Patent ID: 6693851
Filing Date: 2004-02-17
Classification: G04C,G04G,H02J,Y02B,Y04S

Abstract:
An electronic device comprising:a chargeable power supply unit for supplying electrical energy; a driven unit; a mode switching unit for switching, based on a preset condition, an operating mode of said electronic device between a drive mode in which said driven unit is driven and a power-saving mode in which said driven unit is not driven; a control circuit operated by the electrical energy supplied from said power supply unit, for generating control signals to control elements in said electronic device; a drive unit operated by the electrical energy supplied from said power supply unit, for generating a drive signal in response to a part of said control signals under a condition in which said electronic device is in the drive mode; and an operation suspending unit, responsive to the mode switching unit switching the operating mode of the electronic device to a power-saving mode, for suspending operation of said control circuit when the amount of electrical energy stored in said power supply unit becomes smaller than a predetermined electrical energy amount.