| 摘要 |
<p>PROBLEM TO BE SOLVED: To more securely detect a fraudulent act to detection means for detecting a game medium.SOLUTION: A switch for detecting a game ball has a proximity switch 23a provided on an upstream side and a photo sensor 23b provided on a downstream side in a flow channel of a game ball (or, a photo sensor 23b provided on an upstream side and a proximity switch 23a provided on a downstream side in a flow channel of a game ball). In other words, the switch is composed of two switches or sensors having different detection methods. When the detection count of the game ball by the switch or the sensor on the upstream side is larger than the detection count of the game ball by the switch or the sensor on the downstream side for a predetermined number, a game controlling microcomputer controls to make an error notification, determining that a fraudulent act to the switch is received.</p> |
