JP4739666B2 - Game control device - Google Patents

Description

  The present invention relates to a game control device that easily removes noise by transmitting an analog signal with a harness from a board side control device attached to a game board to a frame side control device attached to a gaming machine frame.

  A game control device shown in FIG. 3 is known as a pachinko machine. This game control device is composed of a plurality of individual control devices that are functionally divided from each other, such as a main control device 31, a payout control device 32, an indicator light control device 33, a launch control device 34, a symbol control device 35, and a sound control device 36. Is done. The main controller 31 is attached to the game board because it has control closely related to the game board model. When the main control device 31 receives a winning signal from each of the plurality of ball detectors 37 that detect the balls that have won the plurality of winning components provided in the game area of the game board, the main control device 31. Of the game, such as input processing, error processing, lottery processing, symbol control processing, prize ball control processing, command set processing, etc., by operating while using the RAM according to the program stored in the ROM And a command as a result of the execution is individually output to the payout control device 32, the indicator light control device 33, the launch control device 34, the symbol control device 35, and the sound control device 36, while the above game processing in general In accordance with the result, the component drive source 38 in the winning component blades, opening / closing body or movable component in the game board is controlled.

  When the payout control device 32 receives a command from the main control device 31, the CPU of the payout control device 32 operates using the RAM according to the program stored in the ROM, and a ball such as a prize ball or a rental ball is obtained. The payout drive source 39 of the payout mechanism for paying out the money is controlled. When the display light control device 33 receives a command from the main control device 31, the CPU of the display light control device 33 operates using the RAM according to the program stored in the ROM, so that the game board and the gaming machine frame are operated. And so on. When the launch control device 34 receives the launch permission or launch prohibit command from the main control device 31, the CPU of the launch control device 34 operates using the RAM according to the program stored in the ROM, and the gaming machine frame In a state in which the launch operation of the ball as the game ball is enabled or disabled and the launch operation of the ball corresponding to the launch permission command is enabled, the player operates the launch operation mechanism 41 of the gaming machine frame. Is operated, the firing drive source 42 of the firing mechanism is controlled at a firing output corresponding to the manipulated variable and at a constant interval of less than 1 / 100th of a minute. When the symbol control device 35 receives a command from the main control device 31, the CPU of the symbol control device 35 operates using the RAM according to the program stored in the ROM, and the symbol display 43 of the game board is displayed. Control. When the sound control device 36 receives a command from the main control device 31 from the interface 7, the CPU 8 of the sound control device 36 follows the program stored in the program ROM 9, the sound source IC 10, the musical score data ROM 10, the voltage adjustment circuit 12, the sound volume. The adjustment circuit 16, the tone loudness / wide control circuit 17, and the power amplifier 18 are operated to control the speaker 44 of the gaming machine frame.

  In particular, the sound control device 36 is divided into a board side control device 45 attached to the game board and a frame side control device 46 attached to the gaming machine frame for storing the game board in an exchangeable manner. The side control device 46 is connected by the harness 6, and the analog signal is transmitted from the panel side control device 45 to the frame side control device 46 by the harness 6. The board-side control device 45 includes an interface 7, a CPU 8, a program ROM 9, a sound source IC 10, a musical score data ROM 10, a voltage adjustment circuit 12, and the like that must be changed together with a change in the game board model. The frame side control device 46 includes a volume adjustment circuit 16, a tone / loudness / wide control circuit 17, a power amplifier 18 and the like which can be used as they are without being changed even if the game board model is changed. The tone control of the tone / loudness / wide control circuit 17 adjusts the bass and treble to the desired balance by increasing / decreasing the bass and treble respectively. The loudness control of the tone / loudness / wide control circuit 17 increases the bass and treble at the same time and corrects audibility. The wide control of the tone / loudness / wide control circuit 17 enhances the stereo feeling by manipulating the phase difference between the left and right sounds. In other words, the tone loudness / wide control circuit 17 is a portion that changes the tone color.

  Further, the signal transmission form from the panel-side control device 45 to the frame-side control device 46 is a low output impedance for the purpose of causing the panel-side control device 45 to flow as much current as possible to the load. The input impedance is high for the purpose of reducing the burden on the control device 45 side as much as possible. For this reason, the characteristic impedance of the harness 6 is high, and a signal current hardly flows through the harness 6. On the other hand, based on the generation of electromagnetic waves due to static air discharge accumulated by friction between the spheres and the resin parts that make up the sphere passage, or based on digital operations that process data in synchronization with high-speed clock signals in electronic circuits An electromotive force as noise is induced in the harness 6 by the generation of electromagnetic waves due to the repetition of the current on / off operation. The induced electromotive force of the noise is converted into a high voltage by the high characteristic impedance of the harness 6 although the current is small. Therefore, when the analog signal is transmitted from the panel side control device 45 to the frame side control device 46. The S / N ratio becomes worse.

For this reason, in order to prevent noise, a low-pass filter is inserted into the input unit of the frame-side control device 46, the analog signal is digitized and transmitted, the analog signal is digitized and then transmitted as an optical signal, For example, the length of the harness 6 is shortened and a shield wire is used for the harness 6. However, when a low-pass filter is inserted, the cutoff frequency of the low-pass filter is set above the upper limit of the frequency band of the analog signal and lower than the lower limit of the frequency band of noise. If the frequency band of the analog signal overlaps with the frequency band of the analog signal, the low-pass filter cannot remove the noise. When an analog signal is digitized and transmitted, an A / D converter and a D / A converter are required, the circuit becomes complicated, and the circuit scale increases. When an analog signal is digitized and then converted to an optical signal and transmitted, a converter and an optical fiber that convert electricity into light are necessary, which complicates the circuit and increases the circuit scale. When the length of the harness 6 is shortened, the length of the harness 6 that connects the board-side control device 45 attached to the gaming board and the frame-side control device 46 attached to the gaming machine frame is set to a length that is not affected by noise. It cannot be shortened so much. When a shield wire is used, the shield coating must be connected to GND or a coaxial connector must be used, which is disadvantageous in terms of practicality.
JP 2003-126374 A

  The problem to be solved by the invention is that the noise induced in the harness cannot be easily removed.

The game control device of the present invention is a control device that controls sound by a command from the main control device, is attached to the game board and outputs sound data, and is attached to the game machine frame and is controlled by the board side control. It is divided into a frame-side control device having a power amplifier that drives a speaker according to sound data output from the device, the panel-side control device and the frame-side control device are connected to each other by a harness, and the panel-side control device is an analog signal. In the game control device that transmits the signal to the frame-side control device using the harness, the board-side control device converts the voltage of the analog signal into a current and determines the characteristic impedance of the harness through a constant current detection resistor. a constant current circuit having a buffer amplifier that monitors the current output from the operational amplifier by the operational amplifier and a current flowing through the constant current detection resistor for outputting Composed Voltage - current conversion circuit are mounted on the frame side control device, said voltage - current feedback resistor the current of the transmitted analog signal having the same resistance as the constant current-sense resistor from the conversion circuit through a harness current into a voltage via a - a most important feature that the voltage converter circuit are al provided.

In the game control device of the present invention, the board-side control device converts an analog signal into current and transmits it to the frame-side control device through the harness, and the current input from the harness by the frame-side control device has the same resistance as the constant current detection resistor. The voltage is converted into an analog signal voltage via a feedback resistor having a value, and the voltage-current conversion circuit provided in the panel-side control device sends a current to the harness via a constant current detection resistor that determines the characteristic impedance of the harness. Since it is a constant current circuit that has an operational amplifier to output and a buffer amplifier that monitors the current output from the operational amplifier by the current flowing through the constant current detection resistor, the noise induced in the harness is compared with the voltage of the analog signal in the harness It is only converted as a minute voltage component, and it is transmitted from the board side control device of the analog signal to the frame side control device. There is an advantage that the S / N ratio in the case is improved.

  FIG. 1 shows a sound control device 1 of a game control device according to the first embodiment. In FIG. 1, the sound control device 1 is divided into a panel side control device 2 and a frame side control device 3. The divided configuration of the panel-side control device 2 and the frame-side control device 3 is such that separate control boards on which different electrical components are mounted are separately provided in separate control cases made of colorless synthetic resin having light transmittance. It is a built-in form. The board-side control device 2 is attached to the game board 4, the frame-side control device 3 is attached to the gaming machine frame 5 that stores the game board 4 in an exchangeable manner, and the board-side control device 2, the frame-side control device 3, Are connected to each other by the harness 6. The board side control device 2 has to be changed together with the model change of the game board 4 as electrical components mounted on the control board of the board side control device 2 as an interface 7, a CPU 8, a program ROM 9, a sound source IC 10, a musical score. A data ROM 11, a voltage adjustment circuit 12, and a voltage-current conversion circuit 13 are provided. The frame-side control device 3 can be used as it is without being changed even if the model of the game board 4 changes. As the electrical components mounted on the control board of the frame-side control device 3, the current-voltage conversion circuit 15, the volume adjustment A circuit 16, a tone loudness / wide control circuit 17, and a power amplifier 18 are provided.

  In the board side control device 2, when the interface 7 receives a command for the sound control device 1 output from the main control device 31 attached to the game board 4 and outputs it to the CPU 8, the CPU 8 stores the sound processing program stored in the program ROM 9. And the sound source IC 10 operates based on the command input from the interface 7, the sound source IC 10 extracts sound data from the data table of the musical score data ROM 11, converts the sound data extracted by the sound source IC 10 into an analog signal, and generates a voltage. Output to the adjustment circuit 12. Thus, the voltage adjustment circuit 12 adjusts the voltage of the analog signal to the voltage-current conversion circuit 13, and the voltage adjustment circuit 12 outputs the voltage-adjusted analog signal to the voltage-current conversion circuit 13.

  The voltage-current conversion circuit 13 is a constant current circuit, and includes an operational amplifier 20 that amplifies a minute voltage and a buffer amplifier 21 that monitors a current output of the operational amplifier 20. A frequency-dependent amplification factor determination unit including capacitors C2; C3 and negative feedback resistors R3; R4 is connected to the negative input side of the operational amplifier 20, and a capacitor C1 and a fixed resistor R5 are connected to the positive input side of the operational amplifier 20. A combination of the low-frequency cut of the analog signal input from the voltage adjustment circuit 12 and the voltage conversion of the output current monitored by passing through the buffer amplifier 21 is positively fed back. The resistance values R3; R4; R5; R6 in the negative feedback resistors R3; R4 and R5; R6 are set to exactly the same value.

  Thereby, the voltage-current conversion circuit 13 converts the minute input voltage Vi of the analog signal input from the voltage adjustment circuit 12 into an output current Io and outputs the output current Io. That is, the relationship between the input voltage Vi and the output current Io is controlled so that the output current Io = Vi / R7. However, the output current Io is below the rating of the operational amplifier 20. The resistance value R7 of the constant current detection resistor R7 determines the characteristic impedance of the harness 6, and therefore has a resistance of several hundred Ω. The buffer amplifier 21 performs impedance conversion and monitors the output current Io. If the resistance value R6 of the fixed resistor R6 (= R5 = R4 = R3)> resistance value R7 × 100 is set, the buffer The voltage-current conversion circuit 13 can be simplified by removing the amplifier 21 and connecting the constant current detection resistor R7 and the fixed resistor R6. As a power supply terminal of the panel side control device 2, for example, 12 V is provided as the power supply Vdd of the operational amplifier 20 and the buffer amplifier 21, and 5 V is provided as the power supply Vcc of the interface 7, CPU 8, sound source IC 10 and voltage adjustment circuit 12.

  In the frame side control device 3, the current-voltage conversion circuit 15 converts the input current Io input from the voltage-current conversion circuit 13 through the harness 6 into the output voltage Vo, and the output voltage Vo from the current-voltage conversion circuit 15 is The sound is supplied to the power amplifier 18 via the volume adjusting circuit 16 and the tone / loudness / wide control circuit 17 in order, and the power amplifier 18 drives the speaker. The current-voltage conversion circuit 15 obtains an amplified output voltage Vo associated with a change in the input current Io. That is, in the current-voltage conversion circuit 15, the operational amplifier 22 outputs the resistance value R8 of the feedback resistor R8 × the input current Io = the output voltage Vo. The input impedance in the current-voltage conversion circuit 15 is determined by the resistance value R8 of the feedback resistor R8. The fixed resistor R9 of the current-voltage conversion circuit 15 uses the same resistance value as the resistance value R8. The fixed resistors R10 and R11 of the current-voltage conversion circuit 15 provide an offset voltage (reference voltage) for operating the operational amplifier 22 as a single power source. The capacitor C4 is inserted for the purpose of stabilizing the offset voltage. Note that when the operational amplifier 22 is operated with both power supplies, such an offset circuit is not required and is connected to GND. The connectors A in FIG. 1 are connected to each other.

  Therefore, according to the first embodiment, the resistance value R3 = the resistance value R4 = the resistance value R5 = the resistance value R6 and the resistance value R7 = the resistance value R8, so that the output impedance and the frame of the panel-side control device 2 are set. When the output impedance Io corresponding to an analog signal is transmitted from the panel side control device 2 to the frame side control device 3 through the harness 6 by impedance matching with the input impedance of the side control device 3, the voltage-current is eliminated. The input voltage Vi in the conversion circuit 13 is equal to the output voltage Vo in the current-voltage conversion circuit 15. Even if noise is induced in the harness 6, the electromotive force of the induced noise is small in current, and the resistance value R7 (= R8) is set to a resistance value of about several hundreds Ω. Since the characteristic impedance of 6 is low impedance, the noise induced in the harness 6 is only converted as a minute voltage component compared to the output voltage Vo corresponding to the analog signal. Therefore, the S / N ratio when the analog signal is transmitted from the board side control device 2 to the frame side control device 3 is improved.

  FIG. 2 shows the sound control device 1 of the game control device according to the second embodiment. In the second embodiment shown in FIG. 2, an analog signal voltage is amplified by the panel side control device 2 and transmitted to the frame side control device 3 through the harness 6, and the voltage input from the harness 6 is attenuated by the frame side control device 3. By doing so, the frame-side control device 3 returns the voltage of the analog signal input from the panel-side control device 2 to the original voltage before being amplified by the panel-side control device 2, and attenuates the noise induced in the harness 6. And removing it. Specifically, the panel control device 2 includes a voltage amplification circuit 25 that replaces the voltage-current conversion circuit 13 of FIG. The sound generation circuit including the interface 7, CPU 8, program ROM 9, sound source IC 10, music score data ROM 11, and voltage adjustment circuit 12 in the panel control device 2 is the same as that in FIG. 1. The frame side control device 3 includes an attenuation circuit 26 that replaces the current-voltage conversion circuit 15 of FIG. The attenuation rate of the attenuation circuit 26 is the reciprocal of the amplification rate in the voltage amplification circuit 25. The sound volume adjustment circuit 16, the tone / loudness / wide control circuit 17, the sound reproduction circuit including the power amplifier 18 and the low-pass filter 23 in the frame side control device 3 are the same as those in FIG. 1. A voltage dividing resistor R23; R24 for offset (reference voltage) operation with a single power source is connected to the operational amplifier 27+ input side of the voltage amplifier circuit 25, and a negative value that determines the amplification factor is connected to the negative input side of the operational amplifier 27. Feedback resistors R21; R22 are connected. Therefore, the operational amplifier 27 outputs an output voltage Vo obtained by amplifying the input voltage Vi at a ratio R22 / R21 of the resistance value R21 of the negative feedback resistor R21 and the resistance value R22 of the negative feedback resistor R22. In this case, the power supply voltage Vdd of the voltage amplification circuit 25 is set to be as large as possible than the power supply voltage Vcc of the sound generation circuit in order to increase the amplification factor in the panel side control device 2, so Vcc = 5 volts, Vdd = 12. Bolts were used. If the capacitance of the capacitor C23 in the voltage amplifier circuit 25 is small, the cut-off frequency fc of the voltage-amplified analog signal output from the panel-side control device 2 increases, so the capacitor C23 does not increase the cut-off frequency fc. Use one with a rated capacity. The attenuation circuit 26 in the frame side control device 3 includes an attenuator 28 composed of resistors R25 and R26, and a buffer 29 for impedance conversion. The ratio R22 / R21 of the resistance value R21 of the feedback resistor R21 and the resistance value R22 of the feedback resistor R22 and the ratio of the resistance value R25 of the resistor R25 and the resistance value R26 of the resistor R26 (R25 + R26) / R26. Is equal (R22 / R21 = (R25 + R26) / R26), the voltage signal Vi before amplification in the panel-side control device 2 and the voltage signal Vo after attenuation in the frame-side control device 3 are equal (Vi = Vo). The connectors B in FIG. 2 are connected to each other.

  Therefore, according to the second embodiment, even if noise is induced in the harness 6, the audio signal is equivalently transmitted on a one-to-one basis, but the noise is attenuated by the attenuation circuit 26 of the frame side control device 3. Therefore, the S / N ratio in the case where analog signals are transmitted from the board side control device 2 to the frame side control device 3 is improved. If the panel-side control device 2 performs voltage amplification and the frame-side control device 3 performs attenuation, the effect of reducing noise can be achieved even if the reciprocal of the amplification factor does not exactly match the attenuation factor. can get.

  The low-pass filter 23 may be removed to reduce the number of parts.

The block diagram which shows the sound control apparatus of a game control apparatus (1st Embodiment). The block diagram which shows the sound control apparatus of a game control apparatus (2nd Embodiment). The block diagram which shows a game control apparatus (conventional).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sound control apparatus 2 Board side control apparatus 3 Frame side control apparatus 4 Game board 5 Game machine frame 6 Harness 13 Voltage-current conversion circuit 15 Current-voltage conversion circuit 25 Voltage amplification circuit 26 Attenuation circuit 31 Main control apparatus

Claims (1)

The control device that controls the sound with the command from the main control device,
A board-side control device that is attached to the game board and outputs sound data;
It is divided into a frame-side control device having a power amplifier that is attached to the gaming machine frame and drives a speaker according to the sound data output from the board-side control device,
In the game control device in which the board side control device and the frame side control device are connected to each other by a harness, and the board side control device transmits an analog signal to the frame side control device by a harness.
The panel-side control device flows through the constant current detection resistor and the operational amplifier that outputs the current to the harness via the constant current detection resistor that converts the voltage of the analog signal into the current and determines the characteristic impedance of the harness. A voltage-current conversion circuit including a constant current circuit having a buffer amplifier that monitors a current output from the operational amplifier by a current ;
The frame side control device includes a current-voltage that converts the current of the analog signal transmitted through the harness from the voltage-current conversion circuit into a voltage through a feedback resistor having the same resistance value as the constant current detection resistor. game control device, wherein the conversion circuit is al provided.

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