Patent ID: 9625996
Date: 2017-04-18
CPC Classifications: G06F,H04N

Claim:
1. An electronic device comprising: a display module; a camera configured to capture a user gesture; a projection module configured to project a virtual control object on a plane within a predetermined distance from the electronic device; and a controller configured to: display on the display module a screen of a video playback and a window for indicating an incoming call when the incoming call is received during the video playback, upon receiving a first user gesture through the camera, activate the projection module and identify a moving range of the first user gesture as a projection region on the plane through the camera, project first virtual control objects for controlling the incoming call in the projection region through the activated projection module at the time when the first user gesture is received, wherein the first virtual control objects include a first icon for a call connection, a second icon for sending a preset reply message, a third icon for writing messages and a fourth icon for terminating the call connection, upon receiving an input for selecting one of the first virtual control objects, change the projected first virtual control objects into second virtual control objects related to a next operation of the selected one and display the changed second virtual objects, wherein a display size of the second virtual objects is different from a display size of the first virtual objects, and upon receiving a second user gesture through the camera, deactivate the projection module and terminate projecting the second virtual control objects in the projection region.