| 摘要 |
<p>PURPOSE:To suppress the damage of a tape to a minimum by switching a generating torque control circuit so as to keep the revolution speed of a take-up side reel motor constant when no regenerative control signal exists. CONSTITUTION:A control(CTL) signal regenerated with a CTL head 2 at the time of feeding the tape at high speed, after being amplified by an amplifier 3, is supplied to a velocity control means 4, and a velocity control signal is formed, and inputted to a reel motor driving circuit 34(35) via a low-pass filter (LPF) 7, and the generating torque of a reel motor 30(31) is controlled, and tape feed speed is controlled. Meanwhile, the CTL signal is supplied to a CTL signal detecting means 5, and the cycle of a regenerative CTL signal is detected, and the generative CTL signal exceeding a prescribed cycle is judged as a signal nonrecording part. When the tape arrives at the signal nonrecording part, the reel motor 30(31) is controlled so as to be rotated at constant revolu tion speed. In such a manner, it is possible to suppress the damage of the tape received at the time of feeding the tape at high speed to a minimum.</p> |
