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:
Feb. 14, 2012
Filed:
Dec. 15, 2008
Hanan Kupferman, Diamond Bar, CA (US);
Hanan Kupferman, Diamond Bar, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A disk drive is disclosed comprising a disk comprising a plurality of servo sectors defining a plurality of servo tracks, and a head actuated radially over the disk for generating a read signal. Each servo sector comprises a preamble comprising a first end and a second end, and each servo sector comprises a servo sync mark after the second end of the preamble. The servo tracks form a plurality of servo zones, wherein a servo data rate of the servo sectors in a first servo zone is different than a servo data rate of the servo sectors in a second servo zone. The first end of the preambles in the servo sectors are aligned along a radius of the disk across at least the first servo zone and the second servo zone.