Apparatus for converting twenty-four bit color to fifteen bit co

Details Apparatus for converting twenty-four bit color to fifteen bit co Apparatus for converting twenty-four bit color to fifteen bit co

1991-12-23

1995-11-21

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

345202, 395131, G09G 504

Patent

active

054691907

ABSTRACT:
Apparatus for converting representations of color pixels in a twenty-four bit color format to representations in a fifteen bit color format including an individual circuit for data representing each component of a color, each of the individual circuits including apparatus for selectively incrementing the value the five highest order bits of a value representing a component of a color, apparatus responsive to a value of the lowest order bits of a value representing a component for providing a signal to cause the apparatus for selectively incrementing the five highest order bits, and apparatus for selectively enabling the apparatus responsive to a value of the lowest order bits depending on a desired pattern of pixels.

REFERENCES:
patent: 4752893 (1988-06-01), Guttag et al.
patent: 5003299 (1991-03-01), Batson et al.
patent: 5081450 (1992-01-01), Lucas et al.
patent: 5170152 (1992-12-01), Taylor
James D. Foley, "Fundamentals of Interactive Computer Graphics", pp. 600-601.

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