Multiple graphics pipeline integration with a windowing system t

Computer graphics processing and selective visual display system – Computer graphic processing system – Interface

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345502, G06F 1516, G06F 1314

Patent

active

059951214

ABSTRACT:
An improved method of incorporating a high performance graphics device into a base graphics subsystem of a processor includes two pairs of interface chips. One pair of interface chips is used to transfer pixel data between a base graphics system and the high performance graphics device, while the second pair of interface chips is used to transfer commands between the graphics device and the base graphics system. One of the pair of interface chips that is used to transfer pixel data is coupled to a bus within the base graphics subsystem while the second one of the pair is coupled to the graphics device. With such an arrangement, a high speed interface allows for pixel data to be fed directly to the frame buffer of the graphics subsystem, enabling the windows that are rendered by two different graphics systems to share a frame buffer memory.

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patent: 5790881 (1998-08-01), Nguyen
patent: 5821940 (1998-10-01), Morgan et al.
patent: 5821950 (1998-10-01), Rentschler et al.

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