Patent Number: 7,088,355

Title: Information display device

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.

Inventors: Ochi; Keizou (Takatsuki, JP)

Assignee: Minolta Co., Ltd.

International Classification: G09G 5/00 (20060101)

Expiration Date: 8/08/02018