Remote control device, display device, and remote control system including same

A display system comprising:

• a remote control device configured to receive, from an external device, identification information about the external device, recognize an angle of communication with the external device, and transmit the identification information and information about the angle to a display device;
• and
• the display device configured to identify the external device based on the identification information, determine an orientation state of the remote control device based on the information about the angle, and register the identified external device as an operable external device based on the remote control device being determined to have received the identification information while oriented toward the external device,
• wherein the remote control device further configured to:
• identify a direction of respective external devices about the remote control device based on communication angles with the external devices, and display a map UI indicating location information of the external devices based on the direction of the respective external devices about the remote control device, the map UI comprising an indicator indicating that the remote control device is oriented toward a first external device by overlapping with the map UI, and
• based on the first external device being disconnected from the remote control device and a second external device being newly connected to the remote control device according to the remote control device being moved while the first external device is connected to the remote control device, remove a first UI corresponding to the first external device from the map UI and display a second UI corresponding to the second external device on the map UI.