Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-10-10
2006-10-10
Nguyen, Hoa T. (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S078040
Reexamination Certificate
active
07119981
ABSTRACT:
An apparatus and method for tracking radially-dependent repeatable run-out in a disc drive having a servo loop for positioning a head over a rotating disc is provided. The disc includes multiple tracks. Radially-dependent repeatable run-out control components for at least a subset of the multiple tracks are first determined. Data representative of the radially-dependent repeatable run-out control components for the subset of the multiple tracks is then stored. The stored data representative of the radially-dependent repeatable run-out control components is retrieved before settling on the target track, and subsequently used to follow the selected track.
REFERENCES:
patent: 4087842 (1978-05-01), Manly
patent: 5550685 (1996-08-01), Drouin
patent: 5585976 (1996-12-01), Pham
patent: 5617388 (1997-04-01), Ishioka et al.
patent: 5825578 (1998-10-01), Shrinkle et al.
patent: 5886846 (1999-03-01), Pham et al.
patent: 5978169 (1999-11-01), Woods
patent: 5995316 (1999-11-01), Stich
patent: 6031683 (2000-02-01), Iverson et al.
patent: 6061200 (2000-05-01), Shepherd et al.
patent: 6141175 (2000-10-01), Nazarian et al.
patent: 6310742 (2001-10-01), Nazarian et al.
patent: 6377417 (2002-04-01), Ahn
patent: 6532129 (2003-03-01), Sri-Jayantha et al.
patent: 6587302 (2003-07-01), Ahn
patent: 6707635 (2004-03-01), Codilian et al.
patent: 6765747 (2004-07-01), Sun et al.
patent: 6859341 (2005-02-01), Min et al.
patent: 6867943 (2005-03-01), Harmer et al.
Hsin et. al., “Written-In Repeatable Run-Out Compensation in Embedded Servo Disc Drives,” Jun. 28, 2002.
Morris et al., “Compression and Storage of Written-In Error Compensation Tables in an Embedded Servo Disc Drive,” Feb. 12, 2001.
Zhang et al., “Real-Time Automatic Loop-Sharing for a Disc Drive Servo Control System,” Jun. 29, 2001.
Ellis Timothy F.
Hanson Reed D.
Morris John C.
Wilson Nathaniel B.
Habermehl James L.
Nguyen Hoa T.
Seagate Technology LLC
Westman Champlin & Kelly
LandOfFree
Method and apparatus for tracking radially-dependent... 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 tracking radially-dependent..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for tracking radially-dependent... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3694189