| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a game machine that can rapidly detect occurrence of an internal abnormal state. <P>SOLUTION: When a difference between the number of launched game balls and the number of recovered game balls reaches a first predetermined value (+15 or -5), a failure omen detection signal indicating an omen of a failure is output. When the difference between the number of launched game balls and the number of recovered game balls reaches a second predetermined value (+30 or -10) greater in absolute value than the first predetermined value, a failure occurrence detection signal indicating the occurrence of the failure is output. <P>COPYRIGHT: (C)2013,JPO&INPIT |
