| 摘要 |
<p>PURPOSE:To make the running speed of tape at the recording and reproducing equal and reproduce recording signals faithfully by controlling the rotating speeds of capstan at the reproducing by the use of the control signal having been recorded. CONSTITUTION:In a recording state, the control signal other than the audio frequency from a circuit 3 is superposed on the input signal of terminal 2 and is recorded in tape 1. In reproduction state, the control signal out of the signals having been reproduced via head 6 from the tape 1 is extracted 9 and is supplied to a control circuit 14 via switch 13 after frequency dividing 10. This turns out that a capstan 12 is controlled of its rotating speed by the output of the circuit 14 and is thus driven according to the elongation and contraction of the tape 1, whereby the recording signals may be faithfully reproduced.</p> |
