Power manager system for highway signage

Details Power manager system for highway signage Power manager system for highway signage

1996-01-25

2000-02-22

Wu, Xiao

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

345148, 345 82, G09G 500

Patent

active

060285974

ABSTRACT:
A power management system for the control and operation of distributed power has a controller operatively connected to a plurality of monitors, switches, control devices, and a visible light emitting array. The monitors, switches, and control devices provide the means for the controller to modulate the power to the visible light emitting array using a current modulator. The current modulator produces a variable power duty cycle that is received by the visible light emitting array. The visible light emitters of that array have a selected perceivable brightness. That brightness is held constant but power is conserved due to the controller modulating the power.

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