| 摘要 |
PURPOSE: An apparatus for transmitting a digital broadcast signal is provided to find caption data in video data, thereby increasing convenience of a user. CONSTITUTION: A multiplexing unit multiplexes video data, audio data, and auxiliary data by MPEG-2 transport streams. An EIT(Event Information Table) or a PMT(Program Map Table) of the auxiliary data comprises a caption descriptor. The caption descriptor includes caption information. The video data includes MPEG-2 video data and user data. A transmitting unit modulates the multiplexed MPEG-2 transport streams into broadcast signals.
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