Abstract: A method and apparatus for detecting by a digitizer an application of an electronic pen on or within a predetermined distance from a screen of an electronic device, and includes compensating coordinates of an electronic pen relative to screen. At least one magnetic field is detected that is produced by the electronic pen and that has a different central axis each other The digitizer determines whether the electronic pen is inclined based on a number of detected magnetic fields. A determination is made whether to apply a compensation value for compensating coordinates of the electronic pen based on determining inclination of the electronic pen. The present invention advantageously permits exact recognition of coordinates of the electronic pen whether then pen is inclined or not by performing the coordinate compensation taking into account the inclination of the electronic pen and the inclined direction.

Abstract: A calibration apparatus of a portable terminal capable of performing calibration without disassembling a case of the portable terminal without a cable insertion hole in the case, and a system thereof are provided. The calibration system includes a calibration jig, including a cable coupler in which a Radio Frequency (RF) cable is inserted, for insertion in a user identification card slot unit of the portable terminal which connects a wireless path between an RF communication unit of the portable terminal and the calibration jig, and blocks a second wireless path between the RF communication unit and an antenna, a measuring device for connecting with the calibration jig through the RF cable, and for exchanging a wireless signal with the RF communication unit through the first wireless path, and a computer for connecting with the measuring device and the portable terminal, and for controlling a calibration procedure of the portable terminal.

Abstract: A method and apparatus for detecting by a digitizer an application of an electronic pen on or within a predetermined distance from a screen of an electronic device, and includes compensating coordinates of an electronic pen relative to screen. At least one magnetic field is detected that is produced by the electronic pen and that has a different central axis each other The digitizer determines whether the electronic pen is inclined based on a number of detected magnetic fields. A determination is made whether to apply a compensation value for compensating coordinates of the electronic pen based on determining inclination of the electronic pen. The present invention advantageously permits exact recognition of coordinates of the electronic pen whether then pen is inclined or not by performing the coordinate compensation taking into account the inclination of the electronic pen and the inclined direction.

Abstract: A calibration apparatus of a portable terminal capable of performing calibration without disassembling a case of the portable terminal without a cable insertion hole in the case, and a system thereof are provided. The calibration system includes a calibration jig, including a cable coupler in which a Radio Frequency (RF) cable is inserted, for insertion in a user identification card slot unit of the portable terminal which connects a wireless path between an RF communication unit of the portable terminal and the calibration jig, and blocks a second wireless path between the RF communication unit and an antenna, a measuring device for connecting with the calibration jig through the RF cable, and for exchanging a wireless signal with the RF communication unit through the first wireless path, and a computer for connecting with the measuring device and the portable terminal, and for controlling a calibration procedure of the portable terminal.

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.