Information display device

Details Information display device Information display device

2006-08-08

2006-08-08

Chang, Kent (Department: 2673)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S212000

Reexamination Certificate

active

07088355

ABSTRACT:
A display device has a display element which maintains a displayed image without a supply of electrical power and a changing means for changing the displayed image using electrical power. A power supply provides electrical power to the changing means. Detecting means detects a level of voltage supplied by the power supply and a means, for controlling whether the displayed image is changed by the changing means, operates based upon a level of voltage detected by the detecting means.

REFERENCES:
patent: 4328490 (1982-05-01), Usuba et al.
patent: 5184117 (1993-02-01), Gauthier
patent: 6038515 (2000-03-01), Kikuchi et al.
patent: 6256742 (2001-07-01), Konaka et al.
patent: 6476590 (2002-11-01), Chou
patent: 09-090317 (1997-04-01), None

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