Disk drive device and head positioning control method

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Disk drive device and head positioning control method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk drive device and head positioning control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk drive device and head positioning control method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4134211

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.