Computer graphics processing and selective visual display system – Computer graphic processing system – Integrated circuit
Patent
1995-06-07
1999-07-13
Tung, Kee M.
Computer graphics processing and selective visual display system
Computer graphic processing system
Integrated circuit
345515, G06F 1206
Patent
active
059233400
ABSTRACT:
The graphics data processor of the present invention offers as a single instruction in its instruction set a draw and advance operation. A first data register stores a set of X and Y coordinates. In a first embodiment, a predetermined color code is stored at the pixel address of a bit mapped display memory indicated by the X and Y coordinates the first data register upon execution of the the draw and advance instruction. The X and Y coordinates stored in the first data register are then advanced by addition of X and Y coordinates stored in a second data register. A second embodiment is similar except that the color code stored at the X and Y coordinates of the first date register is recalled for combining with the predetermined color code and the combined result stored at that pixel location. The predetermined color code is preferrably stored in another data register. By proper selection of the X and Y coordinate data stored in the second data register either the X or the Y coordinate may be altered alone or both may by simultaneously changed. Provision of signed X and Y coordinate values in the second register enables either the X or Y coordinate to be incremented of decremented. This instruction serves to inhance the speed at which a line or computed curve may by drawn in the bit mapped display.
REFERENCES:
patent: 3471848 (1969-10-01), Manber
patent: 3952297 (1976-04-01), Stauffer et al.
patent: 4197590 (1980-04-01), Sukonick et al.
patent: 4320395 (1982-03-01), Meissen et al.
patent: 4613852 (1986-09-01), Maruko
patent: 4636783 (1987-01-01), Omachi
patent: 4649377 (1987-03-01), Urabe
patent: 4653020 (1987-03-01), Cheselka et al.
patent: 4680643 (1987-07-01), Horiguchi
patent: 4710767 (1987-12-01), Sciacero et al.
patent: 4761755 (1988-08-01), Ardini, Jr. et al.
patent: 4779210 (1988-10-01), Katsura et al.
patent: 4862150 (1989-08-01), Katsura et al.
patent: 5095301 (1992-03-01), Guttag et al.
patent: 5162784 (1992-11-01), Guttag et al.
patent: 5317333 (1994-05-01), Guttag et al.
patent: 5437011 (1995-07-01), Guttag et al.
Van Aken, Jerry, "An Efficient Ellipse-Drawing Algorithm", IEEE CG&A, 1984, pp. 24-35.
Guttag et al., "Video Display Processor", IEEE Translations on consumer electronics, vol. CE-27, Feb. 1981, pp. 27-34.
Guttag, Karl and John Hay, "Video Display Processor Simulates Three Dimensions", Electronics, Nov. 20, 1980, pp. 123-126.
NEC Electronics U.S.A. Inc., 1982 Catalog, Microcomputer Division, pp. 515-536, .mu.PD7220/GDC Graphics Display Controller.
Asal Michael D.
Guttag Karl M.
Novak Mark F.
Tebbutt Neil
Van Aken Jerry R.
Bassuk Lawrence J.
Donaldson Richard L.
Texas Instruments Incorporated
Tung Kee M.
LandOfFree
Process of processing graphics data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process of processing graphics data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of processing graphics data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2280609