Disk drive controller system
US5016121A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1988 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Feb 25, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive system includes a disk controller system having separate head positioning and data transfer subsystems and supporting up to four disk drives, two of which may be removable, portable drive units and two of which may connect through a standard ST506 interface. The removable disk drives incorporate a read and write protected data cylinder for storing information such as the maintenance history of the drive, and a read only cylinder for storing a unique serial number as well as other write protected data. The system also features a high capacity, high speed sector buffer which allows continuous transfers of data to or from noninterleaved sectors and supports concurrent disk and system accesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.