Categorized pixel variable buffering and processing for a graphi

Details Categorized pixel variable buffering and processing for a graphi Categorized pixel variable buffering and processing for a graphi

1992-09-11

1994-06-14

Shaw, Dale M.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

395122, 395162, 345201, G06F 1562

Patent

active

053218094

ABSTRACT:
A modified frame buffer and pixel variable read-modify-write method are described for a high performance computer graphics system. Pixel variables are initially classified as decision variables, intensity variables or decision/intensity variables. Only decision/intensity variables requiring a read-modify-write operation, are stored in dual interleaved DRAMs for improved bandwidth. Decision variables and intensity variables each utilize a single address/data bus per video RAM module in the frame buffer, while decision/intensity variables require dual address/data buses for accessing the interleaved memory banks. Enhanced bandwidth is obtained with a minimization of raster engine I/O requirements.

REFERENCES:
patent: 4435792 (1984-03-01), Bechtolsheim
patent: 4475104 (1984-10-01), Shen
patent: 4546451 (1985-10-01), Bruce
patent: 4602283 (1986-07-01), Corgnier et al.
patent: 4621320 (1986-11-01), Holste et al.
patent: 4679041 (1987-07-01), Fetter et al.
patent: 4924415 (1990-05-01), Winser
patent: 4924522 (1990-05-01), Bray et al.
patent: 4933909 (1990-06-01), Cushing et al.
patent: 4961153 (1990-10-01), Fredrickson et al.
patent: 4970499 (1990-11-01), Ryherd et al.
patent: 5005117 (1991-04-01), Ikumi
patent: 5008838 (1991-04-01), Kelleher et al.
patent: 5023838 (1991-06-01), Herbert
patent: 5043921 (1991-08-01), Gonzalez-Lopez et al.
patent: 5065368 (1991-11-01), Gupta et al.
"Improved Video RAM Read Transfer Cycle", L. Johnson and D. Kokoszka; IBM Technical Disclosure Bulletin, vol. 34, No. 1, Jun. 1991, pp. 479-480.

Affiliated with

Also associated with

Rating

Categorized pixel variable buffering and processing for a graphi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Categorized pixel variable buffering and processing for a graphi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Categorized pixel variable buffering and processing for a graphi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1255798