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:
Nov. 27, 2012
Filed:
May. 18, 2010
Chun Sei Tsai, Tustin, CA (US);
Sang Huynh, Corona, CA (US);
Kenneth J. Smith, Corona, CA (US);
Carl E. Barlow, Lake Forest, CA (US);
Chun Sei Tsai, Tustin, CA (US);
Sang Huynh, Corona, CA (US);
Kenneth J. Smith, Corona, CA (US);
Carl E. Barlow, Lake Forest, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
Systems and methods for performing refresh operations using write/read commands are provided. In one embodiment, a disk drive comprises a disk partitioned into a plurality of refresh zones, a head configured to write data to and read data from the disk, and a controller. The controller is configured to receive an access command, to read data from at least one of the refresh zones using the head in response to the access command, to check a condition of the read data, and to determine whether to refresh the at least one refresh zone based on the condition of the read data, wherein the read data includes data from a portion of the at least one refresh zone not being accessed by the access command.