Patent ID: 8374180

Claim:
A method for controlling a digital television (DTV) located in one independent space among a plurality of independent spaces physically separated from one another, wherein the DTV is connected to a management server through a coaxial connection, the method comprising: receiving a Transport Stream (TS) packet from the management server, wherein a header of the TS packet includes at least one of identification (ID) information of the independent space, text data to be displayed, location information of the message file, and a display time period for which the text data is displayed; decoding the TS packet; extracting the message file using the location information of the message file, if the independent space ID information defined in the header of the TS packet is identical to pre-stored ID information of the independent space including the DTV; and storing the extracted message file; determining whether a current time reaches a target time at which the text data should be displayed using the display time period; and displaying the text data if the current time reaches the target time.