{HEAD ~ A method} of controlling {TAIL ~ a display apparatus} using a camera based device and a mobile device, display apparatus, and system applying the same are provided 
of controlling
{ HEAD ~ A method } of controlling { TAIL ~ a display apparatus } using a camera based device and a mobile device , display apparatus , and system applying the same are provided
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH