Demodulating servo sectors and spiral tracks using common...

Details Demodulating servo sectors and spiral tracks using common... Demodulating servo sectors and spiral tracks using common...

2006-01-24

2006-01-24

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077070

Reexamination Certificate

active

06989954

ABSTRACT:
A method of manufacturing a disk drive by demodulating product servo sectors and spiral tracks written on a disk of the disk drive is disclosed. An external spiral servo writer writes a plurality of spiral tracks that spiral from an outer diameter to an inner diameter of the disk. Each spiral track comprises a high frequency signal interrupted at a predetermined interval by a sync mark. The spiral tracks are used to write product servo sectors to the disk during a fill operation. Common circuitry, such as burst demodulation circuitry, is used to demodulate the high frequency signal in the spiral tracks during the fill operation as well as demodulate the product servo sectors.

REFERENCES:
patent: 5576906 (1996-11-01), Fisher et al.
patent: 5602692 (1997-02-01), Freitas et al.
patent: 5668679 (1997-09-01), Swearingen et al.
patent: 5754352 (1998-05-01), Behrens et al.
patent: 6091564 (2000-07-01), Codilian et al.
patent: 6191906 (2001-02-01), Buch
patent: 6292318 (2001-09-01), Hayashi
patent: 6304407 (2001-10-01), Baker et al.
patent: 6411453 (2002-06-01), Chainer et al.
patent: 6429989 (2002-08-01), Schultz et al.
patent: 6507450 (2003-01-01), Elliott
patent: 6519107 (2003-02-01), Ehrlich et al.
patent: 6587293 (2003-07-01), Ding et al.

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