A remote controller comprising: a transmitter configured to transmit a transmitting signal for receiving at least one reflective signal from at least one reflection pattern, wherein the respective reflection pattern outputs reflective signals corresponding to the respective reflective signal using the transmitting signal, and wherein the reflective signal includes at least one of device type information, manufacturer information, device model name information, device status information, and information related to a device control command; a receiver configured to receive a first reflective signal from a first reflection pattern; an image projector configured to project an image outward; an input unit provided with a plurality of buttons; and a controller configured to recognize or identify a first device corresponding to the first reflection pattern based on the first reflective signal, to perform a control operation to enter a remote control mode for a first device corresponding to the first reflection pattern based on the first reflective signal from the first reflection pattern and to perform a control operation to project a remote control window for remote control of the first device outward through the image projector, wherein when a first item in the remote control window is selected, the controller is configured to perform a control operation to output a first remote control signal corresponding to the first item, wherein in the remote control mode for the first device, the controller is configured to match at least one of the a plurality of buttons with a control command for remote control of the first device, wherein the transmitting signal is an IR signal-based transmitting signal, and wherein the first remote control signal is an RF-based remote control signal. a transmitter configured to transmit a transmitting signal for receiving at least one reflective signal from at least one reflection pattern, wherein the respective reflection pattern outputs reflective signals corresponding to the respective reflective signal using the transmitting signal, and wherein the reflective signal includes at least one of device type information, manufacturer information, device model name information, device status information, and information related to a device control command; a receiver configured to receive a first reflective signal from a first reflection pattern; an image projector configured to project an image outward; an input unit provided with a plurality of buttons; and a controller configured to recognize or identify a first device corresponding to the first reflection pattern based on the first reflective signal, to perform a control operation to enter a remote control mode for a first device corresponding to the first reflection pattern based on the first reflective signal from the first reflection pattern and to perform a control operation to project a remote control window for remote control of the first device outward through the image projector, wherein when a first item in the remote control window is selected, the controller is configured to perform a control operation to output a first remote control signal corresponding to the first item, wherein in the remote control mode for the first device, the controller is configured to match at least one of the a plurality of buttons with a control command for remote control of the first device, wherein the transmitting signal is an IR signal-based transmitting signal, and wherein the first remote control signal is an RF-based remote control signal.