JPH07114843B2 - Pachinko machine - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a pachinko machine that further improves game playability by giving randomness by generating random numbers.

[Prior art]

Some recent pachinko machines use a computer in order to electronically control the winning probability of a ball. In such a pachinko machine, in order to determine the hit mode, an event that depends on chance is caused, the hit mode is determined from this event, and the development of a more complicated game is controlled in accordance with the hit mode. ing. Then, in order to cause an event that depends on chance, for example, a random number table is used, and the random number table is rotated to relate to the address of the random number table when winning or the address of the random number table when the stop switch is pressed. There is a method of determining the winning mode in accordance with the 3-digit random number generated.

[Problems to be Solved by the Invention]

The conventional method for generating random numbers is to generate a random number by rotating a random number table of 250 ways for two-digit numerical values of the hundreds digit and the ones digit, and generate a numerical value of the tens digit for each rotation. This is a method of updating one by one and generating a 3-digit random number. Therefore, 2500 kinds of random numbers are generated and the generation speed is every 1 ms, so the time required for one rotation of the 3-digit random number is 2.
It is 5 seconds. On the other hand, if the stop switch is not operated, the random number that determines the winning mode is determined by the random number generated when the specific winning opening is won. However, the winning of the specific winning opening is detected every 3 ms, which is different from the timing of rotating the random number table. sell. In other words, the random number generation speed is 1 ms, but since the random number generation timing and the winning detection timing are not synchronized, the actual random number generation speed is 3 ms.
, And one cycle of random number generation is 7.5 seconds. However, the random numbers that are hits in the random number table are assigned to appropriate positions at a fixed rate so that the hit probability has a predetermined value. That is, the hit probability changes according to a predetermined characteristic within a period of one cycle of the random number table under the intention of the designer, and the average hit probability during one rotation of the random number table becomes a predetermined regulation value. It is set.
Therefore, when the rotation cycle of the random number table becomes long, the effect of averaging the hit probability weakens, and there is a problem that the hit probability largely depends on the hit distribution of one cycle of the random number table. Further, since random numbers that can be generated at the time of winning are scattered in the random number table, there is a problem that the characteristic of the hit probability with respect to time in one cycle is different from the designer's intention. In addition, since the timing of generating the random number table and the timing of winning detection are not always exactly tripled as described above, it is possible that the random numbers that can be generated at the time of winning can be generated evenly from the repeated random number table. However, there is a problem that the generated random numbers are biased in a long period. In particular, if the winning detection timing is 2 ms, only random numbers at odd addresses or even addresses in the random number table can be generated, and the generated random numbers have an infinite period bias. The present invention has been made in order to solve the above problems, and an object of the present invention is to generate a random number that can be generated at the time of winning according to the design intention of the random number table, so that the winning probability is 1 The time distribution of the cycle and the long-term average probability are set as the predetermined characteristics as designed.

[Means for solving problems]

In order to solve the above problems, the configuration of the invention is to generate a random number according to the winning of the ball to the specific winning opening, determine the winning mode according to the generated random number, and the winning opening according to the mode. In a pachinko machine for controlling the winning probability of a ball to, a timing signal output means for outputting a timing signal, a storage means for storing a random number table, and an address update for updating the address of the random number table in synchronization with the timing signal. Means, a winning detection means for detecting the winning of a ball of a specific winning opening in synchronization with the timing signal, and the address updated by the address updating means when a winning is detected by the winning detection means. It is characterized in that it is provided with a random number generating means for making the numerical values of the random number table random numbers to be generated.

[Action]

Since the update timing of the address of the random number table and the timing of winning detection are synchronized, the distribution of random numbers that can occur during winning is the same as the distribution of random numbers in the random number table. Therefore, the temporal distribution of the hit probability in the short cycle (one rotation cycle) of the random number table is determined by the arrangement state of the random numbers on the random number table, and the long cycle hit probability is determined by the number of hit random numbers in the random number table. Therefore, both the short period probability and the long period probability are as intended by the designer of the random number table.

【Example】

Hereinafter, the present invention will be described based on specific examples. FIG. 2 is an external view showing the mechanism of the pachinko machine. Play board
51 has various winning openings, of which 52, 53,
54 is a specific winning opening, and the winning mode is determined when the specific winning opening is won. 63 is a special winning opening that is opened / closed in accordance with the winning mode, and an opening / closing door 64 is opened / closed by a solenoid 41 provided inside.
Further, a V winning opening 63 is provided at the center of the big winning opening, and when the winning opening is won, the opening / closing door 64 continuously generates the right to open and close. At the center of the game board 51, a numerical display 27 is provided which displays a state of a combination of chances when a ball has won a specific winning opening 52, 53, 54. The numerical display 27 is a three-digit LED display, and when a specific winning opening is won, the displayed three-digit numerical value fluctuates, and the player presses the stop switch 20 within a predetermined time after winning. When the time has passed, the random number confirmed under the predetermined condition is displayed. Then, the winning mode is determined from the displayed random number, and the special winning opening 63 is selected according to the mode.
The opening time of the open / close door 64 is controlled. Further, the play board 51 is provided with various indicators and lamps for displaying the operating state. Reference numeral 30 in the center is a memory number display for displaying the number of balls which have won a specific winning opening and are pending processing. 47a to 47j is an operation lamp that blinks at the time of combination operation for determining the mode. 43a to 43c are panic lamps that blink together with the lamps 47a to 47j when the jackpot is hit. Further, 45a to 45c are V lamps which blink when there is a winning in the V winning opening 63. FIG. 1 is a block diagram showing the electrical configuration of the apparatus of this embodiment. A microcomputer 1 is used as the control device. The microcomputer 1
An external ROM3 and an external RAM8 are connected to. And ROM3
The random number table 31 shown in FIG.
M8 stores the address of the random number table that is updated every moment and the address of the random number table at the time of winning and the address of the random number table at the time of winning, corresponding to the C-th winning ball, and pressing the stop switch 20 at the address at the time of winning. A fixed memory M (C) 82 for storing an address corrected only by the address of the random number table at the time of making, and a tenth random number memory 83 for storing the tenth digit of the generated random number. A random number memory 84 for storing a fixed random number for determining the winning mode from the address stored in the memory M (C) 82 is formed. Also, a winning detection switch 7 for detecting a winning ball at a specific winning opening, a large winning opening winning detection switch 9 for detecting a winning ball at a large winning opening, a V winning detection switch 11 for detecting a winning ball at a V winning opening, and a stop switch. The reference numeral 20 is connected to the microcomputer 1 through a waveform shaping circuit 13 formed of a flip-flop for preventing chattering. The clock generation circuit 17 also outputs an external interrupt signal to the INT terminal of the microcomputer 1 via the frequency divider 15. Then, the microcomputer 1 executes the main program shown in FIG. 4 in synchronization with the external interrupt signal. Further, the timing signal output from the timing signal generation circuit 18 is input to the RST1 terminal of the microcomputer 1, and the winning detection, stop switch detection and random number generation programs shown in FIG. 5 are started in synchronization with the timing signal. To be done. An element 180 that determines the cycle of the timing signal output to the timing signal generation circuit 18 is connected to the oscillation circuit. The element 180 is composed of a resistance element having temperature dependency, and the cycle of the timing signal output from the timing signal generation circuit 18 changes according to the temperature change of the environment. Further, 21 is a power supply circuit, the signal of the start switch 23 is input to the reset signal generation circuit 19, and the reset signal which is its output signal is input to the RST2 terminal of the microcomputer 1, and the reset signal causes the third signal to be output. The initial program shown in the figure is started. Further, a display drive circuit 25, a display selection circuit 28, and a driver 39 are connected to each output port of the microcomputer 1, and the above-mentioned numerical display is provided to the display drive circuit 25 and the display selection circuit 28. 27, lamp display 29, memory number display
30 is connected. Further, the driver 39 drives the solenoid 41 in response to the signal from the microcomputer 1, and the panic lamp 43, V
The lighting operation of the lamp 45 and the operation lamp 47 is controlled. Next, the operation of the pachinko machine having such a configuration will be described based on a flowchart showing a processing procedure of the microcomputer 1. (1) Initial setting when power is turned on When the start switch 23 is turned on, the microcomputer 1
To the RST2 terminal, and the CPU1 executes the program shown in FIG. That is, 3 displayed on the numerical display 27
The digit number registers X1, X2, X3 are set to initial values, and the display lamp register L storing the lighting lamps of the lamp display 29 is set to initial values. In addition, a winning ball counter C that counts the number of winning balls that have been won and held in a specific winning port is set to zero, and a large winning hole winning count G that counts the number of winning balls to the special winning port is set to zero, V The V winning ball counter A, which stores the presence / absence of winning balls in the winning opening, is initially set to zero. or,
The state register F storing the control state is initialized to zero, the hit mode register R storing the hit mode is initialized to zero, and the timers T1, T2, T3 are initialized to zero. Then, the random number confirmation flag B that is set when the random number that determines the winning mode is reset to 0, the value of the tenth random number memory 84 is set to 1, and the hundredth digit and the first digit of the random number are set. An address I of the random number table for determining a digit from the random number table is set to 1 which is an initial value. (2) Background processing Each time the external interrupt signal output from the frequency divider 15 after initial setting is input, the CPU 1 executes the program shown in FIG. In step 100, the timer is updated, and in step 102, the status signals S2 and S3 of the switches 9 and 11 except the winning detection switch 7 and the stop switch 20 are read. These status signals are composed of negative logic and indicate that the switch is in the ON state and the winning ball is detected when the signal is at the low level. Therefore, the trailing edge of each state signal is detected in steps 104 and 108, and when the trailing edge is detected, the counter G is updated and the counter A is set to 1. The following steps 112 to 166 are processing steps corresponding to each state. In parallel with the processing of the main program, the winning detection, stop switch detection and random number generation program shown in FIG. 5 is started in synchronization with the timing signal input from the RST1 terminal in a shorter cycle than its execution cycle. It That is, in step 200, the status signal S1 of the winning detection switch 7
Is input and it is determined in the next step 202 whether or not the signal S1 has fallen. If the signal S1 has fallen, it proceeds to step 204 and it is determined whether or not the winning ball count C is less than 4. If less than 4, step 206
The prize-winning ball counter C is updated by 1. And
In the next step 208, the address of the random number table stored in the address memory 81 is stored in the fixed memory M (C) 83. That is, even when the winnings are consecutively won, the address of the random number table at each winning is respectively determined memory M (C) 83.
Will be stored in. The determination in step 204 is for holding up to four winning balls. The following steps 210 to 222 are for updating the address of the random number table.
In step 210, the value of the address I is read from the address memory 81, and in the next step 212, it is judged whether or not the value of the address I is the final value. If it is not the final value, the step 21
At 4 the address I is updated by 1 and the value is stored in the address memory 81. If the value of the address I is determined to be the final value in step 212, the process proceeds to step 218 and the address I is set to the initial value 1, and the value is stored in the address memory 81 in the next step 220. To be done. Then, in the next step 222, the value of the tenth random number memory 83 is updated. Next, the process proceeds to step 224, the status signal S4 of the stop switch 20 is input, and in the next step 226, it is determined whether or not the signal S4 has fallen. When the signal falls, the process proceeds to step 228 and the value stored in the address memory 81 and the value stored in the fixed memory M (1) 82 are added and the value is set to the fixed memory M (1). It is stored in 82. That is, the address of the random number table when the stop switch 20 is pressed is added to the address of the random number table when the re-first winning ball is won. Then, in step 230, it is judged whether or not the address stored in the definite memory M (1) 82 is larger than the final value.
Then, the final value is subtracted from the address stored in the definite memory M (1) 82, and the value is stored in the definite memory M (1) 82. That is, when the final address of the random number table is exceeded by the addition processing in step 228, it is offset to the address in the random number table. In this way, when the address of the random number table when the stop switch 20 is pressed within a predetermined time after winning is confirmed, the process proceeds to step 234 and corresponds to the address stored in the confirmed memory M (1). The 100th and 1st place random numbers are read from the random number table, a 3-digit random number is generated together with the value of the 10th place random number memory 83, and the confirmed random number is stored in the random number memory 84. Then, in order to store that the random number has been confirmed in step 236, the random number confirmation flag B is set to 1. Further, when the fall of the signal output from the stop switch 20 is not detected in step 226, the process proceeds to step 238, and it is determined whether or not the time-out of the timer T1 set at the time of winning in step 124 of the main program described later is set. Is determined. If the time is not up, that is, if the fixed time has not elapsed after winning, the program ends, but if the time is up, the process proceeds to step 234, and is fixed in the random number memory 84 as described above. Random numbers are stored. In the case of time-up, the random number will be fixed at the address of the random number table at the time of winning. (3) Processing when there is no winning ball When the winning ball does not exist, that is, when the counter C is 0, the processing of steps 100 to 118,170 is performed, whereby the numerical display, lamp display, Each lamp group performs a predetermined display. (4) When there is a winning ball (C ≠ 0) (a) Combination operation processing In step 118, the value of the counter C is determined, and when a winning is detected, the value of the counter C is decremented by 1 to determine the combination operation state. To indicate, the register F is set to 1, the timer T1 is set to a predetermined value, and the random number confirmation flag B is reset to 0 (steps 118 to 124). Next, at step 126, the random number confirmation flag B
Is set to 1, that is, it is determined whether the random number has been determined. If it is determined that the random number has not been determined, the process proceeds to step 170. Then, steps 100 to 112, 126 and 170 are repeated until the random number is confirmed. On the other hand, if it is determined in step 126 that the random number has been determined, the determined random number is stored in the random number memory 84, so the process moves to step 128 and the winning mode is determined from the value in the random number memory 84. , The mode is set in the hit mode register R. Then, since the winning mode has been determined for the first winning ball, the process proceeds to step 129, and the value of the determined memory 82 is set in the numerical display registers X1, X2, X3 and fixed in the numerical display 27. The random number you selected is displayed. Then, in the next step 130, the fixed memory M
(C) Each value stored in 82 is updated so that the value in the one-address advance determination memory M (1) becomes the address of the random number table for the next re-winning prize ball. The values set in the hit mode register R are 0, 1 is a small hit, 2 is a medium hit, and 3 is a big hit. When the player is out of position, the register F is set to 0, and the process goes to the next winning ball determination cycle. (B) Processing when hitting When the judgment result in step 132 is hitting, the time is set in the timer T2 in step 138 according to the hitting mode. Then, the background processing described above is performed until the timer T2 is determined to have timed out in step 140. As a result, the special winning opening is opened for a predetermined time, and the lamp group is displayed as a panic state. At this time, if it is determined in step 142 that the number of winning balls to the special winning opening is 10, the process similar to the time-up is performed even before the time-up. That is, the counter G is set to 0 in step 144. (C) Processing when V winning ball is present When the V winning ball is present when the special winning opening is open, that is,
When the counter A is 1 (step 154), the value of the register F is set to 3 in step 156 to indicate the generation of the continuing right. Then, in step 158, the timer T3 is set to a predetermined time, and in step 160 it is determined whether the time is up. This process is to give a certain delay until the special winning opening is subsequently opened. After this, in step 162, the register R is set to the value 3 indicating the big hit, and in step 13
Move to 6 and perform the above-mentioned hitting process. However,
Step 146 so that the continuation right does not occur more than 10 times.
Is being adjusted. The numerical display 27 of the above embodiment displays the generated random numbers themselves, but it may display a combination of symbols and the like corresponding to the random numbers. Further, it may be constituted by a rotating drum or the like. Although the above embodiment has been described with reference to a pachinko machine, it can also be used for a gaming machine such as a throttle machine that causes other chances. In the case of a throttle machine, the start timing of the device is the winning detection timing of the pachinko machine.

【The invention's effect】

According to the present invention, the update timing of the random number table and the winning detection timing, which is the determination timing of the random number that determines the winning mode, are synchronized, so that the time distribution of one cycle of the winning probability and the long-term average winning probability are designed. It is possible to accurately control the number of random numbers per random number table and the ratio of the number of random numbers per random number to all random numbers. Therefore, it is possible to eliminate the phenomenon that the hit probability is biased unexpectedly in terms of time.

[Brief description of drawings]

FIG. 1 is a block diagram showing the electrical configuration of a pachinko machine according to a specific embodiment of the present invention, and FIG. 2 is a plan view showing the appearance of the pachinko machine of the same embodiment, FIG. 3, and FIG. 4 and 5 are flowcharts showing the processing procedure of the microcomputer used in the pachinko machine of the embodiment, and FIG. 6 is an explanatory diagram showing an example of a random number table. 27 …… Numerical indicator, 29 …… Lamp indicator 30 …… Memory number indicator, 31 …… Random number table 43a ～ 43c …… Panic lamp 45a ～ 45c …… V lamp 47a ～ 47j …… Operating lamp, 50… … Frame 51… Play board, 52,53,54 …… Specific winning opening 63 …… Large winning opening, 64 …… Opening / closing door 65 …… V winning opening, 81 …… Address memory 82 …… Set memory, 83 …… Tenth random number memory 84 …… Random number memory

Claims (1)

[Claims] 1. A random number is generated according to a winning of a ball to a specific winning opening, a winning mode is determined according to the generated random number, and a winning probability of the ball to the winning opening is controlled according to the mode. In the pachinko machine, timing signal output means for outputting a timing signal, storage means for storing a random number table, address updating means for updating the address of the random number table in synchronization with the timing signal, and synchronization for the timing signal. A winning detection means for detecting the winning of a ball of a specific winning opening, and a random number for generating a numerical value of a random number table associated with the address updated by the address updating means when a winning is detected by the winning detection means. A pachinko machine characterized in that it is provided with a random number generating means.