| 摘要 |
PURPOSE:To position respective heads of plural information automatically, by switching the high-speed reproducing mode to the reproducing mode by the signal from the no-sound detecting part and by switching the reproducing mode to the high-speed reproducing mode again after a fixed time and by repeating these switching operations. CONSTITUTION:When mode switch 4 is turned on to set the high-speed reproducing mode, magnetic head 1 detects the no-sound part, and electronic switch 3 is turned on by the output of no-sound detector 2, and relay R3 is operated. Relay switches SWR31 and SWR32 are operated, and self-holding of relay R2 is released. Though reel driving motor 5 is set to the stop mode temporarily, relay R1 and timer T1 are operated, and relay switch SWR11 is turned on, and magnetic head 1 and reel driving motor 5 are switched to the reproducing mode by the operation of plunger 6. After a prescribed time, timer T1 drives timer switch SWT1 to switch the mode to the high-speed reproducing mode. |
