Scheduling multiple disk requests and writing data buffers to di

Details Scheduling multiple disk requests and writing data buffers to di Scheduling multiple disk requests and writing data buffers to di

1991-08-19

1996-02-27

Wong, Peter S.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358404, 358444, H04N 121, H04N 100, H04N 140

Patent

active

054953391

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.

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patent: 4719516 (1988-01-01), Nagashima
patent: 4748513 (1988-05-01), Yamada
patent: 4800521 (1992-01-01), Carter et al.
patent: 5021892 (1991-06-01), Kita et al.
patent: 5025483 (1991-06-01), Dinan et al.
patent: 5087979 (1992-02-01), Schaertel
patent: 5218456 (1993-06-01), Stegbauer et al.

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