| 摘要 |
<p>PURPOSE:To simplify circuit constitution by controlling a capstan for tape driving in specified rotating speed, and searching and reproducing a marker signal recorded between an audio and a video signals while a tape travels in high speed regardless of whether it is SP or LP recording in the reproduced tape and the traveling direction. CONSTITUTION:The marker signal recorded between the audio and the video signal recording areas is searched and reproduced by a drum phase servo circuit 15, a rotary drum 23 and a drum speed servo circuit 27. In such a case, the reference voltage for serching the marker signal is given to a capstan speed servo circuit 1 through the contact (a) of a switch 3 and the capstan 7 is controlled in the specified rotating speed (ten times of normal reproducing speed). In such a manner, the marker signal of the tape in high speed traveling is serched and reproduced regardless of the SP or LP recording and the traveling direction of the tape, and the output of a tracking servo circuit 11 is opened by a switch 13. Consequently, switching of the servo circuit and detecting of SP/LP are eliminated, and the constitution is simplified.</p> |
