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:
Apr. 08, 2014
Filed:
Jun. 20, 2012
Heon Ho Chung, Laguna Niguel, CA (US);
Chun Sei Tsai, Tustin, CA (US);
Carl E. Barlow, Lake Forest, CA (US);
Kenneth J. Smith, Corona, CA (US);
Heon Ho Chung, Laguna Niguel, CA (US);
Chun Sei Tsai, Tustin, CA (US);
Carl E. Barlow, Lake Forest, CA (US);
Kenneth J. Smith, Corona, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A method to enable defect margining of a disk drive may comprise executing a data access command on a target sector on the disk drive. Upon encountering a data access error at the target sector, an address of the target sector may be added to an error list. The address of the target sector in the error list may then be converted to a physical location on the disk drive. A thermal asperity scan may be performed at and around the physical location and, upon detecting a thermal asperity, and at least sectors around the detected thermal asperity may be margined, and the data stored within the margined sectors may be relocated. Instead of sectors, entire tracks may be margined and the data stored therein relocated to a spare or reserve location, one track at a time.