Computer graphics processing and selective visual display system – Display peripheral interface input device
Patent
1993-11-19
1996-08-06
Weldon, Ulysses
Computer graphics processing and selective visual display system
Display peripheral interface input device
345147, 345148, G09G 502
Patent
active
055438199
ABSTRACT:
A method and system for producing a finely textured display image of a gradation of high color resolution color shading. The high color resolution system is adapted to be coupled to a relatively inexpensive high speed active matrix display panel employing single-bit LCD drivers and a plurality of sub-pixel elements. The system includes a sub-pixel activation circuit for generating single-bit digital signals for driving individual ones of the sub-pixel elements. A duty cycle circuit arrangement controls the sub-pixel activation circuit to cause desired ones of the sub-pixel elements to be activated selectively an average number of times over a large number of consecutive frame time intervals to generate sub-pixel images having desired perceived color shading levels. A fixed pattern generator responsive to a desired color shading level signal, controls the duty cycle circuit arrangement to activate sub-pixel elements to the desired perceived color shading levels and assigns color codes to groups of sub-pixel elements to produce color blending sub-pixel patterns that help to inhibit substantially color contouring between adjacent sub-pixel element images exhibiting a plurality of different color shading levels of a single primary color. The high resolution display system also includes a video interface module for coupling either RGB analog signals or RGB digital signals to the high speed LCD display panel.
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Farwell Randall S.
Marshall Roger N.
Shaw Robert W.
Kleinke Bernard L.
Luu Matthew
Proxima Corporation
Weldon Ulysses
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