Patent ID: 6313832
Filing Date: 2001-11-06
Classification: G01R,H02J,H04M,H04W,Y02D

Abstract:
A remaining battery capacity display device for use in a communication device powered by a battery, comprising:voltage detection means for detecting a value of voltage of said battery;current consumption calculation means, coupled to said communication device, for calculating a battery current consumption based on a transmission output level of said communication device, received from said communication device, said current consumption calculation not being based on said value of voltage of said battery;remaining battery capacity calculation means, coupled to said voltage detection means and to said current calculation means, for calculating a remaining battery capacity based on said value of said voltage of said battery detected by said voltage detection means and said battery current consumption calculated by said current consumption calculation means;a display device; anddisplay control means, coupled to said remaining battery capacity calculation means to receive therefrom calculated remaining battery capacity and to said display device for causing said display device to carry out display operation according to said remaining battery capacity calculated by said remaining battery capacity calculation means,wherein said display control means includes:communicatable time period calculation means for calculating a communicatable time period over which said communication device is capable of communication, based on said remaining battery capacity calculated by said remaining battery capacity calculation means and said battery current consumption calculated by said current consumption calculation means, andcommunicatable time period display-instructing means for instructing said display device to display said communicatable time period calculated by said communicatable time period calculation means.