Dynamic magnetic information storage or retrieval – Record editing
Patent
1979-07-19
1982-07-27
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
Record editing
360 64, 360 73, 360 75, 360 21, 360 70, H04N 578, G11B 1552
Patent
active
043420532
ABSTRACT:
A video signal, speed-change reproducing system has a tape on which a video signal has been recorded. The tracks are disposed contiguously and obliquely relative to the tape longitudinal direction. The successive tracks are individually recorded by a plurality of rotating heads having gaps of mutually different azimth angles. The tape travels at a selected speed V which is represented by the equation ##EQU1## wherein Vo is the tape speed for normal reproduction (and recording), and n is a positive or negative integer. A pair of rotating reproducing heads have reproducing gaps which are also of the same mutually different azimuth angles that are used for recording. The reproducing heads are adapted to successively scan the tracks of the tape to reproduce the recorded video signal. The centers of the track width of the rotating heads are different in height positions with respect to the rotational planes in which the heads travel. The rotational phase of the reproducing heads are controlled such that each time instant when the level of the reproduce signal becomes a minimum value is within or in the vicinity of a vertical blanking period, and the minimum level of the reproduced signal does not become zero.
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Bernat Louis
Canney Vincent P.
Faber Alan
Victor Company of Japan Ltd.
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