| 摘要 |
PROBLEM TO BE SOLVED: To evade a failure that a ball which enters before start winning wins V and a specified game state is newly generated and the failure that the ball which enters before V winning wins V and the specified game state is continued. SOLUTION: Ball detection by a specified ball detector 48 is invalidated at the point of time at which prescribed time Tf' elapses and the ball detection by a start ball detector 5b is validated at the point of time at which the end condition of the specified game state is established. The prescribed time Tf' is set to be the same as interval time Tf and the interval time Tg is set to a length equal to or longer than the prescribed time Tf'. Thus, the failure that the ball which enters before the start winning wins V and the specified game state is newly generated and the failure that a winning ball during a previous round remains and shifting to the next round is performed by the V winning of the winning ball are evaded.
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