Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-05-30
1998-06-09
Wu, Xiao
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 94, 345 98, G09G 336
Patent
active
057642133
ABSTRACT:
A liquid crystal display apparatus includes an LCD having a plurality (N) of row electrodes and a plurality (M) of column electrodes which intersect to each other orthogonally. A plurality (n) of row electrodes of the plurality (N) of row electrodes are individually and simultaneously driven by a plurality (n) of row drivers with voltages which are determined according to Walsh functions. A VGA controller which receives a video signal outputs display data of one frame. A plurality (n) of storages individually store the display data of each of n rows which are simultaneously driven. The display data from respective storages are applied to a plurality (m) of calculation circuits. Respective calculation circuits calculate driving voltage values for respective column electrodes in accordance with the Walsh function and the display data so as to apply the same to a plurality (m) of column drivers, respectively. Respective column drivers drive the column electrodes included in each of a plurality (m) column electrode groups with the driving voltage values.
REFERENCES:
patent: 4795239 (1989-01-01), Yamashita et al.
patent: 5168270 (1992-12-01), Masumori et al.
patent: 5170158 (1992-12-01), Shinya
patent: 5481651 (1996-01-01), Herold
Iwasaki Shoji
Kobayashi Norimitsu
Tanaka Toshihiko
Sanyo Electric Co,. Ltd.
Tottori Sanyo Electric Co. Ltd.
Wu Xiao
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