| 摘要 |
PROBLEM TO BE SOLVED: To make fraudulence of a discharger relative to a sensor detectable without installing a large-scale implement.SOLUTION: There are installed in a game machine: a control means that activates an operation device until a required number of game balls is detected based on an input from a detection sensor; a fraudulence detection sensor that is composed of the same type of sensor as the detection sensor; a surveillance means that watches fraudulence based on an input from the fraudulence detection sensor; and a notification means that performs prescribed notification based on the detection of fraudulence by the surveillance means. The detection sensor is arranged in a lower part from a driving source, and a coil is set in the detection sensor and the fraudulence detection sensor in accordance with detection holes in which game balls pass through. While a detection state is turned on by the passing of game balls to the coil, a non-detection state is turned on, with the irradiation of a wave of a specific frequency, even if game balls pass to the detection holes. With the purpose of normally turning on the detection state of the fraudulence detection sensor, with game balls or a metallic mass arranged in the detection holes, the coil of the fraudulence detection sensor and that of the detection sensor are nearby arranged side by side.SELECTED DRAWING: Figure 5 |
