Computer graphics processing and selective visual display system – Computer graphic processing system – Plural graphics processors
Patent
1995-07-05
1999-04-20
Tung, Kee M.
Computer graphics processing and selective visual display system
Computer graphic processing system
Plural graphics processors
345526, G06F 1300
Patent
active
058961402
ABSTRACT:
A method and apparatus for displaying graphics data and video data, such as a video window, on a computer display. A graphics adapter chip stores graphics pixel data in a graphics memory, and a video source stores video pixel data in a video memory. The graphics and video memories sequentially output blocks of pixel data to the display screen on output channels. Graphics data is selectively outputted on a number of graphics channels and video data is selectively outputted on the same number of video channels. The video channels are multiplexed with the graphics channels to form the output channels and either graphics data or video data can be output to the display on each output channel. A number of dummy video pixel values can be inserted before video data in the video memory to align video pixels between blocks of graphics data on the display screen. In one embodiment, a source selection element selects graphics and video channels by reading a window-type memory to determine which pixels on the screen are intended to display graphics data and which pixels are intended to display video data. The data on the output channels is converted to a form suitable for driving the display screen of the computer system.
REFERENCES:
patent: 4807189 (1989-02-01), Pinkham et al.
patent: 5097257 (1992-03-01), Clough et al.
patent: 5274753 (1993-12-01), Roskowski et al.
patent: 5345554 (1994-09-01), Lippincott et al.
patent: 5412399 (1995-05-01), Hara
patent: 5517612 (1996-05-01), Dwin et al.
patent: 5625379 (1997-04-01), Reineret et al.
IBM Technical Disclosure Bulletin, vol. 35, No. 1A, Jun. 1992, New York, US, pp. 107-109, XP000308792 "Video Pixel Multiplexer".
"Multiple Video Windows for Workstations," May 1994, The Computer Applications Journal, Issue #46, p. 12.
Sun Microsystems Inc.
Tung Kee M.
LandOfFree
Method and apparatus for simultaneously displaying graphics and does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for simultaneously displaying graphics and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for simultaneously displaying graphics and will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2251058