| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a game machine that prevents an illegal act to cause false winning detection. <P>SOLUTION: This game machine includes: a detection means detecting a game ball; and a control means controlling a game based on a detection signal from the detection means. The detection means includes: a first oscillation circuit oscillating a high-frequency signal of a predetermined band; a first LC resonant circuit including a first coil for detecting approach of the game ball, and having a resonance frequency including the band of the high-frequency signal; a detection signal output means outputting the detection signal when the first oscillation circuit enters an oscillation stop state; a second LC resonant circuit including a second oscillation circuit oscillating a high-frequency signal including the band of the first oscillation circuit and a second coil, and having a resonance frequency including the high-frequency signal; and an abnormal signal output means outputting an abnormal signal. The first LC resonant circuit causes the first oscillation circuit to enter the oscillation stop state when the game ball approaches, the second resonant circuit causes the second oscillation circuit to enter an oscillation stop state in normal condition, and the abnormal signal output means outputs the abnormal signal when detected that the second oscillation circuit is in the oscillation state. <P>COPYRIGHT: (C)2013,JPO&INPIT |
