| 摘要 |
PROBLEM TO BE SOLVED: To provide the fair games by preventing the generation of the specified random number with the higher probability even when the vicious players operate the games using the vibrations as a reference from the illegal gadgets with a simple circuitry. SOLUTION: The LPF 320 forms a first random number acquisition signal into the second random number acquisition signal by removing the higher pass component from the first signal. A temperature control circuit 321, a heater 322 and a temperature sensor 323 change the time constant of the LPF 320 by varying the temperature of the resistor R1 of the LPF 320. When a second random number acquisition signal generated by the LPF 320 reaches the prescribed value, a waveform forming circuit 314 forms the second random acquisition signal into the steplike latch signal in a waveform to be outputted as a third random number acquisition signal. A memory circuit 313 temporarily holds the counts given by a counting circuit 312 when the third random number acquisition signal is inputted from the waveform forming circuit 314. COPYRIGHT: (C)2006,JPO&NCIPI
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