Disk drive implementing data path protection without writing the error detection code data to the disk
US7647544B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2005 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Jan 23, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1833
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a disk, a buffer memory, and control circuitry operable to receive a write command from a host, wherein the write command comprises write data and a write data address. Write EDC data is generated in response to the write data and the write data address, wherein the write data and the write EDC data are stored in the buffer memory. The write data is read from the buffer memory, and write check data is generated in response to the write data and the write data address. The write EDC data is read from the buffer memory and compared to the write check data to detect a write error. If the write error is not detected, the write data is written to the disk without writing the write EDC data to the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.