| 摘要 |
PURPOSE:To shorten the time required for correcting the time, by constituting the titled device so that generation of a fast forward pulse is started in a shorter time than a set time, in case when a fast forward is executed by operating continuously a time adjusting switch above the set time, and thereafter, a continuous operation of the time adjusting switch has been executed again. CONSTITUTION:In case of executing a fast forward by a correcting pulse of a high speed, a switch S remains closed continuously above a time T1. By closing the switch S, an output of a flip-flop circuit F3 goes to '1', reset of shift registers SR1, SR2 is released, a gate circuit G4 is opened, a fast forward pulse CL2 from a terminal t4 passes through, and it passes through a gate circuit G6 and the time is brought to a fast forward. Also, when a time T4 elapses, an output is generated from an output QN of the shift register SR2. As a result, a gate circuit G3 is opened, and a clock pulse CL1 (CL1>CL2) from a terminal t3 passes through the gate circuit G3. It passes through the gate circuit G6 and the time is brought to a fast forward at a higher speed. |
