| 摘要 |
<p>PURPOSE:To prevent the occurrence of a blank space having no picture recording by rewinding a prescribed magnetic tape amt. to a S(supply) reel after loading. CONSTITUTION:On completion of loading, the completing signal from a loading motor 3 is received by CPU 1, the rewinding instruction of the S reel motor 4 is given to a system controller 2, at the same time, the subtracting command is supplied to an up/down counter 6. The counter 6 counts, by a minus value, FG pulse to be generated accompanied by rewinding rotation of the S reel motor 4, the counter goes to zero by rewinding as much tape amt. as the magnetic tape amt. drawn out by loading. Furthermore, by counting, when the time in coincidence with -alpha to the rewinding reference value alpha, preset to the set value circuit 8 is detected by a coincidence detecting circuit 7, the rewinding rotation of S reel motor 4 is stopped by CPU 1 via the controller 2, and the picture recording becomes in the state of standby. The occurrence of the blank space of the picture recording is thus eliminated.</p> |
