Abstract: A charging control method of a computing system is provided. The method includes determining a charging mode for an external device connected to the computing system, charging the external device according to the charging mode, monitoring a current and a voltage in the computing system, and changing the charging mode based on the result of the monitoring.

Abstract: An electronic apparatus includes an input unit to receive an input of DC power from an external adaptor, a battery unit to store the received DC power, a first control unit to drive the electronic apparatus using power of the battery unit or power received from the input unit in a first operation mode, and to drive the electronic apparatus using both the power of the battery unit and the power input from the input unit in a second operation mode, and a power control unit to prevent a mode of the electronic apparatus from being changed to the second operation mode according to a state of the battery unit.

Abstract: An electronic apparatus includes an input unit to receive an input of DC power from an external adaptor, a battery unit to store the received DC power, a first control unit to drive the electronic apparatus using power of the battery unit or power received from the input unit in a first operation mode, and to drive the electronic apparatus using both the power of the battery unit and the power input from the input unit in a second operation mode, and a power control unit to prevent a mode of the electronic apparatus from being changed to the second operation mode according to a state of the battery unit.

Abstract: A charging control method of a computing system is provided. The method includes determining a charging mode for an external device connected to the computing system, charging the external device according to the charging mode, monitoring a current and a voltage in the computing system, and changing the charging mode based on the result of the monitoring.

Abstract: An electronic apparatus including a battery unit configured to include a battery and to supply power to elements of the electronic apparatus by using power stored in the battery; a power charger configured to, if power is input from an external adaptor, charge the battery with the input power; a user interface (UI) unit configured to display a charge state of the battery; and a power controller configured to, if the charge state of the battery satisfies a preset first condition, control the UI unit to display that the battery has been fully charged and control the power charger to charge the battery until the charge state of the battery satisfies a preset second condition.

Abstract: An electronic apparatus includes an input unit to receive a DC electric power from an adapter, a battery unit to store the received DC electric power therein, a first control unit to drive the electronic apparatus by using the electric power of the battery unit or the electric power received from the input unit in a first operation mode, and to drive the electronic apparatus by using both the electric power of the battery unit and the electric power received from the input unit in a second operation mode, and a comparing circuit unit to allow the first control unit to drive the electronic apparatus in a third operation mode having a power consumption lower than the first and second operation modes when the DC electric power input from the adapter is blocked.

Abstract: An electronic apparatus includes an input unit to receive an input of DC power from an external adaptor, a battery unit to store the received DC power, a first control unit to drive the electronic apparatus using power of the battery unit or power received from the input unit in a first operation mode, and to drive the electronic apparatus using both the power of the battery unit and the power input from the input unit in a second operation mode, and a power control unit to prevent a mode of the electronic apparatus from being changed to the second operation mode according to a state of the battery unit.

Abstract: A computer system and a power supplying method thereof in which noise due to switched power mode is reduced for a user's convenience. The computer system comprises a mode determiner to generate a mode signal comprising a predetermined part corresponding to one among a plurality of power modes; a power supply to supply power having a level of voltage corresponding to the mode signal to a central processing unit; and a mode controller to maintain or convert the predetermined part of the mode signal corresponding to one among the plurality of power modes to lower a difference in the level of voltage when the power mode is switched from a first level of voltage to a second level of voltage, wherein the second level of voltage is higher than the first level of voltage.

Abstract: An electronic device includes a system part having a plurality of electronic components; a system power supply outputting a system operating power by transforming electrical power supplied from the battery pack into the system operating power to operate the system part; a power selector outputting a system power selecting signal to turn the system part on/off according to an operation of a user; a micro control unit (MCU) controlling whether the system operating power of the system power supply is output; and an MCU power controller determining whether a control power to turn the MCU on is supplied by transforming electrical power supplied from the battery pack into the control power, based on the system power selecting signal transmitted from the power selector and controlling the MCU to be turned on/off.

Abstract: A computer system and a power supplying method thereof in which noise due to switched power mode is reduced for a user's convenience. The computer system comprises a mode determiner to generate a mode signal comprising a predetermined part corresponding to one among a plurality of power modes; a power supply to supply power having a level of voltage corresponding to the mode signal to a central processing unit; and a mode controller to maintain or convert the predetermined part of the mode signal corresponding to one among the plurality of power modes to lower a difference in the level of voltage when the power mode is switched from a first level of voltage to a second level of voltage, wherein the second level of voltage is higher than the first level of voltage.

Abstract: A portable computer having a first battery pack and a second battery pack supplying electric power, and a system power supply supplying the electric power from either of the first battery pack or the second battery pack as system driving power, includes a first switching part allowing the electric power from the first battery pack to the system power supply to be supplied and broken, a first switching control circuit part turning on/off the first switching part to supply and break the electric power for the system power supply, a battery sensor sensing whether or not the second battery pack supplies the electric power to the system power supply; and a battery state output circuit controlling the first switching control circuit part to turn off the first switching part when the battery sensor determines that the second battery pack supplies the electric power to the system power supply.

Abstract: An electronic device includes a system part having a plurality of electronic components; a system power supply outputting a system operating power by transforming electrical power supplied from the battery pack into the system operating power to operate the system part; a power selector outputting a system power selecting signal to turn the system part on/off according to an operation of a user; a micro control unit (MCU) controlling whether the system operating power of the system power supply is output; and an MCU power controller determining whether a control power to turn the MCU on is supplied by transforming electrical power supplied from the battery pack into the control power, based on the system power selecting signal transmitted from the power selector and controlling the MCU to be turned on/off.