| 摘要 |
PROBLEM TO BE SOLVED: To detect the position of a design accurately as an absolute position for comfortable playing for players by fixing a disk having a code constituted by a plurality of bits at the position corresponding to the design, by providing a decoder for reading a specific design from the code and by detecting the absolute position of the design. SOLUTION: A motor 22 is mounted on a rotational center axis of a reel 25 and the motor 22 is fixed to a frame 23. A plurality of designs 21 are arranged on the circumference of the reel 25, and a disk 20 is fixed at a rotation angle corresponding to the designs 21 so that the central axis enters in a circular notch. An optical reading device 24 for detecting bit strings in the disk 20 at the same time is fixed on the frame 23, a light emitting element and a light receiving element of the optical reading device 24 are arranged in the radial state to the disk 20 so that every bit can be detected, and the designs 21 of the reel 25 at the stationary position are electrically detected. |
