| 摘要 |
<p>PURPOSE: To simply recognize reproducing video signals of an introduction part succeeding a beginning signal by detecting the beginning signal, muting audio signals, outputting only predetermined video signals and performing a required search. CONSTITUTION: A reproducing beginning signal by a beginning signal-recording/ reproducing head 4 is detected by a beginning signal-detecting circuit 5, and a pulse signal giving an instruction for the automatic reproduction time for an introduction part is output from a pulse signal-generating circuit 6. Reproducing audio signals are muted by the pulse signal via an audio muting circuit 13, and at the same time, a switch 10 is changed over. As a result, only reproducing video signals of the introduction part are output from a video signal- processing circuit 9. Moreover, a driving mechanism 3 is controlled by the output of the circuit 5, thereby, a search operation alternately repeating high- speed fast forwarding or high-speed rewinding, and low-speed reproduction is carried out. Accordingly, video signals of the introduction part succeeding the beginning signal clan be simply and surely recognized.</p> |
