Remote control device and image display device having same

A remote control device comprising:

• a plurality of keys;
• an IR module configured to perform IR communication in response to a part of the plurality of keys;
• and
• an RF module configured to perform RF communication in response to another part of the plurality of keys,
• wherein the RF module transmits wireless channel information to an image display apparatus at a first interval before setting for remote control of a set-top box or an external device is completed, and transmits the wireless channel information at a second interval less than the first interval after the setting for remote control of the set-top box or the external device is completed,
• when a key corresponding to the RF communication among the plurality of keys operates, the RF module outputs a RF signal corresponding to the key based on the RF communication, and
• when a key corresponding to the IR communication among the plurality of keys operates, the IR module outputs an IR signal corresponding to the key based on the IR communication.

An image display apparatus comprising:

• a display;
• a signal processing device configured to output an image signal to the display;
• a remote control device;
• and
• an interface configured to perform communication with the remote control device,
• wherein the remote control device comprising:
• a plurality of keys;
• an IR module configured to perform IR communication in response to a part of the plurality of keys;
• and
• an RF module configured to perform RF communication in response to another part of the plurality of keys,
• wherein the RF module transmits wireless channel information to an image display apparatus at a first interval, and when pairing with the image display apparatus is not completed, transmits the wireless channel information at a second interval less than the first interval,
• wherein the interface performs wireless pairing with the remote control device based on the wireless channel information received during a first period between the first period and a second period following the first period.