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:
Dec. 13, 2011
Filed:
Jun. 23, 2010
Min Chen, San Leandro, CA (US);
Qixing Zheng, Albany, CA (US);
James V. Wiseman, Palo Alto, CA (US);
Min Chen, San Leandro, CA (US);
Qixing Zheng, Albany, CA (US);
James V. Wiseman, Palo Alto, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of servo sectors that define a plurality of servo tracks. A position error signal (PES) is generated in response to the servo sectors, and a head velocity is estimated relative to the servo tracks. A correction value is generated as a function of the head velocity and the PES, and the PES is adjusted using the correction value to generate an adjusted PES. The head is positioned over the disk in response to the adjusted PES.