| 摘要 |
<p>PURPOSE:To reduce the speed fluctuation at a joint of electronic edition, by releasing the operation of a reset and a latch means at the recording mode, and presetting an output of the latch means to a delay counter. CONSTITUTION:In the standby mode of electronic edition, a count start value is preset to a delay counter with a control signal (a), a value on the way of count is latched to a latch circuit 7 with a conversion signal (c). At the switching to the recording mode, the latch operation is released, the value of the latch circuit 7 is preset to the delay counter 6 with the first conversion signal (c) to cancel the phase shift between the signals (a) and (c). Thus, the relation of phase between a reference signal (e) and a delay signal (g) of the delay counter 6 can be kept constant, and the disturbance of synchronism of a capstan servo system can be prevented, allowing to eliminate the fluctuation of the tape speed at joints of electronic edition.</p> |
