| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of suitably performing detection of game media.SOLUTION: A variable winning device 22 provided in a game board comprises a big winning port and an opening/closing door to open/close the big winning port, and also comprises a variable winning detection sensor 22e for detecting a game ball that has made a winning to the big winning port. The variable winning detection sensor 22e comprises an oscillation circuit which shifts, on the basis of a winning of a game ball, from a state where oscillation signals are outputted to a state where the oscillation signals are stopped, and a detection circuit for outputting detection signals on the basis of an oscillation state of the oscillation circuit. The detection circuit comprises a comparison circuit to compare an oscillation frequency of the oscillation signals to be inputted to the detection circuit and an oscillation frequency of the oscillation signals to be outputted from the oscillation circuit.SELECTED DRAWING: Figure 6 |
