Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1991-12-24
1993-12-28
Shaw, Dale M.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
395166, 345193, G06F 1520
Patent
active
052747603
ABSTRACT:
A graphics buffer (22) for storing information describing pixels that represent an image. The graphics buffer includes Surface Buffer Modules (32) that include a first memory (46) for storing pixel surface information, such as color, for a plurality of pixels. The Surface Buffer Modules, each further include a first processor (44) coupled to the first memory for modifying pixel information read therefrom and for storing said modified pixel information back into the first memory. The graphics buffer may also include at least one Control Buffer Module (34) that includes a second memory (46') for storing other pixel information, such as pixel flags, and a second processor (44') for modifying the other pixel information. A pixel bus (38) is coupled in common between the Surface Buffer Module and the at least one Control Buffer Module for conveying pixel-related information, including pixel data, pixel addresses, and the results of pixel tests, therebetween. Virtual Buffer Modules (36) are also coupled to the pixel bus for importing pixel data and addresses thereto and for exporting pixel data and addresses therefrom.
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International Business Machines - Corporation
Shaw Dale M.
Tung Kee M.
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