Method of processing traffic information and digital broadcast system
First Claim
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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, wherein the traffic information message includes status information, which includes information of current traffic congestion and/or predicted traffic congestion information, and location information corresponding to the status information.
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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
37 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, wherein the traffic information message includes status information, which includes information of current traffic congestion and/or predicted traffic congestion information, and location information corresponding to the status information. - 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 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;
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, wherein the traffic information message includes status information, which includes information of current traffic congestion and predicted traffic congestion information, and location information corresponding to the status information. - 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, wherein the traffic information message including status information, which includes information of current traffic congestion and predicted traffic congestion information, and location information corresponding to the status information. - 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 status information, which includes information of current traffic congestion and predicted traffic congestion information, and location information corresponding to the status 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 status information, which includes information of current traffic congestion and predicted traffic congestion information, and location information corresponding to the status 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 status information, which includes information of current traffic congestion and predicted traffic congestion information, and location information corresponding to the status 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 including status information, which includes information of current traffic congestion and predicted traffic congestion information, and location information corresponding to the status information;
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 digital broadcast transmitter, comprising:
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a traffic information message generator generating a traffic information message including status information, which includes information of current traffic congestion and predicted traffic congestion information, and location information corresponding to the status information;
a system information generator generating system information required for decoding the traffic information message; and
a multiplexer multiplexing the traffic information message and the system information. - View Dependent Claims (27, 28)
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29. A data structure, comprising:
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system information required for decoding a traffic information message including status information, which includes information of current traffic congestion and predicted traffic congestion information, and location information corresponding to the status information, the system information comprising a traffic information table, and wherein the traffic information table includes at least one of a traffic information application identifier, a service component identifier, and service information. - View Dependent Claims (30)
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31. A method of processing traffic information data in a digital broadcast receiver, the method comprising:
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receiving traffic information data including a traffic information message and system information;
demultiplexing the traffic information message and the system information from the traffic information data;
decoding the traffic information message using the system information, thereby extracting status information, which includes information of current congested traffic and predicted traffic congestion information, and location information corresponding to the status information; and
providing a traffic information service to a user using the decoded traffic information message. - View Dependent Claims (32)
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33. A digital broadcast receiver, comprising:
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a demodulator demodulating traffic information data including a traffic information message and system information and performing error correction to the demodulated data;
a data demultiplexing and decoding unit demuliplexing the traffic information message and system information from the error-corrected data and decoding the demultiplexed traffic information message using the system information;
a data storage storing the system information and the decoded traffic information message; and
an application manager providing a traffic information service to a user using the stored traffic information message by extracting status information, which includes information of current congested traffic and predicted traffic congestion information, and location information corresponding to the status information. - View Dependent Claims (34, 35, 36, 37)
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Specification