| 摘要 |
<p>PURPOSE:To make the titled device small in size and light in weight by calculating the number of revolutions required for a motor depending on a selected mode and the preceding mode to drive the motor by the number of revolutions. CONSTITUTION:When the device is in the stop mode and a mode selection means selects the reproducing mode, a mode control means calculates the rotary angle of the motor 2 required to drive a cam disk 8 by a prescribed angle from the stop mode and the reproducing mode. Then a motor control signal based on the result of calculation is given to the motor 2 to drive the motor 2 in the driven direction. Then the motor 2 is stopped according to the motor control signal. The cam disk is driven to a required angle and the moving member 9 is moved in the direction of an arrow A together with the cam follower 10 and stopped after the moving of a required distance. As a result, the device is brought into the reproducing mode. Through the constitution above, whether or not the device is in the prescribed mode is judged without providing any switch group, then the small size and light weight are attained.</p> |
