G - Physics – 09 – G
Patent
G - Physics
09
G
G09G 3/36 (2006.01) H04N 9/30 (2006.01)
Patent
CA 2075441
ABSTRACT OF THE DISCLOSURE A universal, stand-alone controller integrated circuit (IC) for high resolution, active matrix liquid crystal displays (AMLCD's) incorporating the following features: (1) serial to parallel conversion of the refresh data stream to support verti- cally split panels as well as multiple scan drives, (2) data re- ordering to support various color pixel/filter arrangements in- cluding delta-triad RGB and quad RGGB color filter mosaics, (3) two-dimensional anti-aliasing image processing, (4) color/gray- scale correction/compensation due to change in operating tempera- ture, and (5) host interface with programmable control registers to hold various display configurations and control parameters. With these features, the stand-alone AMLCD controller simplifies the graphics/display adapter design by providing a simple single- panel single-drive interface, similar to that of the CRT's but in digital format, to various types of the AMLCD's. It also reduces the functional and performance requirements of the AMLCD panel driver IC's by integrating pixel data rearrangement otherwise im- plemented in the driver IC's, hence allowing more line drivers to be integrated within a smaller driver chip. The controller of the invention establishes a universal, standard interface between the host system and AMLCD's of various panel technologies, resolutions, and different timing requirements.
Bruce Richard
Lee David D.
Lewis Alan G.
Sim & Mcburney
Xerox Corporation
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