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:
Jul. 01, 2014
Filed:
Apr. 24, 2012
Daniel L. Helmick, Broomfield, CO (US);
Donald Brunnett, Pleasanton, CA (US);
Aswartha Narayana, Aliso Viejo, CA (US);
Duc T. Phan, Saratoga, CA (US);
Daniel L. Helmick, Broomfield, CO (US);
Donald Brunnett, Pleasanton, CA (US);
Aswartha Narayana, Aliso Viejo, CA (US);
Duc T. Phan, Saratoga, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A disk drive is disclosed comprising a disk comprising a plurality of data tracks, a head, and control circuitry comprising a servo control system operable to actuate the head over the disk. When an access command is received to access a target data track, a seek operation is initiated to seek the head toward the target data track, wherein the seek operation includes integrating a first state of the servo control system and limiting an output range of the integrating. The output range of the integrating is increased during the seek operation, for example, if an error occurs during the seek operation.