Disk drive device and servo write method

Details Disk drive device and servo write method Disk drive device and servo write method

2008-10-09

2009-12-29

Nguyen, Hoa T (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S051000

Reexamination Certificate

active

07639446

ABSTRACT:
According to one embodiment, a servo write module is configured to write radial servo patterns on the disk media using a first spiral servo pattern of the spiral servo patterns as a base pattern for tracing, to detect a shift amount of a sync mark position in each of other spiral servo patterns with respect to a sync mark position in the first spiral servo pattern, and to adjust, when the base pattern is switched from the first spiral servo pattern to a second spiral servo pattern of the spiral servo patterns, a phase of the servo write clock based on the detected shift amount corresponding to the second spiral servo pattern.

REFERENCES:
patent: 5668679 (1997-09-01), Swearingen et al.
patent: 6324027 (2001-11-01), Chainer et al.
patent: 6674602 (2004-01-01), Miles
patent: 6965489 (2005-11-01), Lee et al.
patent: 7009802 (2006-03-01), Ehrlich
patent: 7158336 (2007-01-01), Chan et al.
patent: 7230789 (2007-06-01), Brunnett et al.
patent: 7251095 (2007-07-01), Rigney et al.
patent: 7253985 (2007-08-01), Gami et al.
patent: 7286317 (2007-10-01), Li et al.
patent: 7333280 (2008-02-01), Lifchits et al.
patent: 7391584 (2008-06-01), Sheh et al.
patent: 7411758 (2008-08-01), Cheung et al.
patent: 7499234 (2009-03-01), Rigney et al.
patent: 2007/0121235 (2007-05-01), Sai et al.
patent: 2007/0195445 (2007-08-01), Vanlaanen et al.
patent: 2007/0273996 (2007-11-01), Watt et al.
patent: 2008/0151412 (2008-06-01), Nakajima et al.

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