Method and apparatus for plotting pixels to approximate a straig

Details Method and apparatus for plotting pixels to approximate a straig Method and apparatus for plotting pixels to approximate a straig

1991-11-04

1993-11-23

Harkcom, Gary V.

395132, 395164, G06F 1562

Patent

active

052652106

ABSTRACT:
This method and apparatus are suitable for inclusion in the "graphics circuit board" of a personal computer. The digital output of the computer is used to plot a series of "pixel pairs" which, taken together, closely approximate the desired path of a line to be drawn on a display device such as a color cathode-ray tube. The addresses and relative intensities of the pixels of each pair and of the series are computed so as to produce a line that is substantially free from the "jaggies" resulting from "aliasing" in prior-art apparatus. Computation of addresses relies upon both integer and floating-point numbers.

REFERENCES:
patent: 4808988 (1989-02-01), Burke et al.
patent: 5067098 (1991-11-01), Moellering et al.
Fundamentals of Interactive Computer Graphics, Jan. 1982.
Computer Graphics, A Programming Approach 1987.

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