The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2006
Filed:
Apr. 17, 2002
Robert W. Warren, Jr., Loveland, CO (US);
Mark D. Hagen, Rochester, MN (US);
Robert W. Warren, Jr., Loveland, CO (US);
Mark D. Hagen, Rochester, MN (US);
Western Digital Technologies, Inc., Lake Forest, CA (US);
Abstract
The present invention compensates for variations in the angular velocity of the drive's spindle motor by periodically dropping clocks to a counter based upon the previous servo wedge-to-wedge timing. This enables a substantially constant count to be maintained between servo wedges and allows a more predictable generation of the data sector pulses. A more predictable generation of the data sector pulses enables the size of the guard band preceding each data sector to be decreased and the capacity of the disk to be correspondingly increased.