JP2005040303A - Game machine, method for judging win for game machine, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a game machine which prevents a specified player from having an advantage in the lottery probability without allowing acquisition of a specific random number even if a start switch is operated at a fixed interval. <P>SOLUTION: In the game machine with a prize winning lottery means adapted to judge the winning of prizes based on the result of the lottery done by the signal of the switch, the prize winning lottery means is provided with a random number generator for generating the random numbers for the prize winning lottery, a fluctuation generator which receives the signal of the switch and applies the fluctuation to the signal to be outputted, a random number extractor which extracts the random numbers generated from the random number generator based on the output of the fluctuation generator, a bit replacement part which carries out the bit replacement for the random numbers extracted , a prize winning judgment table into which a corresponding relationship is previously stored between the numerical values involved in the lottery and the winning of prizes and a judging part which judges at least any of the possible winning of prizes and the type of the winning of prizes based on the output of the bit replacement part referring to the prize winning judgment table. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gaming machine, a winning determination method for a gaming machine, and a program.
[0002]
[Prior art]
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.
[0003]
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.
[0004]
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 a predetermined condition, 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.
[0005]
[Problems to be solved by the invention]
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. The possibility that the player could make the lottery probability over a predetermined value by skillfully operating the start switch could not be denied.
[0006]
Therefore, the present invention provides a gaming machine, a winning determination method for a gaming machine, and a program in which a specific random number cannot be obtained even by operating a start switch, and a specific player is not advantageous in terms of a lottery probability. Objective.
[0007]
[Means for Solving the Problems]
The present invention is a gaming machine comprising a winning lottery means for performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
The winning lottery means includes a random number generator for generating a random number for winning lottery, a fluctuation generator for receiving a signal from the switch, adding a fluctuation to the signal, and outputting the fluctuation, and a random number generated by the random number generator. A random number extractor that extracts based on the output of the fluctuation generator, a bit replacement unit that performs bit replacement on the extracted random number, a winning determination table that stores in advance a correspondence between a numerical value related to a lottery and a winning, and the winning determination table , And a determination unit that determines at least one of the presence / absence of a winning or the type of winning based on the output of the bit replacing unit.
[0008]
The present invention is a gaming machine comprising a winning lottery means for performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
The winning lottery means performs a bit replacement on the extracted random number, a random number generator that generates a random number for winning lottery, a random number extractor that extracts a random number generated by the random number generator based on the signal of the switch A bit replacement unit, a winning determination table that preliminarily stores a correspondence between a numerical value related to a lottery and a winning, and at least one of the presence / absence of a winning or the type of winning based on the output of the bit replacing unit while referring to the winning determination table And a determination unit for determining
In the bit replacement unit, at least two sets of bits are replaced.
[0009]
The present invention is a gaming machine comprising a winning lottery means for performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
The winning lottery means performs a bit replacement on the extracted random number, a random number generator that generates a random number for winning lottery, a random number extractor that extracts a random number generated by the random number generator based on the signal of the switch A bit replacement unit, a winning determination table that preliminarily stores a correspondence between a numerical value related to a lottery and a winning, and at least one of the presence / absence of a winning or the type of winning based on the output of the bit replacing unit while referring to the winning determination table And a determination unit for determining
In the bit replacement section, the output change cycle is about the same as or less than the error of the fraudulent device, and the change amplitude is the same in the winning determination table as the correspondence relationship between winning and losing. Bit switching is performed so as to satisfy both conditions of being a size that can be switched alternately.
[0010]
Preferably, at least the most significant bit and the least significant bit are exchanged in the bit exchange unit.
[0011]
The present invention is a gaming machine comprising a winning lottery means for performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
The winning lottery means performs a bit replacement on the extracted random number, a random number generator that generates a random number for winning lottery, a random number extractor that extracts a random number generated by the random number generator based on the signal of the switch A bit replacement unit, a winning determination table that preliminarily stores a correspondence between a numerical value related to a lottery and a winning, and at least one of the presence / absence of a winning or the type of winning based on the output of the bit replacing unit while referring to the winning determination table And a determination unit for determining
In the bit replacement unit, the bit replacement state is changed at a predetermined opportunity.
[0012]
The trigger includes, for example, a signal from a start lever, a signal from a stop switch, a reel rotation start signal, a reel rotation stop signal, a time signal, a date signal, a day signal, and a winning notification signal.
[0013]
When random numbers are continuously generated within a predetermined range, the bit replacement state of the bit replacement unit may be changed.
[0014]
The bit replacement state of the bit replacement unit may be changed when a random number is generated exceeding a predetermined number of times within a predetermined range.
[0015]
For example, the bit exchange unit includes a shift register, and performs bit exchange in response to a command signal and a clock signal in the shift direction.
[0016]
For example, the bit replacement unit includes a memory, and a plurality of bit replacement patterns are stored in advance in the memory, and at least a part of the address signal is received and one of the plurality of bit replacement patterns is selected to perform bit replacement. Do.
[0017]
For example, the bit replacement unit includes a multiplexer, and performs bit replacement in response to a control signal in the replacement state.
[0018]
A fluctuation generator that receives the signal of the switch and adds the fluctuation to the signal and outputs the fluctuation, and the random number extractor extracts a random number generated by the random number generator based on the output of the fluctuation generator. Also good.
[0019]
Preferably, the fluctuation generator irregularly varies the time from the reception of the signal related to the lottery to the output thereof every time.
[0020]
The present invention is a method for performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging bits for the extracted random number;
A fourth step of determining at least one of the winning type and the winning type of the random number in which the bits are replaced in the third step with reference to a winning determination table prepared in advance,
In the third step, at least two or more sets of bits are exchanged.
[0021]
The present invention is a method for performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging bits for the extracted random number;
A fourth step of determining at least one of the winning type and the winning type of the random number in which the bits are replaced in the third step with reference to a winning determination table prepared in advance,
In the third step, the cycle of the output change due to the bit replacement is about the same as or less than the error of the fraudulent device, and the amplitude of the change is that the correspondence relationship in the winning determination table is a winning. It is characterized by satisfying both conditions that the size is such that the loses are alternately arranged.
[0022]
The present invention is a method for performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging bits for the extracted random number;
A fourth step of determining at least one of the winning type and the winning type of the random number in which the bits are replaced in the third step with reference to a winning determination table prepared in advance,
In the third step, the bit replacement state is changed at a predetermined opportunity.
[0023]
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.
[0024]
In addition, a communication medium such as a wired communication medium such as a telephone line and a wireless communication medium such as a microwave line is included. The Internet is also included in the communication medium here.
[0025]
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.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 of the Invention
A gaming machine according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a gaming machine (slot machine) according to an embodiment of the invention.
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 position in front of the slot machine 10.
[0027]
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 to replace 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.
[0028]
Inside the slot machine 10, although not shown, a control device for controlling the entire operation of the slot machine 10 is incorporated. Although not shown, the control device is configured around a CPU and includes a ROM, a RAM, an I / O, and the like. Then, the CPU operates by reading a program stored in the ROM, and controls the rotation and stop of the rotary reel 40 based on the operation of the start switch 30 and the stop switch 50, and also controls the display of lamps, speakers, and the like.
[0029]
The start switch 30 is a lever that is positioned obliquely below the rotary reel 40 as described above, on condition that a game medal is inserted or the bet switch 16 is inserted, or from the previous game at the time of “Replay” (Repay). This is for starting the driving of the reel unit 60 on condition that the predetermined time elapses.
[0030]
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.
[0031]
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 has elapsed from the previous game at the time of “replay”, the reel unit 60 is driven, and the three units The rotating 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, when a preset symbol 61 stops on the effective pay line of the display window 12, a predetermined number of medals are paid out through a hopper unit (not shown). In addition, you may credit instead of paying out medals.
[0032]
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 winning device performs a lottery to determine whether or not a winning qualification is obtained based on a predetermined lottery probability. Includes lottery means. When the lottery result by the winning lottery means is a win, a winning flag is established, and the winning combination is established 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. It is determined so that the player is given a medal or a special game.
[0033]
FIG. 2 is a block diagram of the winning lottery means. The winning lottery means is included in the control device, and specifically, the device is realized by the CPU executing the program stored in the ROM of the main board or by hardware. As shown in FIG. 2, the winning lottery means includes a fluctuation generator 1, a random number generator 2, a random number extractor 3, a determination unit 4, a winning determination table 5, and a bit replacement unit 6. The configuration of the winning lottery means is not limited to that shown in FIG.
[0034]
The fluctuation generator 1 receives a signal from the start switch 30, adds fluctuation to the signal, and outputs it. Details of this will be described later.
[0035]
The random number generator 2 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.
[0036]
The random number extractor 3 extracts a random number generated by the random number generator 2 under a predetermined condition (for example, operation of the start switch 30). The random number generator 2 continuously generates random numbers at a predetermined interval, and a part of them is extracted by the random number extractor 3.
[0037]
The output of the random number extractor 3 is input to the bit replacement unit 6. The bit replacement unit 6 rearranges the output bits of the random number extractor 3 and converts them into other data. When a counter is used as the random number generator 2, the counter simply increases as 0 → 1 → 2 →... → 15 (in the case of 4 bits as an example). Simply increasing or decreasing the numerical value by using a simple counter circuit merely counts at a constant interval, so that it is easy to aim at a specific numerical value. Therefore, the random number value input to the determination unit is made irregular by replacing the bits in the bit replacement unit 6 to make it difficult to aim. Details of the bit changer 6 will be described later.
[0038]
The winning determination table 5 has an area divided for each winning mode corresponding to the entire area of random numbers taken by the random number generator 2. 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,.
[0039]
The determination unit 4 refers to the random number data extracted by the random number extractor 3 and subjected to bit replacement by the bit replacement unit 6 as the lottery probability data of the winning determination table 5. 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 2, and the winning corresponding to the winning mode to which the extracted random number data belongs is determined. To decide. For example, it is determined which category (area) of the winning determination table 5 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 5, it is determined as “out”.
[0040]
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.
[0041]
FIG. 3 shows a specific example of the bit replacement unit 6. In the figure, a counter is used as the random number generator 2 and a latch is used as the random number extractor 3. 7 is an oscillator for supplying a clock to the counter 2, and 8 is a CPU connected to the CPU data bus. In the figure, a bit replacement unit 6 performs bit replacement by replacing a wiring or a printed circuit board pattern. For this reason, the bit replacement pattern is fixed. In the example shown in the figure, the LSB (QH) of the random number extractor 3 is connected to the MSB (D1) of the CPU data bus, and the other bits of the random number extractor 3 are changed to bits of the CPU data bus each having a weight reduced by ½. It is connected. That is, QG is connected to D8, QF is connected to D7, and similarly, QA is connected to D2. Such bit replacement is equivalent to shifting one bit to the right.
[0042]
How the output of the random number generator 2 is converted when connected as described above will be described with reference to FIGS. When a counter is used as the random number generator 2, the random number generator 2 sequentially outputs 0, 1, 2, 3, 4,. However, if the bits are replaced by the bit replacement unit 6 as described above, the data received by the CPU 8, that is, the data received by the determination unit 4 and compared with the contents of the winning determination table 5 are 0, 8, 1, 9, 2, ... In this way, the numerical value changes greatly even with simple bit replacement. Anyone who commits cheating knows that the random number generator 2 is regularly output as 0, 1, 2, 3, 4,..., And the jackpot interval is constant. ing. Therefore, it is difficult to predict the lottery result simply by exchanging the bits as described above, which is effective in preventing fraud.
[0043]
The winning lottery is performed based on the pressing signal of the start switch 30, but in the embodiment of the present invention, the pressing signal is not used as it is, but the signal after the fluctuation signal is given to the pressing signal by the fluctuation generator 1. It is characterized by using. This will be described with reference to FIG.
[0044]
FIG. 6A is a timing chart showing the relationship between the pressing signal of the start switch 30 and the random number extraction command output from the fluctuation generator 1. The fluctuation generator 1 outputs a signal delayed by a delay T from the pressing signal of the start switch 30. A random number is extracted by this random number extraction command. If the extraction timing is different, the random numbers extracted by the random number extractor 3 are also different. Since the delay T is not a constant value and takes a different value every time the start lever 30 is pressed, it is more difficult to predict the extracted random number value. By providing the fluctuation generator 1 in this way, even if the random number generated by the random number generator 2 is not uniform and has a certain regularity and can be predicted, the random number used in the lottery is predicted. I can't do that. When the player operates the start switch 30 at a certain timing, the lottery probability cannot be set to a predetermined value or more.
[0045]
On the other hand, as shown in FIG. 6B, since the random number is conventionally extracted using the start lever pressing signal as it is, the random number generated by the random number generator 2 is not uniform and has a certain regularity. In some cases, the possibility of predicting random numbers used in the lottery could not be denied.
[0046]
On the other hand, according to the winning lottery means of FIG. 2, the start lever pressing signal is used in the meaning that the player himself performs a lottery in the lottery process, but when the random number is acquired by the fluctuation generator 1, the signal is further fluctuated. By having it, timing cannot be taken from outside the gaming machine. Therefore, fraud etc. become difficult.
[0047]
Next, the nature of the delay T generated in the fluctuation generator 1 will be described. The delay T takes a different value irregularly, that is, fluctuates. The fluctuation here means that the time from the reception of the pressing signal of the start switch 30 to the generation of a random number extraction command for the random number extractor 3 changes irregularly (difficult to predict) every time. Although it is desirable that the delays T be completely random and have a uniform distribution, in practice, the delays T may be generated at a constant rate. It doesn't have to be regular. Examples of the distribution of the delay T are shown in FIGS. These figures schematically show the delay time and its occurrence frequency.
[0048]
In the example shown in FIGS. 7A and 7A, the delay time has a uniform distribution within a certain range, and any delay time occurs within the predetermined range. Note that the range need not be limited as indicated by the dotted line. FIG. 4A shows a case where the delay time is 0 or more, and FIG. 4B shows a case where the delay time is distributed around a certain value (hereinafter the same).
[0049]
In the example of FIGS. 7B and 7B, the delay time occurs within a certain range, but the frequency of occurrence decreases linearly as the delay time increases.
[0050]
In the example of FIGS. 7C and 7C, the distribution has a peak at a predetermined delay time, and the frequency of occurrence gradually decreases around this. FIG. 5C 'shows a distribution similar to a so-called normal distribution.
[0051]
As a specific method for generating the delay T, a known algorithm (Monte Carlo method or the like) can be used, or a physical random number using thermal noise can be used. Although it is desirable that the delays T be completely random and have a uniform distribution, in practice, the delays T may be generated at a predetermined rate.
[0052]
Next, an outline of the operation of the slot machine having the above configuration will be described with reference to the flowcharts shown in FIGS.
[0053]
First, in step S1 shown in FIG. 8, when the start switch 30 is operated, the start switch 30 is turned on. Then, the process proceeds to the next step S2.
In step S2, lottery processing is performed by the winning lottery means shown in FIG. Then, the process proceeds to the next step S3.
[0054]
In step S3, the rotation of the rotary reel 40 is started. Then, the process proceeds to the next step S4.
In step S4, when the stop switch 50 is operated, the stop switch 50 is turned on. Then, the process proceeds to the next step S5.
In step S5, rotation stop processing for the rotary reel 40 is performed. Then, the process proceeds to the next step S6.
[0055]
In step S6, it is determined whether or not the operation of the stop switch 50 corresponding to the three rotary reels 40 has been performed. When it is determined that the operation of the stop switch 50 corresponding to the three rotary reels 40 has been performed, the process proceeds to the next step S7.
In step S7, it is determined 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. If it is determined that the winning is confirmed, the process proceeds to the next step S8.
[0056]
In step S8, medals corresponding to winning symbols are paid out. Then, the process proceeds to next Step S9.
In step S9, when a winning decision is made for a special game of the BB game or RB game, the number of winning decisions for the special game is incremented by one.
[0057]
The lottery process in step S2 described above will be described using the flow of FIG.
In step S10, a fluctuation is added to the start switch pressing signal by the fluctuation generator 1 of the winning lottery means. Then, the process proceeds to the next step S11.
In step S <b> 11, random numbers are extracted by the random number extractor 3 based on a signal to which fluctuation has been added from among the random numbers generated by the random number generator 2. Then, the process proceeds to next Step S12.
[0058]
In step S12, the extracted random number is stored in the random number extractor 3.
In step S12-2, the bits are exchanged for the specified set of the stored random number bits. Alternatively, shift by the specified number of bits in the specified direction. The example of FIGS. 3-5 shows the case where it shifted to 1 bit right. Other examples of bit replacement will be described in Embodiments 2 and 3.
[0059]
In step S12-3, the bit-changed random number is output. Then, the process proceeds to the next step S13.
In step S <b> 13, the determiner 4 compares the extracted random number with the winning determination area data in the winning determination table 5. Then, the process proceeds to the next step S14.
[0060]
In step S <b> 14, the determiner 4 determines which winning mode of the winning determination table 5 includes the extracted random number, and determines the evaluation of the lottery process. Then, the process proceeds to next Step S15.
In step S15, if the evaluation of the lottery process is out of place, for example, the predetermined symbols are set so as not to be aligned (so-called kicking), and if the win is determined, the stop switch is pressed at a predetermined timing. It is set so that the symbols are aligned (so-called pull-in). Then, the lottery process ends.
[0061]
In the first embodiment of the present invention, since the bits are exchanged between the random number extractor 3 and the determination unit 4 (CPU 8), the random number generator 2 regularly changes from 0 → 1 → 2 →. Even in this case, the random number generator 2 changes irregularly within the upper limit (within the maximum bit) generated. Therefore, it becomes difficult to aim from the outside. To change the bits, all you have to do is change the wiring and pattern. On the other hand, a random number circuit using a simple up (down) counter can aim at a specific numerical value from the outside by analyzing a clock cycle input to the counter.
[0062]
In the first embodiment of the present invention, it is very difficult to perform a shooting by using the bit replacement unit 6 together with the fluctuation generator 1 that gives fluctuation to the input signal from the outside. That is, according to Embodiment 1 of the invention, the start lever pressing signal is used in the sense that the player himself draws lots, but when the random number is acquired by the fluctuation generator 1, the signal is further fluctuated, Timing cannot be taken from outside the gaming machine. Therefore, it is difficult to deliberately aim for winning or cheating. Even if shifting by 1 bit is not sufficient, fraud can be effectively prevented by combining fluctuations.
[0063]
Embodiment 2 of the Invention
In the above example of bit replacement, the entire bit is shifted by 1 bit. Another bit replacement technique is bit replacement. Hereinafter, the replacement of bits will be described.
[0064]
Bit exchange is to exchange one or more sets of bits. The replacement of some of the plurality of bits constituting the random number will be specifically described based on the simulation result. The following example is for 8 bits. In the following description, the “change period” is the data change period received by the CPU when bits are exchanged, and the “change amplitude” is the data change width (change change). If the width is not constant, its maximum value). Specifically, please refer to FIG.
[0065]
(1) FIG. 11 shows a simulation result of replacing one set of bits. By appropriately selecting the combination of bits, the change amplitude can be set to 2 to 128, and the change period can be set to 2 to 32. Although not shown, the graph when one set of bits is exchanged is considered to be not very effective because it is linear to the right even when the amplitude is large. As will be described later, it is preferable that the change period is short and the change amplitude is large. If one set of bit swapping is evaluated from this point of view, this bit swapping includes less desirable bit swapping.
[0066]
(2) A simulation result of exchanging two or more sets of bits is shown in FIG. In this case, the change amplitude can be 32 or 128, and the change period can be 2. The graph when two or more sets of bits are exchanged has a large amplitude, and since the graph is quite different from the linear shape rising to the right before the bit exchange, an effect can be expected. From the viewpoint that it is preferable that the change period is short and the change amplitude is large, all of the bit exchanges shown in FIG. 12 are preferable. Therefore, it is preferable to exchange at least two sets of bits.
[0067]
In order to achieve the object of the present invention, the amplitude of the change must be large and the period of the change must be small. For this purpose, it is preferable to exchange the most significant bit and the least significant bit. In this way, it is considered that even if one set of bits is exchanged, an effect is obtained to some extent. This will be described with reference to FIG. FIG. 6A shows a lottery when a counter is used for the random number generator 2. When the contents of the winning determination table 5 are sequentially winning 1, winning 2, winning 3,..., Lost, the lottery opportunities are repeated in this order. The repetition period is determined by the frequency of the oscillator 7 and is usually constant. Once you have won and grabbed the timing, you can win again by pressing the start lever at intervals of an integral multiple of the repetition period (at least the probability of winning will be significantly higher than usual). FIG. 2B shows this state. The fraudster knows the repetition cycle in advance and presses the start lever at an integer multiple of the repetition cycle using a device that combines a timer and a solenoid.
[0068]
However, a certain amount of error occurs even if the fraudulent device is used. That is, as shown in FIG. 5C, an uncertain time that cannot be controlled even if the fraudulent device is used. For example, since the operation of the solenoid involves a mechanical error, the accuracy cannot be made smaller than about 10 ms.
[0069]
Therefore, it is desirable to perform bit replacement under the following policy.
(A) The change cycle is set to be equal to or less than the error of the device for fraud. In this way, the fraudulent device can not aim at a specific winning (specific contents of the winning determination table 5). For example, if the accuracy of the fraudulent device is 10 ms, a device having a shorter change period than this interval may be searched with reference to FIGS. The period of change is obtained from the oscillation frequency of the oscillator 7. As described above, winning and losing appear at intervals shorter than the limit that can be targeted by the fraudulent device after bit replacement. In order for the winning and losing to appear alternately, it is necessary to consider the following condition (b).
[0070]
(B) The amplitude of the change is set to such a magnitude that wins and loses are alternately arranged. In this way, it is not possible to aim for winning only, and the probability of losing is increased (0.5 or more). If the amplitude of change is small, for example, winning 2 is arranged next to winning 1, and even if winning 1 is missed, winning 2 may be obtained. For example, it is assumed that the address of the winning determination table 5 is 8 bits and that a loss is mapped to 128 to 255. In this case, if the amplitude of change is 128, winning and losing are arranged alternately. When the loss is mapped to 64 to 255, the change amplitude may be 64. When the loss is mapped to A% of the whole, the amplitude of the change may be (100−A)%.
[0071]
(C) Bit replacement that satisfies both the above conditions (a) and (b) is adopted.
When it is assumed that the address of the winning determination table 5 is 8 bits, the loss is mapped to 128 to 255, and the error of the fraudulent device corresponds to 4 of the change period, the bit 0 and the bit 7 in FIG. This corresponds to replacement, bit1 and bit7, and bit0 and bit7, bit1 and bit6, bit0 and bit7, bit1 and bit6, bit2 and bit5, bit3 and bit4 in FIG.
[0072]
If bits are exchanged as in the second embodiment of the present invention, it is difficult to aim from the outside. In addition, since winning and losing appear alternately at short intervals, the probability of winning can be reduced even if an illegal act is made.
[0073]
Embodiment 3 of the Invention
In the description of FIG. 3, it has been described that the bit replacement unit 6 is realized by a pattern of a wiring or a printed board. However, the bit replacement unit 6 may be realized as shown in FIGS. 15 to 17, for example. According to these examples, since the replacement pattern of the bit replacement unit 6 can be changed by an external signal, the replacement pattern may be changed as appropriate. An example of this is shown in FIG.
[0074]
FIG. 14 uses a start switch pressing signal as a bit replacement pattern change command signal, and attempts to change the bit replacement pattern each time the start switch is pressed. In this way, the random number input to the CPU 8 becomes more irregular and illegal acts become very difficult.
[0075]
In addition to the above, as a bit replacement pattern change command signal, a signal from a stop switch, a reel rotation start or stop signal, a time from a timer, a date or day signal, a big bonus (BB) winning notification signal, or the like is used. Can do.
[0076]
When changing the bit replacement pattern for each game, the lottery timing is preferable. Alternatively, when similar random numbers (numerical values within a certain range) are continuously generated, the bit replacement pattern may be changed when the number exceeds a predetermined number of times. For example, if the BB is won twice continuously or three times out of five times, the bit replacement pattern is changed.
[0077]
FIG. 15 shows an example in which a shift register is used for the bit replacement unit 6. FIG. 4A shows an outline of connection, and FIG. 4B shows a processing procedure. The input QA to QH data is shifted by the designated direction to the right or left, and output as D1 to D8. In the right shift, the rightmost bit data is input from the right shift output to the left right shift input. In the left shift, the leftmost bit data is input from the left shift output to the right shift input.
[0078]
It is the input in the shift direction and the clock (CLK) input that determines the bit replacement pattern. When changing the bit replacement pattern in FIG. 14, one or more pulses may be input to the clock in FIG. The shift direction at this time is arbitrary. However, in the example of FIG. 14, when eight pulses are input, the original state is restored. A clock pulse may be input every time the start switch is depressed. At this time, for example, if the BB is won twice consecutively or three times out of five times, the shift direction may be reversed.
[0079]
FIG. 16 shows an example in which a ROM (Read Only Memory) is used for the bit replacement unit 6. FIG. 2A shows an outline of connection. A0 to A9 indicate address input terminals. FIG. 4B shows an example of mapping of the ROM bit replacement pattern. When the random number is 8 bits, there is no bit shift from 0 to 255 as shown in the figure (data inputted as an address is output as it is), the first bit shift pattern from 256 to 511, and the second bit shift pattern from 512 to 767. , 768 to 1023 store the third bit shift pattern. The content of each bit shift pattern is arbitrary, and a pattern shifted by 1 to 7 bits to the right or left, or a pattern in which one set or two sets of bits are replaced can be stored.
[0080]
The bit replacement pattern is determined by signals at addresses A8 and A9 in FIG. In FIG. 14, when changing the bit replacement pattern, the signals of the addresses A8 and A9 may be changed. For example, a counter that operates in response to a start switch pressing signal may be provided, and the output of this counter may be input to addresses A8 and A9.
[0081]
FIG. 17 shows an example in which a multiplexer is used for the bit replacement unit 6. For example, 8 multiplexers that select 1 bit from 8 bits are used. Since each multiplexer selects one of the three-bit control signals, the multiplexer control signal is generated so as to obtain a desired bit replacement pattern. For example, when 000 is input as a control signal, QH is connected to D8, and when 001 is input, QG is connected to D8 (the same applies hereinafter).
[0082]
According to the third embodiment of the present invention, the bit replacement pattern can be appropriately changed by configuring the bit replacement unit 6 with, for example, a shift register, a ROM, and a multiplexer. For example, a start switch pressing signal, a signal from a stop switch, a reel rotation start or stop signal, a time from a timer, a date or day signal, a winning notification signal such as a big bonus (BB), or the like can be used. By appropriately changing the bit replacement pattern, the random numbers used in the lottery become more irregular and the illegal act becomes very difficult, so that the illegal act can be effectively prevented.
[0083]
In the above description, bit replacement is performed using hardware, but bit replacement may be performed using software.
[0084]
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.
[0085]
【The invention's effect】
As described above, according to the present invention, the random numbers used in the lottery are irregular by changing the random numbers generated by exchanging bits, so that illegal acts are difficult. It can prevent cheating.
[Brief description of the drawings]
FIG. 1 is a front view of a gaming machine (slot machine).
FIG. 2 is a block diagram of winning lottery means for the gaming machine according to the first embodiment of the present invention.
FIG. 3 shows an example in which the winning lottery means according to the first embodiment of the present invention is realized by hardware.
FIG. 4 is an explanatory diagram of bit replacement according to the first embodiment of the invention.
FIG. 5 is an explanatory diagram of bit replacement according to the first embodiment of the invention.
FIG. 6 (a) is a timing chart showing the relationship between a start switch pressing signal and a random number extraction instruction output by a fluctuation generator according to an embodiment of the invention, and FIG. 6 (b) is a conventional timing diagram; It is a chart.
FIG. 7 is a graph showing an example of a distribution of delay T by a fluctuation generator according to an embodiment of the invention.
FIG. 8 is a flowchart showing an outline of the operation of the gaming machine.
FIG. 9 is a flowchart showing a lottery process according to the embodiment of the invention.
FIG. 10 is an explanatory diagram of bit replacement according to the second embodiment of the present invention.
FIG. 11 is a diagram showing a bit replacement pattern (one set of bit replacement) according to the second embodiment of the present invention;
FIG. 12 is a diagram showing a bit replacement pattern (2 sets and 4 sets of bit replacement) according to Embodiment 2 of the present invention;
FIG. 13 is an explanatory diagram of bit replacement according to the second embodiment of the invention.
FIG. 14 is a block diagram of winning lottery means for a gaming machine according to Embodiment 3 of the present invention;
FIG. 15 is an example (shift register) of a bit replacement unit according to the third embodiment of the present invention;
FIG. 16 is an example (ROM) of a bit replacement unit according to the third embodiment of the present invention;
FIG. 17 is an example (multiplexer) of a bit replacement unit according to the third embodiment of the present invention;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fluctuation generator 2 Random number generator 3 Random number extractor 4 Judgment part 5 Winning judgment table 6 Bit replacement part 7 Oscillator 8 CPU
DESCRIPTION OF SYMBOLS 10 Slot machine 11 Case 12 Display window 13 Symbol display window 16 Bet switch 17 Settlement switch 30 Start switch 40 Rotating reel 42 Reel tape 50 Stop switch 60 Reel unit 61 Symbol 62 Liquid crystal display part 100 Medal insertion slot 304 Medal payout slot 311 Medal Receiving part (lower plate)

Claims (19)

In a gaming machine comprising a winning lottery means for performing a lottery based on a signal of a predetermined switch and making a winning determination based on the lottery result,
The winning lottery means includes a random number generator for generating a random number for winning lottery, a fluctuation generator for receiving a signal from the switch, adding a fluctuation to the signal, and outputting the fluctuation, and a random number generated by the random number generator. A random number extractor that extracts based on the output of the fluctuation generator, a bit replacement unit that performs bit replacement on the extracted random number, a winning determination table that stores in advance a correspondence between a numerical value related to a lottery and a winning, and the winning determination table And a determination unit that determines at least one of the presence / absence of a winning or the type of winning based on the output of the bit replacement unit with reference to FIG. In a gaming machine comprising a winning lottery means for performing a lottery based on a signal of a predetermined switch and making a winning determination based on the lottery result,
The winning lottery means performs a bit replacement on the extracted random number, a random number generator that generates a random number for winning lottery, a random number extractor that extracts a random number generated by the random number generator based on the signal of the switch A bit replacement unit, a winning determination table that preliminarily stores a correspondence between a numerical value related to a lottery and a winning, and at least one of the presence / absence of a winning or the type of winning based on the output of the bit replacing unit while referring to the winning determination table And a determination unit for determining
A gaming machine, wherein at least two sets of bits are exchanged in the bit exchange unit. In a gaming machine comprising a winning lottery means for performing a lottery based on a signal of a predetermined switch and making a winning determination based on the lottery result,
The winning lottery means performs a bit replacement on the extracted random number, a random number generator that generates a random number for winning lottery, a random number extractor that extracts a random number generated by the random number generator based on the signal of the switch A bit replacement unit, a winning determination table that preliminarily stores a correspondence between a numerical value related to a lottery and a winning, and at least one of the presence / absence of a winning or the type of winning based on the output of the bit replacing unit while referring to the winning determination table And a determination unit for determining
In the bit replacement section, the output change cycle is about the same as or less than the error of the fraudulent device, and the change amplitude is the same in the winning determination table as the correspondence relationship between winning and losing. A gaming machine characterized in that bit exchange is performed that satisfies both conditions of being a size that can be alternately arranged. 4. The gaming machine according to claim 2, wherein at least the most significant bit and the least significant bit are exchanged in the bit exchange unit. In a gaming machine comprising a winning lottery means for performing a lottery based on a signal of a predetermined switch and making a winning determination based on the lottery result,
The winning lottery means performs a bit replacement on the extracted random number, a random number generator that generates a random number for winning lottery, a random number extractor that extracts a random number generated by the random number generator based on the signal of the switch A bit replacement unit, a winning determination table that preliminarily stores a correspondence between a numerical value related to a lottery and a winning, and at least one of the presence / absence of a winning or the type of winning based on the output of the bit replacing unit while referring to the winning determination table And a determination unit for determining
In the bit replacement unit, the bit replacement state is changed at a predetermined opportunity. The bit change based on at least one of a signal from a start lever, a signal from a stop switch, a reel rotation start signal, a reel rotation stop signal, a time signal, a date signal, a day signal, and a winning notification signal 6. The gaming machine according to claim 5, wherein a replacement state of the bits of the part is changed. 6. The gaming machine according to claim 5, wherein a bit replacement state of the bit replacement unit is changed when random numbers are continuously generated within a predetermined range. 6. The gaming machine according to claim 5, wherein when a random number is generated exceeding a predetermined number of times in a predetermined range, the bit replacement state of the bit replacement unit is changed. The gaming machine according to any one of claims 1 to 8, wherein the bit replacement unit includes a shift register and receives a command signal and a clock signal in a shift direction to perform bit replacement. The bit replacement unit includes a memory, and a plurality of bit replacement patterns are stored in the memory in advance, and at least a part of the address signal is received and one of the plurality of bit replacement patterns is selected to perform bit replacement. A gaming machine according to any one of claims 1 to 8. The gaming machine according to claim 1, wherein the bit replacement unit includes a multiplexer and performs bit replacement in response to a control signal in a replacement state. A fluctuation generator that receives the signal of the switch and adds the fluctuation to the signal and outputs the fluctuation, and the random number extractor extracts a random number generated by the random number generator based on the output of the fluctuation generator. A gaming machine according to any one of claims 2 to 11. The gaming machine according to claim 1 or 12, wherein the fluctuation generator irregularly varies the time from reception of the signal related to the lottery to its output every time. A method of performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging bits for the extracted random number;
A fourth step of determining at least one of the winning type and the winning type of the random number in which the bits are replaced in the third step with reference to a winning determination table prepared in advance,
In the third step, at least two sets of bits are exchanged, and the winning determination method for a gaming machine is characterized in that: A method of performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging bits for the extracted random number;
A fourth step of determining at least one of the winning type and the winning type of the random number in which the bits are replaced in the third step with reference to a winning determination table prepared in advance,
In the third step, the cycle of the output change due to the bit replacement is about the same as or less than the error of the fraudulent device, and the amplitude of the change is that the correspondence relationship in the winning determination table is a winning. A winning determination method for a gaming machine characterized by satisfying both conditions that the size is such that the losers are alternately arranged. A method of performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging bits for the extracted random number;
A fourth step of determining at least one of the winning type and the winning type of the random number in which the bits are replaced in the third step with reference to a winning determination table prepared in advance,
In the third step, a winning change determination method for a gaming machine, wherein a bit replacement state is changed at a predetermined opportunity. A program for causing a computer to execute a method of performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging at least two sets of bits for the extracted random number;
A program for causing a computer to execute a fourth step of determining at least one of a winning type and a winning type of a random number whose bits are replaced in the third step with reference to a winning determination table prepared in advance. A program for causing a computer to execute a method of performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging bits for the extracted random number;
A computer for executing a fourth step for determining at least one of a winning type and a winning type of a random number in which bits are replaced in the third step with reference to a winning determination table prepared in advance;
In the third step, the cycle of the output change due to the bit replacement is about the same as or less than the error of the fraudulent device, and the amplitude of the change is that the correspondence relationship in the winning determination table is a winning. A program characterized by satisfying both conditions that the size is such that the loses are alternately arranged. A program for causing a computer to execute a method of performing a lottery based on a signal of a predetermined switch and performing a winning determination based on the lottery result,
A first step of generating a random number;
A second step of extracting a specific random number from a plurality of random numbers generated in the first step based on the signal of the switch;
A third step of exchanging bits for the extracted random number;
A computer for executing a fourth step for determining at least one of a winning type and a winning type of a random number in which bits are replaced in the third step with reference to a winning determination table prepared in advance;
In the third step, the bit change state is changed at a predetermined opportunity.

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