Patent ID: 8878775

Claim:
A display device, comprising: a display unit configured to display an object; a receiver configured to receive a wireless signal from a three dimensional (3D) pointing device sensing a three dimensional motion comprising a pointing point indicated by the three dimensional pointing device; and a controller configured to: calculate a trajectory of the 3D pointing device corresponding to at least one of an absolute coordinate area and a relative coordinate area based on the received wireless signal and determine a position of the displayed object according to a property of an area to which the trajectory belongs, calculate the trajectory based on a predetermined absolute reference point when the pointing point belongs to the absolute coordinate area, and the trajectory based on a relative position of the point when the pointing point belongs to the relative coordinate area, wherein the absolute coordinate area is within the display unit and the relative coordinate area is outside of the display unit which does not overlap the absolute coordinate area, change the position of the displayed object based on movements of the 3D pointing device when the 3D pointing device moves on the absolute coordinate area, stay the position of the displayed device moves on the relative coordinate area, and when the 3D pointing device re-enters into the absolute coordinate area from the relative coordinate area, change the position of the displayed object from the stayed position to the re-entered position.