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:
Mar. 30, 2010
Filed:
May. 14, 2008
Lawrence M. Bryant, Palo Alto, CA (US);
Yakov M. Lifchits, San Jose, CA (US);
Siri S. Weerasooriya, Campbell, CA (US);
Lawrence M. Bryant, Palo Alto, CA (US);
Yakov M. Lifchits, San Jose, CA (US);
Siri S. Weerasooriya, Campbell, CA (US);
Western Digital Technologies, inc., Lake Forest, CA (US);
Abstract
A disk drive is disclosed comprising a disk, and a head actuated over the disk. The head is positioned at a radial location over the disk, and a servo burst is written at the current radial location. The servo burst is read to generate a read signal, and the read signal is processed to generate a position error signal (PES). The head is moved radially in response to the PES, and the process is repeated multiple times to form a spiral track spanning at least one revolution of the disk.