 2A) installed so as to be openable and closable with respect to the outer frame, and a game board (for example, a plurality of game parts attached to a predetermined plate-like body attached to the game frame detachably) An effect image display device (for example, an effect display device 9) is provided on the game board as a game part, and an effect control means (for example, an effect control microcomputer 100) that controls the image display device is provided. ) Is a gaming machine installed on the back side of the image display device, and a magnetic sensor may be mounted on the effect control board (see FIG. 9A).

A game frame (for example, game frame 2A) installed to be openable and closable with respect to the outer frame, and a plurality of game components (for example, effect display device 9) attached to the game frame in a detachable manner. And a game board (for example, game board 6) to which is attached, a magnetic sensor may be installed in the game frame (see FIG. 9B) .

  According to the first aspect of the present invention, the gaming machine detects a change in impedance due to a magnetic field applied to the amorphous wire arranged along three axes orthogonal to each other, and outputs a detection voltage based on each change amount. A magnetic sensor configured to determine whether a magnet is present in the vicinity of the gaming machine when the detected voltage of the magnetic sensor exceeds a predetermined value relative to a predetermined reference value, and a gaming machine When the power supply to is started, the configuration includes the reference value setting means for inputting the detection voltage of the magnetic sensor and setting the value of the input detection voltage as the reference value. Therefore, it is possible to detect a magnetic field and to accurately detect the presence of a magnet over a wide range.

  In the invention according to claim 2, since the magnetic sensor is mounted on the effect control board, the magnetic sensor is not installed in the game area of the game board, so that the arrangement of the mechanical parts for realizing the original function is not restricted. Can be.

  In the invention of claim 3, since the magnetic sensor is installed in the game frame, the magnetic sensor can be continuously used even if the game board is replaced in the game store, and the cost of the gaming machine can be reduced. it can.

Embodiment 1 FIG.
Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the overall configuration of a pachinko gaming machine 1 that is an example of a gaming machine will be described. FIG. 1 is a front view of the pachinko gaming machine 1 as seen from the front.

  The pachinko gaming machine 1 includes an outer frame (not shown) formed in a vertically long rectangular shape, and a game frame attached to the inside of the outer frame so as to be opened and closed. Further, the pachinko gaming machine 1 has a glass door frame 2 formed in a frame shape that is provided in the game frame so as to be opened and closed. The game frame includes a front frame (not shown) that can be opened and closed with respect to the outer frame, a mechanism plate (not shown) to which mechanism parts and the like are attached, and various parts (games to be described later) attached to them. A structure including the board 6).

  On the lower surface of the glass door frame 2 is a hitting ball supply tray (upper plate) 3. Under the hitting ball supply tray 3, there are provided a surplus ball receiving tray 4 for storing game balls that cannot be accommodated in the hitting ball supply tray 3, and a hitting operation handle (operation knob) 5 for firing the hitting ball. A game board 6 is detachably attached to the back surface of the glass door frame 2. The game board 6 is a structure including a plate-like body constituting the game board 6 and various game parts attached to the plate-like body. In addition, a game area 7 is formed on the front surface of the game board 6 in which a game ball that has been struck can flow down.

  In the vicinity of the center of the game area 7, an effect display device 9 is provided as a game component composed of a liquid crystal display device (LCD). The display screen of the effect display device 9 has a decorative symbol display area for performing variable display of decorative symbols in synchronization with variable symbol special display. Therefore, the effect display device 9 corresponds to a variable display device that performs variable display of decorative symbols. In the decorative symbol display area, for example, three pieces of decoration (production) identification information “left”, “middle”, and “right” are variably displayed so as to move from top to bottom, for example. In the decorative symbol display area, there are “left”, “middle”, and “right” symbol display areas (symbol display lines) 9L, 9C, and 9R. The positions of the symbol display areas 9L, 9C, and 9R are effect display. The display screen of the device 9 may not be fixed, and the three areas of the symbol display areas 9L, 9C, and 9R may be separated. The effect display device 9 is controlled by an effect control microcomputer mounted on the effect control board. When the special control indicator 8 performs variable display of the special symbol, the effect control microcomputer causes the effect display device 9 to execute the effect display along with the variable display, so that the progress of the game can be grasped. Can be easier.

  A special symbol display 8 that variably displays a special symbol as identification information is provided on the left side of the lower part of the game board 6. In this embodiment, the special symbol display 8 is realized by a simple and small display (for example, 7 segment LED) capable of variably displaying numbers 0 to 9. That is, the special symbol display 8 is configured to variably display numbers (or symbols) from 0 to 9.

  The small display is formed in a square shape, for example. In this embodiment, the special symbol display 8 may be configured to variably display a number (or a two-digit symbol) of, for example, 00 to 99.

  A winning device having a first start winning port 13 is provided below the effect display device 9. The game ball won in the first start winning opening 13 is guided to the back of the game board 6 and detected by the first start opening switch 13a.

  A variable winning ball device 15 having a second starting winning port 14 through which a game ball can be won is provided below a winning device having a first starting winning port (first starting port) 13. The game ball that has won the second start winning opening (second start opening) 14 is guided to the back of the game board 6 and detected by the second start opening switch 14a. The variable winning ball device 15 is opened by a solenoid 16. When the variable winning ball device 15 is in the open state, the game ball can be awarded to the second starting winning port 14 (it is easier to start winning), which is advantageous for the player. In addition, in a state where the variable winning ball device 15 is in the closed state, the game ball does not win the second start winning opening 14. In the state where the variable winning ball apparatus 15 is in the closed state, it may be configured that the winning is possible (that is, it is difficult for the gaming ball to win) although it is difficult to win a prize.

  Hereinafter, the first start winning opening 13 and the second start winning opening 14 may be collectively referred to as a start winning opening or a starting opening. When the variable winning ball device 15 is controlled to be in the open state, the game ball heading for the variable winning ball device 15 is very likely to win the second start winning port 14.

  In this embodiment, as shown in FIG. 1, the variable winning ball apparatus 15 that opens and closes only the second start winning opening 14 is provided. Any of the start winning ports 14 may be provided with a variable winning ball device that performs an opening / closing operation.

  On the side of the special symbol display 8 is a special four-display unit that displays the number of effective winning balls that have entered the starting winning opening, that is, the number of reserved memories (holding memory is also referred to as starting memory or starting prize memory). A symbol hold storage indicator 18 is provided. The special symbol storage memory display 18 increases the number of indicators that are turned on by one every time there is an effective start winning. Then, every time variable display on the special symbol display 8 is started, the number of indicators to be turned on is reduced by one.

  In addition, the display screen of the effect display device 9 is provided with an area for displaying the number of reserved memories (hereinafter referred to as a reserved storage display unit 18c).

  The special symbol variable display is a variable display start condition after the start condition which is the variable display execution condition is satisfied (for example, the game ball has won the first start winning opening 13 or the second start winning opening 14). (For example, when the number of reserved memories is not 0 and the special symbol variable display is not executed and the big hit game is not executed) When the display time elapses, the display result (stop symbol) is derived and displayed. Note that winning means that a game ball has entered a predetermined area such as a winning opening. Deriving and displaying the display result means that the symbol (example of identification information) is finally stopped (determined).

  In the special symbol display 8, when a predetermined time (fluctuation time) elapses after the special symbol variable display is started, the special symbol variable display result is stopped (derived display). If it is decided to win, a special special symbol (big hit symbol) is stopped and displayed. If it is determined to be off, special symbols other than the jackpot symbol are stopped and displayed. When the big hit symbol is derived and displayed, the gaming state is controlled to the big hit gaming state as the specific gaming state. In this embodiment, as an example, numbers indicating “3” and “7” are jackpot symbols and symbols indicating “−” are off symbols.

  When the big winning symbol is stopped and displayed on the special symbol display 8, the opening / closing plate in the variable winning ball apparatus 20 generates a predetermined number (for example, 29 seconds) or a predetermined number (for example, ten) of winning balls. In the period up to, a round in which the variable winning ball apparatus 20 is changed to the first state advantageous to the player is started. The number of rounds is, for example, 15.

  In addition, after the big hit gaming state is finished, the gaming state is controlled to the short time state. In the short time state, the variation time of the special symbol in the variable display of the special symbol is shortened compared to the normal state (the state that is not the probability variation state or the short time state). The time-short state is, for example, when one of the conditions is satisfied first, that is, the variable display of a special symbol is executed a predetermined number of times (for example, 100 times) and the variable display result is “big hit”. To finish. In addition, after the big hit state is ended, the normal state may be set instead of the time reduction state.

  When it is determined to control the gaming state to the probability changing state, the gaming state is controlled to the probability changing state after the big hit gaming state ends. The probability variation state continues until, for example, a jackpot symbol is derived and displayed as a variable display result. A special symbol stop symbol derived and displayed when it is determined to control the gaming state to the big hit gaming state is referred to as a big hit symbol. The special symbol stop symbol that is derived and displayed when it is determined not to control the gaming state to the big hit state is referred to as an outlier symbol.

  Further, in the probability variation state, the probability of determining a big hit is higher than in the low probability state (normal state). For example, it is 10 times. Specifically, in the probability variation state, the number of determination values determined to be a big hit when it matches the value of the random number for jackpot determination is 10 times that in the normal state. In addition, the probability that the stop symbol of the normal symbol display 10 becomes a winning symbol is increased. That is, the second start winning opening 14 is easy to open, and a start winning is likely to occur. Specifically, in the probability variation state, the number of determination values determined to be a hit when it matches the value of the random number for determination per normal symbol is larger than that in the normal state. Further, in addition to increasing the probability that the stop symbol of the normal symbol display 10 becomes a winning symbol, the number of opening or the opening time of the variable winning ball device 15 is increased, or the number of opening and the opening time of the variable winning ball device 15 is increased. You may increase. Even in a short time state, the probability that the stop symbol of the normal symbol display 10 becomes a winning symbol is increased, the number of times or the time for opening the variable winning ball device 15 is increased, the number of times the variable winning ball device 15 is opened and released. You may spend more time.

  The effect display device 9 performs variable display of decorative symbols as symbols for decoration (for effects) during the special symbol variable display time by the special symbol indicator 8. The variable display of the special symbol on the special symbol display 8 and the variable display of the decorative symbol on the effect display device 9 are synchronized. Synchronous means that the variable display start time and end time are the same, and the variable display period is the same. When the special symbol display 8 stops and displays the big hit symbol, the effect display device 9 stops and displays the combination of decorative symbols reminiscent of the big hit.

  In the display area of the effect display device 9, on the basis of the start condition being satisfied, the variation of the decorative symbols is started in the “left”, “middle”, and “right” symbol display areas. For example, “left” → The stop symbols of the decorative symbols are stopped and displayed (derived display) in the order of “right” → “middle”.

  The period from the start of variable display of decorative symbols until the stop symbol is derived and displayed in the “left”, “middle”, and “right” symbol display areas (variable display period = variable time). The variable display state may be a predetermined reach state. The reach state is a display state in which the decorative symbols that are not yet stopped and displayed when the decorative symbols that are stopped and displayed in the display area of the effect display device 9 constitute a part of the jackpot combination, or This is a display state in which all or part of the decorative symbols change synchronously while constituting all or part of the jackpot combination. The display effect in the reach state is reach effect display (reach effect).

  Further, as shown in FIG. 1, a special variable winning ball device 20 is provided below the variable winning ball device 15. The special variable winning ball apparatus 20 includes an opening / closing plate, and the opening / closing plate is opened by the solenoid 21 in a specific gaming state (a big hit gaming state) that occurs when a specific display result (a big hit symbol) is derived and displayed on the special symbol display 8. By controlling to the state, the big winning opening which becomes the winning area is opened. The game ball that has won the big winning opening is detected by the count switch 23.

  The game area 6 is also provided with winning ports (ordinary winning ports) 29, 30, 33, and 39 for paying out a predetermined number of premium game balls determined in advance based on winning of the game balls. The game balls won in the winning openings 29, 30, 33, 39 are detected by the winning opening switches 29a, 30a, 33a, 39a.

  A normal symbol display 10 is provided on the right side of the game board 6. The normal symbol display 10 variably displays a plurality of types of identification information (for example, “◯” and “x”) called normal symbols.

  When the game ball passes through the gate 32 and is detected by the gate switch 32a, variable display of the normal symbol display 10 is started. In this embodiment, variable display is performed by alternately lighting the upper and lower lamps (the symbols can be visually recognized when turned on). For example, if the lower lamp is turned on at the end of the variable display, it is a hit. . When the stop symbol on the normal symbol display 10 is a predetermined symbol (winning symbol), the variable winning ball device 15 is opened for a predetermined number of times. In other words, the state of the variable winning ball apparatus 15 is a state that is advantageous from a disadvantageous state for the player when the normal symbol is a stop symbol (a state in which a game ball can be awarded at the second start winning port 14). To change. In the vicinity of the normal symbol display 10, a normal symbol holding storage display 41 having a display unit with four LEDs for displaying the number of winning balls that have passed through the gate 32 is provided. Each time there is a game ball passing through the gate 32, that is, every time a game ball is detected by the gate switch 32a, the normal symbol storage memory display 41 increases the number of LEDs to be turned on by one. Each time variable display on the normal symbol display 10 is started, the number of LEDs to be lit is reduced by one. Further, in the probability variation state where the probability of being determined to be a big hit as compared to the normal state is high, the probability that the stop symbol in the normal symbol display 10 becomes a winning symbol is increased, and the variable winning ball apparatus 15 Opening time and opening times are increased. Even in the short state (the game state in which the variable display time of the special symbol is shortened) when the symbol variation time is shortened although it is not the probability variation state, the opening time and the number of times of opening of the variable winning ball device 15 are increased.

  A decorative lamp (LED may be used) 25 flashed and displayed during the game is provided around the left and right of the game area 7 of the game board 6, and an out port 26 into which a hit ball that has not won a prize is taken in at the bottom. . In addition, two speakers 27 that utter sound effects and sounds as predetermined sound outputs are provided on the left and right upper portions outside the game area 7. On the outer periphery of the game area 7, a frame lamp (or LED) 28 provided on the front frame is provided.

  In the gaming machine, a ball striking device (not shown) that drives a driving motor in response to a player operating the batting operation handle 5 and uses the rotational force of the driving motor to launch a gaming ball to the gaming area 7. ) Is provided. A game ball launched from the ball striking device enters the game area 7 through a ball striking rail formed in a circular shape so as to surround the game area 7, and then descends the game area 7. If the game ball enters the first start winning opening 13 or the second start winning opening 14 and is detected by the first start opening switch 13a or the second start opening switch 14a, it is in a state where variable symbol display can be started ( For example, when the special symbol variable display is completed and the start condition is satisfied), the decorative display variable display is started on the effect display device 9. In other words, the variable display of the special symbol and the decorative symbol corresponds to winning at the start winning opening. If the special symbol variable display cannot be started, the number of reserved memories is increased by 1 on the condition that the number of reserved memories has not reached the upper limit.

  FIG. 2 is a block diagram showing an example of the circuit configuration of the main board (game control board) 31. FIG. 2 also shows a payout control board 37, an effect control board 80, and the like. A game control microcomputer (corresponding to game control means) 560 for controlling the pachinko gaming machine 1 according to a program is mounted on the main board 31. The game control microcomputer 560 includes a ROM 54 for storing a game control (game progress control) program and the like, a RAM 55 as storage means used as a work memory, a CPU 56 for performing control operations in accordance with the program, and an I / O port unit 57. including. In this embodiment, the ROM 54 and the RAM 55 are built in the game control microcomputer 560. That is, the game control microcomputer 560 is a one-chip microcomputer. The one-chip microcomputer only needs to incorporate at least the CPU 56 and the RAM 55, and the ROM 54 may be external or built-in. The I / O port unit 57 may be externally attached. The game control microcomputer 560 further includes a random number circuit 503 that generates hardware random numbers (random numbers generated by the hardware circuit).

  The RAM 55 is a backup RAM as a non-volatile storage means, part or all of which is backed up by a backup power source created on the power supply substrate 910. That is, even if the power supply to the gaming machine is stopped, a part or all of the contents of the RAM 55 is stored for a predetermined period (until the capacitor as the backup power supply is discharged and the backup power supply cannot be supplied). In particular, at least data (a special symbol process flag or the like) corresponding to the game state, that is, the control state of the game control means, and data indicating the number of unpaid winning balls are stored in the backup RAM. The data corresponding to the control state of the game control means is data necessary for restoring the control state before the occurrence of a power failure or the like based on the data when the power is restored after a power failure or the like occurs. Further, data corresponding to the control state and data indicating the number of unpaid prize balls are defined as data indicating the progress state of the game. In this embodiment, it is assumed that the entire RAM 55 is backed up.

  In the game control microcomputer 560, the CPU 56 executes control in accordance with the program stored in the ROM 54, so that the game control microcomputer 560 (or CPU 56) executes (or performs processing) hereinafter. Specifically, the CPU 56 executes control according to a program. The same applies to microcomputers mounted on substrates other than the main substrate 31.

  The random number circuit 503 is a hardware circuit that is used to generate a random number for determination to determine whether or not to win a jackpot based on a display result of variable symbol special display. The random number circuit 503 updates numerical data in accordance with a set update rule within a numerical range in which an initial value (for example, 0) and an upper limit value (for example, 65535) are set, and starts at a random timing Based on the fact that the winning time is the reading (extraction) of the numerical data, it has a random number generation function in which the numerical data to be read becomes a random value.

  Also, an input driver circuit for supplying detection signals from the gate switch 32a, the first start port switch 13a, the second start port switch 14a, the count switch 23, and the winning port switches 29a, 30a, 33a and 39a to the game control microcomputer 560. 58 is also mounted on the main board 31. The main board also includes an output circuit 59 for driving the solenoid 16 for opening and closing the variable winning ball device 15 and the solenoid 21 for opening and closing the special variable winning ball device 20 that forms a big winning opening in accordance with a command from the game control microcomputer 560. 31.

  Further, the game control microcomputer 560 includes a special symbol display 8 that variably displays special symbols (variable display), a normal symbol display 10 that variably displays normal symbols, a special symbol hold memory display 18 and a normal symbol hold memory. Display control of the display 41 is performed.

  An information output circuit (not shown) that outputs an information output signal such as jackpot information indicating the occurrence of a jackpot gaming state to an external device such as a hall computer is also mounted on the main board 31.

  In this embodiment, the effect control means (configured by the effect control microcomputer) mounted on the effect control board 80 instructs the effect contents from the game control microcomputer 560 via the relay board 77. The effect control command is received, and display control of the effect display device 9 for variably displaying the decorative design is performed.

  Further, the effect control means mounted on the effect control board 80 controls the display of the decorative lamp 25 provided on the game board, the frame lamp 28 provided on the frame side, and the like via the lamp driver board 35. In addition, the sound output from the speaker 27 is controlled via the sound output board 70.

  FIG. 3 is a block diagram illustrating a circuit configuration example of the relay board 77, the effect control board 80, the lamp driver board 35, and the audio output board 70. In the example shown in FIG. 3, the lamp driver board 35 and the audio output board 70 are not equipped with a microcomputer, but may be equipped with a microcomputer. Further, without providing the lamp driver board 35 and the audio output board 70, only the effect control board 80 may be provided for effect control. When only the effect control board 80 is provided, the circuits and the like mounted on the lamp driver board 35 and the audio output board 70 shown in FIG. 3 are also mounted on the effect control board 80.

  The effect control board 80 is equipped with an effect control microcomputer 100 including an effect control CPU 101 and an RAM for storing information related to effects such as an effect control process flag. The RAM may be externally attached. In this embodiment, the RAM in the production control microcomputer 100 is not backed up. In the effect control board 80, the effect control CPU 101 operates in accordance with a program stored in a built-in or external ROM (not shown), and receives a capture signal from the main board 31 input via the relay board 77 ( In response to the (effect control INT signal), an effect control command is received via the input driver 102 and the input port 103. Further, the effect control CPU 101 causes the VDP (video display processor) 109 to perform display control of the effect display device 9 based on the effect control command.

  In this embodiment, a VDP 109 that performs display control of the effect display device 9 in cooperation with the effect control microcomputer 100 is mounted on the effect control board 80. The VDP 109 has an address space independent of the production control microcomputer 100, and maps a VRAM therein. VRAM is a buffer memory for developing image data. Then, the VDP 109 outputs the image data in the VRAM to the effect display device 9 via the frame memory.

  The effect control CPU 101 outputs to the VDP 109 a command for reading out necessary data from a CGROM (not shown) in accordance with the received effect control command. The CGROM stores in advance character image data and moving image data to be displayed on the effect display device 9, specifically, a person, characters, figures, symbols, etc. (including decorative symbols), and background image data. ROM. The VDP 109 reads image data from the CGROM in response to the instruction from the effect control CPU 101. The VDP 109 executes display control based on the read image data.

  The effect control command and the effect control INT signal are first input to the input driver 102 on the effect control board 80. The input driver 102 passes the signal input from the relay board 77 only in the direction toward the inside of the effect control board 80 (does not pass the signal in the direction from the inside of the effect control board 80 to the relay board 77). It is also a unidirectional circuit as a regulating means. An output port 571 shown in FIG. 3 is a part of the I / O port unit 57 shown in FIG.

  Further, the effect control CPU 101 outputs a signal for driving the lamp to the lamp driver board 35 via the output port 105. Further, the production control CPU 101 outputs sound number data to the audio output board 70 via the output port 104.

  In the lamp driver board 35, a signal for driving the lamp is input to the lamp driver 352 via the input driver 351. The lamp driver 352 supplies a current to a light emitter provided on the frame side such as the frame lamp 28 based on a signal for driving the lamp. In addition, a current is supplied to the decorative lamp 25 provided on the game board side.

  In the voice output board 70, the sound number data is input to the voice synthesis IC 703 via the input driver 702. The voice synthesizing IC 703 generates voice or sound effect according to the sound number data and outputs it to the amplifier circuit 705. The amplification circuit 705 outputs an audio signal obtained by amplifying the output level of the speech synthesis IC 703 to a level corresponding to the volume set by the volume 706 to the speaker 27. The voice data ROM 704 stores control data corresponding to the sound number data. The control data corresponding to the sound number data is a collection of data indicating the sound effect or sound output mode in a time series in a predetermined period (for example, a decorative symbol variation period).

  For example, digital data of sound effects (including sound and music) within a predetermined period is stored in the sound data ROM 704 as control data corresponding to sound number data. For example, PCM data is used as the digital data. In this case, the sound effect for one second is represented by 8 bits × 8k (8000) = 64 kbits. In this example, PCM data is used as an example, but other types of digital audio data such as ADPCM data may be used.

  The effect control board 80 is configured to detect a change in impedance due to a magnetic field applied to the amorphous wire arranged along three axes orthogonal to each other and output a detection voltage based on each change amount. A magnetic field detection element (magnetic sensor) 130 and a magnetic field detection circuit 140 for determining whether or not a magnet is present in the vicinity of the gaming machine based on a detection voltage of the magnetic field detection element 130 are provided. The amorphous wire is an amorphous magnetic material formed in a thin line shape (for example, a thickness of 100 μm).

  The magnetic field detection circuit 140 outputs an error signal when it is determined that the magnet exists in the vicinity of the gaming machine. The error signal is input to the effect control CPU 101 via the input port 107. When the error signal is input, the effect control CPU 101 uses an effect device provided in the gaming machine (effect display device 9, speaker 27, LED, etc.) to notify the abnormality (notice of fraudulent discovery). I do.

  When an illegal act of guiding a game ball to a winning area (in particular, a start winning opening) by a magnet is performed, the magnet exists in the vicinity of the gaming machine 1. When the magnetic field detection circuit 140 determines that there is a magnet in the vicinity of the gaming machine, the effect control CPU 101 executes control to notify the abnormality, so that the cheating is performed or the cheating is performed. When there is a possibility, a game store clerk or the like can be made aware of this by anomaly notification.

  Next, the operation of the gaming machine will be described. FIG. 4 is a flowchart showing a main process executed by the game control microcomputer 560 on the main board 31. When power is supplied to the gaming machine and power supply is started, the input level of the reset terminal to which the reset signal is input becomes high level, and the gaming control microcomputer 560 (specifically, the CPU 56) After executing a security check process, which is a process for confirming whether the contents of the program are valid, the main process after step S1 is started. In the main process, the CPU 56 first performs necessary initial settings.

  In the initial setting process, the CPU 56 first sets the interrupt prohibition (step S1). Next, the interrupt mode is set to interrupt mode 2 (step S2), and a stack pointer designation address is set to the stack pointer (step S3). Then, after initialization of the built-in device (CTC (counter / timer) and PIO (parallel input / output port) which are built-in devices (built-in peripheral circuits)) is performed (step S4), the RAM 55 is accessible. (Step S5). In interrupt mode 2, the address synthesized from the value (1 byte) of the specific register (I register) built in the CPU 56 and the interrupt vector (1 byte: least significant bit 0) output from the built-in device is This mode indicates an interrupt address.

  Next, the CPU 56 checks the state of the output signal of the clear switch (for example, mounted on the power supply board) input via the input port (step S6). When the on-state is detected in the confirmation, the CPU 56 executes normal initialization processing (steps S10 to S15).

  If the clear switch is not on, check whether data protection processing of the backup RAM area (for example, power supply stop processing such as addition of parity data) was performed when power supply to the gaming machine was stopped (Step S7). When it is confirmed that such protection processing is not performed, the CPU 56 executes initialization processing. Whether there is backup data in the backup RAM area is confirmed, for example, by the state of the backup flag set in the backup RAM area in the power supply stop process.

  When it is confirmed that the power supply stop process has been performed, the CPU 56 performs data check of the backup RAM area (step S8). In this embodiment, a parity check is performed as a data check. Therefore, in step S8, the calculated checksum is compared with the checksum calculated and stored by the same process in the power supply stop process. When the power supply is stopped after an unexpected power failure or the like, the data in the backup RAM area should be saved, so the check result (comparison result) is normal (matched). That the check result is not normal means that the data in the backup RAM area is different from the data when the power supply is stopped. In such a case, since the internal state cannot be returned to the state when the power supply is stopped, an initialization process that is executed when the power is turned on is not performed when the power supply is stopped.

  If the check result is normal, the CPU 56 recovers the game state restoration process (steps S41 to S43) for returning the internal state of the game control means and the control state of the electrical component control means such as the effect control means to the state when the power supply is stopped. Process). Specifically, the start address of the backup setting table stored in the ROM 54 is set as a pointer (step S41), and the contents of the backup setting table are sequentially set in the work area (area in the RAM 55) (step S42). ). The work area is backed up by a backup power source. In the backup setting table, initialization data for an area that may be initialized in the work area is set. As a result of the processing in steps S41 and S42, the saved contents of the work area that should not be initialized remain as they are. The part that should not be initialized is, for example, data indicating the gaming state before the power supply is stopped (special symbol process flag, probability variation flag, time reduction flag, etc.), and the area where the output state of the output port is saved (output port buffer) ), A portion in which data indicating the number of unpaid prize balls is set.

  Further, the CPU 56 transmits a power failure recovery designation command as an initialization command at the time of power supply recovery to the effect control board 80 (step S43). Then, the process proceeds to step S14.

  In the initialization process, the CPU 56 first performs a RAM clear process (step S10). The RAM clear process initializes predetermined data (for example, count value data of a counter for generating a big hit determination random number) to 0, but is initialized to an arbitrary value or a predetermined value. You may make it do. Alternatively, the entire area of the RAM 55 may not be initialized, and predetermined data (for example, count value data of a counter for generating a big hit determination random number) may be left as it is. Further, the initial address of the initialization setting table stored in the ROM 54 is set as a pointer (step S11), and the contents of the initialization setting table are sequentially set in the work area in the RAM 55 (step S12).

  By the processing in steps S11 and S12, an initial value is set to a flag for selectively performing processing according to the control state, such as a special symbol process flag.

  Further, the CPU 56 initializes a sub board (a board on which a microcomputer other than the main board 31 is mounted) (a command indicating that the game control microcomputer 560 has executed an initialization process). Is also transmitted to the effect control board 80 (step S13). For example, when the effect control microcomputer 100 mounted on the effect control board 80 receives the initialization designation command, the effect display device 9 displays a screen for notifying that the control of the gaming machine has been initialized. Display, that is, initialization notification. In the initialization process, the CPU 56 also transmits a customer waiting demonstration designation (demonstration) command.

  Further, the CPU 56 executes a random number circuit setting process for initial setting of the random number circuit 503 (step S14). For example, the CPU 56 performs setting according to the random number circuit setting program to cause the random number circuit 503 to update the value of the random R.

  Then, the CPU 56 sets a CTC register built in the game control microcomputer 560 so that a timer interrupt is periodically taken every predetermined time (for example, 2 ms) (step S15). That is, a value corresponding to, for example, 2 ms is set in a predetermined register (time constant register) as an initial value. In this embodiment, it is assumed that a timer interrupt is periodically taken every 2 ms.

  When the execution of the initialization process (steps S10 to S15) is completed, the CPU 56 repeatedly executes the display random number update process (step S17) and the initial value random number update process (step S18) in the main process. When executing the display random number update process and the initial value random number update process, the interrupt disabled state is set (step S16). When the display random number update process and the initial value random number update process are finished, the interrupt enabled state is set. Set (step S19). In this embodiment, the display random number is a random number for determining a variation pattern or the like, and the display random number update process is a process for updating the count value of the counter for generating the display random number. . The initial value random number update process is a process for updating the count value of the counter for generating the initial value random number. In this embodiment, the initial value random number is an initial value of a count value such as a counter for generating a random number for determining whether or not to hit a normal symbol (normal symbol determination random number generation counter). It is a random number for determining. A game control process for controlling the progress of the game, which will be described later (the game control microcomputer 560 controls game devices such as a variable display device, a variable winning ball device, a ball payout device, etc. provided in the game machine itself. In a process for transmitting a command signal to cause another microcomputer to control, or a game device control process), the count value of the random number generation counter for jackpot determination or the like is one round (minimum value that can be taken by random numbers) When the value is incremented by the number of values between the value and the maximum value), an initial value is set in the counter.

  When the timer interrupt occurs, the CPU 56 executes the timer interrupt process of steps S20 to S34 shown in FIG. In the timer interrupt process, first, a power-off detection process for detecting whether or not a power-off signal is output (whether or not an on-state is turned on) is executed (step S20). The power-off signal is output, for example, when a power supply monitoring circuit mounted on the power supply board detects a decrease in the voltage of the power supplied to the gaming machine. In the power-off detection process, when detecting that the power-off signal has been output, the CPU 56 executes a power supply stop process for saving necessary data in the backup RAM area. Next, detection signals from the gate switch 32a, the first start port switch 13a, the second start port switch 14a, the count switch 23, and the winning port switches 29a, 30a, 33a, and 39a are input via the input driver circuit 58, These state determinations are performed (switch processing: step S21).

  Next, the CPU 56 executes display control processing for performing display control of the special symbol display 8, the normal symbol display 10, the special symbol hold storage display 18, and the normal symbol hold storage display 41 (step S22). For the special symbol display 8 and the normal symbol display 10, control for outputting a drive signal to each display is executed according to the contents of the output buffer set in steps S32 and S33.

  Further, a process of updating the count value of each counter for generating each random number for determination such as a random number for determining a normal winning symbol used for game control is performed (determination random number update process: step S23). The CPU 56 further performs a process of updating the count value of the counter for generating the initial value random number and the display random number (initial value random number update process, display random number update process: steps S24 and S25).

  In this embodiment, the big hit determination random number (random R) is a random number generated by the hardware incorporated in the game control microcomputer 560. However, the big hit determination random number is determined by the game control microcomputer 560 as the big hit determination random number. Software random numbers generated based on a program may be used.

  Further, the CPU 56 performs special symbol process processing (step S26). In the special symbol process, the corresponding symbol is executed in accordance with a special symbol process flag for controlling the special symbol display 8 and the special winning award in a predetermined order. The CPU 56 updates the value of the special symbol process flag according to the gaming state.

  Next, normal symbol process processing is performed (step S27). In the normal symbol process, the CPU 56 executes a corresponding process according to the normal symbol process flag for controlling the display state of the normal symbol display 10 in a predetermined order. The CPU 56 updates the value of the normal symbol process flag according to the gaming state.

  Further, the CPU 56 performs a process of sending an effect control command to the effect control microcomputer 100 (effect control command control process: step S28).

  Further, the CPU 56 performs information output processing for outputting data such as jackpot information, start information, probability variation information supplied to the hall management computer, for example (step S29).

  Further, the CPU 56 performs prize ball processing for setting the number of prize balls based on detection signals from the first start port switch 13a, the second start port switch 14a, the count switch 23, and the winning port switches 29a, 30a, 33a, 39a. Execute (Step S30). Specifically, the payout control is performed in accordance with winning detection based on any one of the first starting port switch 13a, the second starting port switch 14a, the count switch 23, and the winning port switches 29a, 30a, 33a, 39a being turned on. A payout control command (award ball number signal) indicating the number of winning balls is output to a payout control microcomputer mounted on the substrate 37. The payout control microcomputer drives the ball payout device 97 in response to a payout control command indicating the number of winning balls.

  In this embodiment, a RAM area (output port buffer) corresponding to the output state of the output port is provided. However, the CPU 56 relates to on / off of the solenoid in the RAM area corresponding to the output state of the output port. The contents are output to the output port (step S31: output process).

  Further, the CPU 56 performs special symbol display control processing for setting special symbol display control data for effect display of the special symbol in the output buffer for setting the special symbol display control data according to the value of the special symbol process flag ( Step S32). For example, if the variation speed is 1 frame / 0.2 seconds until the end flag is set when the start flag set in the special symbol process is set, the CPU 56, for example, every 0.2 seconds passes. Then, the value of the display control data set in the output buffer is incremented by one. Further, the CPU 56 performs variable display of the special symbol on the special symbol display 8 by outputting a drive signal in step S22 according to the display control data set in the output buffer.

  Further, the CPU 56 performs a normal symbol display control process for setting normal symbol display control data for effect display of the normal symbol in an output buffer for setting the normal symbol display control data according to the value of the normal symbol process flag ( Step S33). For example, when the start flag related to the variation of the normal symbol is set, the CPU 56 switches the display state (“◯” and “×”) for the variation rate of the normal symbol every 0.2 seconds until the end flag is set. With such a speed, the value of the display control data set in the output buffer (for example, 1 indicating “◯” and 0 indicating “x”) is switched every 0.2 seconds. Further, the CPU 56 outputs a normal signal on the normal symbol display 10 by outputting a drive signal in step S22 according to the display control data set in the output buffer.

  Thereafter, the interrupt permission state is set (step S34), and the process is terminated.

  With the above control, in this embodiment, the game control process is started every 2 ms. The game control process corresponds to the processes in steps S21 to S33 (excluding step S29) in the timer interrupt process. In this embodiment, the game control process is executed by the timer interrupt process. However, in the timer interrupt process, for example, only a flag indicating that an interrupt has occurred is set, and the game control process is performed by the main process. May be executed.

  Next, the operation of the effect control means will be described. FIG. 6 is a flowchart showing main processing executed by the effect control microcomputer 100 (specifically, the effect control CPU 101) as effect control means mounted on the effect control board 80. The effect control CPU 101 starts executing the main process when the power is turned on. In the main processing, first, initialization processing is performed for clearing the RAM area, setting various initial values, and initializing a timer for determining the activation control activation interval (for example, 2 ms) (step S701). . Thereafter, the effect control CPU 101 executes a random number update process for updating the counter value of a counter for generating a predetermined random number (step S702). Then, the timer interrupt flag is monitored (step S703). If the timer interrupt flag is not set, the process proceeds to step S702. When a timer interrupt occurs, the effect control CPU 101 sets a timer interrupt flag in the timer interrupt process. If the timer interrupt flag is set, the effect control CPU 101 clears the flag (step S704), and executes the effect control process in steps S705 to S706 and the fraud detection process in step S707.

  In the effect control process, the effect control CPU 101 first analyzes the received effect control command and performs a process of setting a flag according to the received effect control command (command analysis process: step S705). Next, the effect control CPU 101 performs effect control process processing (step S706). In the effect control process, the process corresponding to the current control state (effect control process flag) is selected from the processes corresponding to the control state, and display control of the effect display device 9 is executed.

  Further, the production control CPU 101 confirms whether or not the error signal from the magnetic field detection circuit 140 indicates an abnormal state (a state in which the magnet is detected) in the fraud detection process in step S707, and the error signal indicates the abnormal state. If so, the abnormality notification is performed using the effect device.

  FIG. 7 is a flowchart showing the effect control process (step S706) in the main process shown in FIG. In the effect control process, the effect control CPU 101 performs any one of steps S800 to S807 in accordance with the value of the effect control process flag. In each process, the following process is executed.

  Fluctuation pattern command reception waiting process (step S800): This process is executed when the value of the effect control process flag is a value corresponding to the fluctuation pattern command reception waiting process (step S800). In the variation pattern command reception waiting process, it is confirmed whether or not a variation pattern command is received from the game control microcomputer 560. Specifically, it is confirmed whether or not the variation pattern command reception flag set in the command analysis process is set. If a variation pattern command has been received, the value of the effect control process flag is updated to a value corresponding to the decorative symbol variation start process (step S801).

  Decoration symbol variation start process (step S801): This is executed when the value of the effect control process flag is a value corresponding to the decoration symbol variation start process (step S801). In the decorative symbol variation start process, control is performed so that the decorative symbol and the variation of the decorative symbol are started. Then, the value of the effect control process flag is updated to a value corresponding to the decorative symbol changing process (step S802).

  Decoration design changing process (step S802): This is executed when the value of the effect control process flag is a value corresponding to the decoration design changing process (step S802). In the decorative symbol variation process, the switching timing of each variation state (variation speed) constituting the variation pattern is controlled, and the end of the variation time is monitored. When the variation time ends, the value of the effect control process flag is updated to a value corresponding to the decorative symbol variation stop process (step S803).

  Decoration symbol variation stop process (step S803): This is executed when the value of the effect control process flag is a value corresponding to the decoration symbol variation stop process (step S803). In the decorative symbol variation stop process, the variation of the decorative symbol (and decorative symbol) is stopped and the display result (stop symbol) is derived based on the reception of the effect control command (design fixed designation command) that instructs all symbols to stop. Control the display. Then, the value of the effect control process flag is updated to a value corresponding to the jackpot display process (step S804) or the variation pattern command reception waiting process (step S800).

  Jackpot display process (step S804): This process is executed when the value of the effect control process flag is a value corresponding to the jackpot display process (step S804). In the big hit display process, after the variation time is over, the effect display device 9 is controlled to display a screen for notifying the occurrence of the big hit. Then, the value of the effect control process flag is updated to a value corresponding to the in-round processing (step S805).

  In-round processing (step S805): executed when the value of the effect control process flag is a value corresponding to the in-round processing (step S805). In the in-round processing, display control is performed during the round. If the round end condition is satisfied, if the final round has not ended, the value of the effect control process flag is updated to a value corresponding to the post-round processing (step S806). If the final round has ended, the value of the effect control process flag is updated to a value corresponding to the jackpot end effect process (step S807).

  Post-round processing (step S806): executed when the value of the effect control process flag is a value corresponding to the post-round processing (step S806). In post-round processing, display control between rounds is performed. When the round start condition is satisfied, the value of the effect control process flag is updated to a value corresponding to the in-round process (step S805).

  Big hit end effect process (step S807): This is executed when the value of the effect control process flag is a value corresponding to the big hit end effect process (step S807). In the big hit end effect process, the effect display device 9 performs display control for notifying the player that the big hit game state has ended. Then, the value of the effect control process flag is updated to a value corresponding to the variation pattern command reception waiting process (step S800).

  FIG. 8 is a flowchart showing the fraud detection process in step S707. In the fraud detection process, the production control CPU 101 checks whether or not an abnormality notification flag indicating that abnormality notification (injustice detection notification) is being executed is set (step S901). If the abnormality notification flag is set, the process ends.

  If the abnormality notification flag is not set, it is confirmed whether or not the error signal from the magnetic field detection circuit 140 is in a state (for example, high level) corresponding to magnetic field detection (magnet detection) (step S902). ). Hereinafter, an error signal corresponding to magnetic field detection (magnet detection) is referred to as an error signal being output, and an error signal corresponds to magnetic field non-detection (magnet non-detection) (for example, The error signal is not output.

  When the error signal is output, the effect display device 9 is controlled to display, for example, an image indicating “magnet discovery” or an image indicating abnormality detection (step S903). Further, the sound number data corresponding to the abnormality notification sound is output to the sound output board 70 so that the abnormality notification sound is output from the speaker 27 (step S904). Then, an abnormality notification flag is set (step S905).

  If a magnet that can be used for fraudulent acts such as illegally guiding a game ball to the winning area or a magnet used for fraudulent activity is found through the above process, a display will be displayed. An abnormality notification is made in the device 9, and at the same time, an abnormality notification sound is output from the speaker 27.

  When an error signal is output from the magnetic field detection circuit 140, the abnormality notification may be performed using only the effect display device 9, or the abnormality notification may be performed using only the speaker 27. Also, abnormality notification is performed using another effect device (for example, a light emitter such as an LED), or the effect display device 9 and the speaker 27 are combined with another effect device (for example, a light emitter such as an LED). May be.

  In this embodiment, when an error signal is output from the magnetic field detection circuit 140, abnormality notification is continuously executed until the power supply to the gaming machine is stopped. However, when no error signal is output from the magnetic field detection circuit 140 (when the error signal is in a state corresponding to magnetic field undetected (magnet not detected)), the abnormality notification may be terminated. Further, the abnormality notification may be terminated based on a predetermined switch provided in the gaming machine being pressed.

  FIG. 9 is an explanatory diagram for explaining an installation position of the magnetic field detection element (magnetic sensor) 130. In this embodiment, as shown in FIG. 9A, the magnetic field detection element 130 is mounted on the effect control board 80. That is, the magnetic field detection element 130 is mounted on the effect control board 80 on which effect control means (the effect control microcomputer 100) for controlling the effect display device 9 provided on the game board 6 is mounted. The effect control board 80 is installed on the back side of the effect display device 9 (the player side is the front side). Since the magnetic field detection element 130 is not installed in the game area of the game board 6, it is possible not to restrict the arrangement or the like of the mechanical parts for realizing the original function on the game board 6. In FIG. 9A, a broken-line circle indicates a magnetic field detectable range of the magnetic field detection element 130. The magnetic field detectable range of the magnetic field detecting element 130 covers almost the entire inside of the guide rail 61 (game area 7) for guiding a game ball provided on the front surface of the game board 6.

  As shown in FIG. 9B, the magnetic field detection element 130 may be provided in the game frame 2A. That is, the magnetic field detection element 130 may be provided in the game frame 2A to which the game board 6 is detachably attached. Since the magnetic field detection element 130 is installed in the game frame 2A to which the game board 6 is detachably attached, the magnetic field detection element 130 can be continuously used even if the game board 6 is replaced in the game store. The cost of the gaming machine can be reduced. In the example shown in FIG. 9B, the magnetic field detection element 130 is installed at a relatively upper portion of the game frame 2A, but may be installed at other locations such as the vicinity of the hitting ball supply tray 3.

  Further, the installation position of the magnetic field detection element 130 is not limited to the game board 6 or the game frame 2A, but is installed on a circuit board (main board 31, effect control board 80, payout control board 37, etc.) provided in the gaming machine. Alternatively, a dedicated board may be provided separately from the circuit board, and the magnetic field detection element 130 may be installed on the board.

  FIG. 10 is a block diagram showing a configuration example of the magnetic field detection circuit 140 together with the magnetic field detection element 130. The configuration example shown in FIG. 10A corresponds to the first embodiment. In the first embodiment, the magnetic field detection circuit 140 includes a comparison circuit 150 and a control circuit 170. The comparison circuit 150 receives the detection voltage (voltage signal which is an analog signal) output from the magnetic field detection element 130, compares the detection voltage with a predetermined value, and detects the detection signal when the detection voltage is within a predetermined range. Is output. The detection signal is output to the effect control microcomputer 100 as an error signal via the control circuit 170.

  As the control circuit 170, a microcontroller (for example, MSP430F2002 manufactured by Texas Instruments) that performs a control operation according to a program can be used. Further, as the comparison circuit 150, a comparison circuit built in the microcontroller may be used.

  The magnetic field detection circuit 140 detects a change in impedance due to a magnetic field externally applied to the amorphous wire arranged along three axes (X axis, Y axis, Z axis) orthogonal to each other, and sets each change amount. The control circuit 170 has a function of outputting an XYZ selection signal to the magnetic field detection circuit 140. The XYZ selection signal outputs a detection voltage from any of the X-axis detection element (X-axis sensor), the Y-axis detection element (Y-axis sensor), and the Z-axis detection element (Z-axis sensor). It is a signal for selecting whether or not.

  The configuration example shown in FIG. 10B corresponds to the second embodiment. In the second embodiment, the magnetic field detection circuit 140 includes a control circuit 180. As the control circuit 180, a microcontroller can be used as in the control circuit 170 in the first embodiment.

  The control circuit 180 has a built-in A / D converter 160. The AD converter 160 converts the detection voltage, which is an analog signal output from the magnetic field detection element 130, into a digital signal. In addition to the function of outputting the XYZ selection signal, the control circuit 180 has an initial value setting function, a detection voltage averaging function, and a comparison function with the initial value. When a microcontroller is used as the control circuit 180, these functions are realized by a program.

  The initial value setting function is a function for setting an initial value to be compared with the detection voltage output from the magnetic field detection element 130. The detection voltage averaging function is a function for averaging the detection voltage output from the magnetic field detection element 130 over time. The comparison function with the initial value is a function for comparing the detection voltage output from the magnetic field detection element 130 with the initial value. When the amount of change from the initial value of the detection voltage output by the magnetic field detection element 130 exceeds a predetermined amount, the control circuit 180 outputs an error signal to the effect control microcomputer 100.

  The configuration example shown in FIG. 10C corresponds to the third embodiment. In the third embodiment, the magnetic field detection circuit 140 includes a control circuit 190. As the control circuit 190, a microcontroller can be used as in the control circuit 170 in the first embodiment.

  In addition to the function of outputting the XYZ selection signal, the control circuit 190 has an initial value setting function, a magnetic force line direction detection function, and a magnet position estimation function. When a microcontroller is used as the control circuit 190, these functions are realized by a program.

  The initial value setting function is the same function as the initial value setting function in the second embodiment. The magnetic force line direction detection function detects the presence of a magnetic generator such as a magnet based on the detection voltage output from the magnetic field detection element 130, and when it detects the presence of a magnet, the direction of the magnetic force line of the magnet is detected. It is a function to detect. The magnet position estimation function determines whether a magnetic generator (eg, a magnet) exists on the front or back of the gaming machine based on the direction of the magnetic field lines, and generates magnetism in a specific area on the front of the gaming machine. This is a function for determining that there is a magnet that may be used for fraud or a magnet that is used for fraud when it is determined that a body exists. If the control circuit 190 determines that a magnet is present, the control circuit 190 outputs an error signal to the effect control microcomputer 100.

  FIG. 11A is a block diagram illustrating a configuration example of the magnetic field detection element 130. In the example shown in FIG. 11A, the magnetic field detection element 130 includes an oscillator 131 that outputs a clock signal in addition to the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z, and the clock signal from the oscillator 131. A timing control circuit 132 that outputs to the X-axis sensor 13X, Y-axis sensor 13Y, or Z-axis sensor 13Z, and a reference voltage generator connected to the output side of the X-axis sensor 13X, Y-axis sensor 13Y, and Z-axis sensor 13Z The clock output selection signal is output to the timing control circuit 132 in accordance with the selection signal input to the device 133 and the input terminals CH1 and CH2, and the detection voltage of the X-axis sensor 13X, the Y-axis sensor 13Y or the Z-axis sensor 13Z is input. Sample hold circuit (selection circuit) 134 to be detected, and detection voltage input by the sample hold circuit 134 It amplifies and having a differential amplifier 135 to be output.

  As shown in FIG. 11B, the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z are arranged so that the axial directions are orthogonal to each other (see FIG. 11C). Further, the axes of the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z are amorphous wires, and in the example shown in FIG. 11A, a coil wound around the amorphous wires is given to the amorphous wires from the outside. A change in impedance due to a magnetic field is detected, and a detection voltage having a voltage value corresponding to the change in impedance is output. Note that the member for detecting the change in impedance may be a coil installed in the vicinity of the amorphous wire, not a coil wound around the amorphous wire.

Embodiment 1 FIG.
FIG. 12 is an explanatory diagram for explaining the operation of the comparison circuit 150 (see FIG. 10A) in the first embodiment.

  As shown in FIG. 12A, when there is no external magnetic field, each of the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z (hereinafter referred to as a sensor) has a detection voltage of 1.5V. Take the case of output as an example. Further, it is assumed that the sensor has a characteristic that fluctuates in a range of 0.8 to 1.9 V when an external magnetic field is not present due to element variation or the like.

  Therefore, in the first embodiment, when the detection voltage of the sensor is in the range of 0.8 to 1.9 V, it is determined that there is no external magnetic field. That is, the range of 0.8 to 1.9 V is set as an error range for magnetic field detection.

  Furthermore, in order to eliminate the influence of geomagnetism, the error range for magnetic field detection is further expanded. The magnitude of geomagnetism in the Japanese archipelago is 44000-51000 nT. If the sensitivity of the sensor is 3.8 mV (maximum) / μT, the influence of geomagnetism on the output voltage of the sensor is 51 μT × 3.8 mV = 0.1938V.

  Therefore, as shown in FIG. 12B, the error range is expanded by 0.2 V, and 0.6 to 2.1 V is set as the error range. Therefore, as shown in FIG. 12C, a range exceeding 2.2 V and a range less than 0.6 V are set as the magnetic field detection range.

  FIG. 13 is a block diagram showing a specific example of the magnetic field detection circuit together with the magnetic field detection element 130.

  As shown in FIG. 13, the comparison circuit 150 in the magnetic field detection circuit includes a comparator 151. The comparator 151 includes, as comparison voltages, a first comparison voltage (2.1 V) created by voltage division by the resistors 152 and 153 and a second comparison voltage created by voltage division by the resistors 154 and 155. (0.6V) is input, and the detection voltage from the magnetic field detection element 130 is input. Then, the comparator 151 determines whether or not the detection voltage from the magnetic field detection element 130 exceeds the first comparison voltage (2.1V) and whether or not it is less than the second comparison voltage (0.6V). To detect. When the detection voltage from the magnetic field detection element 130 exceeds the first comparison voltage (2.1 V), it is determined that there is a magnet in the vicinity of the gaming machine, and an abnormal signal (the magnet has been detected) Is output). An abnormal signal is also output when the detection voltage from the magnetic field detection element 130 becomes less than the second comparison voltage (0.6 V). Therefore, the abnormal signal is output when the detection voltage from the magnetic field detection element 130 exceeds the first comparison voltage (2.1 V) or less than the second comparison voltage (0.6 V), and the magnetic field is output. When the detection voltage from the detection element 130 is in the range of 0.6 to 2.1 V, no abnormal signal is output.

  Since the comparison voltage is created by dividing the resistors 152, 153, 154, and 155, the resistors 152, 153, 154, and 155 can be easily compared by replacing the resistors 152, 153, 154, and 155 with resistors having different resistance values. The voltage can be changed. When changing the comparison voltage, for example, there is a member that generates a magnetic field inside or on the back of the gaming machine (not a fraudulent member but a regular one such as a solenoid provided in the gaming machine), and the magnetic field of that member Depending on the case, the detection voltage of the magnetic field detection element 130 when there is no unauthorized member may be out of the range of 0.6 to 2.1V.

  A latch circuit 171 in the control circuit 170 latches a signal from the comparator 151. The magnetic field detection element 130 sequentially outputs detection voltages of the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z according to the XYZ selection signal from the control circuit 170, but the latch circuit 171 receives the XYZ selection signal. In accordance with the selection signal, the comparison result of the detection voltage from the X-axis sensor 13X by the comparator 151, the comparison result of the detection voltage from the Y-axis sensor 13Y by the comparator 151, and the comparator 151 are input. The comparison result of the detected voltage from the Z-axis sensor 13Z is sequentially latched. That is, when the X-axis sensor 13X outputs a detection voltage, the comparison result of the detection voltage from the X-axis sensor 13X by the comparator 151 is latched and an X latch signal is output, and the Y-axis sensor 13Y outputs the detection voltage. When the comparison is made, the comparison result of the detection voltage from the Y-axis sensor 13Y by the comparator 151 is latched and a Y latch signal is output. When the Z-axis sensor 13Z outputs the detection voltage, the Z-axis sensor by the comparator 151 is output. The comparison result of the detection voltage from 13Z is latched and a Z latch signal is output.

  The driver 172 inputs the X latch signal, Y latch signal, and Z latch signal from the latch circuit 171. If any one or more latch signals indicate an abnormal state (when the detected voltage is outside the range of 0.6 to 2.1 V), an error signal is sent to the effect control microcomputer 100. Output.

  FIG. 14 is a timing chart showing an operation example of the magnetic field detection circuit. In the first embodiment, the control circuit 170 selects the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z in order every 2 ms. That is, every 2 ms, the XYZ selection signal is changed so that the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z operate in order.

  The comparator 151 determines whether or not the detection voltage from the X-axis sensor 13X, the detection voltage from the Y-axis sensor 13Y, and the detection voltage from the Z-axis sensor 13Z are sequentially within the range of 0.6 to 2.1V. To detect. In FIG. 14, the magnet detection signal “present” indicates that the detection voltage from the sensor is out of the range of 0.6 to 2.1 V, and the detection voltage from the sensor is 0.6 to 2.V. The magnet detection signal “none” is indicated to be within the range of 1V.

  In the first embodiment, the driver 172 indicates that the X latch signal indicates that the detection voltage from the sensor is out of the range of 0.6 to 2.1 V (indicated as “abnormal” in FIG. 14). When the Y latch signal indicates that the detected voltage from the sensor is out of the range of 0.6 to 2.1 V (when “abnormal” is indicated in FIG. 14), Alternatively, when the Z latch signal indicates that the detection voltage from the sensor is out of the range of 0.6 to 2.1 V (when “abnormal” is indicated in FIG. 14), an error signal is output. Output. In FIG. 14, the fact that an error signal is output is shown as “abnormal”.

  Further, the driver 172 indicates that the X latch signal indicates that the detection voltage from the sensor is in the range of 0.6 to 2.1 V, and the Y latch signal indicates that the detection voltage from the sensor is 0.6 to 2.1 V. If the Z latch signal indicates that the detected voltage from the sensor is within the range of 0.6 to 2.1 V, the error signal is not output. In FIG. 14, “normal” indicates that no error signal is output.

  As described above, in the first embodiment, the magnetic field detection circuit 140 is configured such that any one or more of the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z in the magnetic field detection element 130 is a magnet. When the presence of the error is detected, an error signal is output to the production control microcomputer 100. The production control microcomputer 100 performs abnormality notification using the production device when an error signal is input (see FIG. 8).

  Further, since the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13 are arranged along three axes that are orthogonal to each other, how the direction of the magnet (the positional relationship between the N pole and the S pole) is determined. Even in this case, the presence of the magnet can be detected with high accuracy.

Embodiment 2. FIG.
In the first embodiment, by adjusting the comparison voltage (0.6 V or 2.1 V) used by the comparison circuit 150, variations in sensor characteristics in the magnetic field detection element 130 and the influence of geomagnetism are eliminated. In the second embodiment (Embodiment 2), variations in sensor characteristics and the influence of geomagnetism are eliminated by the software of the microcontroller. Specifically, when power supply to the gaming machine is started, a detection voltage is input from the magnetic field detection element 130, the input detection voltage is set as an initial value, and an initial value of the detection voltage from the magnetic field detection element 130 is determined. When the amount of change exceeds a predetermined value, it is determined that a magnet exists in the vicinity of the gaming machine. The initial value is updated as appropriate.

  In addition, in the second embodiment, when there is a member that generates a magnetic field inside or on the back of the gaming machine (not a fraudulent member but a regular one such as a solenoid provided in the gaming machine), the effect Also process to eliminate. Hereinafter, a member that generates a magnetic field existing inside or on the back of the gaming machine is referred to as a solenoid.

  15 and 16 are explanatory diagrams illustrating a configuration example of the control circuit 180 illustrated in FIG. In FIGS. 15 and 16, the function of the control circuit 180, that is, part of the processing by the control circuit 180 is also shown in blocks. 15 and 16 mainly show the configuration and function of the detected voltage of the X-axis sensor 13X as an example, but the control circuit 180 is configured to detect the detected voltage of the Y-axis sensor 13Y and the Z-axis sensor 13Z. Also for the detected voltage, the same process as the process for the detected voltage of the X-axis sensor 13X is performed.

  Assume that the oscillator 131 shown in FIG. 11 oscillates at about 200 kHz. That is, it is assumed that the oscillator 131 outputs a clock signal of about 200 kHz. Then, there is a possibility that noise of about 200 kHz is mixed in the detection voltage from the magnetic field detection element 130. Therefore, the control circuit 180 averages the detection voltage from the magnetic field detection element 130 and performs processing using the averaged signal. The control circuit 180 includes an A / D converter 160 and performs processing using the detection voltage digitized by the A / D converter 160. The A-D converter 160 outputs a 10-bit digital signal, and “1” corresponds to about 3.2 mV. That is, assuming that “0000000000000” is 0 V, “0000000001” indicates about 3.2 mV, and “0000000010” indicates about 6.4 mV. Similarly, for the subsequent values represented by 10 bits, the numerical value increased by “1” corresponds to a value increased by about 3.2 mV.

  Also in the second embodiment, as in the case of the first embodiment, the control circuit 180 sequentially selects the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z every 2 ms. That is, every 2 ms, the XYZ selection signal is changed so that the X-axis sensor 13X, the Y-axis sensor 13Y, and the Z-axis sensor 13Z operate in order.

  In the second embodiment, the detection voltage of the X-axis sensor 13X is input four times within a period of 2 ms. The input period (sampling period) is, for example, 123.2 μs. 123.2 μ is a time sufficiently longer than 5 μs (corresponding to 200 kMz), and it is considered that the influence of a noise component of about 200 kMz is eliminated if sampling is performed four times in that period.

  As shown in FIG. 15, the four outputs of the AD converter 160 are sequentially stored in the registers 211 to 214, respectively. The first averaging unit 202 adds the detection voltages (converted into digital values) stored in the registers 211 to 214, and shifts the added value by 2 bits in the direction of the lower bits. That is, the process of 1/4 is executed. Thus, if the number of signals to be averaged is set to 4, the averaging process can be realized only by the bit shift process.

  The output of the first averaging unit 202 is sequentially stored in the registers 221 to 228. Since the first averaging unit 202 executes the averaging process once every 6 ms, the average values of the detection voltages every 6 ms are sequentially stored in the registers 221 to 228. Each time the first averaging unit 202 outputs new data, the data in the registers 221 to 228 is sequentially shifted to the next stage. That is, the contents of the register 22x (x: 1 to 8) are transferred to the register 22 (x + 1). Further, the data output from the first averaging unit 202 is stored in the first-stage register 221 and the data in the last-stage register 228 is discarded.

  Then, after the average value (data output from the first averaging unit 202) is stored in all the registers 221 to 228, the second averaging unit 203 outputs new data. Each time, the average values stored in the registers 221 to 228 are added, and the added value is shifted by 3 bits in the direction of the lower bits. That is, the process of 1/8 is executed. Therefore, the average values stored in the registers 221 to 228 are further averaged. In this way, if the number of signals to be averaged by the second averaging unit 203 is set to 8, the averaging process can be realized only by the bit shift process.

  The first averaging unit 202 performs the averaging process for noise removal, but the second averaging unit 203 averages the detection voltage of the X-axis sensor 13X in terms of time (time average). The reason for time averaging is to eliminate detection of instantaneous magnetic field changes. That is, to eliminate the influence of instantaneous magnetic field changes.

  The second averaging unit 203 stores the calculated averaged detection voltage in the current value register 232.

  The second averaging unit 203 does not execute the process of storing the detected voltage in the current value register 232 for 5 seconds after the power supply is started, that is, for 5 seconds after the operation of the control circuit 180 starts. Further, after 5 seconds, the averaged detection voltage calculated first is stored in the initial value register 231. Note that the initial value is set 5 seconds after the start of power supply because the magnetic field environment around the gaming machine is expected to be stable, and may be other time (0 seconds may be used). It may be.

  The second averaging unit 203 stores the calculated averaged detection voltage in the initial value register 231 again after 10 seconds have elapsed since the previous detection voltage was stored in the initial value register 231. That is, the initial value is periodically updated. The reason for periodically updating the initial value is that there is a possibility that the electromagnetic parts etc. provided in the gaming machine will be magnetized as the operation of the gaming machine progresses. This is because the value of the detection voltage output by the sensor changes when no magnet is present. In this embodiment, the initial value is updated every 10 seconds, but the 10-second period is an example, and other update periods may be used. However, if the period for updating the initial value is too short, there is a possibility that fraudulent acts performed by moving the magnet at a low speed may not be detected. Therefore, it is preferable that the period be longer than a certain length.

  Further, the second averaging unit 203 does not execute the process of storing the detected voltage in the current value register 232 for 60 ms after detecting that the solenoid provided in the gaming machine is operated. In addition, after 60 ms elapses, the average detection voltage calculated first is stored in the initial value register 231. It should be noted that the subtracting unit 233, the comparing units 234, 235, the adding unit 241, the comparing units 244, 245, and the error determining unit 251 are also provided for 60 ms after detecting that the solenoid provided in the gaming machine has been operated. Do not work. The reason why the subtraction unit 233, the comparison units 234 and 235, the addition unit 241, the comparison units 244 and 245, and the error determination unit 251 are not operated is that accurate magnet detection is performed for a while after detecting that the solenoid is operated. This is because it is considered impossible to determine whether or not to output an error signal. The reason for setting the time to 60 ms is a period of time when a sudden magnetic field change period at the start of the operation of the solenoid used in the experiment is about 30 ms, with a margin for that. However, it may be preferable to employ a time other than 60 ms depending on the characteristics of the solenoid or the like actually used. The reason why the initial value is updated when it is detected that the solenoid has been operated is that the solenoid operates when the solenoid is operating (not as much as when the operation is started, but a larger magnetic field is generated than when the solenoid is not operating). This is because the value of the detection voltage output by the sensor changes when there is no magnet in the vicinity of the gaming machine as compared to when it is not.

  In order to detect that the solenoid has been operated, a subtracting unit 204 and a comparing unit 205 are provided. A relatively large current flows through the solenoid at the start of operation, and a large magnetic field change occurs instantaneously at that time. Therefore, the difference between the instantaneous detection voltage value, that is, the detection voltage value before being averaged by the second averaging unit 203 and the detection voltage value averaged by the second averaging unit 203 ( In this example, the absolute value of the difference is calculated by the subtractor 204, and the difference by the subtractor 204 is compared with the threshold value by the comparison unit 205.

  In this example, the threshold value is 12 (D in FIG. 15 indicates a decimal number). Since “1” in the data output from the A-D converter 160 corresponds to about 3.2 mV, “12” corresponds to about 3.2 mV × 12 = about 38 mV. The comparison unit 205 outputs a signal indicating that the solenoid has been operated when the difference by the subtracter 204 is larger than the threshold value. That is, it is assumed that when the detected voltage of the X-axis sensor 13X instantaneously increases by 38 mV or more, it is detected that the solenoid is operated.

  In this example, the threshold value for detecting whether or not the solenoid is operated is set to 38 mV. However, this value is an example, and may be appropriately set according to the characteristics of the sensor, the installation environment of the gaming machine, and the like. What is necessary is just to determine a threshold value.

  The subtraction unit 233 calculates a difference (in this example, the absolute value of the difference) between the initial value stored in the initial value register 231 and the value of the detected voltage stored in the current value register 232. Then, the difference is output as an X-axis change amount to the adding unit 241 shown in FIG. The X-axis change amount indicates a difference from the initial value of the detection voltage of the X-axis sensor 13X.

  The averaged detection voltage value output from the second averaging unit 203 is input to the comparison units 234 and 235. The comparison unit 234 compares the input detection voltage value with a threshold value (650D (decimal)), and if the input detection voltage value exceeds the threshold value, an abnormal signal (ferromagnetic field) Error signal) is output to the error determination unit 251. The comparison unit 235 also compares the value of the input detection voltage with a threshold value (185D (decimal)), and if the value of the input detection voltage is less than the threshold value, an abnormal signal (strong signal) Magnetic field error signal) is output to the error determination unit 251.

  Since “1” in the data output from the AD converter 160 corresponds to about 3.2 mV, “650” corresponds to about 3.2 mV × 650 = about 2.1 V. “185” corresponds to about 3.2 mV × 185 = about 0.6V. Therefore, when the detected voltage from the X-axis sensor 13X indicates that it is out of the range of 0.6 to 2.1 V, an abnormal signal is output. An abnormal signal (ferromagnetic field error signal) is also output when the detected voltage from the Y-axis sensor 13Y is out of the range of 0.6 to 2.1 V, and the Z-axis sensor 13Z An abnormal signal (ferromagnetic field error signal) is also output when the detected voltage indicates that it is outside the range of 0.6 to 2.1V.

  The addition unit 241 also receives a Y-axis change amount and a Z-axis change amount. The Y-axis change amount indicates a difference from the initial value for the Y-axis of the detection voltage of the Y-axis sensor 13Y. The Z-axis change amount indicates a difference from the initial value for the Z-axis of the detected voltage of the Z-axis sensor 13Z.

  The adder 241 adds the X-axis change amount, the Y-axis change amount, and the Z-axis change amount, and outputs the added value (total of each axis change amount) to the comparison units 244 and 245. The comparison unit 244 compares the added value with a threshold value (80D (decimal)). If the added value exceeds the threshold value, an abnormal signal (magnetic field change error signal) is output to the error determination unit 251. The comparison unit 244 compares the added value with a threshold value (60D (decimal)). When the added value is less than the threshold value, an abnormality cancellation signal (magnetic field change error cancellation signal) is output to the error determination unit 251.

  In the second embodiment, the amount of change in each axis is added, and it is confirmed whether or not there is a change in the magnetic field based on the added value. That is, it is confirmed whether a magnet exists in the vicinity of the gaming machine. As described above, since it is confirmed whether or not there has been a change in the magnetic field in consideration of the amount of change in each of the three axes, the change in the magnetic field can be accurately confirmed. Here, since the change amounts of the three axes are added, even when the change amounts of the three axes are taken into account, the processing of the control circuit 180 is not complicated.

  Further, the threshold value used by the comparison unit 244 is 80, but “1” in the data output from the AD converter 160 corresponds to about 3.2 mV, so “80” is about 3.2 mV × 80 corresponds to about 250 mV. The comparison unit 244 determines that the magnetic field has changed when the addition value (total amount of change in each axis) is greater than the threshold value. That is, the amount of change from the initial value of the detected voltage of the X-axis sensor 13X, the amount of change from the initial value of the detected voltage of the Y-axis sensor 13Y, and the amount of change from the initial value of the detected voltage of the Z-axis sensor 13Z. When the sum exceeds about 250 mV, it is determined that there is a change in the magnetic field. The reason why the voltage was set to 250 mV was that the magnetic field change was 240 mV when the magnet used for the experiment was placed 20 cm away from the surface of the gaming machine, and 250 mV with a margin was adopted. .

  However, 250 mV as a threshold value for detecting whether or not there has been a change in the magnetic field is an example, and the threshold value may be determined as appropriate according to the characteristics of the sensor, the installation environment of the gaming machine, and the like.

  Further, although the threshold value used by the comparison unit 245 is 60, “1” in the data output from the AD converter 160 corresponds to about 3.2 mV, so “60” is about 3.2 mV × 60 = corresponds to about 190 mV. The comparison unit 245 determines that the magnetic field change has been resolved when the added value (total change in each axis) is less than the threshold value. That is, it is determined that no magnet is present from the vicinity of the gaming machine.

  Note that 190 mV corresponds to a value obtained by subtracting 1/4 (= 60 mV) of 240 mV, which is a magnetic field change in the experiment, from 250 mV corresponding to a threshold value for detecting a magnetic field change. That is, in this example, the amount of change from the initial value of the detection voltage of the X-axis sensor 13X, the amount of change from the initial value of the detection voltage of the Y-axis sensor 13Y, and the initial value of the detection voltage of the Z-axis sensor 13Z When the sum with the amount of change reaches a value corresponding to about 190 mV, it is determined that the magnetic field change has been eliminated. However, the threshold value for determining that the magnetic field change has been eliminated is appropriately determined according to the characteristics of the sensor, the installation environment of the gaming machine, and the like.

  The error determination unit 251 sends an error signal to the effect control microcomputer 100 when one or more abnormal signals (strong magnetic field error signals) about the X axis, the Y axis, and the Z axis are continuously output for a predetermined time. Output. Note that the predetermined time is 100 ms as an example, but the predetermined time may be appropriately determined according to the characteristics of the sensor, the installation environment of the gaming machine, and the like.

  The error determination unit 251 outputs an error signal to the effect control microcomputer 100 when an abnormal signal (magnetic field change error signal) is continuously output from the comparison unit 244 for a predetermined time. Note that the predetermined time is 100 ms as an example, but the predetermined time may be appropriately determined according to the characteristics of the sensor, the installation environment of the gaming machine, and the like.

  Further, the error determination unit 251 outputs an error signal when an error cancellation signal (magnetic field change error cancellation signal) is input from the comparison unit 245 after outputting an error signal based on the error signal from the comparison unit 244. To stop.

  As described above, in the second embodiment, when the control circuit 180 inputs the detection voltage of the magnetic field detection element (magnetic sensor) 130 and the predetermined time (the magnetic field around the gaming machine is stable) When the value of the detection voltage input at the time determined) is set as an initial value and it is detected that the detection voltage of the magnetic field detection element 130 is different from the initial value by a predetermined value or more, the magnet is Since it is determined that it exists in the vicinity, the magnetic field can be detected regardless of the direction of the magnet, and the presence of the magnet can be accurately detected over a wide range.

  In the second embodiment, since the initial value set at a predetermined time is compared with the detection voltage of the magnetic field detection element 130, there is a possibility that a part that generates a magnetic field or a magnetism is generated in the gaming machine. Even when a component is used, it can be accurately detected that the magnet exists in the vicinity of the gaming machine. For example, even if there are metal parts, solenoids, speakers, or other parts that may be magnetized in the vicinity of the magnetic field detection element 130, they are erroneously detected by these parts, unlike the conventional magnet detection method. The magnet can be detected with high accuracy.

  Further, in the second embodiment, the control circuit 180 averages the detection voltage of the magnetic field detection element 130 and executes the comparison process and the like, so that it is possible to eliminate the influence of noise and suddenly. It is possible to prevent a magnet from being erroneously detected due to a generated magnetic field change (a magnetic field change not based on a magnet used for fraud). Further, when a current flows through an electric circuit in the gaming machine, a magnetic field based on the current is generated, but the influence of the magnetic field based on the current can be eliminated.

  In the second embodiment, the abnormal signal (magnetic field change error signal) from the comparison unit 244 and the strong magnetic field error signal are used together when determining that the magnet is present in the vicinity of the gaming machine. It may be determined that the magnet exists in the vicinity of the gaming machine using only the abnormal signal (magnetic field change error signal).

Embodiment 3 FIG.
In the first embodiment and the second embodiment, it is possible to accurately detect the presence of the magnet in the vicinity of the gaming machine, but it seems that the magnet is used in a member provided in the gaming machine. In the case of a game machine installed on the game machine installation island or on the other side of the game machine installation island that generates a magnetic field, it may be determined that a magnet used for fraud has been detected. There is.

  Therefore, in the third embodiment, the magnetic field detection circuit 140 is configured to detect only the magnets existing on the front side of the gaming machine (side where the player is present).

  FIG. 17 is an explanatory diagram showing an example of the installation location of the magnetic field detection element (magnetic sensor) in the third embodiment (Embodiment 3). In the example shown in FIG. 17, four magnetic field detection elements 130 </ b> A, 130 </ b> B, 130 </ b> C, and 130 </ b> D are installed at the outer four corners of the game board 6. In FIG. 17, a broken-line circle indicates a magnetic field detectable range of the magnetic field detection elements 130A, 130B, 130C, and 130D. The magnetic field detection range of the magnetic field detection elements 130A, 130B, 130C, and 130D covers almost the entire front surface of the game board 6 (the entire game area). In the example shown in FIG. 17, the entire game area is covered by any one or more of the magnetic field detection elements 130A, 130B, 130C, and 130D, but each of the magnetic field detection elements 130A, 130B, 130C, and 130D Magnetic field detection elements 130A, 130B, 130C, and 130D having characteristics that can cover the entire game area may be used. In the third embodiment, four magnetic field detection elements 130A, 130B, 130C, and 130D are installed. However, a larger number of magnetic field detection elements may be installed.

  FIG. 18 is an explanatory diagram illustrating a configuration example of the control circuit 190 illustrated in FIG. In FIG. 18, the function of the control circuit 190, that is, a part of the processing by the control circuit 190 is also shown in blocks. FIG. 18 mainly shows a configuration and a function taking the detection voltage of the X-axis sensor 13X as an example, but the control circuit 190 detects the detection voltage of the Y-axis sensor 13Y and the detection voltage of the Z-axis sensor 13Z. Also for, a process similar to the process for the detected voltage of the X-axis sensor 13X is performed.

  The A-D converter 160, the first averaging unit 202, the second averaging unit 203, the comparison unit 205, and the subtraction unit 233 are the A-D converter 160 and the first averaging unit 202 in the second embodiment. The second averaging unit 203, the comparison unit 205, and the subtraction unit 233 operate in the same manner (see FIG. 15).

  Accordingly, the subtraction unit 233 calculates the difference between the initial value stored in the initial value register 231 and the value of the detected voltage stored in the current value register 232, as in the case of the second embodiment. . Then, the difference is output to the vector calculation unit 251 as the X-axis change amount. The X-axis change amount indicates a difference from the initial value of the detection voltage of the X-axis sensor 13X. The vector calculation unit 251 is included in the control circuit 190.

  In addition, the control circuit 190 creates a Y-axis change amount for the Y-axis sensor 13Y and creates a Z-axis change amount for the Z-axis sensor 13Z in the same manner as creating the X-axis change amount for the X-axis sensor 13X. . The Y-axis change amount indicates a difference from the initial value of the detection voltage of the Y-axis sensor 13Y, and the Z-axis change amount indicates a difference from the initial value of the detection voltage of the Z-axis sensor 13Z.

  The magnetic field detection circuit 140 including the control circuit 190 is provided corresponding to each of the four magnetic field detection elements 130A, 130B, 130C, and 130D. FIG. 18 shows only one of the controls. Circuit 190 is shown. The four control circuits 190 are circuits having the same configuration. Hereinafter, the magnetic field detection circuit 140 provided corresponding to the magnetic field detection element 130A is referred to as a first magnetic field detection circuit. The magnetic field detection circuit provided corresponding to the magnetic field detection element 130B is used as the second magnetic field detection circuit, and the magnetic field detection circuit provided corresponding to the magnetic field detection element 130C is used as the third magnetic field detection circuit. A magnetic field detection circuit provided corresponding to the magnetic field detection element 130D is a fourth magnetic field detection circuit.

  In the control circuit 190 in the first to fourth magnetic field detection circuits, the vector calculation unit 251 uses the X-axis change amount output from the subtraction unit 233 as an x component, and subtracts the Y-axis sensor 13Y (see FIG. 18). Not shown: Y-axis change amount outputted by the subtractor 233 for the X-axis sensor 13X is used as the y component, and a subtractor for the Z-axis sensor 13Z (not shown in FIG. 18: X-axis) A three-dimensional vector (magnetic vector) having the z-axis change amount output by the sensor 13X that performs processing similar to that of the subtracting unit 233 as the z component is determined.

  Then, the vector calculation unit 251 outputs data indicating the determined three-dimensional vector to the intersection detection unit 401. The intersection detection unit 401 is a circuit provided outside the first to fourth magnetic field detection circuits.

  The intersection detection unit 401 receives data indicating a three-dimensional vector from the vector calculation unit 251 of the control circuit 190 in the first to fourth magnetic field detection circuits. When the Z directions in the respective three-dimensional vectors do not match, the intersection detection unit 401 uses the Z-axis in any three-dimensional vector (for example, the three-dimensional vector output from the first magnetic field detection circuit). Then, a correction process for aligning the Z axis of another three-dimensional vector is performed.

  FIG. 19 is an explanatory diagram showing projection of a three-dimensional vector onto a plane. FIG. 20 is an explanatory diagram for explaining a method of detecting the position of the magnet based on the projection line. As shown in FIG. 19, the intersection detection unit 401 projects each three-dimensional vector onto a predetermined plane. Then, four line segments (projection lines) appear on a predetermined plane. The predetermined plane is, for example, an XY plane with the Z axis as the vertical direction. FIG. 19 shows an example in which the XY plane is orthogonal to the front and back surfaces of the gaming machine 1, but the XY plane may not be orthogonal to the front and back surfaces of the gaming machine 1. The intersection detection unit 401 extends each of the four line segments in both directions. Then, as shown in FIG. 20, a point where four straight lines intersect is generated. In FIG. 20, arrows 130a to 130d are projection lines of three-dimensional vectors calculated in the first to fourth magnetic field detection circuits based on the detection signals of the magnetic field detection elements 130A to 130D shown in FIG. Indicates. FIG. 20 also shows only one extension line among the extension lines in both directions of the projection line. The intersection detection unit 401 outputs data indicating a point where four straight lines intersect on a predetermined plane to the front-rear determination unit 402. The front-rear determination unit 402 is also a circuit provided outside the first to fourth magnetic field detection circuits.

  The front-rear determination unit 402 determines that there is a member (magnetic generation source) that generates a magnetic field on the extension of the point where the four straight lines intersect. Then, it is determined whether the side on which the magnetic generation source is present is on the front side (side on which the player is present) or the rear side with respect to the surface of the game board 6. That is, based on the direction of magnetism detected by the intersection detection unit 401, it is determined whether or not the magnetic source is within a specific range on the front side of the gaming machine. Further, the front-rear determination unit 402 also executes processing for specifying the position of the magnetic generation source based on data indicating the point where the four straight lines output from the intersection detection unit 401 intersect. For example, the front / rear determination unit 402 regards a point where four straight lines intersect as the position of the magnetic generation source.

  When the front / rear determination unit 402 determines that the side where the magnetic generation source exists is on the front side with respect to the surface of the gaming board 6 and determines that the magnetic generation source is within a specific range on the front side of the gaming machine The error determination unit 404 determines that the magnetism generation source is a magnet used for fraud, and outputs an error signal to the effect control microcomputer 100. FIG. 20 shows an example in which the magnetic generation source is present on the front side of the gaming machine. FIG. 20 corresponds to a view of the gaming machine 1 as viewed from above. The specific range is, for example, an area corresponding to the game area. Furthermore, a specific range may be narrowed. For example, an area corresponding to an area where the first start port 13 and the second start port 14 are provided in the game area is set as a specific range.

  In the third embodiment, it is determined whether or not the region where the magnetic generation source is present is within a specific range on the front side with respect to the surface of the game board 6, and the magnet used for fraud is in the vicinity of the gaming machine Therefore, when a magnet is used in a member provided in the gaming machine, or an installation on the gaming machine installation island or a game installed on the opposite side of the gaming machine installation island Even when the machine generates a magnetic field, the magnet used for fraud can be detected without error.

  In addition, the error determination unit 404 determines whether the magnet is within a specific range when the front-rear determination unit 402 determines that the side where the magnetism generation source exists is on the front side with respect to the surface of the game board 6. Regardless of the case, it may be determined that the magnetism generation source is a magnet used for fraud, and an error signal may be output to the production control microcomputer 100.

  Further, the A-D converter 160, the first averaging unit 202, the second averaging unit 203, the comparison unit 205, and the subtraction unit 233 are the same as the A-D converter 160, the first averaging unit in the second embodiment. The unit 202, the second averaging unit 203, the comparison unit 205, and the subtraction unit 233 operate in the same manner as in the case of the second embodiment, and the initial value set at a predetermined time and the magnetic field detection element 130. Detecting the presence of a magnet in the vicinity of a gaming machine accurately even when using parts that generate magnetic fields or parts that may become magnetized in gaming machines. can do.

  Further, as in the case of the second embodiment, the control circuit 190 averages the detection voltage of the magnetic field detection element 130 and executes the comparison process and the like, so that the influence of noise can be eliminated. Thus, it is possible to prevent a magnet from being erroneously detected due to a sudden magnetic field change (a magnetic field change not depending on a magnet used for fraud). Further, when a current flows through an electric circuit in the gaming machine, a magnetic field based on the current is generated, but the influence of the magnetic field based on the current can be eliminated.

  FIG. 21 is a block diagram illustrating a modification of the third embodiment. The configuration shown in FIG. 21 is the same as the configuration shown in FIG. 18 except that a moving direction / distance determining unit 403 that determines the moving direction and moving distance of the magnetic source based on the output of the front / rear determining unit 402 is added. It is.

  The front / rear determination unit 402 determines whether or not the region where the magnetic generation source is present is within a specific range on the front side with respect to the surface of the game board 6. The determination result of the unit 402 is input every predetermined period (in this example, every 0.5 seconds). In addition, the moving direction / distance determination unit 403 inputs data indicating points where four straight lines intersect from the intersection detection unit 401 every predetermined period.

  FIG. 22 is an explanatory diagram for explaining a method of detecting the movement of a magnet based on four straight lines (projection lines). The moving direction / distance determination unit 403 determines the moving direction of the magnetic source based on the moving direction of the point where the four straight lines intersect, and determines the moving direction of the magnetic source based on the moving distance of the point where the four straight lines intersect. judge. Specifically, the movement direction / distance determination unit 403 regards the movement direction of the point where the four straight lines intersect as the movement direction of the magnetic generation source, and determines the movement distance of the point where the four straight lines intersect as the magnetic generation source. It is regarded as the movement distance.

  When the magnet is detected based on the movement direction of the magnetic generation source, the movement direction / distance determination unit 403 determines that the area where the magnetic generation source exists is within a specific range on the front side with respect to the surface of the game board 6. And, for example, when it is determined that the moving direction of the magnetism generation source is not directed to the position corresponding to the installation position of the movable member that is easily magnetized provided in the gaming machine, the error determination unit 404 Then, it is determined that the magnetism generation source is a magnet used for fraud, and an error signal is output to the production control microcomputer 100. FIG. 22 shows that the region where the magnetic source is present is within a specific range W on the front side. In that state, if the moving direction is a predetermined direction (for example, a direction that does not go to the position corresponding to the installation position of the movable member that is easily magnetized provided in the gaming machine), the error determination unit 404 generates an error. Output a signal. In FIG. 22, the projection line and the extension line for determining the intersection after the movement are not shown, but the intersection after the movement is divided into four three as in the case of determining the intersection before the movement. It is determined based on the projection line of the dimension vector.

  Further, when the magnet is detected based on the movement distance of the magnetic generation source, the movement direction / distance determination unit 403 determines that the area where the magnetic generation source exists is within a specific range on the front side with respect to the surface of the game board 6. And, for example, when it is determined that the moving distance of the magnetism generation source is not included in the range of the movable distance of the movable member that is easily magnetized provided in the gaming machine, the error determination unit 404 It is determined that the magnetism generation source is a magnet used for fraud, and an error signal is output to the production control microcomputer 100.

  The error determination unit 404 may determine whether or not the magnetic generation source is a magnet used for fraud based on the moving direction and moving distance of the magnetic generation source. For example, the moving direction / distance determining unit 403 provides the gaming machine with the moving direction of the magnetic generation source within a specific range on the front side of the surface of the game board 6 where the magnetic generation source exists. It is detected that it is not directed to the location corresponding to the installation position of the movable member that is easily magnetized, and the movement distance of the magnetic source is the movement of the movable member that is easily magnetized in the gaming machine. When it is detected that it is not included in the range of the possible distance, the error determination unit 404 determines that the magnetism generation source is a magnet used for fraud, and outputs an error signal to the production control microcomputer 100. To do.

  In the modification of the third embodiment, the moving direction of the magnetic generation source or the moving distance of the magnetic generation source is detected, and based on the detection result, it is determined that the magnet exists in the vicinity of the gaming machine. Therefore, when a regular movable member that may cause a magnetic field is provided in the gaming machine, it is possible to prevent the movable member from being erroneously detected as a magnet used for fraud. .

  When the magnet is detected based on the moving direction of the magnetic generation source, the moving direction / distance determination unit 403 determines that the moving direction of the magnetic generation source is toward a location corresponding to the specific unit in the game area 7. Then, the error determination unit 404 may determine that the magnetism generation source is a magnet used for fraud. The specific part in the game area 7 is, for example, a winning area (in particular, the first start winning opening 13 or the second starting winning opening 14). Further, when the magnet is detected based on the moving distance of the magnetic generation source, if the moving distance of the magnetic generation source is included in a predetermined range, it is determined that the magnetic generation source is a magnet used for fraud. It may be. The predetermined range is a range in which the magnet moves when the game ball is illegally guided to the winning area with a magnet in the game area 7 such as 10 to 40 cm.

  As described above, in the first to third embodiments (including modifications), a magnetic field can be detected regardless of the orientation of the magnet, and the presence of the magnet over a wide range. It can be detected accurately. Furthermore, the presence of a magnet can be accurately detected even when there is a legitimate member that may cause a magnetic field on the back surface of the gaming machine.

  In the first to third embodiments (including modifications), if the special symbol stop symbol variably displayed on the special symbol indicator 8 based on the start winning is a combination of predetermined symbols, An example of this type of gaming machine (referred to as a first-class pachinko gaming machine) is given as an example, but there is a prize in a predetermined area (specific area: V prize area) of an electric accessory to be released based on a start prize. The present invention can also be applied to a type of gaming machine that is a big hit (referred to as a second type pachinko gaming machine).

  In the type 2 pachinko gaming machine, the entrance and specific area of the electric accessory are susceptible to fraud, so the magnetic field detection element 130 and the magnetic field detection circuit 140 are particularly useful for placing a game ball at the entrance and specific area of the electric accessory. It is preferable that it is provided so that an illegally guiding action can be found. In the second type pachinko gaming machine, it is possible to generate a big hit directly by illegally winning a game ball in a specific area, and the damage to the game store is great, so the magnetic field detecting element 130 and the magnetic field detecting circuit 140 The effect is great. However, with regard to the first type pachinko gaming machine exemplified in the first to third embodiments (including modifications), the gaming ball is illegally guided to the start winning opening, or the gaming ball is inserted to the big winning opening. It is effective to provide the magnetic field detection element 130 and the magnetic field detection circuit 140 because there is a possibility that the game shop may be damaged by illegal acts such as illegally guiding.

  In the first to third embodiments (including modifications), the magnetic field detection circuit 140 is installed on the effect control board 80, and the error signal from the magnetic field detection circuit 140 is the effect control microcomputer 100. However, the magnetic field detection circuit 140 may be installed on the main board 31 and an error signal from the magnetic field detection circuit 140 may be input to the game control microcomputer 560. In the case of such a configuration, control in which the game control microcomputer 560 uses a notification electrical component (such as a production device) to notify that it has found a magnet that may be directly used for fraud. The game control microcomputer 560 transmits a command to the effect control microcomputer 100, and the effect control microcomputer 100 notifies using an electrical component for notification (such as an effect device). May be performed.

  In the first to third embodiments (including modifications), the control circuits 170, 180, and 190 shown in FIG. 10 are external to the production control microcomputer 100 (the error signal is for game control). In the case of being input to the microcomputer 560, it was realized by a microcontroller provided outside the game control microcomputer 560. However, the functions of the control circuits 170, 180, 190 are used for effect control. You may make it implement | achieve with the microcomputer 100 or the microcomputer 560 for game control.

  Note that it is difficult to detect a magnet with high accuracy if an electronic compass (magnetic compass) is simply used to detect a magnet used for an illegal act on a gaming machine. This is because it is affected by geomagnetism and the strength of geomagnetism varies depending on the difference in latitude. However, in the first to third embodiments, since the detection threshold value is set in consideration of the influence of geomagnetism, the magnet can be detected with high accuracy without being affected by the geomagnetism.

  In addition, if an electronic compass is simply used to detect magnets used for fraudulent acts against gaming machines, the objects installed on the gaming machine installation island or the gaming machine installed on the opposite side of the gaming machine installation island In the third embodiment, there is a risk that a magnet used for fraudulent acts may be erroneously detected. However, in the third embodiment, there is an installation on the gaming machine installation island or on the gaming machine installation island. A magnet used for fraudulent acts can be detected without being affected by the gaming machine installed on the opposite side.

  The present invention can be suitably applied to a gaming machine capable of performing a predetermined game using a game ball.

It is the front view which looked at the pachinko game machine from the front. It is a block diagram which shows the circuit structural example of a game control board (main board). It is a block diagram showing an example of circuit configuration of an effect control board, a lamp driver board and an audio output board. It is a flowchart which shows the main process which CPU in the microcomputer for game control performs. It is a flowchart which shows a 2 ms timer interruption process. It is a flowchart which shows the main process which CPU for production control performs. It is a flowchart which shows production control process processing. It is a flowchart which shows a fraud detection process. It is explanatory drawing for demonstrating the installation position of a magnetic field detection element. It is a block diagram which shows the structural example of the circuit for a magnetic field detection with a magnetic field detection element. (A) is a block diagram showing a configuration example of the magnetic field detection element, (B) is an explanatory diagram showing the positional relationship of the X-axis sensor, the Y-axis sensor, and the Z-axis sensor, and (C) is a three-axis (X-axis) orthogonal to each other , Y axis, Z axis). It is explanatory drawing for demonstrating operation | movement of the comparison circuit in 1st Embodiment. It is a block diagram which shows the specific example of the circuit for a magnetic field detection in 1st Embodiment with a magnetic field detection element. FIG. 6 is a timing diagram illustrating an operation example of a magnetic field detection circuit. It is explanatory drawing which shows the structural example of the control circuit in 2nd Embodiment. It is explanatory drawing which shows the structural example of the control circuit in 2nd Embodiment. It is explanatory drawing which shows an example of the installation place of the magnetic field detection element in 3rd Embodiment. It is explanatory drawing which shows the structural example of the control circuit in 3rd Embodiment. It is explanatory drawing which shows the projection to the plane of a three-dimensional vector. It is explanatory drawing for demonstrating the method to detect the position of a magnet based on a projection line. It is explanatory drawing which shows the structure of the control circuit in the modification of 3rd Embodiment. It is explanatory drawing for demonstrating the method to detect the movement of a magnet based on a projection line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pachinko machine 2A Game frame 6 Game board 7 Game area 8 Special symbol display 9 Production display device 13 1st start winning opening 14 2nd starting winning opening 15 Variable winning ball apparatus 31 Game control board (main board)
56 CPU
560 Game control microcomputer 80 Production control board 100 Production control microcomputer 101 Production control CPU
130 Magnetic field detection element (magnetic sensor)
131 Oscillator 132 Timing Control Circuit 133 Reference Voltage Generator 134 Sample Hold Circuit (Selection Circuit)
135 Differential Amplifier 13X X-axis Sensor 13Y Y-axis Sensor 13Z Z-axis Sensor 140 Magnetic Field Detection Circuit 150 Comparison Circuit 160 AD Converter 171 Latch Circuit 172 Driver 170, 180, 190 Control Circuit 251 Vector Calculation Unit 401 Intersection Detection Unit 402 Front / rear determination unit 403 Movement direction / distance determination unit 404 Error determination unit

Claims (3)

A gaming machine capable of performing a predetermined game using a game ball,
A magnetic sensor configured to detect a change in impedance due to a magnetic field applied from the outside to an amorphous wire arranged along three axes orthogonal to each other and to output a detection voltage based on each change amount;
An averaging unit that samples and averages the detection voltage output by the magnetic sensor at an interval longer than the cycle of the drive clock signal that drives the magnetic sensor;
Magnet determining means for determining that the magnet is present in the vicinity of the gaming machine when it is detected that the detection voltage output by the averaging unit exceeds a predetermined value with respect to a predetermined reference value;
A reference value setting means for inputting a detection voltage of the magnetic sensor and setting a value of the input detection voltage as the reference value when power supply to the gaming machine is started ;
The gaming machine according to claim 1, wherein the averaging unit starts a process of averaging the detected voltage when a predetermined period has elapsed since power supply to the gaming machine is started . A game frame installed to be openable and closable with respect to the outer frame, and a game board in which a plurality of game components are attached to a predetermined plate-like body that is detachably attached to the game frame, and is produced as the game component. An image display device is provided on the gaming board, and an effect control board on which an effect control means for controlling the image display device is mounted is a gaming machine installed on the back side of the image display device,
The gaming machine according to claim 1, wherein a magnetic sensor is mounted on the effect control board. A game frame installed to be openable and closable with respect to the outer frame, and a game board that is detachably attached to the game frame and has a plurality of game parts attached to a predetermined plate-like body;
The gaming machine according to claim 1, wherein a magnetic sensor is installed in the gaming frame.

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