Method of processing traffic information and digital broadcast system
First Claim
Patent Images
1. A digital broadcast transmitter, comprising:
- a pre-processor pre-processing traffic information data including a traffic information message by encoding the traffic information data and by generating a traffic information data packet including the encoded traffic information data and known data;
a multiplexer multiplexing the traffic information data packet with one or more main audio and video (AV) data packets;
a trellis encoder having at least one memory and trellis-encoding the multiplexed data packets, the at least one memory being initialized by initialization data when data outputted from the multiplexer correspond to 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.
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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.
34 Citations
26 Claims
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1. A digital broadcast transmitter, comprising:
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a pre-processor pre-processing traffic information data including a traffic information message by encoding the traffic information data and by generating a traffic information data packet including the encoded traffic information data and known data; a multiplexer multiplexing the traffic information data packet with one or more main audio and video (AV) data packets; a trellis encoder having at least one memory and trellis-encoding the multiplexed data packets, the at least one memory being initialized by initialization data when data outputted from the multiplexer correspond to 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 (2, 3, 4, 5, 6, 7)
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8. A digital broadcast transmitter, comprising:
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a pre-processor pro-processing traffic information data including a traffic information message by encoding the traffic information data for at least one of error correction and error detection and by generating a traffic information data packet including the encoded traffic information data and known data; a multiplexer multiplexing the traffic information data packet with one or more main audio and video (AV) data packets; a post-processor post-processing the multiplexed data by encoding only traffic information data included in the multiplexed data with a coding rate of G/H, wherein G and H are positive integers and G is less than H; a data encoding and interleaving unit adding first parity data into the post-processed data and interleaving the post-processed data having the first parity data; a trellis encoder having at least one memory and trellis-encoding the interleaved data, the at least one memory being initialized by initialization data when data outputted from the data encoding and interleaving unit correspond to 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 (9, 10, 11, 12)
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13. A digital broadcast transmitter, comprising:
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a pre-processor pre-processing traffic information data including a traffic information message by encoding the traffic information data for at least one of error correction and error detection and by generating a traffic information data packet including the encoded traffic information data and known data; a multiplexer multiplexing the traffic information data packet with one or more main audio and video (AV) data packets; a data encoding and interleaving unit adding first parity data into the multiplexed data and interleaving the multiplexed data having the parity data; a post-processor post-processing the interleaved data by coding only traffic information data included in the interleaved data with a coding rate of G/H, wherein G and H are positive integers and G is less than H; a trellis encoder having at least one memory and trellis-encoding the post-processed data, the at least one memory being initialized by initialization data when data outputted from the post-processor correspond to 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 the transmitting the modulated data. - View Dependent Claims (14)
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15. A method of processing traffic information data in a digital broadcast transmitter, the method comprising:
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generating a traffic information message including a message identifier, traffic information, and location information identifying a traffic route associated with the traffic information; pre-processing traffic information data including the traffic information message by encoding the traffic information data and by generating a traffic information data packet including the encoded traffic information data and known data; multiplexing the traffic information 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 when data outputted from the multiplexer correspond to a beginning of a known data sequence. - View Dependent Claims (16, 17, 18)
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19. A method of processing traffic information data in a digital broadcast transmitter, the method comprising:
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generating a traffic information message including a message identifier, traffic information, and location information identifying a traffic route associated with the traffic information; pre-processing traffic information data including the traffic information message by encoding the traffic information data for at least one of error correction and error detection and by generating a traffic information data packet including the encoded traffic information data and known data; multiplexing the traffic information data packet with one or more main audio and video (AV) data packets in a multiplexer; post-processing the multiplexed data by coding only traffic information data included in the multiplexed data with a coding rate of G/H, wherein G and H are positive integers and G is less than H; adding parity data into the post-processed data and interleaving the post-processed data having the 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 when data outputted from the interleaver correspond to a beginning of a known data sequence. - View Dependent Claims (20)
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21. A method of processing traffic information data in a digital broadcast transmitter, the method comprising:
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generating a traffic information message including a message identifier, traffic information, and location information identifying a traffic route associated with the traffic information; pre-processing traffic information data including the traffic information message by encoding the traffic information data for at least one of error correction and error detection and by generating a traffic information data packet including the encoded traffic information data and known data; multiplexing the traffic information data packet with one or more main audio and video (AV) data packets; adding parity data into the multiplexed data and interleaving the multiplexed data having the parity data; post-processing the interleaved data in a post-processor, the post-processor coding only traffic information data included in the interleaved data with a coding rate of G/H, wherein G and H are positive integers and G is less than H; trellis-encoding the post-processed data in a trellis-encoder having at least one memory; and initializing the at least one memory when data outputted from the post-processor correspond to a beginning of a known data sequence.
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22. A method of processing traffic information data in a digital broadcast transmitter, the method comprising:
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generating a traffic information message; generating at least one system information table required for decoding the traffic information message; and multiplexing the traffic information message and the system information table. - View Dependent Claims (23, 24, 25)
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26. A method of processing traffic information data in a digital broadcast receiver, the method comprising:
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receiving a multiplexed traffic information message and a system information table from a digital broadcast transmitter, wherein the traffic information message and at least one system information table required for decoding the traffic information message being generated and multiplexed by the digital broadcast transmitter; and processing the received traffic information message, wherein the traffic information message includes a message identifier, traffic information and location information identifying at least one traffic route associated with the traffic information.
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Specification