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. 08, 2014
Filed:
Jul. 24, 2012
Galvin T. Chia, Rancho Santa Margarita, CA (US);
Huanxiang Ruan, Irvine, CA (US);
Galvin T. Chia, Rancho Santa Margarita, CA (US);
Huanxiang Ruan, Irvine, 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 normal servo tracks each comprising a plurality of normal servo sectors storing head position information, and a fly height calibration servo track comprising fly height calibration servo sectors, each fly height calibration servo sector comprising head position information and a spacing pattern. After positioning the head over the fly height calibration servo track, the head is servoed over the fly height calibration servo track in response to the fly height calibration servo sectors. A dynamic fly height (DFH) setting is calibrated for the DFH actuator in response to the spacing pattern in the fly height calibration servo sectors. After calibrating the DFH setting, the control circuitry seeks the head to a data track defined by at least one of the normal servo tracks, and startup data is read from the data track.