A digital broadcast transmitter includes a first de-multiplexing unit for separating video/audio data and real-time broadcast program information from a transport stream when a digital broadcast signal carries the transport stream; a first storage unit for storing the real-time broadcast program information; a second de-multiplexing unit for separating video/audio data and download broadcast content information from a download broadcast signal when the digital broadcast signal carries the download broadcast signal; a second storage unit for storing the download broadcast content information; a program guide generating unit for converting the download broadcast content information stored in the second storage unit into the real-time broadcast program information, forming electronic program guide display data together with the real-time broadcast program information stored in the first storage unit, and outputting the formed data.