Writing servo information to a disc drive at a constant density

Details Writing servo information to a disc drive at a constant density Writing servo information to a disc drive at a constant density

1997-12-22

2000-07-04

Loomis, Paul

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 2102

Patent

active

060847387

ABSTRACT:
An apparatus and associated method are disclosed for storing servo information on a rotatable disc of a disc drive at a frequency that varies for each track defined on the disc. A servo track writing system is provided which generates a fixed frequency pattern clock signal that indicates the appropriate angular locations on the disc at which the servo information is to be written, and a servo write clock signal having a selectively variable frequency at which the servo information is written. A reset pulse temporarily suspends and restarts the servo write clock signal so as to be in phase with the pattern clock signal at the initiation of the output of the servo information.

REFERENCES:
patent: 4016603 (1977-04-01), Ottesen
patent: 4799112 (1989-01-01), Bremmer et al.
patent: 5115358 (1992-05-01), Widney
patent: 5136439 (1992-08-01), Weispfenning et al.
patent: 5193034 (1993-03-01), Tsuyoshi et al.
patent: 5262907 (1993-11-01), Duffy et al.
patent: 5276662 (1994-01-01), Shaver, Jr. et al.
patent: 5422760 (1995-06-01), Abbott et al.
patent: 5436770 (1995-07-01), Muto et al.
patent: 5459757 (1995-10-01), Minuhin et al.
patent: 5583842 (1996-12-01), Wilson et al.
patent: 5592340 (1997-01-01), Minuhin et al.
patent: 5627843 (1997-05-01), Deng et al.
patent: 5631999 (1997-05-01), Dinsmore
Finch and Moczarny, "Headerless disk formatting: Making room for more date," Data Storage Magazine, Apr. 1997, pp. 51, 52, and 54, vol. 4, No. 5, Pennwell Publishing Co., Tulsa, Oklahoma.

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