| 摘要 |
<p>PURPOSE:To immediately execute leading in the phase of a cylinder motor after the end of loading by selecting a vertically synchronizing signal when a reference signal of a cylinder phase control system is a recording mode, and at the time of reproducing mode, selecting an output signal of a reference phase signal generating means. CONSTITUTION:The title device is provided with a phase reference signal switching means 6 for switching the phase reference signal of a cylinder motor to an output signal of a reference signal deciding means 5 at the time of the reproducing mode based upon the decided result of a mode deciding means 2 or an output signal of a vertically synchronizing signal separating means 4 at the time of the recording mode in case of winding a magnetic tape around a cylinder by a loading means. Since a reference signal from a cylinder phase control means 7 goes a vertically synchronizing signal at the time of recording and an output signal from the means 5 at the time of reproducing even in case of loading, the phase leading-in of the cylinder phase control system can be immediately executed.</p> |
