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:
May. 05, 2015
Filed:
Jun. 06, 2013
Western Digital Technologies, Inc., Irvine, CA (US);
Wei Xi, Mission Viejo, CA (US);
Jianguo Zhou, Foothill Ranch, CA (US);
Other;
Abstract
A disk drive is disclosed comprising a disk comprising a plurality of servo tracks defined by servo sectors, a head actuated over the disk, and control circuitry comprising a servo control system operable to servo the head over the disk. A plurality of data tracks are defined relative to the servo tracks, and a first data track is accessed while servoing the head over the first data track based on a position error signal X(k) generated at each servo sector of the first data track. Feed-forward compensation values are generated based on X(k), and a second, consecutive data track is accessed while servoing the head over the second data track based on a position error signal X(k) generated at each servo sector of the second data track and based on the feed-forward compensation values.