A method of an image display apparatus, the method comprising: receiving key code information of a remote controller (200; 201); transmitting, in response to receiving the key code information, a first signal to the remote controller, the transmitted first signal including information of available channels for a pairing channel; receiving a second signal from the remote controller, the received second signal including information of a selected channel from among the available channels; determining the selected channel as a pairing channel of the remote controller, characterized by determining the pairing channel of the remote controller as a pairing channel of shutter glasses, wherein determining the pairing channel of the shutter glasses comprises: transmitting a shutter glasses search signal; receiving at least one first response signal to the transmitted shutter glasses search signal; transmitting, in response to receiving the at least one first response signal, information of the pairing channel of the remote controller (200; 201); receiving, from the shutter glasses, at least one second response signal to the transmitted information of the pairing channel of the remote controller; and determining, in response to receiving the at least one second response signal, the pairing channel of the remote controller (200; 201) as the pairing channel of the shutter glasses. receiving key code information of a remote controller (200; 201); transmitting, in response to receiving the key code information, a first signal to the remote controller, the transmitted first signal including information of available channels for a pairing channel; receiving a second signal from the remote controller, the received second signal including information of a selected channel from among the available channels; determining the selected channel as a pairing channel of the remote controller, determining the pairing channel of the remote controller as a pairing channel of shutter glasses, wherein determining the pairing channel of the shutter glasses comprises: transmitting a shutter glasses search signal; receiving at least one first response signal to the transmitted shutter glasses search signal; transmitting, in response to receiving the at least one first response signal, information of the pairing channel of the remote controller (200; 201); receiving, from the shutter glasses, at least one second response signal to the transmitted information of the pairing channel of the remote controller; and determining, in response to receiving the at least one second response signal, the pairing channel of the remote controller (200; 201) as the pairing channel of the shutter glasses. transmitting a shutter glasses search signal; receiving at least one first response signal to the transmitted shutter glasses search signal; transmitting, in response to receiving the at least one first response signal, information of the pairing channel of the remote controller (200; 201); receiving, from the shutter glasses, at least one second response signal to the transmitted information of the pairing channel of the remote controller; and determining, in response to receiving the at least one second response signal, the pairing channel of the remote controller (200; 201) as the pairing channel of the shutter glasses.