Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1992-11-05
1996-01-09
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 87, G09G 336
Patent
active
054832551
ABSTRACT:
A display controller for a liquid crystal panel has a display data storage device for storing data on a state of a pixel as display data for each pixel, an identity
on-identity data storage device for storing data, as identity
on-identity discerning data, on whether a difference takes place between a pixel state to be displayed and a pixel state displayed for each pixel group, and an identification data storage device for storing data, as identification data, on whether a pixel is included whose state to be displayed differs from a state displayed for each scanning electrode group. The identification data storage device includes a data selecting part for deciding which scanning electrode group should be selected in a next scan, and a data erasing part for deciding whether the identity
on-identity data on a related pixel should be erased. These two parts change the storage contents to indicate a change in the display each time the state of a related pixel changes, and thereafter the data selecting storage part changes the storage content to indicate no change in the display when the related scanning electrode group is to be selected, and the data erasing part changes the storage content to be the same as in the data selecting part when the related scanning electrode group has been scanned.
REFERENCES:
patent: 4430648 (1984-02-01), Togashi
patent: 4714921 (1987-12-01), Kanno et al.
patent: 5034735 (1991-07-01), Inoue et al.
patent: 5111195 (1992-05-01), Fukuoka et al.
Japanese Unexamined Patent Publication No. 59389/1989.
Japanese Unexamined Patent Publication No. 298286/1988.
Conlin David G.
Fournier Kevin J.
Hjerpe Richard
Sharp Kabushiki Kaisha
Wu Xiao M.
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