Disk bandwidth allocations to prioritize disk requests
US5218456A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1991 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Jul 22, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic image processing apparatus having image processing resources including a controller for directing the operation of the image processing resources, the controller including a disk memory, the method of controlling mass memory device bandwidth access during an access time window including guaranteeing access to the memory for predetermined time periods for a first set of image processing resources during each access time window, a second set of image processing resources having access subordinate to the first set of image processing resources, maintaining a record of mass memory device access for the first set of image processing resources during each access time window, receiving a memory access request from the first set of image processing resources, determining that said resource utilization does not exceed the predetermined time period, and allowing current access to the mass memory device by the image processing resource. The second set of image processing resources achieves access upon determination that none of the first set of resources is requesting access or upon determination that each of the first set of resources has exceeded the predetermined time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.