Graphics system with color space double buffering

Details Graphics system with color space double buffering Graphics system with color space double buffering

1995-03-24

1998-04-21

Tung, Kee M.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

395509, 395519, 345189, 345199, G06F 1516

Patent

active

057427968

ABSTRACT:
A graphics subsystem which permits single buffered windows to exist in a double buffered system. Thus ALL the pixels on the screen are ultimately double buffered, but the single buffered should not appear to be double buffered. To support the single buffered windows, certain write operations are modified to write the same half-word of data into both the front and back half-words of an addressed location. This permits non-double buffered windows to remain correct when the RAMDAC.TM. is manipulated to swap buffers.

REFERENCES:
patent: 5299309 (1994-03-01), Kuo et al.
patent: 5392391 (1995-02-01), Caulk, Jr. et al.
patent: 5519825 (1996-05-01), Naughton et al.
patent: 5543824 (1996-08-01), Priem et al.
IEEE Micro, "Developing the GX Graphics Accelerator Architecture", by C.R. Priem, Feb. 1990, pp. 44-54.

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