| 摘要 |
<p>PURPOSE:To surely hold a reproducing head to a just tracking condition by correcting the feeding action time in accordance with the change of a tracking error detecting signal when a magnetic tape is slowly reproduced. CONSTITUTION:A tracking error detecting signal S3 obtained from an error signal forming circuit 3 is given to a sample-and-hold circuit 42 of a slow reproducing control circuit 41. The circuit 42 receives a head switching signal RF-SW and sends the signal level of the signal S3 to a tracking dislocation detecting circuit 43 as an error voltage. The circuit 43 operates a first driving time correcting value from the difference between a reference voltage and an error voltage and sends this through an adder circuit 44 to a capstan driving circuit 46 as a first correcting time signal SdT1. The circuit 46 corrects the feeding reproducing time of the reproducing head by the signal SdT1. Thus, the reproducing head can surely be held in the just tracking condition.</p> |
