JP4591952B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine that acquires the count value indicated by the count calculation means as a random number value, and thereby draws a winning combination, an effect pattern, and the like.

  2. Description of the Related Art Conventionally, in gaming machines that perform lotteries for winning combinations and production patterns, etc., as described in Patent Document 1, for example, a clock signal with a predetermined period generated by a clock generation circuit made of a crystal oscillator Is provided with a random number generation device that obtains a random number value from the count circuit in response to a game operation performed by the player at an arbitrary time.

  Random number generators composed of such hardware can easily generate uniformly distributed random numbers by increasing the clock cycle, etc., compared to the so-called software random number extraction method that obtains random numbers according to a random number generation algorithm. Therefore, it is widely used in gaming machines such as slot machines or pachinko machines that perform internal lottery such as winning a prize because it reduces the calculation load of the CPU that controls the overall operation of the gaming machine.

  By the way, in recent years, an illegal player operates a game on the basis of vibration from an unauthorized device with a diaphragm attached to an electronic metronome, thereby generating a specific random number with a high probability in a random number generator, and the inside of the gaming machine. The act of winning a random lottery is a problem. However, it is difficult for an unauthorized player who performs such an act to find out early because he or she hides an unauthorized device in his clothes. Corresponding to this, two lots of main and sub are prepared in the lottery counter circuit, and each time the main counter circuit makes a count, the random number is picked up from the sub-counter circuit updated in an infinite loop. The random number generator of the plus random number system that changes the starting point of the main counter circuit each time is copied to the count of the main counter circuit.

JP 2003-190483 A

  However, since the plus random number random number generator used in the conventional gaming machine described above requires two counting operation means, that is, a main circuit and a sub circuit, as a counter circuit, the manufacturing cost of the counting operation means is less than that of one thing. There has been a problem that the amount of the increase has increased greatly.

  The present invention has been made in view of such conventional problems, and an unauthorized player operated a game on the basis of vibration from an unauthorized device without complicating a circuit configuration for performing a lottery in a game. Even in such a case, an object is to provide a gaming machine for ensuring the fairness of the game.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a random number acquisition signal generating means for generating a first random number acquisition signal triggered by a predetermined game operation by a player, and the first random number acquisition signal A low-pass filter that shapes the first random number acquisition signal into a second random number acquisition signal by removing a high frequency component from the clock, a clock signal generation unit that generates a clock signal of a predetermined period, and the clock signal A count calculation means for counting the count value, an AC signal generation means for generating an AC signal that is asynchronous with a counting cycle of the count calculation means, and the AC signal is added to the second random number acquisition signal. third and signal adding means for generating a random number acquisition signal, the third exceed the threshold of the random number acquisition signal falling side the count indicated by said counting operation means when it becomes a threshold rising side by Characterized in that it comprises a random number acquisition means for acquiring a value as a random number value, and an internal lottery means for drawing a winning combination based on the random number value acquired by said random number acquisition means.

According to a second aspect of the present invention, random number acquisition signal generating means for generating a first random number acquisition signal triggered by a predetermined game operation by a player, and removing a high frequency component from the first random number acquisition signal A low-pass filter that shapes the first random number acquisition signal into a second random number acquisition signal, a clock signal generation unit that generates a clock signal of a predetermined period, and a counting operation that counts a count value in synchronization with the clock signal Means for generating a DC waveform signal that is asynchronous with respect to the counting cycle of the counting operation means, and adding the DC waveform signal to the second random number acquisition signal. preparative a signal adding means for generating a random number acquisition signal, the count value where the indicated counting operation means if it becomes the third exceed the threshold of the random number acquisition signal falling side threshold rising side as a random number value A random number acquisition means for, characterized in that it comprises an internal lottery means for drawing a winning combination based on the random number value acquired by said random number acquisition means.

  According to the gaming machine of the first aspect, the random number acquisition means counts from the timing of the gaming operation by changing the phase of the AC signal by the AC signal generating means with respect to the timing of the predetermined gaming operation by the player. Since it is possible to change the time until the random number value is obtained from the arithmetic means, an unauthorized player can play a game based on vibrations from unauthorized devices without complicating the circuit configuration for performing lottery in games. Even when an operation is performed, it is possible to prevent a specific random value from being acquired with high probability.

  According to the gaming machine of the second aspect, the random number acquisition means can be obtained from the timing of the gaming operation by changing the phase of the DC waveform signal by the signal generating means with respect to the timing of the predetermined gaming operation by the player. Since it is possible to change the time until the random number value is acquired from the counting operation means, an unauthorized player can use a lottery in a game as a reference, without complicating the circuit configuration for performing lottery in games. Even when a game operation is performed, it is possible to prevent a specific random value from being acquired with high probability.

  According to the gaming machine of the present invention, a specific random number value can be obtained even when an unauthorized player performs a game operation based on vibration from an unauthorized device without complicating a circuit configuration for performing a lottery in a game. Can be acquired with high probability. Therefore, an act in which an unauthorized player illegally wins an internal lottery of a gaming machine can be eliminated without significantly increasing the manufacturing cost of the gaming machine, and a fair game can be provided.

  Hereinafter, a preferred embodiment of a gaming machine according to the present invention will be described with reference to the drawings, taking a slot machine as an example. 1 is a perspective view showing the external structure of the slot machine 1, and FIG. 2 is a view showing the internal structure of the slot machine 1 with the front door 3 opened.

  In FIG. 1, a slot machine 1 includes a housing 2 that is a substantially rectangular box, and a front door 3 that is attached to the housing 2 and can be opened and closed by a hinge mechanism.

  The front side of the front door 3 is roughly divided into an upper panel portion 4 and a lower panel portion 5, which are integrally formed of hard plastic as a so-called decorative board designed to enhance the visual effect. Further, below the lower panel portion 5, there is provided a tray unit 6 in which a tray portion 6a for storing medals (game media) to be paid out at the time of winning is integrally formed.

  An operation console 7 is integrally formed between the upper panel portion 4 and the lower panel portion 5 so as to protrude toward the player and on which switches for performing game operations are arranged. In addition, the upper panel part 4, the console 7, the lower panel part 5, and the saucer unit 6 face the player side, and these constitute a "front panel part".

  A panel surface 41 formed of a hard plastic plate or the like is provided at the center of the upper panel portion 4. A substantially rectangular transparent display window 42 is formed substantially at the center of the panel surface 41, and the three reels 101a, 101b, 101c of the reel unit 100 provided in the housing 2 are viewed through the display window 42. .

  Here, in the reel unit 100 installed in the housing 2, cylindrical reels 101a, 101b, and 101c are arranged in the rotation axis direction, respectively, and the outer circumferential surfaces of the reels 101a, 101b, and 101c are arranged in the circumferential direction. A plurality of types of symbols are drawn along. The player can visually recognize three symbols in the vertical direction drawn on three rows of reels through the display window 42.

  In addition, on the panel surface 41, a lamp (not shown) provided on the back side is turned on, for example, a game state display unit 43 that displays information related to a game state such as an internal winning for a winning combination, and a plurality of light emitting diodes The dot matrix display unit 44 that displays the dot image by lighting up, information on the number of medals credited (stored) in the slot machine 1, the number of medals earned by winning, or the number of winning winning combinations Numerical information display sections 45 to be displayed are provided around the display window 42, respectively.

  On the upper part of the upper panel part 4, there are arranged an effect lighting part 46 incorporating lamps such as high-intensity light emitting diodes and an effect sound emitting part 47a, 47b containing a speaker for generating sound effects relating to the game. Has been.

  In addition, a liquid crystal display unit 48 is disposed between the production sound emitting units 47a and 47b so as to face a display window formed by fitting a transparent hard plastic plate or the like. Note that the liquid crystal display unit 48 mainly displays information related to the game effect and information related to the game (game).

  On the side of the upper panel portion 4 are provided lighting units 49a and 49b for production made of fluorescent lamps or high-intensity light emitting diodes. The plurality of effect lighting units 46, 49a, 49b and the like described above are turned on or blinking in accordance with the progress of the game, so that the visual effect in the game is enhanced.

  On the upper right side of the console 7, a medal insertion part 71 having an insertion slot for inserting medals is provided. Further, on the left side of the upper surface, three bet buttons 72, 73, 74 which are push button switches are provided.

  The bet buttons 72, 73, and 74 are button switches for presenting the number of medals to bet on one game of the slot machine. When the game is started, the bet button 72 is pressed, so that one medal is bet on the game from the stored medals. Similarly, when the bet button 73 is pressed, two medals are bet, and when the bet button 74 is pressed, three medals are bet. The bet button 74 is particularly called a “max bet button” because it bets the maximum number of medals.

  On the left side of the front surface of the console 7, a start lever 75 for instructing the start of rotation of the reels 101a, 101b, and 101c is provided. The start lever 75 is provided with a swingable operation rod having a spherical operation knob at the tip, and is turned on when the operation rod is tilted, and automatically when the hand is released from the operation rod by the biasing force of the spring. It is formed of a switch unit that returns to a position and is turned off.

  In the center of the console 7, stop buttons 76a, 76b, and 76c for instructing to stop the rotation of the reels 101a, 101b, and 101c are arranged in parallel corresponding to the arrangement of the reels.

  A key hole 77 into which a key for unlocking the front door 3 is inserted is provided on the right side of the front surface of the console 7. When an administrator or the like of the slot machine 1 inserts a predetermined key into the key hole 77 and performs an unlocking operation, the front door 3 attached to the housing 2 can be opened forward by a hinge mechanism, and the front door 3 can be opened. These are automatically locked when closed to the housing 2 side.

  The lower panel 5 is provided with a panel 51 for displaying a picture of an appearing character and the like so that the player can recognize the model type of the slot machine 1. The saucer unit 6 disposed below the lower panel part 5 includes a medal payout opening 61 for discharging medals at the time of winning a prize, a saucer part 6a for storing the paid-out medals, and a speaker for generating an effect sound. Built-in production sound emitting units 62 are respectively arranged.

  Next, the internal structure of the housing 2 and the back surface structure of the front door 3 will be described with reference to FIG. In the figure, a main control board 20 having a CPU (microcomputer) for centrally controlling the entire operation of the slot machine 1 and housed in a hard plastic case is attached to the upper part of the housing 2.

  A reel unit 100 including reels 101a, 101b, and 101c is provided in the center of the housing 2. The reel unit 100 is positioned and attached to a predetermined frame so that the reels 101a, 101b, and 101c face the display window 42 of the front door 3 when the front door 3 is closed to the housing 2 side. Note that each of the reels 101a, 101b, and 101c is rotationally driven by a built-in stepping motor.

  Further, on the upper part of the reel unit 100, a spinning device board for sending a four-phase drive pulse signal to the stepping motor that rotationally drives each reel is attached, and the main control board 20 is rotated to the spinning device board. By sending drum drive (excitation) pulse data, each reel is controlled to rotate, brake and stop.

  Below the reel unit 100, a hopper device 21, an auxiliary storage unit 22 for storing medals overflowing from the hopper device 21, and a main power supply device 23 are provided. On the side surface of the main power supply device 23, a power supply device substrate 24 corresponding to a so-called switchboard is provided. Further, an external concentration terminal board 25 that can be connected to a management computer called a “hall computer” installed in the game hall is attached to the inner wall on the upper right side of the housing 2.

  Next, a plurality of high-intensity light-emitting diodes 31 that are light sources of the effect illumination unit 46 are arranged on the upper surface on the back side of the front door 3, and the speaker faces the effect sound emission units 47a and 47b. 32a and 32b are attached. Although not shown in FIG. 2, a liquid crystal display unit 48 is attached between the speakers 32a and 32b. Further, a sub-control board 30 formed of an electric circuit board is attached to the back side of the liquid crystal display unit 48.

  Note that the overall operation of the slot machine 1 is comprehensively controlled by the main control board 20 provided on the housing 2 side, and the sub control board 30 controls the display of effect video by the liquid crystal display unit 48 and effect lighting. Control mainly related to game effects, such as illumination control using the parts 46, 49a, 49b, and effect sound effect control using the effect sound emitting parts 47a, 47b, 62, is performed.

  Below the sub-control board 30, a panel plate having a transparent display window 42 for visually observing the reels 101a, 101b, 101c is disposed. Below the display window 42, a start lever 75 on the front side and A central display board 33 that functions as a relay board for transferring output signals of operation switches such as stop buttons 76a, 76b, 76c to the main control board 20 is provided.

  A medal sorting device 34 is attached below the central display substrate 33. The medal sorting device 34 is a device that determines and distributes the suitability of medals inserted into the medal insertion unit 71. Further, the medal sorting device 34 has a built-in medal sensor, and when a normal medal is inserted in a standby state of the game or the like, and the medal sensor detects this medal, a signal indicating acceptance of medal insertion is sent to the main control board. 20 to send. The medal sorting device 34 has a built-in reverse movement detection sensor that detects the movement of the object moving in the medal path in the direction of the slot.

  Below the main body of the medal sorting device 34, a guide member 35 that guides regular medals distributed by the medal sorting device 34 to the hopper device 21 provided in the housing 2 and removed by the medal sorting device 34. A guide member 36 that guides the medal (or foreign matter) that has been made to the medal discharge port 61 is provided. In addition, a guide member 37 that guides medals discharged from the hopper device 21 to the medal discharge port 61 is provided at the lower part on the back side of the front door 3. Further, a speaker 38 is attached adjacent to the medal discharge port 61 so as to face the above-described effect sound emitting unit 62.

  Next, a control system provided in the slot machine 1 will be described with reference to the block diagram of FIG.

  The main control board 20 includes a CPU 201, a random number generator 202, a storage unit 203, a timer 212, a timer interrupt generation unit 213, and a medal credit unit 214.

  The storage unit 203 is configured by a semiconductor memory such as a ROM or a RAM, and stores a system program 204 for a slot machine game in advance. The main control board 20 performs overall control of the overall operation of the slot machine 1 by the CPU 201 executing arithmetic processing according to the system program 204 stored in the storage unit 203.

  Operation switches such as bet buttons 72, 73 and 74, start lever 75, stop buttons 76a, 76b and 76c, and detection switches such as a medal sensor 34a of the medal sorting device 34 are connected to the main control board 20 with a wiring cable. Has been. The main control board 20 detects an operation related to the game based on output signals from the switches.

  The medal credit means 214 of the main control board 20 adds the number of medals inserted in the medal sorting device 34 and detected by the medal sensor 34a to the number of credits of medals stored internally.

  Further, the main control board 20 inputs detection signals from the reference position sensors 120a, 120b, and 120c provided on the reels 101a, 101b, and 101c, and grasps the rotation position serving as the reference of each reel, while rotating the rotating apparatus board. Predetermined cylinder drive pulse data is sent to 130. The rotating device substrate 130 controls the rotation and stopping of the reels 101a, 101b, and 101c by rotating the stepping motors 110a, 110b, and 110c in accordance with the rotating drive pulse data from the main control substrate 20. ing.

  In addition, a medal payout device such as a hopper device 21 and a sub control board 30 are connected to the main control board 20 by wiring cables. The main control board 20 pays out a predetermined number of medals to the tray portion 6a by controlling the hopper device 21 when a winning is confirmed.

  The sub-control board 30 controls and drives the liquid crystal display unit 48, the effect lighting units 46, 49a, 49b, and the effect sound emitting units 47a, 47b, 62 based on the control signal from the main control board 20. Productions that appeal to the visual and auditory sense of the person are performed as the game progresses.

  The storage unit 203 of the main control board 20 stores a winning lottery table 205 and an internal lottery flag 206. For example, the CPU 201 activates the random number generator 202 when the start lever 75 is operated, acquires a random number value, and refers to the winning lottery table 205 to thereby determine the winning combination or loser assigned to the obtained random number value. Lottery. Then, if there is a winning combination corresponding to the random number value, the CPU 201 wins the lottery result by using the winning combination as the winning combination of the game, and stores the winning combination in the internal lottery flag 206 of the storage unit 203. Here, the lottery method of winning combination is called “internal lottery”.

  The storage unit 203 stores non-rewritable reference data tables such as symbol arrangement data 207, reel stop position search table 208, and reel stop position selection table 209, and further includes a reel stop frame flag 210, a reel control flag 211, and the like. A rewritable data flag memory area is secured. These reference data table and data flag are used for the rotation and stop control of the reels 101a, 101b, and 101c.

  Note that the timer 212 measures the time until the automatic stop control of the reels 101a, 101b, and 101c is started, for example. The timer interrupt generation unit 213 is for synchronizing pulse signals (rotating drum drive pulse data) for controlling the stepping motors 110a, 110b, and 110c of the reels 101a, 101b, and 101c.

  Next, an outline of the game operation in the slot machine 1 will be described.

  The slot machine 1 enters a standby state when a prize is won in a previous game and a medal payout is completed, or when a loss is confirmed in the previous game. In this standby state, a standby mode effect is provided that suggests the state to the player and prompts a game operation. Next, when the player inserts a medal into the medal insertion unit 71 and presses any one of the bet buttons 72, 73, 74, the slot machine 1 determines a predetermined game from the medal (credit) stored inside. A number of medals are bet and the game is prepared.

  When the start lever 75 is tilted and the game is started in the game preparation state, the main control board 20 starts to rotate the three reels 101a, 101b, and 101c all at once and executes the internal lottery described above. The result of the internal lottery is stored in the internal lottery flag 206.

  Next, when one of the stop buttons 76a, 76b, and 76c is pressed by the player and the main control board 20 detects an operation of stopping the reel, the main control board 20 is changed to the pressed stop button. Control to stop the corresponding reel. When the main control board 20 detects that all the reels 101a, 101b, and 101c have stopped, the combination of the symbols displayed on each reel and the symbols related to the winning combination corresponding to the internal lottery flag 206 is one. Determine if you are doing it.

  When the winning of the winning combination is confirmed, the slot machine 1 is determined in advance according to the type of the winning combination based on the control of the main control board 20 until the number of credits of the internally stored medals reaches a predetermined number. Add the medal of the number of dividends to the number of credits. Further, when the addition result of the number of payouts and the number of credits exceeds the predetermined number, the slot machine 1 pays out the surplus number of medals to the tray unit 6a.

  FIG. 4 is a model diagram for explaining an internal lottery method using the winning lottery table 205. This figure shows an example in the case where the slot machine 1 is in a general gaming state. As a winning combination, a small combination <1>, <2>, a re-playing combination called replay, and a regular bonus (RB) ) And a big win called Big Bonus (BB).

  Here, the small role is a winning combination in which a predetermined number of medals are paid out to the player, and the re-playing role (replay) is the player who has the right to re-game while maintaining the number of medals inserted in the previous game. It is a winning combination to give to. Further, the special combination (RB) is a winning combination that gives a player a gaming state (special gaming state) in which a medal with a higher payout is paid compared to the general gaming state until a predetermined number of times or a predetermined number of winnings is reached. The big winning combination (BB) is a winning combination that gives the player the gaming state of the special combination a predetermined number of times.

  In the winning lottery table 205, a range of random values corresponding to each winning combination is assigned according to a winning probability defined for each winning combination. That is, in the winning lottery table 205, for example, the range of random values corresponding to a loss is the largest, followed by a small role <1>, a small role <2>, a replay (replaying role), a special role (RB), In the order of big winning combination (BB), the range of random values corresponding to each winning combination is set to be gradually reduced.

  When the start lever 75 is turned on, the internal lottery means of the main control board 20 acquires a random number value from the random number generator 202 and compares the acquired random number value with the winning lottery table 205 to draw a winning combination of the game. To do.

  For example, if the acquired random value Ri satisfies the relationship of R1 ≦ Ri <R2 shown in FIG. 4, the small role <1> is drawn, and if the relationship of R2 ≦ Ri <R3 is satisfied, the small role <2> is drawn. If the relationship of R3 ≦ Ri <R4 is satisfied, a replay (re-playing combination) is selected, and if the relationship of R4 ≦ Ri <R5 is satisfied, a special combination (RB) is selected, and the relationship of R5 ≦ Ri ≦ Rmax is satisfied. Draw a big hit (BB). Further, when the obtained random number value is 0 ≦ Ri <R1, it is lost. When the main control board 20 wins any of the winning combinations, the main control board 20 stores a flag corresponding to the combination.

  In the slot machine 1, a plurality of types of winning lottery tables 205 are prepared for use in accordance with the general game state, the special game state, and the payout rate setting stage.

  Next, when the player turns on the stop buttons 76a, 76b, and 76c in an arbitrary order, the main control board 20 performs control to sequentially stop the reels accordingly. When it is detected that all the reels 101a, 101b, and 101c are stopped, it is determined whether or not the symbols displayed on the reels match the symbols associated with the winning combination corresponding to the flag.

  For example, when three medals are bet on the game by pressing the bet button 74, the nine symbols that are viewed through the display window 42 are arranged on three horizontal rows in the upper, middle, and lower rows. Examine the three sets of symbols and two sets of symbols arranged on two diagonal lines in the diagonally right and left diagonal directions, and the symbol combination condition of the winning combination corresponding to the above flag is determined by any one of the symbols. When satisfied and complete, it is determined that the winning combination has been won. When the winning of the winning combination is confirmed, a medal with a predetermined number of payouts according to the type of the winning combination is paid out to the tray 6a, or medals corresponding to the payout number are added to the number of credits stored internally.

  Next, the random number generator 202 provided in the internal lottery means will be described with reference to FIGS. FIG. 5 is a block diagram showing the system configuration of the internal lottery means. FIG. 6 is a time chart showing main signal waveforms in the internal lottery means.

  In FIG. 5, the CPU 201 generates a first random number acquisition signal that is the trigger signal T in response to the start lever 75 being turned on. The CPU 201 does not output the first random number acquisition signal after the start lever 75 is turned on until the slot machine 1 enters the above-described standby state after the first random number acquisition signal is output once. With such a configuration, the CPU 201 serves as a random number acquisition signal generation unit that generates a first random number acquisition signal in response to a predetermined game operation by the player.

  The random number generation device 202 includes a clock generation circuit 311 formed from a crystal oscillator, a count circuit 312 that counts the clock signal CK generated by the clock generation circuit 311, and the first random number acquisition signal generated by the CPU 201. An AC that is asynchronous with the count cycle of the count circuit 312 and a low-pass filter (hereinafter referred to as LPF) 320 that forms the first random number acquisition signal into a second random number acquisition signal by removing the band component. An AC signal generation circuit 321 that generates a signal, a full-wave rectification circuit 322 that performs full-wave rectification on the AC signal generated by the AC signal generation circuit 321, a DC waveform signal from the full-wave rectification circuit 322, and an LPF 320 An adder 323 that generates a third random number acquisition signal by adding the generated second random number acquisition signal and an adder 323 generate A waveform shaping circuit 314 that shapes the third random number acquisition signal into a step-like latch signal and outputs it as a fourth random number acquisition signal, and the count circuit 312 receives the fourth random number acquisition signal from the waveform shaping circuit 314. And a storage circuit 313 that temporarily holds the indicated count value.

  The clock generation circuit 311 constantly outputs, for example, a clock signal CK of about 14 MHz regardless of the operation of the CPU 201. With this configuration, the clock generation circuit 311 serves as a clock signal generation unit that generates a clock signal having a predetermined period.

  The count circuit 312 serves as a count calculation unit that counts a count value in synchronization with the clock signal CK.

  The LPF 320 includes a resistor R1 and a capacitor C1. One end of the resistor R1 is connected to the input terminal of the LPF 320. The other end of the resistor R1 is connected to the output terminal of the LPF 320 and is connected to the reference potential point via the capacitor C1.

  The AC signal generation circuit 321 and the full-wave rectification circuit 322 serve as signal generation means for generating a periodic signal having a DC waveform that is asynchronous with the counting cycle of the count circuit 312.

  The time constant of the LPF 320 is such that the time for the second random number acquisition signal obtained from the LPF 320 to rise from the low level to the high level is at least twice the cycle of the DC waveform signal obtained from the full-wave rectifier circuit 322. Is set.

  The adder 323 serves as a signal adding unit that generates a third random number acquisition signal by adding the DC waveform signal to the second random number acquisition signal.

  The waveform shaping circuit 314 includes a Schmitt trigger IC, and the third random number acquisition signal generated by the adder 323 becomes a rising threshold value (hereinafter referred to as an L → H threshold value). The random number acquisition signal is shaped into a stepped latch signal and output as a fourth random number acquisition signal.

  The count circuit 312 is formed of a 16-bit increment counter, for example, and repeatedly outputs the count value from 0 to 65535 in synchronization with the clock signal CK. The storage circuit 313 acquires and stores the count value indicated by the count circuit 312 when it receives the fourth random number acquisition signal from the waveform shaping circuit 314. At this time, the CPU 201 reads the count value acquired by the storage circuit 313 and uses it as a random value for internal lottery. With such a configuration, the waveform shaping circuit 314 and the memory circuit 313 acquire the count value indicated by the count circuit 312 as a random value when the third random number acquisition signal reaches a predetermined value. It has become.

  Next, the operation of the random number generator 202 will be specifically described with reference to the time chart of FIG.

  As shown in FIG. 6A, the first random number acquisition signal generated by the CPU 201 instantaneously rises from the low level (L) to the high level (H) at the timing T1 when the start lever 75 is turned on. Signal. As shown in FIG. 6B, the second random number acquisition signal obtained by passing the first random number acquisition signal through the LPF 320 is delayed from the low level to the high level in 10 seconds, for example, after the timing T1. It becomes a signal to rise to. As shown in FIG. 6C, the DC waveform signal from the full-wave rectifier circuit 322 is a signal obtained by full-wave rectifying an AC signal and is asynchronous with the counting cycle of the count circuit 312. ing. As shown in FIG. 6 (d), the third random number acquisition signal from the adder 323 is obtained by adding the DC waveform signal shown in FIG. 6 (c) to the second random number acquisition signal shown in FIG. 6 (b). Signal. As the DC waveform signal shown in FIG. 6C, for example, a signal having a period of just over 2 seconds and an amplitude of 0.2 VP-P is used. When the third random number acquisition signal shown in FIG. 6D exceeds the falling threshold (hereinafter referred to as H → L threshold) A2 and becomes the L → H threshold A1, the waveform shaping circuit 314 The third random number acquisition signal is shaped into the step-shaped latch signal and output as a fourth random number acquisition signal.

  Here, in FIG. 6D, the third random number acquisition signal becomes the L → H threshold A1 at the timing T2, and the fourth random number acquisition signal is changed from the low level (L) to the high level at the timing T2. Stand up instantly at (H).

  The storage circuit 313 acquires and stores the count value indicated by the count circuit 312 at timing T2 when the fourth random number acquisition signal from the waveform shaping circuit 314 is received. That is, the random number generation device 202 acquires the count value indicated by the count circuit 312 as a random number value at a timing T2 delayed from the timing T1 when the start lever 75 is turned on. Here, in this embodiment, the timing T2 is changed by changing the phase of the DC waveform signal output from the full-wave rectifier circuit 322 with respect to the timing T1 of the predetermined game operation by the player, that is, the timing. The time from T1 until the memory circuit 313 acquires the random number value from the count circuit 312 can be arbitrarily changed. Thereby, even if the count value of the count circuit 312 is the same at the timing T1 of the predetermined game operation by the player, the random number value generated by the random number generator 202 is arbitrarily changed.

  Here, for comparison, consider a case where the second random number acquisition signal shown in FIG. 6B is input to the waveform shaping circuit 314 as it is. In this case, the waveform shaping circuit 314 causes the second random number acquisition signal shown in FIG. 6B to exceed the falling threshold (hereinafter referred to as the H → L threshold) A2 and change from the L → H threshold A1. At the timing Ta, the output instantaneously rises from the low level (L) to the high level (H), but the time from the timing T1 to the timing Ta is always constant. For this reason, in order to arbitrarily change the random number value generated by the random number generator 202, a waveform obtained by adding the DC waveform signal shown in FIG. 6C to the second random number acquisition signal shown in FIG. It is necessary to input to the forming circuit 314.

  Further, the waveform shaping circuit 314 instantaneously changes the output from the high level (H) to the low level (L) when the third random number acquisition signal shown in FIG. 6D falls below the H → L threshold A2. Fall down. Here, since the difference between the H → L threshold value A2 and the L → H threshold value A1 of the waveform shaping circuit 314 is set to be larger than the amplitude of the DC waveform signal shown in FIG. 6C, FIG. After the output of the waveform shaping circuit 314 shown rises to the high level (H) at the timing T2, if the first random number acquisition signal shown in FIG. 6 (a) does not fall, the third shown in FIG. 6 (d). Even when the random number acquisition signal fluctuates due to the fluctuation of the DC waveform signal, the output of the waveform shaping circuit 314 shown in FIG. 6E maintains a high level (H) state.

  According to the random number generation device 202 having such a configuration, the time from the timing T1 of the predetermined game operation by the player until the memory circuit 313 acquires the random number value from the count circuit 312 can be arbitrarily changed. With the circuit configuration, even when an unauthorized player performs a game operation based on vibration from an unauthorized device, the random number generator 202 can be prevented from generating a specific random value with high probability. Therefore, problems such as an illegal player intentionally cheating and increasing the probability of winning a prize are solved.

  Hereinafter, a random number generator as another preferred embodiment according to the present invention will be described with reference to the drawings. FIG. 7 is a block diagram showing the system configuration of the internal lottery means. FIG. 8 is a time chart showing main signal waveforms in the internal lottery means. Here, in description of other embodiment using FIG. 7, FIG. 8, the same code | symbol is attached | subjected to the component similar to embodiment shown in FIG. 5, FIG. 6, and description is abbreviate | omitted.

  In FIG. 7, the random number generation device 402 removes a high frequency component from the first random number acquisition signal generated by the clock generation circuit 311, the count circuit 312, and the CPU 201, thereby obtaining the first random number acquisition signal. 2 generates a random number acquisition signal, an AC signal generation circuit 421 that generates an AC signal that is asynchronous with the counting cycle of the count circuit 312, and generates an AC signal in the second random number acquisition signal generated by the LPF 420. A superposition circuit 422 that generates a third random number acquisition signal by superimposing the AC signal generated by the circuit 421 and a third random number acquisition signal generated by the superposition circuit 422 are waveform-shaped into a step-shaped latch signal. 4 includes a waveform shaping circuit 414 that outputs a random number acquisition signal 4 and a storage circuit 313.

  The LPF 420 includes a coil L2 and a capacitor C2. One end of the coil L2 is connected to the input terminal of the LPF 420. The other end of the coil L2 is connected to the output terminal of the LPF 420 and is connected to the reference potential point via the capacitor C2.

  The AC signal generation circuit 421 is an AC signal generation unit that generates an AC signal that is asynchronous with the counting cycle of the count circuit 312.

  The time constant of the LPF 420 is set so that the time for the second random number acquisition signal obtained from the LPF 420 to rise from a low level to a high level is at least twice the period of the AC signal obtained from the AC signal generation circuit 421. ing.

  The superimposing circuit 422 serves as a signal adding unit that generates a third random number acquisition signal by adding the AC signal from the AC signal generation circuit 421 to the second random number acquisition signal.

  The waveform shaping circuit 414 is composed of a Schmitt trigger IC, and when the third random number acquisition signal generated by the superimposing circuit 422 becomes an L → H threshold, the third random number acquisition signal is converted into a step-like latch signal. Waveform shaping and outputting as a fourth random number acquisition signal.

  Next, the operation of the random number generator 402 will be specifically described with reference to the time chart of FIG.

  As shown in FIG. 8A, the first random number acquisition signal generated by the CPU 201 instantaneously rises from the low level (L) to the high level (H) at the timing T1 when the start lever 75 is turned on. Yes. The second random number acquisition signal obtained by passing the first random number acquisition signal through the LPF 420 is a signal that gradually rises from the low level to the high level, as shown in FIG. 8B. The AC signal from the AC signal generation circuit 421 shown in FIG. 8C is asynchronous with the counting cycle of the count circuit 312. The third random number acquisition signal from the superimposing circuit 422 shown in FIG. 8D is a signal obtained by superimposing the AC signal shown in FIG. 8C on the second random number acquisition signal shown in FIG.

  When the third random number acquisition signal shown in FIG. 8D exceeds the H → L threshold value B2 and becomes the L → H threshold value B1, the waveform shaping circuit 414 converts the third random number acquisition signal into the step shape. Is shaped into a latch signal and output as a fourth random number acquisition signal.

  Here, in FIG. 8D, the third random number acquisition signal becomes the L → H threshold B1 at timing T12, and the fourth random number acquisition signal changes from the low level (L) to the high level at timing T12. Stand up instantly at (H).

  The storage circuit 313 acquires and stores the count value indicated by the count circuit 312 at the timing T12 when the fourth random number acquisition signal from the waveform shaping circuit 414 is received.

  That is, the random number generator 402 changes the timing T12 by changing the phase of the AC signal output from the AC signal generating circuit 421 with respect to the timing T1 when the start lever 75 is turned on. That is, the random number generation device 402 can arbitrarily change the time from the timing T <b> 1 until the storage circuit 313 acquires the random value from the count circuit 312. Thereby, even if the count value of the count circuit 312 at the timing T1 is the same, the random number value generated by the random number generator 402 is arbitrarily changed.

  Here, for comparison, consider a case where the second random number acquisition signal shown in FIG. 8B is directly input to the waveform shaping circuit 414. In this case, the waveform shaping circuit 414 outputs an output at a low level (at a timing Tb when the second random number acquisition signal shown in FIG. 8B exceeds the H → L threshold B2 and becomes the L → H threshold B1. L) instantaneously rises from high level (H), but the time from timing T1 to timing Tb is always constant. Therefore, in order to arbitrarily change the random number value generated by the random number generator 402, the waveform shaping circuit is obtained by adding the AC signal shown in FIG. 8C to the second random number acquisition signal shown in FIG. 414 needs to be entered. Further, the difference between the H → L threshold value B2 and the L → H threshold value B1 of the waveform shaping circuit 414 is larger than the amplitude of the AC signal shown in FIG. 8C for the same reason as the waveform shaping circuit 314 shown in FIG. It is set.

  According to the random number generation device 402 having such a configuration, the time from the timing T1 of the predetermined game operation by the player until the memory circuit 313 acquires the random value from the count circuit 312 can be arbitrarily changed. The same effect as the random number generator 202 shown in FIG.

  In the random number generator 202 shown in FIG. 5, the LPF 320 is constituted by the resistor R1 and the capacitor C1, and in the random number generator 402 shown in FIG. 7, the LPF 420 is constituted by the coil L2 and the capacitor C2. For example, a type other than those described above may be applied.

  The present invention can be applied not only to slot machines, but also to pachinko machines and other gaming machines that perform lotteries such as winning lotteries and production patterns using a hardware random number generator based on a clock signal.

FIG. 1 is a perspective view showing an external structure of a slot machine according to an embodiment of the present invention. FIG. 2 shows the internal structure of the slot machine according to the embodiment of the present invention. FIG. 3 is a block diagram showing a slot machine control system according to an embodiment of the present invention. FIG. 4 is a model diagram for explaining an internal lottery method using a winning lottery table according to an embodiment of the present invention. FIG. 5 is a block diagram showing the system configuration of the internal lottery means according to one embodiment of the present invention. FIG. 6 is a time chart showing main signal waveforms in the internal lottery means according to one embodiment of the present invention. FIG. 7 is a block diagram showing the system configuration of the internal lottery means according to another embodiment of the present invention. FIG. 8 is a time chart showing main signal waveforms in the internal lottery means according to another embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Slot machine, 2 ... Housing | casing, 3 ... Front door, 4 ... Upper panel part,
5 ... Lower panel part, 6 ... Receptacle unit, 6a ... Receptacle part, 7 ... Console,
20 ... main control board, 21 ... hopper device, 22 ... auxiliary reservoir,
23 ... Main power supply device, 24 ... Power supply device board, 25 ... External concentrated terminal board,
30 ... Sub-control board, 31 ... Light emitting diode,
32a, 32b ... speaker, 33 ... central display board,
34 ... Medal sorting device, 34a ... Medal sensor,
35, 36, 37 ... guide member, 38 ... speaker,
41 ... Panel surface, 42 ... Display window, 43 ... Game state display part,
44 ... dot matrix display section, 45 ... numerical information display section,
46 ... Illumination unit for production, 47a, 47b ... Sound emission unit for production,
48 ... Liquid crystal display unit, 49a, 49b ... Illumination section for effects,
51 ... Panel, 61 ... Medal payout opening, 62 ... Sound emission part for production,
71 ... medal insertion part, 72, 73, 74 ... bet button,
75 ... Start lever, 76a, 76b, 76c ... Stop button,
77 ... Keyhole,
100 ... reel unit,
101a, 101b, 101c ... reel,
110a, 110b, 110c ... stepping motors,
120a, 120b, 120c ... reference position sensor,
130 ... Cylinder device substrate,
201 ... CPU, 202 ... random number generator, 203 ... storage unit,
204 ... system program, 205 ... winning lottery table,
206 ... Internal lottery flag, 207 ... Symbol arrangement data,
208: Reel stop position search table,
209 ... Reel stop position selection table,
210: Reel stop frame flag, 211: Reel control flag,
212 ... Timer, 213 ... Timer interrupt generation unit,
214 ... Medal credit means 300 ... Directing device,
311 ... Clock generation circuit, 312 ... Count circuit,
314 ... Waveform shaping circuit, 313 ... Memory circuit, 320 ... LPF,
321 ... AC signal generation circuit, 322 ... full-wave rectification circuit, 323 ... adder,
402: random number generator, 414: waveform shaping circuit,
420 ... LPF, 421 ... AC signal generation circuit,
422 ... Superimposition circuit

Claims (2)

Random number acquisition signal generating means for generating a first random number acquisition signal triggered by a predetermined game operation by the player;
A low-pass filter that shapes the first random number acquisition signal into a second random number acquisition signal by removing a high frequency component from the first random number acquisition signal;
Clock signal generating means for generating a clock signal of a predetermined period;
Counting operation means for counting a count value in synchronization with the clock signal;
AC signal generating means for generating an AC signal that is asynchronous with respect to the counting cycle of the counting operation means;
Signal adding means for generating a third random number acquisition signal by adding the AC signal to the second random number acquisition signal;
Random number acquisition means for acquiring the count value indicated by the count calculation means as a random value when the third random number acquisition signal exceeds a falling threshold and becomes a rising threshold ;
A gaming machine comprising: an internal lottery means for drawing a winning combination based on the random value acquired by the random number acquiring means. Random number acquisition signal generating means for generating a first random number acquisition signal triggered by a predetermined game operation by the player;
A low-pass filter that shapes the first random number acquisition signal into a second random number acquisition signal by removing a high frequency component from the first random number acquisition signal;
Clock signal generating means for generating a clock signal of a predetermined period;
Counting operation means for counting a count value in synchronization with the clock signal;
Signal generating means for generating a signal of a DC waveform that is asynchronous with respect to the counting period of the counting operation means;
Signal adding means for generating a third random number acquisition signal by adding the DC waveform signal to the second random number acquisition signal;
Random number acquisition means for acquiring the count value indicated by the count calculation means as a random value when the third random number acquisition signal exceeds a falling threshold and becomes a rising threshold ;
A gaming machine comprising: an internal lottery means for drawing a winning combination based on the random value acquired by the random number acquiring means.

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