Arithmetic and logic processing unit for computer graphics syste

Details Arithmetic and logic processing unit for computer graphics syste Arithmetic and logic processing unit for computer graphics syste

1990-03-16

1993-02-09

Harkcom, Gary V.

395131, 395164, G06F 1562

Patent

active

051858568

ABSTRACT:
Pixel arithmetic and logical units for rendering pixels in graphics systems. Circuits for performing arithmetic operations on raster scan data are provided. The circuits comprise opcode registers for selecting an arithmetic function which transforms pixel value data corresponding to graphics primitives, multiplication circuits interfaced with the opcode registers for multiplying graphics operators with graphics data to obtain transform pixel value data, combining circuits interfaced with the multiplication circuits for adding transform pixel value data to existing pixel value data and processing circuitry interfaced with the combining circuitry for storing overflow data from the combining circuitry when adding transform pixel data overflows the combining circuitry.

REFERENCES:
patent: 4488258 (1984-12-01), Struger et al.
patent: 4727508 (1988-02-01), Williams
patent: 4916531 (1990-04-01), Genz et al.
patent: 4958302 (1990-09-01), Fredrickson et al.
patent: 5012163 (1991-04-01), Alcorn et al.

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