| 摘要 |
<p>PURPOSE:To eliminate the discontinuity of a horizontal synchronizing signal by storing a reproduced output of the N-th track (N is a positive integer) from a detected track and providing a duty varying means changing the duty of a control pulse of the stored track in forward running when a semiconductor memory is used for one speed shot reproduction. CONSTITUTION:Suppose that low speed shot reproduction is started at a time (t=0), when a time elapses for a while and a track '3' is passed by, a reproduced output from the track '3' is written in a memory 17. The duty of a control pulse (CTL) of the control track corresponding to the video track '3' is changed. In this case, after an index by the duty change of the 1st control pulse (CTL) is detected, the Nth (N is a positive integer) video track reproduced output is written in the memory without fail, the video track is reproduced accurately sequentially without writing the same track into the memory to attain one speed shot reproduction.</p> |
