Dynamic magnetic information storage or retrieval – Record editing
Patent
1970-02-02
1979-05-15
Britton, Howard W.
Dynamic magnetic information storage or retrieval
Record editing
360 84, 360107, H04N 578
Patent
active
RE0299995
ABSTRACT:
The specification describes an improvement in multiple head, helical scan-type video, magnetic tape recorders. In greater detail, only one of two fields, which make each frame of the video signal, is recorded on a magnetic tape which travels at one half of the conventional running speed, the one field thus recorded is reproduced by both of the pair of magnetic heads, one after the other in succession, thereby reproducing a signal of one frame consisting of the two fields and constituting the original signal.
The system and apparatus for recording and reproducing television video signals according to this invention renders it possible to record and reproduce with substantially one half of the amount of the magnetic tape compared with that required for the conventional systems.
REFERENCES:
patent: 2921124 (1960-01-01), Graham
patent: 2979558 (1961-04-01), Leyton
patent: 3152223 (1964-10-01), Wessels
patent: 3157738 (1964-11-01), Okamura
patent: 3157739 (1964-11-01), Okamura
patent: 3294902 (1966-12-01), Maxey
patent: 3359365 (1967-12-01), Kihara
patent: 3478177 (1969-11-01), Morita
Britton Howard W.
Victor Company of Japan , Limited
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