Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data clocking
Reexamination Certificate
2005-07-19
2005-07-19
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data clocking
C360S077080
Reexamination Certificate
active
06920004
ABSTRACT:
The present invention may be embodied in a method for adjusting a servo sector detection delay time between detection windows in a disk drive. The disk drive includes a magnetic disk with a spiral track having contiguous storage segments. Each storage segment has a servo sector and a predetermined number of uniformly-sized data sectors. The storage segments are written at a relatively constant linear density along the spiral track. In the method, the magnetic disk is rotated at a constant angular velocity. A servo sector is detected. An adjustable delay time is provided for opening a window to detect a next servo sector. The window is opened after the adjustable delay time expires. A next servo sector is detected in the window. A time between the servo sector detections is measured and the adjustable delay time is adjusted based on the measured time.
REFERENCES:
patent: 4636885 (1987-01-01), Yamada et al.
patent: 4737869 (1988-04-01), Sugaya et al.
patent: 5119248 (1992-06-01), Bizjak et al.
patent: 5583712 (1996-12-01), Brunelle
patent: 5619387 (1997-04-01), Ottesen et al.
patent: 6081397 (2000-06-01), Belser
patent: 2001/0021075 (2001-09-01), Kitazaki et al.
Masud Mansuripur, Principles of Optical Disk Date Storage,Optical Sciences Center, University of Arizona, Tucson, AZ.
Codilian Raffi
Frank, Jr. Charles W.
Fawcett, Esq. Robroy R.
Hudspeth David
Kapadia Varsha A
Shara, Esq. Milad G.
Western Digital Technologies Inc.
LandOfFree
Method for adjusting a delay time for opening a servo sector... 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 for adjusting a delay time for opening a servo sector..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for adjusting a delay time for opening a servo sector... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3430132