A:
Using your tv's remote is made possible via HDMI CEC. Now to confuse things each TV manufacturer calls HDMI CEC something different. LG's is called Simplink, Panasonic's is called EZ Sync, Sony Bravia's is Theatre Sync, and Samsung is Anynet.
To complicate things even further it seems most manufacturer's include very little information regarding usage of this feature. I have an LG bought in 2011 that came with Simplink. LG includes absolutely zero information about what it is or what it does.
My advise is to Google the model # of your TV along with the term HDMI CEC. Good luck!