Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1992-10-30
1994-11-22
Shaw, Dale M.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
395162, 345186, G06F 1562
Patent
active
053676327
ABSTRACT:
An implementation of a flexible memory controller for a graphics hardware system that supports flexible allocation of frame buffer resources. The buffer selection and steering to the channels of the modification logic are performed by a programmable controller. Furthermore, the controller is capable of performing pixel functions that require multiple frame buffer accesses per pixel. Still further, independent control is provided for read and write sequences. Also, separate control is provided for buffer selection and bus steering. This function is useful for controlling systems where the frame buffer resources are limited. The present invention allows for assigning various buffers alternate functions based on the application's requirements, and may vary on a per window basis.
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Bowen Andrew D.
Tannenbaum David C.
International Business Machines - Corporation
Shaw Dale M.
Tung Kee M.
Walker Mark S.
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