Apparatus and method for dtv closed-captioning processing in broadcasting and communication system

The present invention relates to a DTV subtitle processing apparatus and method in a broadcast communication system, the editing is easy, fast processing speed, to provide a subtitle processing apparatus and method capable of increasing the search speed. Processing device according to one embodiment of the invention, part DTV caption extraction / generation interval and dividing device according to an inverse multiplexer for demultiplexing added by receiving the stream information and the video stream; Decoder for decoding by receiving the video stream; ST converter for receiving the PTS information extracted from the decoder to convert the time synchronization information; A storage unit for storing the demultiplexed additional information; Receiving the stored additional information analyzing unit for analyzing the CSD information; Trailer extractor for receiving the CSD analysis information and the decoded data from the decoder extracts the subtitle data; Subtitle file generation unit which generates a caption file by using the converted time synchronization information and the extracted caption data; Subtitle data processor receives a subtitle file the generated configure piecewise subtitle stream; Receiving the subtitle stream composed of the piecewise sections divided by sections constituting the stream; And storing comprising: receiving the piecewise subtitle stream composed of the keyword search to search section stream that corresponds to the keyword through a keyword search on the piecewise subtitle stream portion, generated by the subtitle file unit, the extracted caption data and it outputs a caption file by comparing the stored title data and symbols, and outputs a caption file by comparing the size of the screen and the length of the stored subtitle data. DTVCC, Closed-Caption, DTV subtitle, subtitle file, ATSC