Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1997-04-02
1999-10-12
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7714, 360 7308, 386 71, G11B 5584, G11B 15467
Patent
active
059662654
ABSTRACT:
An information signal reproducing apparatus for reproducing information signals from a recording medium on which several parallel tracks are formed, in which a tracking error signal is produced by use of signals reproduced by a head means for tracing the recording medium so as to reproduce signals, and the tracking error signal is sampled with periods which are determined, irrespective of a rotational period of a rotary head, so as to provide a tracking control signal. Further, upon reproduction of information signals from the recording medium on which plural kinds of pilot signal components are recorded at several parallel tracks together with the information signals, a first tracking error signal which is produced in accordance with the pilot signal components among signals reproduced by one of a plurality of heads for tracing the recording medium so as to reproduce signals, and a second tracking error signal which is produced by in accordance with the pilot signal components among signals reproduced by another of the plurality of heads, are selectively used.
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Arter et al, "Digital Slope Pointer for a Linear Track Servo in a Helical Scan Device", IBM Technical Disclosure Bulletin, vol. 19 No. 9 Feb. 1977, pp. 3297-3300.
Canon Kabushiki Kaisha
Habermehl James L.
Psitos Aristotelis M.
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