| 摘要 |
<p>PURPOSE:To correctly maintain the counted content of a counter and to correctly operate a motor thereby to accomplish the reproducing operations by using a logic control system for stopping the counting operation of the counter simultaneously with the motor stop. CONSTITUTION:If a counter 25 is set at 000 and a REC button is depressed, a motor drive circuit 31 is operated to turn a motor. As a result, a rotary member 17 is turned to generated pulse signals a from sliders 19a and 19b for each rotation. The signals a are fed to the counter 25 so that they may be counted up. On the other hand, the recording operation is finished at the counted number of 178, and then a REW button is depressed. Then, the rewinding operation is effected so that the content of the cunter 25 is counted down. When the content of the counter 25 is returned to 000. the motor drive circuit 31 is operated through an AND gate 28 in response to the output signals d from the counter 25 thereby to stop the motor. If a PLAY button is depressed, the circuit 31 is operated to turn the motor so that the counter 25 starts its counting-up operations from 000.</p> |
