Video insert editing with control signals derived off tape or fr

Details Video insert editing with control signals derived off tape or fr Video insert editing with control signals derived off tape or fr

1982-12-14

1985-04-09

Cardillo, Jr., Raymond F.

Dynamic magnetic information storage or retrieval

Record editing

360 13, 360 70, 360 73, H04N 5782, G11B 2702

Patent

active

045105359

ABSTRACT:
A magnetic recording and reproducing apparatus comprises first through fourth circuits. The first circuit edits and records a new video signal within a predetermined section of a magnetic tape which is pre-recorded with a video signal and a control signal on respective video and control tracks. The second circuit produces a new control signal having a frequency identical to that of the pre-recorded control signal. The third circuit reproduces the pre-recorded control signal from the tape while the first circuit is operating. The fourth circuit detects the existence of a control signal reproduced by the third circuit, and supplies the new control signal which is produced by the second circuit to the third circuit when the non-existence of the reproduced control signal is detected, so as to record the new control signal on the control track of the tape.

REFERENCES:
patent: 4115819 (1978-09-01), Shigeta
patent: 4175271 (1979-11-01), Kaemmerer
Kybett, Harry; Video Tape Recorders; 1974; Sams Publishing; Ch. 10.

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