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. 11, 2006
Filed:
Dec. 24, 2002
Gregory B. Thelin, Garden Grove, CA (US);
Gregory B. Thelin, Garden Grove, CA (US);
Western Digital Technologies, Inc., Lake Forest, CA (US);
Abstract
A disk drive is disclosed comprising a disk having a plurality of tracks each comprising a plurality of data sectors for storing a plurality of data blocks. A microprocessor initializes a write verify counter in a disk command data structure and executes a write command. The microprocessor executes a write verify operation to verify the recoverability of the data written to a plurality of target data sectors. If the write verify operation fails for a target data sector, the microprocessor updates the write verify counter in the disk command data structure and re-executes the write command and the write verify operation. If the write verify operation fails a number of times such that the write verify counter exceeds a threshold, the microprocessor relocates a data block from the failing target data sector to a spare data sector.