| 摘要 |
<p>PURPOSE:To make it possible to automatically control the start of video recording and the stop of video recording on the side of other machine at the time of reproducing necessary video image and at the time of the fast forwarding of unnecessary video image based on the duty ratio of a control signal to be recorded in a video tape as discrimination information. CONSTITUTION:By a duty ratio rewriting means composed of a duty ratio switch control circuit 1, a duty ratio switch circuit 2, a servo circuit 3 and a control head 4, the duty ratio of a control signal for the reproduced video image of a video tape 5 is rewritten. Thus, the necessary video image and unnecessary video image of the video tape 5 is discriminated and it is recorded as discrimination information.</p> |
