Head tracking servo pattern

Details Head tracking servo pattern Head tracking servo pattern

1993-05-11

1995-09-26

Envall, Jr., Roy N.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7780, 360 77120, G11B 558, G11B 5596

Patent

active

054538874

ABSTRACT:
A servo pattern arrangement for controlling the position of a head has a first pattern, in which two frequency signal having different frequencies are arranged alternately in the width direction of a track in a two-track cycle. The servo pattern arrangement also has a second pattern which is repeated in a cycle of n tracks. The first and the second patterns are arranged in the longitudinal direction of the tracks so as to create a servo pattern arrangement with a wide servo capture range and so as to also ensure accurate detection.

REFERENCES:
patent: 4048660 (1977-09-01), Dennison et al.
patent: 4390912 (1983-06-01), Hertrich et al.
patent: 4499511 (1985-02-01), Sugaya
patent: 4631606 (1986-12-01), Sugaya
patent: 4656538 (1987-04-01), Mattson
patent: 4656539 (1987-04-01), Sugiki et al.
patent: 4843493 (1989-06-01), Furuhata et al.
IBM TDB vol. 22, No. 12 "Quad-Burst Servo Pattern"Lin, May, 1980 Lin, pp. 5436-5438.
IBM TDB vol. 18, No. 10 "Track Following Servo System"Oswald, Mar., 1976, pp. 3424-3425.

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