Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1994-02-16
1997-02-04
Herndon, Heather R.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
395131, 395135, 395509, 345199, 345131, 345149, 345122, G06T 100
Patent
active
056007736
ABSTRACT:
Methods, systems and programs for partitioning an RGB gamma ramp frame buffer of a workstation into groupings of bit planes to isolate for independent generation the images of multiple objects displayed on a common video screen. According to a preferred practice, groups of bit planes are masked while others are written with scaled and off-set data suitable to represent shaded three-dimensional images. A matching partition of the color palettes in the digital to analog converters ensures consistency in the translation from digital frame buffer data to analog red-green-blue (RGB) color signals. The images as stored in the frame buffer can be arranged in any order of overlay priority. Retention of static image data in a partition reduces the graphics processor load by eliminating the need for regenerating the static component of a complex animation, thereby faciliting real-time motion or user interaction. Losses in color bandwidth resolution are substantially offset through the use of dithering techniques.
REFERENCES:
patent: 4783652 (1988-11-01), Lumelsky
patent: 4825388 (1989-04-01), Dailey et al.
patent: 4882683 (1989-11-01), Rupp et al.
patent: 4956638 (1990-09-01), Larky et al.
patent: 4965751 (1990-10-01), Thayer et al.
patent: 5029105 (1991-07-01), Coleman et al.
patent: 5083257 (1992-01-01), Kennedy
patent: 5163101 (1992-11-01), Deering
patent: 5179642 (1993-01-01), Komatsu
IBM Technical Disclosure Bulletin--Three-Buffer Display System For Realtime Animation vol. 3, No. 3 Aug. 1987.
IBM Technical Disclosure Bulletin--Video Subsystem Supporting Multiple Image Planes, Priority and Windowing. vol. 32, No. 4A Sep. 1989.
Vanover Michael T.
Vepstas Linas L.
Wilkinson Jeffrey A.
Feild Joseph H.
Herndon Heather R.
International Business Machines - Corporation
Salys Casimer K.
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