Method of processing traffic information and digital broadcast system
First Claim
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1. A digital broadcast transmitter, comprising:
- a pre-processor configured to pre-process traffic information data, wherein the traffic information data is included in a data group, the traffic information data generated from forming the data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data;
a multiplexer configured to multiplex the traffic information data with one or more main audio and video, AV, data;
a trellis encoder configured to have at least one memory and trellis-encode the multiplexed data, the at least one memory being initialized by the trellis initialization data when data outputted from the multiplexer correspond to a beginning of a sequence of the known data; and
a data transmission unit configured to insert synchronization data into the trellis-encoded data, modulate the trellis-encoded data having the synchronization data, and transmit the modulated data,wherein the traffic information data include status information, which includes at least one of information on an average speed of a traffic route and route travel time, and location information associated with 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
25 Claims
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1. A digital broadcast transmitter, comprising:
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a pre-processor configured to pre-process traffic information data, wherein the traffic information data is included in a data group, the traffic information data generated from forming the data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data; a multiplexer configured to multiplex the traffic information data with one or more main audio and video, AV, data; a trellis encoder configured to have at least one memory and trellis-encode the multiplexed data, the at least one memory being initialized by the trellis initialization data when data outputted from the multiplexer correspond to a beginning of a sequence of the known data; and a data transmission unit configured to insert synchronization data into the trellis-encoded data, modulate the trellis-encoded data having the synchronization data, and transmit the modulated data, wherein the traffic information data include status information, which includes at least one of information on an average speed of a traffic route and route travel time, and location information associated with 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 configured to pre-process traffic information data, wherein the traffic information data is included in a data group, the traffic information data generated from forming the data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data; a multiplexer configured to multiplex the traffic information data with one or more main audio and video, AV, data; a post-processor configured to pro-process 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 configured to add first parity data into the post-processed data and interleave the post-processed data having the first 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 by initialization data when data outputted from the data encoding and interleaving unit correspond to a beginning of a sequence of known data; and a data transmission unit configured to insert synchronization data into the trellis-encoded data, modulate the trellis-encoded data having the synchronization data, and transmit the modulated data, wherein the traffic information data include status information, which includes at least one of information on an average speed of a traffic route and route travel time, and location information associated with 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 configured to pre-process traffic information data, wherein the traffic information data is included in a data group, the traffic information data generated from forming the data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data; a multiplexer configured to multiplex the traffic information data with one or more main audio and video, AV, data-packets; a data encoding and interleaving unit configured to add first parity data into the multiplexed data and interleaving the multiplexed data having the parity data; a post-processor configured to post-process 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 configured to have at least one memory and trellis-encode the post-processed data, the at least one memory being initialized by the trellis initialization data when data outputted from the post-processor correspond to a beginning of a sequence of the known data; and a data transmission unit configured to insert synchronization data into the trellis-encoded data, modulate the trellis-encoded data having the synchronization data, and transmit the modulated data, wherein the traffic information data includes status information, which includes at least one of information on an average speed of a traffic route and route travel time, and location information associated with the status information. - View Dependent Claims (14)
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15. A method of processing traffic information data in a digital broadcast receiver, the method comprising:
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receiving traffic information data and system information, the traffic information data generated from forming a data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data, and trellis encoding the known data based on the trellis initialization data in a transmitter; demultiplexing the traffic information data and the system information; decoding the traffic information data using the system information, thereby extracting information on at least one of an average speed of a traffic route and route travel time, and location information associated with the status information; and providing a traffic information service to a user using the extracted information. - View Dependent Claims (16)
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17. A digital broadcast receiver, comprising:
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a demodulator configured to demodulate traffic information data information, the traffic information data generated from forming a data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data, and trellis encoding the known data based on the trellis initialization data in a transmitter; a data decoding unit configured to decode the demodulated traffic information data; a data storage configured to store the decoded traffic information data; and an application manager configured to provide a traffic information service to a user using the stored traffic information data by extracting information on at least one of an average speed of a traffic route and route travel time, and location information associated with the status information, wherein the demodulator comprises; an equalizer configured to channel-equalize the traffic information data based on the known data; a block decoder configured to perform soft decision decoding on the channel-equalized traffic information data; and a reed solomon frame decoder configured to perform an inverse process of a reed solomon frame encoder included in the transmitter.
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18. A digital broadcast receiver, comprising:
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a tuner configured to receive traffic information data, the traffic information data generated from forming a data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data, and trellis encoding the known data based on the trellis initialization data in the transmitter; a demodulator configured to perform demodulating on the traffic information data based on the known data; and a decoder configured to perform decoding on the demodulated traffic information data. - View Dependent Claims (19)
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20. A digital broadcast receiver, comprising:
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a tuner configured to receive enhanced data, the enhanced data generated from forming a data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data, and trellis encoding the known data based on the trellis initialization data in the transmitter; a demodulator configured to perform demodulating on the enhanced data based on the known data; and a decoder configured to perform decoding on the demodulated enhanced data. - View Dependent Claims (21)
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22. A method of processing digital broadcast data in a digital broadcast receiver, comprising:
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receiving traffic information data, the traffic information data generated from forming a data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data, and trellis encoding the known data based on the trellis initialization data in the transmitter; performing demodulating on the traffic information data based on the known data; and performing decoding on the demodulated traffic information data. - View Dependent Claims (23)
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24. A method of processing digital broadcast data in a digital broadcast receiver, comprising:
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receiving enhanced data, the enhanced data generated from forming a data group, the data group including known data in advance known to the receiver and a digital broadcast transmitter which is inserted continuously and periodically and trellis initialization data located in front of the known data, and trellis encoding the known data based on the trellis initialization data in the transmitter; performing demodulating on the enhanced data based on the known data; and performing decoding on the demodulated enhanced data. - View Dependent Claims (25)
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Specification