Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1993-05-27
1995-02-28
Zimmerman, Mark K.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
395132, 345155, G06F 1562
Patent
active
053945182
ABSTRACT:
A custom palette comprises colors on a plurality of luminance levels consisting of colors of uniform luminance. The spacing in luminance between levels varies in relation to the luminance, the spacing between levels being closer at low luminance and increasing at greater luminance. The palette preferably includes a gray color from each luminance level, highly saturated colors at the vertices of every alternate level, and a selection of lower saturation colors encircling the gray color on each level. The selection of lower saturation colors preferably includes a higher concentration of flesh and sky colors.
REFERENCES:
patent: 4962419 (1990-10-01), Hibbard et al.
patent: 5008739 (1991-04-01), D'Luna et al.
patent: 5204665 (1993-04-01), Bollman et al.
patent: 5218350 (1993-06-01), Bollman
patent: 5233413 (1993-08-01), Fuchsberger
Digital Halftoning by Robert Ulichney, Second printing 1988; Chapters 1, 5, 6, and 7, The MIT Press.
Computer Graphics: Principles and Practice by Foley, van Dam, Feiner, and Hughes, Reprinted with corrections Nov., 1991; Chapter 13, Addison-Wesley Publishing Company.
Dithering for 12-Bit True-Color Graphics by Wells, Williamson and Carrie of Sun Microsystems; IEEE Computer Graphics & Applications, Sep. 1991, pp. 18-29.
Friedman Steven J.
Furse Gillian
Hargrove Karen A.
Joy Joseph M.
Myhrvold Nathan P.
Microsoft Corporation
Zimmerman Mark K.
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