JP2007209413A - Game machine and method and program for determining winning of prize for game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent fraudulent attempts to be committed onto a game machine linked to the depression of a start switch. <P>SOLUTION: The game machine is provided with a random number extractor 4 which extracts a random number generated at the timing of either rising or falling of a signal of the start switch and an extraction timing selection part 7 which selects the timing of either rising or falling of the signal of the start switch for the timing of extracting a random number with the random number extractor 4 to operate the random extractor from the selection. Which timing is used is properly changed per game to make the random values generated in the lottery hard to predict. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a gaming machine, a winning determination method for a gaming machine, and a program. In particular, the present invention relates to a technique for preventing an illegal act related to pressing of a start switch.

  A gaming machine such as a slot machine is provided with a medal slot so that a player can enjoy a game by inserting a predetermined number of medals. The medals necessary for the game can be borrowed with a medal lending machine provided in the game hall, and the game can be started by inserting it into the medal slot of a desired gaming machine.

The operation of the conventional gaming machine was as follows.
First, when the start switch is operated, the start switch is turned on. In response to this, a lottery process is performed by a winning lottery means inside the gaming machine. Here, when a predetermined combination is won, a winning flag is set. The rotating reel starts to rotate. When the stop switch is operated, the stop switch is turned on. Then, the rotation of the corresponding rotating reel is stopped. After the stop switches corresponding to all the rotating reels are operated, whether or not the winning symbols corresponding to the winning flag are aligned on the effective winning line while the winning flag is established, that is, whether or not the winning is confirmed. Is determined. When it is determined that the winning is confirmed, a medal corresponding to the winning symbol is paid out.

  For example, when the evaluation of the lottery process is out of place, it is set so that the predetermined symbols are not aligned (so-called kicking), and when winning, the predetermined symbols are aligned on the condition that the stop switch is pressed at a predetermined timing. (So-called pull-in). In other words, only when winning in the lottery process, medals are paid out by winning a winning pattern under the predetermined conditions, but when not winning, medals are paid out regardless of how the stop switch is operated. There is no. This is to keep the medal payout at a certain probability. In order to realize this, a random number generator is used in the lottery process.

  A random number generator of a gaming machine generates a random number using a counter, for example. The random numbers generated in this case have a certain degree of regularity, and therefore have a predictable aspect. For example, as shown in FIG. 11, the random number generator (counter) sequentially generates numerical values from 0000 to FFFF (hexadecimal) at a constant cycle. The output of the counter, which is constantly changing, is expressed by assuming that the start switch is pressed down (in FIG. 11, the signal rise timings t1 and t3: the start switch press signal is positive logic, and the signal goes high when pressed down. And a lottery process using the random number as a random value (the value of code A is output as a random value at timing t1, and the value of code B is output as a random value at timing t2). The cycle of updating the counter output is very short, and even if it is known that the random number value has periodicity, it is difficult for the human industry to obtain the desired value. The counter output could be regarded as a pseudo-random number.

  However, the possibility that the player can skillfully operate the start switch using some device to increase the lottery probability beyond a predetermined value cannot be denied. For example, it was conceived that a low-frequency treatment device was attached to the arm, and the timing of pressing the start switch was adjusted by periodically stimulating the muscles of the arm, and similar random values were repeatedly obtained. In the example of FIG. 11, since the repetition cycle of the random number generator (counter) is T, it is possible in principle to obtain the same random number value by setting the depressing cycle TS of the start switch to an integral multiple of T. . It seems that cheating is performed by adjusting the period of stimulation by the low-frequency treatment device. Although it is forbidden to operate the start switch with the help of any device, the detection is not easy. It is required to take measures on the gaming machine side.

As techniques for making it difficult to predict random numbers to be acquired in the lottery, there are the following techniques.
JP, 2000-24286, A "Random number generator for gaming machines" The present invention relates to a random number generator for gaming machines, and in particular, prevents a fraud in which a winning time is estimated from the outside to manipulate a lottery probability. When connecting each bit output terminal of the counter circuit and each bit input terminal of the latch circuit, the arrangement of each bit output terminal of the counter circuit is inverted and connected to each bit input terminal of the latch circuit. JP 2004-321773 A “Game Machine, Game Machine Winning Determination Method and Program” Japanese Patent Application Laid-Open No. 2005-464 “Amusement Machine” Japanese Patent Application Laid-Open No. 2005-499 “Amusement Machine” Japanese Patent Application Laid-Open No. 2005-6866 “Amusement Machine” Japanese Patent Application Laid-Open No. 2005-7139 “Game Machine and Game Machine Winning Determination Method and Program” Patent Documents 2 to 6 aim to make random numbers to be acquired in the lottery unpredictable. In a gaming machine including a winning lottery means for performing a lottery based on a signal of a predetermined switch operated by a player and making a winning determination based on the lottery result, the winning lottery means receives the signal of the switch, The winning lottery means includes lottery based on the output of the fluctuation generator. Since the start switch operation timing does not coincide with the lottery timing, the lottery result cannot be predicted. Patent Document 3 makes random numbers unpredictable by using chattering of a contact point of a mechanical relay. In Patent Document 4, a random value is extracted after converting a fluctuation counter value into a control voltage. Patent Document 5 extracts a random value by charging and discharging a capacitor and a resistor. In Patent Document 6, a random timing for extracting a random value is determined and a random value is extracted.

  An object of the present invention is to provide a novel technique for making it difficult to predict a random value to be acquired at the time of lottery, which is different from that described in the prior art.

This invention is a gaming machine provided with a winning lottery means for performing a lottery in response to an operation on a predetermined switch and performing a winning determination based on a result of the lottery.
The winning lottery means includes a random number generator for generating a random number for lottery, a random number extractor for extracting a random number generated by the random number generator at a timing of rising or falling of the signal of the switch, A winning determination table that stores in advance the correspondence between the random value related to the lottery and the winning, and the winning determining table with reference to the winning determining table to determine whether or not the random number extracted by the random number extractor is a winning type or a winning type And an extraction timing selection unit that selects either the rising or falling timing of the signal of the switch as the extraction timing of the random number value by the random number extractor and operates the random number extractor based on the selection These are provided.

  The extraction timing selection unit selects, for example, a timing at which the switch signal rises or falls based on the random value extracted by the random number extractor.

  The extraction timing selection unit stores in advance a correspondence relationship between a random number value and a timing to be selected, which is different from the first timing determination table that stores in advance a correspondence relationship between a random value and a timing to be selected. Selection of timing by selecting either the first timing determination table or the second timing determination table based on the second timing determination table to be stored and the random value extracted by the random number extractor or according to a predetermined rule And a switching unit used for the purpose.

  The extraction timing selection unit stores, for example, the previously selected timing and the previously extracted random number value, compares the stored previous random number value with the extracted random value, and when they match or the difference between them Is smaller than a predetermined threshold, a timing different from the timing selected this time is selected.

  The extraction timing selection unit selects, for example, a timing at which the switch signal rises or falls according to a predetermined rule.

  The extraction timing selection unit includes, for example, a timing selection random number generator that generates a random number for timing selection, and based on the random number value generated by the timing selection random number generator, the rise or fall of the signal of the switch Select one of the timings.

  Furthermore, a delay device that delays the timing selected by the extraction timing selection unit by a predetermined time according to the random number value extracted by the random number extractor may be provided.

The present invention is a gaming machine winning determination method in which a lottery is performed in response to an operation on a predetermined switch, and a winning determination is made based on a result of the lottery.
A first step of generating a random number for lottery, and extracting the generated random number at either the rise or fall timing of the signal of the switch;
A second step of determining at least one of the presence / absence of a prize or the type of a prize with reference to a prize determination table that stores in advance a correspondence relationship between a random number value related to a lottery and a prize,
And a third step of selecting either the rise or fall timing of the switch signal as the random value extraction timing.

The third step is, for example,
Comparing the extracted random value with the previously extracted random value;
When the extracted random number value matches the previously extracted random value or when the difference between them is smaller than a predetermined threshold, the step of selecting a timing different from the currently selected timing as the random value extraction timing; It is to be prepared.

The present invention is a program for causing a computer to execute the above method.
The program according to the present invention is recorded on a recording medium, for example.
Examples of the medium include EPROM devices, flash memory devices, flexible disks, hard disks, magnetic tapes, magneto-optical disks, CDs (including CD-ROMs and Video-CDs), DVDs (DVD-Videos, DVD-ROMs, DVD-s). RAM), ROM cartridge, RAM memory cartridge with battery backup, flash memory cartridge, nonvolatile RAM cartridge, and the like.

  A medium is a medium in which information (mainly digital data, a program) is recorded by some physical means, and allows a processing device such as a computer or a dedicated processor to perform a predetermined function. is there.

  The present invention selects a timing of random number acquisition by a start switch in a gaming machine, either a pressing timing (rise) or a timing when the switch returns (falling) and uses it for random number extraction. By appropriately changing the selection for each game, it is possible to make it difficult to predict a random value to be acquired at the time of lottery. Therefore, even if the start switch is pressed at a certain timing, the intended random number value cannot be acquired, and fraud can be suppressed.

A gaming machine according to Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a gaming machine (also called a slot machine or a revolving gaming machine).
A player who wants to enjoy a game with the slot machine 10 first borrows a medal as a game medium from a medal lending machine (not shown) or the like, and inserts a medal directly into the medal insertion slot 100 of the medal insertion device. The medal slot 100 is provided at a substantially central height in front of the slot machine 10.

  The slot machine 10 has a square box-shaped housing 11. A square window-like display window 12 facing the player side is formed at the center and upper part of the casing 11. A symbol display window 13 through which the symbols 61 of the three rotary reels 40 can be seen is formed at the center of the display window 12 at the center. The bet switch 16 is a switch located below the rotary reel 40, and reduces the number of stored medals that are continuously inserted into the medal insertion slot 100 and stored to replace the medal insertion. The settlement switch 17 is a switch located obliquely below the rotating reel, and pays out the stored inserted medal. The start switch 30 is a lever positioned obliquely below the rotary reel 40 and starts driving the reel unit 60 on condition that a game medal is inserted or the bet switch 16 is inserted. The stop switch 50 is for stopping the driving of the reel unit 60. The reel unit 60 is composed of three rotating reels 40. Each rotary reel 40 includes a rotary drum made of synthetic resin and a tape-like reel tape 42 attached around the rotary drum. A plurality of (for example, 21) symbols 61 are displayed on the outer peripheral surface of the reel tape 42. Reference numeral 62 denotes a liquid crystal display unit for performing various effects.

  Inside the slot machine 10, a control device for controlling the overall operation of the slot machine 10 is incorporated as will be described later. The control device is configured around a CPU and includes a ROM, a RAM, an I / O, and the like. The CPU (processing unit) is operated by reading a program stored in a ROM (storage unit) in response to the player's operation. Specifically, the CPU (processing unit) is operated by the start switch 30 and the stop switch 50. Based on this, the rotation and stop of the rotary reel 40 are controlled, and the display of lamps, speakers, and the like are controlled. Temporary data necessary for the operation of the CPU is RAM (storage unit: RAM is generally a volatile memory, and data is lost in principle when the power is turned off. A backup power source such as a battery may be prepared. In this case, data is not lost even if the power is cut off). The CPU performs a predetermined operation in accordance with a program recorded in the ROM, records temporary data necessary for processing in the RAM, and reads out and refers to the recorded data as necessary.

  The start switch 30 is a lever that is positioned obliquely below the rotary reel 40 as described above. The start switch 30 can be obtained on the condition that a game medal is inserted or the bet switch 16 is inserted or according to a winning determination. "Replay)" is to start driving the reel unit 60 on condition that a predetermined time has elapsed since the previous game.

  The stop switch 50 is for stopping the driving of the reel unit 60 as described above. Specifically, the stop switch 50 includes three switches corresponding to each rotary reel 40, and one stop switch 50 is disposed below each rotary reel 40. The operation of the stop switch 50 corresponding to the rotating reel 40 is set to stop the rotation of the corresponding rotating reel 40.

  When the start switch 30 is operated on the condition that the medal is inserted or the bet switch 16 is inserted, or on the condition that a predetermined time elapses from the previous game at the time of the “replay”, the reel unit 60 is driven, and the three The rotary reel 40 starts to rotate. Thereafter, when one of the stop switches 50 is operated, the rotation of the corresponding rotary reel 40 is stopped. When all three stop switches 50 are operated, the rotation of the three rotary reels 40 is stopped. At this time, if a predetermined symbol 61 on the effective pay line of the display window 13 stops, it is determined that the winning is made, and a predetermined number of medals are paid out through a hopper unit (not shown). In addition, you may credit instead of paying out medals.

  When the control device controls the rotation and stop of the rotary reel 40 based on the operation of the start switch 30 and the stop switch 50, the control device determines whether or not a winning qualification is obtained based on a predetermined internal lottery probability. A winning lottery means for performing a lottery. A winning flag is established when the internal lottery result by the winning lottery means is a win, and a winning is made on the condition that the combination of the stopped symbols of the rotating reel 40 matches a predetermined winning symbol while the winning flag is established. Is determined, and the player is given a medal payout or a special game advantageous to the player.

  FIG. 2 is a block diagram showing an electrical schematic structure of the slot machine 10. In this figure, the display about the power supply system is omitted. The slot machine 10 includes a main substrate 1 (first processing unit) and a sub substrate 2 (second processing unit) that operates in response to a command from the main substrate 1 (first processing unit). At least the main substrate 1 is accommodated inside the case so that it cannot be contacted from the outside, and a sealing process is performed so that traces remain when the substrates are removed.

  The main board 1 is for performing an internal lottery in response to a player's operation, and processing such as reel rotation / stop and medal payout. The main board 1 includes a CPU that performs a control operation according to a preset program, a ROM that is a storage unit that stores the program, and a RAM that temporarily stores processing results and the like.

  The sub-board 2 is for receiving a command signal from the main board 1 and notifying the result of the internal lottery and performing various effects. The sub-board 2 includes a CPU that performs a control operation according to a preset program corresponding to the command signal, a ROM that is a storage unit that stores the program, and a RAM that temporarily stores processing results and the like.

  The sub-board 2 receives a command from the main board 1 and performs processing such as rendering according to the command. The flow of commands is only one from the main board 1 to the sub board 2, and conversely, no command or the like is issued from the sub board 2 to the main board 1.

  The main board 1 includes a start switch 30, a stop switch 50, a reel drive unit 70, a reel position detection circuit 71, a hopper drive unit 80, a hopper 81, and a medal detection unit for counting the number of medals paid out from the hopper 81. 82 is connected. A peripheral board (local board) such as a control board 200 of the liquid crystal display device 62, a speaker 201, and an LED board 202 is connected to the sub board 2. Hereinafter, these peripheral substrates / devices except for the start switch 30 and the stop switch 50 will be described.

  The reel driving unit 70 is a circuit that drives a stepping motor (not shown) that rotationally drives the three reels 40. Each stepping motor is subjected to 1-2 phase excitation by the reel drive circuit 70 and rotates once when a drive signal having a predetermined number of pulses is supplied.

  The reel position detection circuit 71 is provided in the vicinity of the reel 40, receives an output pulse signal from a photo interrupter (not shown) for detecting the rotation position of the reel 40, detects the rotation position of each of the three reels 40, and detects it. A signal is output. A photo interrupter (not shown) detects a shielding plate provided on each reel 40 and generates a reset pulse every time each reel 40 rotates once. This reset pulse is given to the CPU of the main board 1 via the reel position detection circuit 71. In the RAM of the main board 1, a count value corresponding to the rotation position within one rotation range is stored for each reel 40, and when the CPU receives the reset pulse, the count value formed in the RAM is stored. Clear to “0”. By this clearing process, the deviation generated between the movement display of each symbol and the rotation of each stepping motor is eliminated every rotation.

  The hopper driving unit 80 is a circuit that drives a motor of a hopper 81 that stores medals and pays out the number of medals corresponding to the designated winning.

  The medal detection unit 82 is for counting the number of medals paid out from the hopper 81. The CPU of the main board 1 stops driving by the hopper driving unit 80 when the actually paid out medal count value received from the medal detection unit 82 reaches the predetermined payout number data corresponding to the winning. Finish paying out. A predetermined number of medals are paid out to the player by the hopper driving circuit 80 and the medal detection unit 82 based on a winning obtained as a result of the game.

The liquid crystal control board 200 is a circuit for driving the liquid crystal display unit 62.
The speaker 201 is for generating sound such as voice and sound effects.
The LED substrate 202 is a circuit for driving a display lamp and a back lamp (not shown).

  The liquid crystal display device 62 controlled by the liquid crystal control substrate 200 and the LED substrate 202 including the speaker 201 and the display lamp constitute an effect display device. This effect display device is for notifying a player of a prize or the like, or for teaching a user a specific small role during a certain game with some action during a so-called assist time (AT).

  The ROM of the main board 1 stores game processing procedures executed in the slot machine 10 as a sequence program, and stores a winning probability table, a symbol table, a winning symbol combination table, and the like. Has been. The winning probability table is divided so that the random number values extracted by the random number generation unit (random number generator and random number extractor described later) are divided into each winning mode, and a certain range of numerical values generated by the random number generation unit. Data for dividing the random number extracted from the inside into each winning mode is stored. That is, the winning probability table has an area divided for each winning mode corresponding to the entire area of random numbers taken by the random number generator. For example, a range of 0 to a certain number is divided into a plurality, one division (area) is excluded, and the other division (area) is set as winning 1, winning 2,.

  The random number generator has a random number generation function that generates pseudo random numbers by rapidly updating numerical values in a certain range, and a sampling function that extracts an arbitrary random number value from the generated random numbers in response to the player's operation. It is to be prepared. As a specific example, it is composed of a counter and a latch. In this specification, “random number” means the whole series of values generated by the random number generator, and “random number” means any value arbitrarily extracted from the series of random numbers. And For example, when the random number generator generates arbitrary numerical values such as r1, r2, r3, r4, r5,..., The whole of r1, r2, r3, r4, r5,. (To be precise, a random number sequence), and a sampled value (for example, r3, usually one value is extracted) is a random value. In the following description, “random number value” is also referred to as “random number data”.

  The extracted random number data is collated with each of the winning determination area data divided for each winning mode in all the regions corresponding to the random number generated from the random number generator, and the winning mode to which the extracted random number data belongs is determined. The corresponding winning is determined. For example, it is determined which category (region) of the winning probability table the extracted random number value belongs to, and if the category is, for example, a category of winning 1, it is determined as “winning 1”. Similarly, if the extracted random number value belongs to an out-of-range category (region) in the winning determination table 6, it is determined as “out”. For example, when the evaluation of the lottery process is out of place, it is set so that the predetermined symbols are not aligned (so-called kicking), and when winning, the predetermined symbols are aligned on the condition that the stop switch is pressed at a predetermined timing. (So-called pull-in). And if predetermined symbols are prepared, medals corresponding to winning symbols are paid out. Various winnings are generated under the probability according to the data setting of the winning probability table, and the symbol stop control is performed. For example, the operating hours of the day are not influenced by the skill of the player. The total medal payment rate is maintained almost constant.

  As described above, the ROM of the main board 1 stores a program, a winning probability table, a symbol table, a winning symbol combination table, and the like, which are collectively referred to as being stored in the ROM. This is called ROM data. Alternatively, they may be collectively referred to as program data in terms of a program for causing the CPU to perform an operation for control processing and data related thereto.

  FIG. 3 is a block diagram of the winning lottery means according to the embodiment of the invention. At least a part of functions (for example, a determination function) of the winning lottery means is realized by the above CPU executing a program stored in the ROM of the main board 1 or by hardware such as an IC. As shown in FIG. 3, the winning lottery means includes a random number generator 3, a random number extractor 4, a determining unit 5, and a winning determination table 6. The gaming machine according to the embodiment of the present invention further selects either the start or fall timing of the start switch signal as the random number extraction timing by the random number extractor 4, and based on this selection, the random number extractor 4 And an extraction timing selection unit 7 for operating. The random number extractor 4 extracts the random number generated by the random number generator 3 at the timing of either rising or falling of the start switch signal. The configuration of the winning lottery means is not limited to that shown in FIG.

  The random number generator 3 generates a random number for winning lottery within a predetermined area. For example, an arbitrary numerical value is generated with a predetermined probability in a range of 0 to a certain number.

  The random number extractor 4 extracts a random number generated by the random number generator 3 at the timing of a predetermined switch operation (for example, operation of the start switch 30). The random number generator 3 continuously generates random numbers at predetermined intervals, and a part of them is extracted by the random number extractor 4.

  The winning determination table 6 has a region divided for each winning manner corresponding to the entire region of random numbers taken by the random number generator 3. For example, a range of 0 to a certain number is divided into a plurality, one division (area) is excluded, and the other division (area) is set as winning 1, winning 2,.

  The determination unit 5 refers to the extracted random number data extracted by the random number extractor 4 with the lottery probability data in the winning determination table 6. That is, the extracted random number data is collated with each winning determination area data segmented for each winning mode in the entire random number area taken by the random number generator 3, and the winning corresponding to the winning mode to which the extracted random number data belongs is determined. To decide. For example, it is checked which category (area) of the winning determination table 6 the extracted random number value belongs to, and if the category is, for example, a category of winning 1, it is determined as “winning 1”. Similarly, if the extracted random number value belongs to an out-of-range category (region) in the winning determination table 6, it is determined as “out”.

  For example, when the evaluation of the lottery process is out of place, it is set so that the predetermined symbols are not aligned (so-called kicking), and when winning, the predetermined symbols are aligned on the condition that the stop switch is pressed at a predetermined timing. (So-called pull-in). And if predetermined symbols are prepared, medals corresponding to winning symbols are paid out.

  In the gaming machine according to the embodiment of the invention, the random number extractor 4 extracts a random value at a timing (rise) when the start switch 30 is turned on from the off state, or the start switch 30 is turned off from the on state. The random number value is extracted at the same timing (falling). Which of these is selected depends on the control of the extraction timing selection unit 7. The conventional random number extraction timing was only the rising edge of the signal of the start switch 30, but by appropriately selecting one of the rising edge and the falling edge, the above-described fraud (random number value acquired at the time of lottery) Prediction) can be prevented.

  The operation of the winning lottery means in FIG. 3 will be described with reference to the operation flowchart in FIG. 4, the timing chart in FIG. 5, and the block diagram in FIG.

  The timing chart of FIG. 5 shows the relationship between the output (random number value) of the random number generator (counter) 3 and the output signal of the start switch 30, the horizontal axis indicates time, and the vertical axis indicates voltage value ( Indicates a digital value (for a random number generator (counter)) of 16 bits (0000 to FFFF in hexadecimal) or for a start switch press signal. Reference numerals t1, t3, t5, and t7 are attached to the rising timing of the output signal of the start switch 30, and reference numerals t2, t4, t6, and t8 are attached to the falling timing. It is assumed that the time has elapsed from t1 to t8. The output cycle of the random number generator 3 is shorter than the width of the pressing signal of the start switch 30. In FIG. 5, the start switch 30 is pressed four times. The random number extraction timings are A (time t1), B (time t4), C (time t6), and D (time t7), respectively. ). Due to the action of the extraction timing selection unit 7, the random number extraction timing changes as “rise”-> “fall”-> “fall”-> “rise”.

FIG. 6 is a more specific block diagram of the winning lottery means of FIG. This figure shows a configuration in which extraction timing selection is performed with reference to the timing determination table 7a. The timing determination table 7a stores in advance the correspondence between the random number value and the timing to be selected. For example, a table is stored in which the rising timing is selected when any one bit (for example, the least significant bit (LSB)) of the random number value is 0, and the falling timing is selected when the bit is 1. This correspondence is arbitrary, and the range that the random number value can take is divided into two (if it is 16 bits, for example, divided into 0000-7FFF and 8000-FFFF), the startup timing is assigned to one, and the other is assigned to A fall timing can be assigned. Each bit of the random number value may be added (carrying is not required), and the rising timing may be selected when the total value is 0, and the falling timing may be selected when the total value is 1.
The timing determination table 7a can be shared with the winning determination table 6.

  In the example of FIG. 6, a plurality of timing determination tables are provided to make random number prediction more difficult, and these are used by switching appropriately. That is, a first timing determination table 7a-1 that stores in advance a correspondence relationship between a random value and a timing to be selected, and a second timing determination table 7a-2 that stores the correspondence relationship different from the first timing determination table in advance. And a switching unit 7b that uses either the first timing determination table 7a-1 or the second timing determination table 7a-2 for timing selection.

  For example, one table stores a table in which the rising timing is selected when any one bit of the random number is 0, and the falling timing is selected when the random number is 1, and the other table has the bit set to 1 A table is stored in which the rise timing is selected at 0, and the fall timing is selected at 0. This is obtained by reversing the correspondence between the contents of the two tables 7a-1 and 7a-2. Alternatively, the other table may be stored with each bit of the random number value added and when the total value is 0, the rising timing is selected and when the total value is 1, the falling timing is selected. This will make the contents of the two tables completely different.

The switching unit 7b is based on the random value extracted by the random number extractor (latch register) 4 (for example, as described above, (1) based on an arbitrary 1 bit of the extracted random value, (2) two Based on the determination of which of the divided random value values the extracted random number belongs to (3) based on the total value of each bit of the extracted random value), the first timing determination table 7a-1 or 2 Select one of the timing determination tables 7a-2. Or you may select according to a predetermined rule. As the rule, for example, a rule of switching every time the start switch 30 is pressed, that is, every time a random number is extracted, a rule of switching when the same timing continues for a predetermined number of times, and the like can be considered. Or you may select completely irregularly.
In the following description, the timing determination table may be simply referred to as “determination table”.

  In FIG. 6, the fall / rise switch 7c is operated by the output of either the table 7a-1 or 7a-2 selected by the switch 7b, and a timing signal corresponding to the selection is generated by a random number extractor (latch register). ) 4 is input. Although a general-purpose IC can be used as the latch register 4, the IC normally operates at any one timing of the fall / rise of a signal for latching (extraction). Therefore, in order to select the fall / rise, a signal obtained by inverting the logic of the push signal from the start switch 30 through the inverter 7d is prepared. Then, by selecting either the inverted output of the inverter 7d or the non-inverted signal that is the input signal of the inverter 7d by the switch 7c, the selection of the fall / rise is performed (for example, the latch register 4 rises the signal). When latching data by raising, when the push signal from the start switch 30 is positive logic and selecting a non-inverted signal that is an input signal of the inverter 7d, a random value is extracted at the rising timing and an inverted output of the inverter 7d is selected. Then, a random value is extracted at the fall timing). 3a is a clock generator (oscillator) that generates a clock having a predetermined frequency, and 3b is a counter that operates with the clock and repeatedly outputs a numerical value from 0 to a predetermined value. Reference numeral 4 denotes a latch register as a random number extractor.

Next, the flowchart of FIG. 4 will be described.
As shown in FIG. 4, the winning lottery means in FIG. 3 performs initial setting when the gaming machine is powered on. That is, (1) In the extraction of the first random number value, it is selected whether to use the rising / falling of the signal of the start switch 30, and (2) the second (first and subsequent) random number value is extracted. The table used for timing selection is determined (S1).

  When the start switch 30 is pressed (YES in S2), the random number value is extracted at the extraction timing (either rise / fall) of the selected random value (S3).

  A winning determination is made based on the extracted random value (S4). Since this process is publicly known, its detailed description is omitted.

  It is determined whether or not the extracted random value is the same as the previous one (S5). When they are the same (YES in S5), a different random number acquisition timing is forcibly selected next time regardless of the extracted random value (S6). For example, when the two random number values extracted by the codes B and C in FIG. 5 are the same (or when the difference is smaller than a predetermined threshold value), the next random number acquisition timing is the random number acquisition timing of the code C ( Random values are extracted with the code D at a timing different from the time t6 (falling) (time t7: rising). By the processes of S5 and S6, it is possible to make it more difficult to predict the random value. Since the same random number value may be acquired by chance, when the same or almost the same random number value is acquired over a predetermined number of times (for example, 5 times, 10 times) or more, S6: A timing change may be performed.

  FIG. 7 shows a block diagram of the winning lottery means for executing the processes of S5 and S6 of FIG. In the figure, 7e stores the previously extracted random number value selected last time (and may store the previous timing), and 7f stores the previously stored random number value this time. The coincidence detection unit 7f selects a timing different from the timing selected this time when they match each other or when the difference between them is smaller than a predetermined threshold.

  When the extracted random value is not the same as the previous one (NO in S5), a random value acquisition timing is selected based on the extracted random value and the selected random number table (S7). For example, as described above, (1) based on an arbitrary 1 bit of the extracted random value, (2) based on the determination of which of the random number values divided into two areas the extracted random number belongs to (3) Based on the total value of each bit of the extracted random number value, either the rising / falling timing is selected as the random number acquisition timing (these are examples).

  Based on the extracted random number value, a determination table to be used next time is selected (S8). For example, as described above, (1) based on an arbitrary 1 bit of the extracted random value, (2) in determining which of the random value values divided into two areas the extracted random value belongs to (3) Based on the total value of each bit of the extracted random number value, either the first timing determination table 7a-1 or the second timing determination table 7a-2 is selected.

  When there is only one timing determination table, the initial setting (2) of S1 and the process of S8 are not necessary.

  The processing of FIG. 4 causes the next extraction timing to change in accordance with the winning random number value to be extracted (when the start switch 30 is pressed four times in FIG. The extraction timing changes as in (B), falling (C), and rising (D).

  Furthermore, when the same random number value is extracted in duplicate by the processing of S5 and S6, a timing different from the previous time is forcibly selected.

  In addition, as shown in FIG. 7, the randomness of the random number value extraction timing is improved by setting two relationship determination tables in which the correspondence relationship between the random number value and the rise / fall timing is reversed. It is done.

  In the embodiment of the invention, since the random number extraction timing is switched using the extracted random number value, it is not necessary to additionally provide a device for randomizing the random value extraction timing, and no major design change is made. It is possible to effectively prevent illegal acts aiming at random values.

  The method of switching the random number value at the timing when the start switch is turned on from the off (startup) or the random number value is extracted at the timing when the start switch is turned off from the on (falling) , Did not exist in the past.

  In the above description, the next extraction timing is selected based on the extracted random number value. Instead, the extraction timing can be selected regularly. FIG. 8 shows a block diagram for this purpose. Reference numeral 7g denotes a switching signal generator that operates the switch 7c according to a predetermined rule and selects either the rising or falling timing. As a rule of the switching signal generator 7g, for example, a rule of switching every time the start switch 30 is pressed, that is, every time a random value is extracted, a rule of switching when the same timing continues for a predetermined number of times, and the like. Conceivable.

  Alternatively, the extraction timing can be selected at random. FIG. 7 shows a block diagram for this purpose. 7h is a timing selection random number generator for generating random numbers for timing selection. A timing selection random number generator 7h generates a rising or falling timing based on the extracted random number value. As a timing selection method, the selection method based on the extracted random number value can be applied. The timing selection random number generator 7h includes, for example, a clock generator and a counter. It is preferable to select the clock so that the random number generation cycle of the timing selection random number generator 7h does not have an integer ratio with the random number generation cycle for the lottery by the clock generator 3a and the counter 3b.

  6 to FIG. 9, the timing selected by the extraction timing selection unit 7 (fall / rise switch 7c) is delayed by a predetermined time according to the random number value extracted by the random number extractor 4. A delay device 7g may be further provided. As shown in FIG. 10, the delay device 7 g is provided between the output terminal of the changeover switch 7 c and the input terminal of the random number extractor (latch register) 4. For example, if the random number value is an odd number (LSB = 1), the delay device 7g adds +0.1 seconds to the determined timing, and if the random number value is an even number (LSB = 0), adds +0.3 seconds to the determined timing. By doing so, the randomness of the random number extraction timing can be improved. The delay device 7g includes, for example, two CR delay circuits each including a capacitor and a resistor. The delay device 7g is configured to switch between these by using a random value LSB. This is an example, and other known configurations can be used.

  In the above description, FIG. 6 to FIG. 10 show hardware block diagrams, but it goes without saying that these embodiments can also be realized in software by a combination of a program and a CPU operating thereby.

  Further, the function of each element shown in each block diagram may be realized by two or more physical means, or the function of two or more elements may be realized by one physical means.

  The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

It is a front view of a gaming machine (slot machine). 1 is a block diagram of a gaming machine according to an embodiment of the invention. It is a block diagram of the winning lottery means of the gaming machine according to the embodiment of the invention. It is a flowchart of the random value acquisition timing selection process which concerns on embodiment of invention. It is a timing chart for demonstrating the random value acquisition timing selection process which concerns on embodiment of invention. 1 is a block diagram of a random value acquisition timing selection device according to an embodiment of the invention. It is another block diagram of the random value acquisition timing selection device according to the embodiment of the invention. It is another block diagram of the random value acquisition timing selection device according to the embodiment of the invention. It is another block diagram of the random value acquisition timing selection device according to the embodiment of the invention. It is explanatory drawing of the delay apparatus which delays the random value acquisition timing which concerns on embodiment of invention. It is a timing chart for demonstrating the conventional random value acquisition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main board 2 Sub board 3 Random number generator 4 Random number extractor 5 Judgment part 6 Winning judgment table 7 Extraction timing selection part 7a-1 1st timing judgment table 7a-2 2nd timing judgment table 7b Switching part 7c Falling down / rise Increase switch 7d Inverter 7e Random value storage unit 7f Match detection unit 7g Switching signal generator 7h Timing selection random number generator 7j Delay device 10 Slot machine 11 Housing 12 Display window 13 Symbol display window 16 Bet switch 17 Checkout switch 30 Start switch 40 Reel 42 Reel Tape 50 Stop Switch 60 Reel Unit 61 Symbol 62 Liquid Crystal Display Unit 70 Reel Drive Unit 71 Reel Position Detection Circuit 80 Hopper Drive Unit 81 Hopper 82 Medal Detection Unit 100 Medal Insert Port 200 Liquid Crystal Control Board 201 Over Ca 202 LED substrate 304 medal payout opening 311 medal tray (lower tray)

Claims (10)

In a gaming machine provided with a winning lottery means for performing a lottery in response to an operation on a predetermined switch and performing a winning determination based on a result of the lottery,
The winning lottery means includes a random number generator for generating a random number for lottery, a random number extractor for extracting a random number generated by the random number generator at a timing of rising or falling of the signal of the switch, A winning determination table that stores in advance the correspondence between the random value related to the lottery and the winning, and the winning determining table with reference to the winning determining table to determine whether or not the random number extracted by the random number extractor is a winning type or a winning type And an extraction timing selection unit that selects either the rising or falling timing of the signal of the switch as the extraction timing of the random number value by the random number extractor and operates the random number extractor based on the selection And a gaming machine comprising:   The gaming machine according to claim 1, wherein the extraction timing selection unit selects a timing at which the switch signal rises or falls based on the random number value extracted by the random number extractor.   The extraction timing selection unit stores in advance a correspondence relationship between a random number value and a timing to be selected, which is different from the first timing determination table that stores in advance a correspondence relationship between a random value and a timing to be selected. Selection of timing by selecting either the first timing determination table or the second timing determination table based on the second timing determination table to be stored and the random value extracted by the random number extractor or according to a predetermined rule The gaming machine according to claim 2, further comprising a switching unit used for the purpose.   The extraction timing selection unit stores the previously selected timing and the previously extracted random number value, compares the stored previous random number value with the extracted random number value, and when these match or the difference between them is determined in advance. 2. The gaming machine according to claim 1, wherein when it is smaller than a predetermined threshold, a timing different from the timing selected this time is selected.   The gaming machine according to claim 1, wherein the extraction timing selection unit selects a timing at which the switch signal rises or falls according to a predetermined rule.   The extraction timing selection unit includes a timing selection random number generator that generates a random number for timing selection, and either the rise or fall of the signal of the switch based on the random value generated by the timing selection random number generator The game machine according to claim 1, wherein the timing is selected.   The delay device according to any one of claims 1 to 6, further comprising: a delay device that delays a timing selected by the extraction timing selection unit by a predetermined time in accordance with a random value extracted by the random number extractor. The gaming machine described in 1. A winning determination method for a gaming machine that performs a lottery in response to an operation on a predetermined switch, and performs a winning determination based on a result of the lottery,
A first step of generating a random number for lottery, and extracting the generated random number at either the rise or fall timing of the signal of the switch;
A second step of determining at least one of the presence / absence of a prize or the type of a prize with reference to a prize determination table that stores in advance a correspondence relationship between a random number value related to a lottery and a prize,
And a third step of selecting either a rise or fall timing of the switch signal as a random number extraction timing. The third step includes
Comparing the extracted random value with the previously extracted random value;
When the extracted random number value matches the previously extracted random value or when the difference between them is smaller than a predetermined threshold, the step of selecting a timing different from the currently selected timing as the random value extraction timing; The game machine winning determination method according to claim 8, further comprising: A program for causing a computer to execute a winning determination method of a gaming machine that performs a lottery in response to an operation on a predetermined switch and performs a winning determination based on a result of the lottery,
A first step of generating a random number for lottery, and extracting the generated random number at either the rise or fall timing of the signal of the switch;
A second step of determining at least one of the presence / absence of a prize or the type of a prize with reference to a prize determination table that stores in advance a correspondence relationship between a random number value related to a lottery and a prize,
A program for executing a third step of selecting either a rise or fall timing of the switch signal as a random value extraction timing.

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