Method and apparatus for deriving instantaneous reciprocals of t

Details Method and apparatus for deriving instantaneous reciprocals of t Method and apparatus for deriving instantaneous reciprocals of t

1987-05-08

1993-01-12

Harkcom, Gary V.

Boots, shoes, and leggings

364761, 364764, G06F 752, G06F 1562

Patent

active

051796597

ABSTRACT:
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 apparatus also provides efficient circuitry for computing the value of 1/w of the homogenous coordinate w.

REFERENCES:
patent: 3508038 (1970-04-01), Goldschmidt et al.
patent: 4636973 (1987-01-01), Cantwell
patent: 4688186 (1987-08-01), Ferrell et al.
patent: 4718032 (1988-01-01), Irukulla et al.
Senzig, D. N. "High-Speed Division Algorithm", vol. 10, No. 5, Oct. 1967-pp. 572-575.
Flynn, M. S. "On Division by Functional Iteration", vol. C-19, No. 8, Aug. 1970, pp. 702-706.

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