Dynamic magnetic information storage or retrieval – Modulating or demodulating
Reexamination Certificate
2006-01-10
2006-01-10
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
Modulating or demodulating
C360S069000
Reexamination Certificate
active
06985316
ABSTRACT:
The present invention is directed to a method and apparatus for performing seek operations in a disk drive having a disk surface with spiral servo information written thereon. In one embodiment, a disk surface is provided with a read head associated therewith. The disk surface has spiral servo information written thereon. The read head generates a read signal envelope when reading the spiral servo information. A plurality of integration windows is provided. The plurality of integration windows have a standard interval therebetween. A position error signal is generated based upon a location of a read signal envelope within an integration window. The interval between adjacent integration windows is adjusted from the standard interval to generate a position error signal. The read head is moved in a radial direction based upon the position error signal. This process may be repeated to seek across the disk surface.
REFERENCES:
patent: 5668679 (1997-09-01), Swearingen et al.
patent: 6144517 (2000-11-01), Watanabe et al.
patent: 6704156 (2004-03-01), Baker et al.
Liikanen Bruce
Ray Bill
VanLaanen John
Hansra Tejpal S.
Hudspeth David
Maxtor Corporation
Negron Daniell L.
LandOfFree
Method and apparatus for performing seek operations in a... 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 performing seek operations in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for performing seek operations in a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3591715