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:
Dec. 30, 2014
Filed:
Sep. 25, 2012
Western Digital Technologies, Inc., Irvine, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A data storage device may comprise storage media comprising a plurality of sectors, and a controller configured to selectively read and write data thereto. The controller may be further configured to tag a sector as a bad sector to be relocated after a first failed read and to untag the tagged sector after a successful write attempt after the first failed read. After a second failed read from the sector subsequent to the successful write, the controller may tag the untagged sector as a bad sector to be relocated and adjust a recurring bad sector counter for that sector. On a subsequent write request, based at least in part on the bad sector counter and a threshold, the controller may determine whether to relocate data stored at a physical location on the data storage device corresponding to the sector to a spare location on the data storage device.