| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a game machine 1 which enables the accurate detection of the fraudulent attack to the selector 50. <P>SOLUTION: The game machine 1 is provided with the selector 50 which has the first and second fed token passage sensors 55a and 55b arranged at the specified interval along a token passage 52 through which pass the tokens M fed from the token slot 36. In the MPU 61, the total time is measured with a total time measuring timer 65 until the state of shielding the optical path of the second fed token passage sensor 55b is ended with the token M that arrives following the interval of the specified number of the tokens, after the start of the state of shielding the first fed token passage sensor 55a made with the token M at the timing t1. The comparison of the total time with the reference time enables the accurate detection of the fraudulent attack to the selector 50. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
