A display device, comprising: a broadcasting signal receiving unit (110, 211, 212) configured to receive a broadcasting signal of a channel; a broadcasting signal separation unit (120, 221, 222) configured to separate the broadcasting signal received through the broadcasting signal receiving unit into video, audio, and data signals; a controller configured to determine whether an Application Information Table, AIT, is included within the data signal, to determine that a data broadcasting is serviced on the channel if the AIT is included, and to determine a kind of service of the data broadcasting through analysis of an application signaling descriptor within the AIT, wherein the kind of service of the data broadcasting is described within a data service kind field of the application signaling descriptor within the AIT; a memory configured to store a first information corresponding to a channel on which the data broadcasting is serviced and a second information corresponding to the kind of service of the data broadcasting of the channel; and a display unit configured to display a data broadcasting information screen generated using the first and second information stored in the memory, wherein the data broadcasting information screen includes a channel on which the data broadcasting is serviced and an indicator corresponding to the kind of service of the data broadcasting, wherein the kind of service of the data broadcasting comprises one of news, weather information, stock information, traffic information, a broadcasting program guide and a game and is recorded in the data service kind field using a respective bit code. a broadcasting signal receiving unit (110, 211, 212) configured to receive a broadcasting signal of a channel; a broadcasting signal separation unit (120, 221, 222) configured to separate the broadcasting signal received through the broadcasting signal receiving unit into video, audio, and data signals; a controller configured to determine whether an Application Information Table, AIT, is included within the data signal, to determine that a data broadcasting is serviced on the channel if the AIT is included, and to determine a kind of service of the data broadcasting through analysis of an application signaling descriptor within the AIT, wherein the kind of service of the data broadcasting is described within a data service kind field of the application signaling descriptor within the AIT; a memory configured to store a first information corresponding to a channel on which the data broadcasting is serviced and a second information corresponding to the kind of service of the data broadcasting of the channel; and a display unit configured to display a data broadcasting information screen generated using the first and second information stored in the memory, wherein the data broadcasting information screen includes a channel on which the data broadcasting is serviced and an indicator corresponding to the kind of service of the data broadcasting, wherein the kind of service of the data broadcasting comprises one of news, weather information, stock information, traffic information, a broadcasting program guide and a game and is recorded in the data service kind field using a respective bit code.