Computer graphics processing and selective visual display system – Computer graphic processing system – Plural graphics processors
Patent
1996-08-15
1999-09-07
Chauhan, U.
Computer graphics processing and selective visual display system
Computer graphic processing system
Plural graphics processors
345521, 345512, 395670, G06F 1516
Patent
active
059494395
ABSTRACT:
A software queue located in an offscreen portion of video memory is used as a large-capacity software queue for queuing messages to a graphics accelerator. Although the software queue is typically stored in a dynamic RAM (DRAM) memory, advantages of faster static RAM (SRAM) are achieved by shadowing some of the queuing information in SRAM. Usage of a large-capacity software queue in video DRAM memory and information shadowing in faster SRAM memory achieves an advantageous balance between throughput speed and queue size. The large-capacity of the software queue ensures that the queue is virtually never filled to capacity so that delays while awaiting free space in the queue are virtually never incurred. The capacity of the software queue is determined in software and is therefore adaptable to match a particular graphics application.
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Ben-Yoseph Roey
Hsieh Paul
Smith Wade K.
Chauhan U.
Chromatic Research, Inc.
Koestner Ken J.
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