Patent ID: 8483770

Claim:
A mobile terminal, comprising: a controller configured to execute an operation mode relating to one or more functions of the mobile terminal; a sensor configured to detect a motion of a pen unit by sensing ultrasonic waves generated by the pen unit; a display configured to display information; and a wireless communication unit configured to wirelessly communicate with at least one other mobile terminal, wherein the controller is further configured to compare the motion of the pen unit with a preset specific pattern, and to execute an operation corresponding to the specific pattern based on a result of the comparison, wherein the motions are motions on a region not connected to the mobile terminal, wherein the current operation mode is a first operation mode and the operation corresponding to the specific pattern is a second operation mode different than the first operation mode, wherein one of the first and second operation modes is a mobile terminal locking mode where some of input keys are in a deactivated state, wherein another of the first and second operation modes is one of a call transmission/reception mode, a message transmission/reception mode, a text or image input mode, a camera mode, a music or moving image reproduction mode, an image information editing mode, a web browsing mode, a standby screen display mode where a standby screen is displayed on a display of the mobile terminal, and a menu display mode where one or more selectable menus are displayed on the display, and wherein the sensor starts to detect the motion of the pen unit when one of the input keys is manipulated in the mobile terminal locking mode.