Method and apparatus for adaptive forward differencing in the re

Details Method and apparatus for adaptive forward differencing in the re Method and apparatus for adaptive forward differencing in the re

1989-11-08

1992-06-23

Harkcom, Gary V.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

395141, 340747, 382 47, G06F 314

Patent

active

051250730

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 present invention also provides efficient circuitry for computing the value of 1/w of the homogenous coordinate w.

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Burden, R. L., "Numerical Analysis", PWS Publishers, 1978, pp. 331-343.

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