Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1992-06-01
1994-06-28
Psitos, Aristotelis
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7309, 360 7312, G11B 5584, G11B 15467, G11B 1552
Patent
active
053252462
ABSTRACT:
In a helical scan recorder in which timing signals are recorded on adjacent slant tracks on magnetic tape, an automatic tracking technique for maintaining correct reproduce head to track positioning. The automatic tracking technique includes reproducing recorded timing signals from adjacent slant tracks on magnetic tape, producing first and second simultaneous repetitive reference signals which are coherent with the reproduced timing signals and which are 180.degree. out of phase with each other, simultaneously sampling each of the reference signals with the reproduced timing signals, selecting from the sampled reference signal the signals which are sampled in the mid-range of values thereof, and comparing the selected sampled reference signals and producing a tracking error signal if there is a difference therein.
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Harry Kybett, "Video Tape Recorders," 2nd Edition, 1978, pp. 148-156.
Clark Harold V.
Guisinger Barrett E.
Datatape Incorporated
Habermehl James L.
Noval William F.
Psitos Aristotelis
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