Rapid line drawing in computer graphics employing floating-point

Details Rapid line drawing in computer graphics employing floating-point Rapid line drawing in computer graphics employing floating-point

1993-03-30

1994-12-20

Jankus, Almis

395128, 395131, 395133, G06F 1562

Patent

active

053751965

ABSTRACT:
Three terms (X,Y,"Error") are combined in a single floating-point number in an advanced microprocessor to compute pixel addresses. The floating-point number is reconverted to integer form in multiplexers operating in a mode determined by slope, relative to unity, of the line to be defined by the pixels. The output of the multiplexers is enhanced by a look-up table to produce color data, which are converted to analog form for display. Speed of operation is greatly augmented by the use of floating-point arithmetic to compute the pixel addresses.

REFERENCES:
patent: 4878182 (1989-10-01), Aranda et al.
patent: 4924415 (1990-05-01), Winser
patent: 5185599 (1993-02-01), Doornink et al.

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