Head positioning control method for a storage device and...

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

Reexamination Certificate

active

06995944

ABSTRACT:
A head positioning method and device positions a head which reads disk-type storage medium at a specified location, and accurately estimates estimates a bias value during settling control. A disk device includes a disk medium, a head, an actuator , and a control circuit, settling control is performed based on a detected position after coarse control without integral compensation or bias compensation having been performed. The position of the head for a next sample is estimated, and an initial bias value is estimated from the difference between the detected position and the estimated position. This initial bias value is then used to perform settling control together with integral compensation of bias compensation. Since the accurate initial bias value at the start of settling is estimated, it is possible to reduce the time for correcting the shift in the bias during settling control, and greatly reduce the time required for settling control.

REFERENCES:
patent: 4894599 (1990-01-01), Ottesen et al.
patent: 5111124 (1992-05-01), Kurosawa
patent: 5126897 (1992-06-01), Ogawa et al.
patent: 5150266 (1992-09-01), Albert
patent: 5381282 (1995-01-01), Arai et al.
patent: 5680271 (1997-10-01), Yatsu
patent: 5859742 (1999-01-01), Takaishi
patent: 6166876 (2000-12-01), Liu
patent: 6429996 (2002-08-01), Iwashiro
patent: 2-265079 (1990-10-01), None
patent: 3-288913 (1991-12-01), None
patent: 5-165528 (1993-07-01), None
patent: 5-274040 (1993-10-01), None
patent: 06139729 (1994-05-01), None
patent: 7-57414 (1995-03-01), None
patent: 07192412 (1995-07-01), None
patent: 08255023 (1996-10-01), None
patent: 08329630 (1996-12-01), None
patent: 09139032 (1997-05-01), None
patent: 10125020 (1998-05-01), None
patent: WO99/44194 (1999-09-01), 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

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

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

Rate now

     

Profile ID: LFUS-PAI-O-3680249

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