Digital broadcast receiver and digital broadcast transmitter

A digital broadcast transmitter for transmitting a broadcast signal including real-time broadcast service and download broadcast service, the digital broadcast transmitter comprising:

• a video/audio encoding unit for encoding video/audio data for the real-time broadcast service;
• a real-time broadcast program information generating unit for generating real-time broadcast program information;
• a first multiplexing unit for multiplexing the video/audio data for the real-time broadcast service and the real-time broadcast program information;
• a content storage unit for storing video/audio data for the download broadcast service;
• a download broadcast content information generating unit for generating download broadcast content information;
• a second multiplexing unit for multiplexing the video/audio data for the download broadcast service and the download broadcast content information;
• a switching unit for selecting a signal from the first multiplexing unit and a signal from the second multiplexing unit;
• and
• a digital broadcast transmitting unit for modulating the signal selected by the switching unit and outputting the modulated signal,
• wherein the real-time broadcast program information generating unit converts the download broadcast content information from the download broadcast content information generating unit into the real-time broadcast program information,
• in conversion, the real-time broadcast program information generating unit converts a sender address into a channel number based on address map information of the download broadcast content information, and
• when a plurality of delivery dates and times is described in the download broadcast content information, the real-time broadcast program information generating unit converts one piece of the download broadcast content information into a plurality of pieces of the real-time broadcast program information,
• and the real-time broadcast program information generating unit synthesizes the converted real-time broadcast program information and the real-time broadcast program information.