1. A method for controlling a digital television (DTV) located in one independent space among a plurality of independent spaces physically separated from one another, the method comprising: receiving a broadcast signal from a management server; processing the received broadcast signal using a hospitality middleware platform embedded in the DTV; and outputting audio/video (A/V) data on the basis of the processed broadcast signal, wherein the hospitality middleware platform includes: a switching layer for switching a first layer for processing a broadcast signal based on a broadcast standard of a first region and a second layer for processing a broadcast signal based on a broadcast standard of a second region; a flexible Digital Rights Management (DRM) layer capable of being voluntarily modified; and a downloadable engine layer capable of voluntarily programming an interactive service application.