Patent ID: 6665806
Filing Date: 2003-12-16
Classification: G06F,Y02D

Abstract:
An information processing apparatus, comprising:a memory including a main memory block and a sub memory block; an AC/DC converter configured to convert an AC voltage to a DC voltage which is supplied to said memory; a built-in battery configured to supply a battery DC voltage which is supplied to said memory; a power source detection mechanism configured to detect whether said apparatus operates with said converted AC to DC voltage or said battery DC voltage and to generate a detection signal when detecting said battery DC voltage; and a selector configured to receive said detection signal from said power source detection mechanism, and to supply said converted AC to DC voltage or said battery DC voltage to said main memory block; and a switch configured to receive an output from said selector and to receive said detection signal, and further configured to supply said converted AC to DC voltage to said sub memory block and to shut off a supply of said battery DC voltage to said sub memory block upon receiving said detection signal.