Reverse images in a dot matrix LCD for an environmental...

Details Reverse images in a dot matrix LCD for an environmental... Reverse images in a dot matrix LCD for an environmental...

2006-05-23

2006-05-23

Chow, Dennis-Doon (Department: 2677)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S102000, C236S094000

Reexamination Certificate

active

07050026

ABSTRACT:
The present invention is a method for operating a backlighted dot matrix type LCD for displayed outputs from a programmable environmental control device, such as a programmable thermostat. The LCD is operated so that viewer elements of a displayed data item are non-opaque when a room where the LCD is located is darkened and the surrounding display elements are partially or completely opaque. Selected elements can also change from opaque to non-opaque to display an active condition.

REFERENCES:
patent: 4104627 (1978-08-01), Thuler
patent: 5347293 (1994-09-01), Wiedemann et al.
patent: 5646645 (1997-07-01), Saegusa
patent: 6484951 (2002-11-01), Mueller

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