Patent ID: 9182809
Filing Date: 2015-11-10
Classification: G06F

Abstract:
1. An electronic device comprising: a first battery used as a drive power source for driving the electronic device; a second battery used as the drive power source instead of the first battery when the first battery cannot be used; a battery removal detection unit that detects an event of removal of the first battery from the electronic device; a power control unit that changes the drive power source from the first battery to the second battery, and controls operation of the electronic device to reduce power consumption by the electronic device, when removal of the first battery is detected by the battery removal detection unit; and a timer that counts an elapsed time from when the drive power source changes from the first battery to the second battery, wherein the power control unit executes a shutdown process that turns electronic device power off when the second battery is used as the drive power source and the first battery has not been installed in the electronic device even though the elapsed time counted by the timer exceeds a specific time; wherein the power control unit asserts a power supply switch after passing of a first time threshold and executes a shutdown process that turns electronic device power off after passing of a second time threshold, the second time threshold being longer than the first time threshold, when the second battery is used as the drive power source and the first battery has not been installed in the electronic device even though the elapsed time counted by the timer exceeds the specific time.