Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format
Patent
1995-12-19
1998-04-14
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data in specific format
360 18, 360 7304, 386 78, 386 68, G11B 509, G11B 5584
Patent
active
057399689
ABSTRACT:
In a magnetic recording/playback apparatus for recording and playing back a digital video signal on a helical track of a magnetic tape using two or more rotary heads, the playback image at the time of high-speed playback is improved by setting the tape travel speed at the time of high-speed playback at an even multiple of a normal playback speed. Further, a tracking phase is offset by one half the track pitch with respect to the tracking during normal speed playback. Alternatively, essential information of the information having been high-efficiency coded is recorded in the central part, and near the ends of the tracks, while high-precision information is recorded in intermediate parts intermediate between the central part and the parts near the ends. Still alternatively, the video data of one of the consecutive fields is recorded in the central part of the tracks and the video data of the other of the consecutive fields is recorded near the ends of the tracks.
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Inoue Haruhisa
Inoue Sadayuki
Ishimoto Junko
Onishi Ken
Cullen Larry T.
Mitsubishi Denki & Kabushiki Kaisha
Psitos Aristotelis M.
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