Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1989-03-30
1990-12-11
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 75, 360 48, G11B 5596, G11B 5012
Patent
active
049774719
ABSTRACT:
A method for servo formatting disc media for a disc drive. The method includes (a) establishing a first timing decode pattern of transitions that precedes a first alignment pattern of transitions, that has a centerline substantially colinear with a centerline of the first alignment pattern and located at the boundary of one of a plurality of data tracks; (b) establishing a second timing decode pattern of transitions that precedes the data track and that has a centerline that is substantially colinear with the centerline of the data track; and (c) establishing a third timing decode pattern of transitions that precedes the second alignment pattern of transitions, and that has a centerline substantially colinear with the centerline of the second alignment pattern of transitions. The above method provides servo formatting for precisely detecting a read timing of the first and second alignment patterns.
REFERENCES:
patent: 4414589 (1983-11-01), Oliver et al.
patent: 4805051 (1989-02-01), De Marco et al.
patent: 4825310 (1989-04-01), Song
Fujitsu America, Inc.
Garland Steven R.
Psitos Aristotelis M.
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