Scheduling multiple disk requests and writing data buffers to disk
US5495339A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1991 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Aug 19, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/32561
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic image processing apparatus comprising an electronic scanner and an electronic printer for forming an image, a controller for directing the operation of the image processing means, the controller including a mass memory device for storing data to be printed, random access memory, a printer control, and a Resource Manager for ensuring access to the random access memory for conveying data from the mass memory device to the printer via the random access memory, the Resource Manager including a mass memory device scheduler to provide printer access to the random access memory, the mass memory device scheduler having a reservation queue to reserve mass memory device access at predetermined times, delay means to determine that access to the mass memory device is invalid within a given time, and means to convey disk request operations to said reservation queue in order to provide guaranteed random access mernory at predetermined times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.