Abstract: A method of increasing the set-up speed of an Anynet device. The method includes initializing identifications (ID) of external devices coupled to a display device through a network; determining the type of each of the external devices, and allocating one of the IDs to each of the external devices according to the determined type; determining types of audio/video (A/V) signals currently output from external devices by using a defined communication protocol between the display device and the external devices; and defining external input relations between the display device and the external devices based on the determined types of currently output A/V signals.