Abstract: A method of controlling a mirror display and an electronic device are provided. The method includes identifying whether external power is input to the electronic device; and providing operation power to the mirror display by selectively providing one of the external power and battery power to the mirror display as the operating power according to whether the external power is input to the mirror display.

Abstract: A method of a relaying device for controlling electronic devices is provided. The method includes registering a first electronic device in the relaying device, receiving, from the first electronic device, first event information relating to a first event at the first electronic device, discovering a second electronic device, among at least one electronic device registered in the relaying device in advance, to perform the first event, controlling the first electronic device and the second electronic device to connect to each other, and controlling the second electronic device to perform the first event.

Abstract: An electronic device and a voice processing method of the electronic device are provided. The electronic device includes a microphone array including a plurality of microphones facing specified directions; a sensor module configured to sense a user located near the electronic device; and a processor configured to select one of a plurality of users sensed near the electronic device, process a voice received from a direction in which the selected user is located, as a user input, and process a voice received from another direction, as noise.

Abstract: A method of a relaying device for controlling electronic devices is provided. The method includes registering a first electronic device in the relaying device, receiving, from the first electronic device, first event information relating to a first event at the first electronic device, discovering a second electronic device, among at least one electronic device registered in the relaying device in advance, to perform the first event, controlling the first electronic device and the second electronic device to connect to each other, and controlling the second electronic device to perform the first event.

Abstract: A method of controlling a mirror display and an electronic device are provided. The method includes identifying whether external power is input to the electronic device; and providing operation power to the mirror display by selectively providing one of the external power and battery power to the mirror display as the operating power according to whether the external power is input to the mirror display.

Abstract: A key input device for data input means of a device is provided. The key input device includes a first terminal for outputting a key input signal, a second terminal spaced apart from the first terminal and having at least two divided parts, wherein all the divided parts contact the first terminal during a key input operation, at least one resistor allocated to each of the divided parts of the second terminal, connected in parallel to each other, and having respectively different resistance values, and a processor chip for controlling a corresponding key input operation according to respectively different voltage values outputted from the first terminal, by at least one corresponding resistor that is electrically and selectively connected to each of the divided parts.

Abstract: A method and an apparatus for controlling a sound volume in a mobile communication terminal are provided. The method of controlling the sound volume in the mobile communication terminal includes connecting a call to a counterpart mobile communication terminal, determining an output volume according to an identifier of the counterpart mobile communication terminal using pre-stored volume information per identifier, and adjusting and outputting a volume of a voice signal received from the counterpart mobile communication terminal according to the determined output volume.

Abstract: An apparatus and a method for changing a communication mode in a mobile terminal are provided. More particularly, an apparatus and a method for changing to a video communication mode using an external key while performing a voice communication mode, or changing a video communication mode to a voice communication mode using the external key in a mobile terminal are provided. The apparatus includes a communication mode manager. The communication mode manager maps a function for changing a communication mode to a communication connect button of an earphone, and enters a video communication mode using the communication connect button.

Abstract: A key input device for data input means of a device is provided. The key input device includes a first terminal for outputting a key input signal, a second terminal spaced apart from the first terminal and having at least two divided parts, wherein all the divided parts contact the first terminal during a key input operation, at least one resistor allocated to each of the divided parts of the second terminal, connected in parallel to each other, and having respectively different resistance values, and a processor chip for controlling a corresponding key input operation according to respectively different voltage values outputted from the first terminal, by at least one corresponding resistor that is electrically and selectively connected to each of the divided parts.