| 摘要 |
PROBLEM TO BE SOLVED: To surely distinguish between an abnormal state and an illegal state by a magnetic sensor and a radio sensor, and from information of the number of game balls such as recepted balls and discharged balls. SOLUTION: A pachinko game machine 1 is provided with a ball discharge sensor 3b, a big hit sensor 3c, a sales sensor 3g, a door sensor 3h, a window frame opening/closing sensor 3i, a radio wave sensor 3j and a magnetic sensor 31. The machine also includes memories such as a recepted ball counter 511 and a ball discharge counter 512 for storing the number of the respective balls. A part for deciding the abnormality in a normal recepted and discharged ball ratio value and a part for judging the abnormality in a probability change recepted and discharged ball radio value calculate a number ratio between the recepted balls and the discharged balls and judge the abnormality and illegality when the ratio largely deviates from a set value. Information of the both judgements parts, are determined by program software through the use of the CPU 6 of a computer and an alarm device 10 is operated. COPYRIGHT: (C)2003,JPO
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