Patent ID: 6812851
Filing Date: 2004-11-02
Classification: G06Q,G08G,G09F

Abstract:
A system for publicly display messages comprising:(a) an automotive vehicle having an automotive electrical system including an ignition system and a generator for generating electricity when the vehicles ignition system is on; and (b) the following elements carried by the vehicle: (1) a publicly visible electronic backlit display including one or more backlights; (2) video drive circuitry for generating signals to cause images to be shown on said display; and (3) display-power circuitry for receiving power from the vehicle's automotive electrical system and supplying that power to said one or more backlights, and for automatically reducing said power supplied to said one or more backlights after the vehicle's ignition is turned off and for turning said backlights off at a time after the ignition is shut off.