Patent ID: 9207863
Filing Date: 2015-12-08
Classification: G06F

Abstract:
1. A method of determining a symbol based on input applied to an input device including at least one key, the method comprising: identifying a plurality of input objects which enter a tracking area of the input device; receiving a plurality of key inputs by at least two input objects of the plurality of input objects; upon receiving the plurality of key inputs, detecting initial positions of the at least two input objects in the tracking area; tracking spatial movement of the at least two input objects respectively while at least one input object of the at least two input objects is moving in the tracking area; receiving a key input applied to one key of the at least one key by one input object of the at least two input objects; upon receiving the key input, identifying an identifier of the one input object based on the tracked spatial movement of the one input object among the at least two input objects; and determining a symbol from a plurality of symbols allocated in the one key which receives the key input based on relative position of the one input object among the at least two input objects at the time of receiving the plurality of key inputs by the at least two input objects.