| 摘要 |
PURPOSE:To use the reproduced signals to various types of control signals, by recording new signals at the area where the video signals, etc. are recorded and then reproducing each signal individually in a repsoduction mode. CONSTITUTION:A tape 1 travels along a rotary cylinder 4, and the video signal is recorded by a video head 5. Then the tone burst signal of 6kHz is revorded on the tape 1 by a magnetic head 8 having a head gap 2 with about 45 deg. inclination. For instance, a switch 13 connected to a control circuit 12 is truned on to perform the program searching. Thus the tape is forwarded fast, and the area where the picture recording is started on the tape reaches the front of the head 8. The head 8 reproduces the signal of about 60kHz, and this reproduced signal drives a detector 17 via a switch 11, an amplifier 15 and a BPF16. As a result, the working state of the circuit 12 varies and a tape driving device is changed to a reproduction mode from a fast forward mode. Thus the reproduction is started at the picture recorded area. |
