METHOD OF PROCESSING TRAFFIC INFORMATION AND DIGITAL BROADCAST SYSTEM
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Abstract
A digital broadcast transmitting/receiving system and a method for processing data are disclosed. The method for processing data may enhance the receiving performance of the receiving system by performing additional coding and multiplexing processes on the traffic information data and transmitting the processed data. Thus, robustness is provided to the traffic information data, thereby enabling the data to respond strongly against the channel environment which is always under constant and vast change.
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Citations
52 Claims
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1-36. -36. (canceled)
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37. A digital broadcast transmitter, comprising:
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a pre-processor configured to pre-process enhanced data, wherein the pre-processor encodes the enhanced data for at least one of error correction and error detection and generates enhanced data packets including the encoded enhanced data; a multiplexer configured to multiplex the enhanced data packets with one or more main audio and video (AV) data packets; a first data randomizer configured to perform a first randomizing process only for data included in the main AV data packets among data in the multiplexed enhanced and main AV data packets; a data encoding unit configured to add first parity data for the enhanced data and second parity data for the data included in the main AV data packets; an interleaving unit configured to interleave data in the enhanced and main AV data packets having the first and second parity data; a trellis encoder configured to have at least one memory and trellis-encode the interleaved data, the at least one memory being initialized at a beginning of a known data sequence; and a data transmission unit inserting synchronization data into the trellis-encoded data, modulating the trellis-encoded data having the synchronization data, and transmitting the modulated data. - View Dependent Claims (38, 39)
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40. A method of processing enhanced data in a digital broadcast transmitter, the method comprising:
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pre-processing enhanced data, wherein the pre-processing comprises encoding the enhanced data for at least one of error correction and error detection and generating enhanced data packets including the encoded enhanced data; multiplexing the enhanced data packets with one or more main audio and video (AV) data packets in a multiplexer; performing a first randomizing process only for data included in the main AV data packets among data in the multiplexed enhanced and main AV data packets; adding first parity data for the enhanced data and second parity data for the data included in the main AV data packets; interleaving data in the enhanced and main AV data packets having the first and second parity data in an interleaver; trellis-encoding the interleaved data in a trellis-encoder having at least one memory; and initializing the at least one memory at a beginning of a known data sequence. - View Dependent Claims (41, 42)
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43. A digital broadcast transmitter, comprising:
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a pre-processor pre-processing enhanced data by encoding the enhanced data and by generating a enhanced data packet including the encoded enhanced data; a multiplexer multiplexing the enhanced data packet with one or more main audio and video (AV) data packets; and a trellis encoder having at least one memory and trellis-encoding the multiplexed data packets, the at least one memory being initialized at a beginning of a known data sequence. - View Dependent Claims (44, 45, 46, 47)
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48. A method of processing enhanced data in a digital broadcast transmitter, the method comprising:
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pre-processing enhanced data by encoding the enhanced data and by generating a enhanced data packet including the encoded enhanced data; multiplexing the enhanced data packet with one or more main audio and video (AV) data packets in a multiplexer; trellis-encoding the multiplexed data packets in a trellis-encoder having at least one memory; and initializing the at least one memory at a beginning of a known data sequence. - View Dependent Claims (49, 50, 51, 52)
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Specification