Multi-drive controller with encoder circuitry that generates ECC check bytes using the finite field for optical data for appending to data flowing to HDA
US5661848A · kind A · utility
Inventors
Key dates
| Filing date | Sep 8, 1994 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Sep 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multiple-drive data-storage system includes a multiple-drive controller, a fixed-media disk drive, and a removable-media, optical-disk disk drive. Preferably, the controller is defined on a printed circuit board assembly attached to a head disk assembly containing the fixed media, and includes a host interface and a command decoder for receiving and decoding commands. A shared buffer memory has allocated storage space for data read from the fixed-media and from the removable optical disks. An error corrector corrects data errors including errors in address-defining data retrieved from headers in the removable optical disks. Caching of data read from the optical disks onto the fixed media allows high speed operation of the combined system and reduced blocking of the host I/O bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.