| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which enables the reporting of the opening of a door body to a specified device even when a power source of the game machine is kept off. SOLUTION: A frame opening detection circuit 280 is provided with an integration circuit 281 and so, can keep the lowering period of the TRG terminal voltage of a timer IC1 within about 2 ms regardless of the opening period of the inner frame 12 and the front frame 14 to make the timer IC1 functioning as a monostable multivibrator operate normally, thereby holding the rising period of the OUT terminal voltage of the timer IC1 within about 10 ms. As a result, without adopting a specific circult constitution, the frame opening detection circuit 280 can keep a high signal to be output to the hall computer 262 suspended for about 10 ms at each opening of the inner frame 12 or front frame 14. In addition, the frame opening detection circuit 280 with the battery SB1 can detect the opening of the inner frame 12 or the front frame 14 even when the supply of the power source to a pachinko machine is shut down. COPYRIGHT: (C)2009,JPO&INPIT
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