| 摘要 |
<p>PURPOSE: To accurately record a control signal in a fixed period by giving a low level signal to a control head when a 1st counter becomes a 1st prescribed value and the 2nd counter becomes a 2nd prescribed value in their count. CONSTITUTION: When a capstan motor 4 is started to rotate, an FG pulse is outputted from a fitted FG 6 and is counted by an FG counter 18, and its count becomes a prescribed value, a low level voltage corresponding to a count value of a target period is outputted from a period of an FG pulse immediately before the FG pulse at the prescribed count value. At the same time, the FG pulse is counted by a braking pulse generating circuit 12, and then the count becomes a prescribed value, a braking pulse is applied to the capstan motor 4 to stop the motor 4. In the next intermittent feed, in order to maintain, for instance, 25.8 pulses per frame, the recording control signal is changed to the N-pole at a pulse value of 25.8-15.5=10.3. Consequently, simultaneously with the next start-up, the FG pulse is counted by the FG counter 18, and when the count becomes 10.3 pulse value, a high level output is outputted.</p> |
