Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Synchronizing moving-head moving-record recorders
Patent
1977-07-22
1979-01-16
Konick, Bernard
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Synchronizing moving-head moving-record recorders
G11B 2110, H04N 578
Patent
active
041352157
ABSTRACT:
In using helical-scan-type apparatus for recording video information in parallel tracks on magnetic tape, the typical slanted arrangement of the tracks results in track-to-track shifting or offset. Tape scanning apparatus adapted for implementing an improved recording technique employs an incremented scanning head speed for scanning one track in a period of time that departs from the period of one video signal sequence (e.g. a video field or frame) by an amount that is specially selected in accordance with the track offset. By so incrementing the scanning head speed the position of a video signal sequence within a track is shifted with respect to the signal sequences in adjacent tracks in a manner that compensates for the offset and provides a closer correlation between the video signal in adjacent tracks, thereby minimizing the effects of cross-talk between tracks.
REFERENCES:
patent: 3157739 (1964-11-01), Okamura
patent: 3215772 (1965-11-01), Kihara
patent: 3234325 (1965-02-01), Backers et al.
patent: 3643012 (1972-02-01), Clark et al.
Close Thomas H.
Eastman Kodak Company
Konick Bernard
McElheny Donald
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