Disk drive and method using native command queuing tags to identify logical block size and implement protection information
US8285923B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2008 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Oct 5, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.”
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.