Patent ID: 6437699
Filing Date: 2002-08-20
Classification: G01R,H02J,H04M,H04W,Y02D

Abstract:
A battery capacity indication circuit for generating and indicating information about a capacity of a battery supplying power to an electronic circuit, comprising:means for detecting and keeping an output value of the battery in a state where the electronic circuit is operated by power supplied from the battery; means for discriminating whether said electronic circuit is in a first operation state of consuming power smaller than a predetermined value or a second operation state of consuming power greater than the predetermined value in a state where the electronic circuit is operated by power supplied from the battery; means for comparing the output value of the battery detected in said second operation state with a predetermined threshold value if it is discriminated that said electronic circuit is in the second operation state; and means for generating and indicating information about the capacity of said battery on the basis of the output value of said battery detected and kept in said first operation state before said electronic circuit becomes in said second operation state, if it is determined that the output value of said battery is equal to or greater than the threshold value.