Dynamic magnetic information storage or retrieval – Recording or reproducing plural information signals on the...
Patent
1981-11-19
1985-07-02
Cardillo, Jr., Raymond F.
Dynamic magnetic information storage or retrieval
Recording or reproducing plural information signals on the...
360 191, 360 331, 360 66, 360118, G11B 502, G11B 527, H04N 5782
Patent
active
045272026
ABSTRACT:
In a video tape recorder having at least one rotary magnetic head for recording and reproducing a video signal on a magnetic recording tape, a control signal which will be used for controlling the rotation of the rotary head and the movement of the tape is recorded via a stationary head located at a preceding point from the rotary head. The gap of the stationary head extends in the transverse direction of the tape so as to cover the entire or nearly entire width of the tape. Thus, the control signal is recorded on the magnetic tape throughout the entire or nearly entire width thereof, preventing undesirable dropout. By supplying the stationary head with a high frequency erasing current together with the control signal, the stationary head may function not only as a control signal recording head but also as an erase head. A double-gap type head having high erasing efficiency may be used by selecting the distance between the two gaps thereof or by using two gaps having different gap lengths or spacing from each other.
REFERENCES:
patent: 3060670 (1962-12-01), Eldridge et al.
patent: 3278678 (1966-10-01), Rank
patent: 3283085 (1966-11-01), Lemke
patent: 3956769 (1976-05-01), Beecroft
Cardillo, Jr. Raymond F.
Victor Company of Japan , Limited
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