| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of suppressing a fraud. SOLUTION: A game board 30 of a Pachinko game machine includes various types of ball entering means such as a general winning hole 31, and various types of ball entry detection switches such as a winning hole switch 221 for detecting a game ball entering the ball entering means. The winning hole switch 221 and the like are connected to a main control device, output a first level signal when non-detecting the game ball and output a second level signal when detecting a game ball. The main control device periodically monitors a signal level input from the winning hole switch 221 and the like, and determines the presence/absence of the ball entry in a general winning hole 31 and the like based on the signal level. The main control device determines whether or not a duration of a predetermined-level signal input from the winning hole switch 221 and the like during the detection of the game ball exceeds a preset prescribed period and determines the abnormality of the signal input from the winning hole switch 221 or the like. COPYRIGHT: (C)2009,JPO&INPIT
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