| 摘要 |
<p>PURPOSE:To perform consecutive recording smoothly by performing the rotary phase control of a capstan motor with a tracking error signal from an ATF circuit immediately after starting the consecutive recording, and switching control to the one with an APC detector after setting a natural state. CONSTITUTION:An automatic track detection ATF circuit 10 can be operated as performing recording since a rotary head of four-head system provided with independent recording head and reproducing head is equipped. Therefore, the rotary phase control of the capstan motor 1 is performed with the tracking error signal 500 obtained from the circuit 10 immediately after starting the consecutive recording, and the control is switched to the one with the APC detector after the natural state is set. Thereby, it is possible to perform the switching of a control system in the consecutive recording without supplying large fluctuation to a driving voltage on the motor 1, and to perform the consecutive recording smoothly by preventing a recording track pattern from being disturbed.</p> |
