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. 05, 2011
Filed:
Jul. 31, 2009
Chun Sei Tsai, Tustin, CA (US);
Sang Huynh, Corona, CA (US);
Anthony L. Pei, Irvine, CA (US);
Don Brunnett, Pleasanton, CA (US);
Jahangir John Kasraee, Irvine, CA (US);
Kent W. Gibbons, Trabuco Canyon, CA (US);
Chun Sei Tsai, Tustin, CA (US);
Sang Huynh, Corona, CA (US);
Anthony L. Pei, Irvine, CA (US);
Don Brunnett, Pleasanton, CA (US);
Jahangir John Kasraee, Irvine, CA (US);
Kent W. Gibbons, Trabuco Canyon, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A disk drive is disclosed comprising a disk comprising a plurality of tracks, and a head actuated over the disk. A plurality of refresh zones are defined, wherein each refresh zone corresponds to a plurality of the tracks. Data is written to a first refresh zone, and a first zone counter is updated for a second refresh zone at a first rate. Data is written to a third refresh zone, and the first zone counter is updated for the second refresh zone at a second rate different than the first rate.