Sun Microsystems, Inc.

Vaughan R Pratt

Jerald R Evans

Serdar Ergene

Michael J Shantz

Sheue-Ling Lien

An adaptive forward differencing apparatus wherein, when rendering curves, calculated x, y values are increased or decreased in order to create values which correspond to the next pixel of the display CRT, such that curves of substantially one pixel increments are continuously and uniformly generated. The apparatus also provides circuitry for generating coordinates of display elements which approximate an ideal vector and to define curves, vectors or objects within maximum and minimum coordinates of the CRT display. The present invention also provides efficient circuitry for computing the value of 1/w of the homogenous coordinate w.

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Palo Alto, CA, United States of America

Vaughan R Pratt