Method and apparatus for servo control in a disk drive

Details Method and apparatus for servo control in a disk drive Method and apparatus for servo control in a disk drive

2007-12-25

2007-12-25

Wong, K. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

11412144

ABSTRACT:
According to one embodiment, in a disk drive which performs positioning control of a head on the basis of a servo burst pattern recorded on a disk medium, a servo processor generates a tangent-equivalent value by using a burst value obtained from the servo burst pattern. Furthermore, the servo processor executes an arctangent transform process by an inverse function approximate expression structured on the basis of a relationship between an off-track position and the tangent-equivalent value to detect the off-track position.

REFERENCES:
patent: 5717538 (1998-02-01), Cheung et al.
patent: 5867341 (1999-02-01), Volz et al.
patent: 6122117 (2000-09-01), Aikawa
patent: 6188484 (2001-02-01), Lee et al.
patent: 6535348 (2003-03-01), Kagami et al.
patent: 6738205 (2004-05-01), Moran et al.
patent: 7199956 (2007-04-01), Moser et al.
patent: 2003/0026016 (2003-02-01), Heydari et al.
patent: 0 942 413 (1999-09-01), None
patent: 04-16872 (1992-03-01), None
patent: 06-231552 (1994-08-01), None
patent: 2000-306348 (2000-11-01), None
Australian Search Report dated Feb. 7, 2007 for Singapore App. No. 200601944-2.

Affiliated with

Also associated with

Rating

Method and apparatus for servo control in a disk drive does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for servo control in a disk drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for servo control in a disk drive will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3880894