Image generation device and method using dithering

Details Image generation device and method using dithering Image generation device and method using dithering

1992-02-14

1998-07-07

Au, Amelia

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345138, G09G 536

Patent

active

057775990

ABSTRACT:
This invention relates to an improved image processing device which more rapidly provides an image that appears to have a greater resolution by using dithering to an output device having a lower resolution. An interpolator register cooperates with an input register. Dither values are loaded into the interpolator register and added to input data that has been loaded into the input register. The natural carry function of the adder performs any necessary incrementing, and an output register receives the sum, after truncation of as many bits as required to fit the dithered sum into the space available or usable by the display device.

REFERENCES:
patent: 3961134 (1976-06-01), Jarvis
patent: 5179641 (1993-01-01), Comins et al.
patent: 5294984 (1994-03-01), Mori et al.

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