Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-06-27
2006-06-27
Wong, K. (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S051000, C360S077070
Reexamination Certificate
active
07068459
ABSTRACT:
A method and apparatus is disclosed for writing product servo sectors to a disk of a disk drive to define a plurality of data tracks. The disk drive comprises the disk and a head actuated over the disk. The disk comprises a plurality of spiral tracks which are read using the head to synchronize a write clock and to generate a position error signal (PES) according to a PES algorithm used to maintain the head along a first servo track while writing product servo sectors along the first servo track. The PES algorithm is adjusted to seek the head to a second servo track, and the head is used to write product servo sectors along the second servo track.
REFERENCES:
patent: 4945427 (1990-07-01), Cunningham
patent: 5576906 (1996-11-01), Fisher et al.
patent: 5668679 (1997-09-01), Swearingen et al.
patent: 5940237 (1999-08-01), Takagi
patent: 6040955 (2000-03-01), Brown et al.
patent: 6411453 (2002-06-01), Chainer et al.
patent: 6429989 (2002-08-01), Schultz et al.
patent: 6493176 (2002-12-01), Deng et al.
patent: 6507450 (2003-01-01), Elliott
patent: 6519107 (2003-02-01), Ehrlich et al.
patent: 6587293 (2003-07-01), Ding et al.
patent: 6704156 (2004-03-01), Baker et al.
patent: 6738205 (2004-05-01), Moran et al.
patent: 6765737 (2004-07-01), Lim et al.
patent: 6965489 (2005-11-01), Lee et al.
patent: 6977789 (2005-12-01), Cloke
patent: 6987636 (2006-01-01), Chue et al.
Cloke Robert L.
Lee Tehri S.
Sheh Edgar D.
Weerasooriya Siri S.
Ying Wing
Sheerin, Esq. Howard H.
Western Digital Technologies Inc.
Wong K.
LandOfFree
Adjusting track density by changing PES algorithm when servo... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjusting track density by changing PES algorithm when servo..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjusting track density by changing PES algorithm when servo... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3706302