Patent ID: 6738649
Filing Date: 2004-05-18
Classification: G02F,G09G,H04M,H04W,Y02D

Abstract:
Portable terminal equipment comprising at least:displaying means provided with multiple-color light emitting elements used as a backlight for displaying information, a battery operating as an electrical power source, monitoring means for monitoring the amount of remaining power of said battery, driving means for driving said multiple-color light emitting elements, controlling means for generating and outputting a pulse for said light emitting elements to be driven by said driving means, wherein said controlling means, based on the result of monitoring in said monitoring means, generates and outputs a pulse for said light emitting elements to be driven by said driving means, wherein, when the result of monitoring in said monitoring means indicates that the amount of remaining power of said battery is lower than a predetermined level, said controlling means causes said driving means to drive a color light emitting element operable with lower power consumption of said multiple-color light emitting elements.