JPH11347227A - Pachinko game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent unfair big winning by storing a random number obtained with an output signal during normal operation as an opportunity in a reloadable semiconductor memory capable of holding storage content even when an external power supply is cut, and reading the same as an initial value of a random number obtained when a big winning occurs. SOLUTION: A random number is stored in an EERROM 24 taking the opportunity of outputting one of various output signals generated during the operation of a pachinko game machine. The EEPROM 24 is capable of holding the storage content even when an external power supply is cut, and formed by a reloadable semiconductor memory. When the power is applied to the machine to be started, a random number stored in the EEPROM 24 is always read as an initial value of a random number obtained by a big winning generating means. Thus, a non-specific value stored in the EEPROM 24 becomes an initial value, so that a big winning can be not generated with high probability so as to prevent an unfair winning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pachinko game machine configured to obtain a large number of prize balls at a time by generating a jackpot, and more particularly, to prevent a jackpot from being illegally generated. Is to do so.

[0002]

2. Description of the Related Art A conventional so-called first-type pachinko game machine generally called a "fever machine" is provided with a clock signal transmitted from a pulse generator to an electronic control circuit board provided in a board case on the back of the game board. CP operated by
A microcomputer including a U, a RAM, a ROM, and the like is configured, and the electronic control circuit board includes an electronic display such as a color liquid crystal display and a CRT provided on a game board, a segment display, an illumination lamp, and light emission. A display device such as a diode is display-controlled in accordance with the clock signal, the clock signal is counted by a counter, and a count value of the counter when a hit ball wins a predetermined winning opening is obtained as a random number. It is configured to generate a jackpot when the set number is reached. FIG. 7 is a time chart showing the change over time of the count value of this counter. When the jackpot occurrence probability is set to 1/256, the minimum value of the count value is 0, the maximum value is 255, and 0 to 0. Any one of 255 is the random number acquired by the jackpot generating means.

[0003] When a big hit occurs, "777" or the like is displayed on the electronic display, an electric opening / closing large winning opening is opened, and one hit ball is hit at the large winning opening.
Although the special winning opening closes once when 0 or 30 seconds have elapsed, the special winning opening is closed by a hit ball being placed in a continuous winning opening called a V zone provided in the special winning opening. Is also opened continuously up to about 16 times. For this reason, it is configured such that a large amount of prize balls can be acquired by hitting the ball during the jackpot period, and a lot of profits are brought to the player.

[0004]

Therefore, in this type of pachinko game machine, in a model with a low clock frequency, the player measures the display timing of the display device such as the light emitting diode, and then calculates the count value of the jackpot of the counter. By estimating and matching the timing at which the hit ball is won to the winning opening with the count value, there is a possibility that a big hit can be generated with high probability, and therefore, a special hitting method that matches the timing with the clock signal is used. There was a problem that only the players could get big profits.

In order to make the jackpot easy or difficult to hit, a remodeling electronic circuit is mounted near the substrate case on the back of the pachinko game machine, and a clock signal is transmitted from a signal line for controlling display of the display device to the electronic device. Normal board cases that are generally prohibited, such as taking in the circuit and returning the jackpot signal to the electronic control circuit board in the board case in accordance with the timing of the clock signal, or always returning the non-jackpot signal, are taken. There has been a frequent crime of playing illegal games very easily without replacing the board case with an illegally modified one.

Accordingly, an object of the present invention is to prevent the occurrence of a jackpot from being illegally controlled by utilizing such a display of a display device or a clock signal for controlling the display.

[0007]

For this purpose, the present invention relates to a pachinko gaming machine provided with a jackpot generating means for generating a jackpot with a predetermined probability by a random number obtained when a hit ball wins a predetermined winning opening, When a semiconductor memory capable of retaining stored contents and being rewritable even when the external power supply is cut off is provided, and any one of various output signals generated during operation of the pachinko gaming machine is output. Is stored in a semiconductor memory, and the random number stored in the semiconductor memory is read as an initial value of the random number obtained by the jackpot generating means. Further, the present invention is characterized in that, in the pachinko gaming machine, a random number is stored in a semiconductor memory when the power of the pachinko gaming machine is turned off. Further, according to the present invention, in the pachinko gaming machine, an output signal generated when a hit ball enters or passes through a predetermined winning opening or passing gate among a plurality of various winning openings or passing gates provided on the gaming board is It is characterized in that a random number is stored in a semiconductor memory upon output.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the front of the pachinko gaming machine. In the figure, 1 is an upper plate for receiving a prize ball, 2 is a lower plate, 3 is a hitting / launching handle, 4 is a gaming board, 5 is a front frame, and 6 is the gaming board. , A light emitting diode for illumination provided in, 7 is a passage gate,
8 is a liquid crystal display electronic display, 9 is a normal winning opening,
Reference numeral 10 denotes a start winning port, in which a start switch 11 is provided. Reference numeral 12 denotes a rectangular large winning opening, and an opening / closing door 13 has a solenoid 14 at the large winning opening 12.
It is pivotally supported so that it can be opened and closed forward by the operation of (FIG. 3).

A board case 15 is provided on the back side of the game board 4 as shown in FIG. 2, and an electronic control circuit board 16 is provided in the board case. The electronic control circuit board 16 includes a microcomputer including a CPU, a RAM, a ROM, and the like, which are operated by a clock signal transmitted from a pulse generator. Then, a signal line 17 is led from the electronic control circuit board 16 to the light emitting diode 6 and the like, and a signal line 18 is led to the electronic display 8. Reference numeral 19 denotes a signal line connected from the electronic control circuit board 16 to the start switch 11, the solenoid 14, and the like.

FIG. 3 is a block diagram showing a main part of the electronic control circuit.
22 and a pulse generator 23, and an EEPROM 24 which is one of rewritable semiconductor memories capable of retaining stored contents even when the external power supply is cut off. Reference numeral 25 denotes an input / output circuit for connecting the electronic display 8, the start switch 11, the solenoid 14, and the like.

In this electronic control circuit, a random number obtained when any one of various output signals generated during operation of the pachinko game machine is output is stored in the EEPROM 24, When the pachinko gaming machine is powered on and started, the random number stored in the EEPROM is always read as the initial value of the random number obtained by the jackpot generating means. That is, for example, when an output signal generated when a hit ball enters or passes through a predetermined winning opening or a passing gate such as a normal winning opening 9 or a passing gate 7 provided on a game board is output, Alternatively, when a jackpot occurs, the random number acquired at such a trigger is stored in the EEPROM 24 as shown in FIG. For example, in FIG. 4, the random number 100 of the trigger A is stored in the EEPROM 24, and this value does not disappear even if the pachinko game machine is turned off after the business hours of the pachinko game hall are over. Then, when the pachinko game machine is turned on and started, the random number 100 stored in the EEPROM is read as the initial value of the random number acquired by the jackpot generating means as shown in FIG.

The random number may be stored in the EEPROM 24 when the power of the pachinko gaming machine is turned off. This is to create a circuit in which the power supply of the DC power supply to the electronic control circuit is shut off slightly later than the power supply to other AC power supply parts when the power supply of the pachinko game machine is cut off. Can be written with random numbers.

FIG. 6 is a flowchart showing the operation of the electronic control circuit. After the power is turned on, the work area clearing process is performed in steps a and b, and then the EE is performed in step c.
The random number stored in the PROM 24 is read, and in step d, the random number is set as the initial value of the random number by the jackpot generating means. Thereafter, steps e and f are repeated to enter a normal game state. When the power of the pachinko gaming machine is turned off in steps g, h, and i, the random number at that time is stored in the EEPROM 2 upon some output.
4 is stored.

As described above, in the pachinko gaming machine of the present invention, the initial value of the random number
Since the value becomes an unspecified value recorded in the ROM, it is not always possible to generate a big hit with a high probability even if the hit ball is made to enter the winning opening in accordance with the display timing of the display device such as the light emitting diode 6. . That is, since the relationship between the display variation such as blinking of each display device and the random number can be eliminated, even if the hit ball is made to win in the winning opening 12 at the timing of the display variation, the big hit is thereby achieved. The probability of occurrence does not increase.

Also, even if the signal line 17, the signal line 18 and the like wired to each display device are branched from the electronic control circuit board 16 and a remodeling electronic circuit is set up, the initial value of the random number is an unspecified value. Therefore, it is impossible to carry out unauthorized modification that can change the probability of occurrence of a jackpot using these signal lines.

In this embodiment, a description has been given of a case where a counter is incremented by a clock signal to generate a random number, but a random number obtained from a random number generator which transmits an unspecified numerical value at random is used. Even if the random number is generated, the same numerical value is only repeatedly output at a constant cycle, and the random number has a periodicity such as a periodically generated random number. There are similar disadvantages with such counters. Therefore, the present invention is extremely effective in preventing fraudulent use of the jackpot generating means that obtains random numbers from such various known random number generating means.

Since the initial value of the random number is unspecified as shown in FIG. 5, the phase of the random number can be shifted every day for many pachinko gaming machines.
This eliminates the relationship with display fluctuations such as blinking of the display device, and increases the probability of occurrence of a jackpot by a special hitting method and prevents unauthorized modification of mounting an electronic circuit. Note that as a rewritable semiconductor memory capable of retaining stored contents even when the external power supply is cut off, EEPRO
In addition to M, a RAM with a backup battery or a flash memory can be used.

[0018]

As described above, according to the present invention, in a pachinko gaming machine provided with a jackpot generating means for generating a jackpot with a predetermined probability by a random number obtained when a hit ball wins a predetermined winning opening, Since the obtained random number is stored in the semiconductor memory, and the random number stored in the semiconductor memory is read as the initial value of the random number obtained by the jackpot generating means, the display of the display device or the clock for controlling the display is performed. Even if the signal is used,
It is difficult to change the probability of jackpot occurrence, which is very effective in preventing the jackpot occurrence from being illegally controlled.

[Brief description of the drawings]

FIG. 1 is a front view of a pachinko gaming machine according to the present invention.

FIG. 2 is a rear view of the pachinko gaming machine according to the present invention.

FIG. 3 is a block diagram of an electronic control circuit of the pachinko gaming machine according to the present invention.

FIG. 4 is a timing chart of random numbers obtained by the jackpot generating means of the pachinko gaming machine according to the present invention.

FIG. 5 is a timing chart of a random number value obtained by the jackpot generating means of the pachinko gaming machine according to the present invention.

FIG. 6 is a flowchart of the pachinko game machine according to the present invention.

FIG. 7 is a timing chart of a random number value obtained by a jackpot generating means of a conventional pachinko gaming machine.

[Explanation of symbols]

 Reference Signs List 4 game board 7 pass gate 8 electronic display 9 winning opening 10 starting winning opening 11 start switch 12 large winning opening 16 electronic control circuit board 24 EEPROM as semiconductor memory

[Procedure amendment]

[Submission date] April 27, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

For this purpose, the present invention relates to a pachinko gaming machine provided with a jackpot generating means for generating a jackpot with a predetermined probability by a random number obtained when a hit ball wins a predetermined winning opening, A rewritable semiconductor memory capable of retaining stored contents even when the external power supply is cut off is provided, and one of various output signals generated during normal operation of the pachinko gaming machine is output. The random number obtained at the time of occurrence is stored in a semiconductor memory, and the random number stored in the semiconductor memory is read as an initial value of the random number obtained by the jackpot generating means. Further, in the pachinko gaming machine, an output signal generated when a hit ball enters or passes through a predetermined winning opening or passing gate among a plurality of various winning openings or passing gates provided on the gaming board is provided. It is characterized in that a random number is stored in a semiconductor memory upon output.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Deleted

Claims (3)

[Claims] 1. A pachinko game machine equipped with a jackpot generating means for generating a jackpot with a predetermined probability by a random number obtained when a hit ball wins a predetermined winning opening, the stored contents even when an external power supply is cut off. And a rewritable semiconductor memory, and a random number acquired when any one of various output signals generated during the operation of the pachinko gaming machine is output. Wherein the random number stored in the semiconductor memory is read as an initial value of the random number acquired by the jackpot generating means. 2. The pachinko gaming machine according to claim 1, wherein a random number is stored in a semiconductor memory when the power of the pachinko gaming machine is turned off. 3. When an output signal generated when a hit ball enters or passes through a predetermined winning opening or passing gate among a plurality of various winning openings or passing gates provided on the game board is output. 2. The pachinko gaming machine according to claim 1, wherein a random number is stored in the semiconductor memory at an opportunity.