Time based data retention in a variable data rate disk drive
US5710943A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1995 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Jun 30, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1282
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and apparatus for assuring that the desired data is transferred between a variable rate disk drive and a host system during read and write operations. The invention involves retaining a variable amount of data in a buffer memory after the data has been transferred between the buffer memory and a magnetic disk with the variable amount of data retained based upon a predetermined fixed period of time associated with error conditions and a disk transfer rate. If an error condition is detected during a transfer of data between the buffer memory and the disk, all of the retained data may be retransferred after the error condition has been corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.