Disk drive device and head positioning control method

Details Disk drive device and head positioning control method Disk drive device and head positioning control method

2008-10-02

2009-12-29

Nguyen, Hoa T (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077040, C360S077110

Reexamination Certificate

active

07639445

ABSTRACT:
According to one embodiment, a disk drive includes a detection signal producing module configured to produce a detection signal by reading each of the spiral servo patterns, the spiral servo patterns being read by a head while the head scans a circumferential direction region on the disk media. A position error computation module is configured to produce servo burst signals A, B, C, and D using a plurality of frames obtained by dividing the detection signal at even time intervals, at least one burst signal of the servo burst signals being produced using at least two frames in the frames, and to compute a position error of the head based on amplitude values of the produced burst signals.

REFERENCES:
patent: 4598327 (1986-07-01), Jen et al.
patent: 6965489 (2005-11-01), Lee et al.
patent: 6989954 (2006-01-01), Lee et al.
patent: 7016134 (2006-03-01), Agarwal et al.
patent: 7068459 (2006-06-01), Cloke et al.
patent: 7088533 (2006-08-01), Shepherd et al.
patent: 7113362 (2006-09-01), Lee et al.
patent: 7248426 (2007-07-01), Weerosooviya et al.
patent: 7330327 (2008-02-01), Chue et al.
patent: 7333280 (2008-02-01), Lifchits et al.
patent: 7499236 (2009-03-01), Lee et al.
patent: 2008/0151414 (2008-06-01), Matsunaga et al.
patent: 2003-217241 (2003-07-01), None

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