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:
Oct. 09, 2012
Filed:
Dec. 08, 2008
Curtis E. Stevens, Irvine, CA (US);
Curtis E. Stevens, Irvine, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
'A disk drive is disclosed comprising a head actuated over a disk wherein a Native Command Queuing (NCQ) access command is received from a host. The NCQ access command comprises at least one logical block address (LBA) associated with a logical block, and a tag field for identifying the access command. The tag field is evaluated to determine a size of the logical block, and the logical block is transferred between the disk drive and the host. The logical block comprises user data and protection information for implementing end-to-end protection. The tag field comprises a tag number selected from a range of numbers, where the range of numbers comprise a first range of numbers for identifying a logical block comprising user data and protection information, and a second range of numbers for identifying a logical block comprising user data without protection information.'