Patent ID: 6405062
Filing Date: 2002-06-11
Classification: G01R,H04W,Y02D

Abstract:
A battery level indicating apparatus for indicating a level of a battery, which powers a telephone having a communication mode and a standby mode, as one of a plurality of notification levels, the battery level indicating apparatus comprising:threshold information storing means for storing threshold information for specifying a notification level from a voltage of the battery during the standby mode; measuring means for measuring the voltage of the battery at intervals each equal to a first period to produce voltage measurements; correcting means for adding a correction value to each voltage measurement produced by the measuring means during the communication mode to convert the voltage measurements to values equivalent to voltage measurements produced during standby mode; average calculating means for calculating, at intervals each equal to a second period, an average for the voltage of the battery from a predetermined number of most recent voltage measurements produced by the measuring means, wherein voltage measurements produced during the standby mode are used without correction and voltage measurements produced during the communication mode are used having first been corrected by the correcting means; level determining means for determining, every time the average calculating means calculates the average, a notification level from the average in accordance with the threshold information; and indicating means for indicating the notification level determined by the level determining means to a user of the telephone.