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 enhanced data by encoding the enhanced data, wherein the pre-processor further comprises all of a frame encoder, a group formatter and a packet formatter;
a first multiplexer configured to multiplex packets having the pre-processed enhanced data with main audio and video (AV) data packets;
a trellis encoder configured to have at least one memory and trellis-encode the multiplexed data packets, the at least one memory being initialized at a beginning of a known data sequence;
a second multiplexer configured to multiplex field synchronization data and segment synchronization data with the trellis-encoded data;
a modulator configured to modulate the multiplexed data; and
a RF up converter configured to transmit 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.
28 Citations
11 Claims
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1. A digital broadcast transmitter, comprising:
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a pre-processor configured to pre-process enhanced data by encoding the enhanced data, wherein the pre-processor further comprises all of a frame encoder, a group formatter and a packet formatter; a first multiplexer configured to multiplex packets having the pre-processed enhanced data with main audio and video (AV) data packets; a trellis encoder configured to have at least one memory and trellis-encode the multiplexed data packets, the at least one memory being initialized at a beginning of a known data sequence; a second multiplexer configured to multiplex field synchronization data and segment synchronization data with the trellis-encoded data; a modulator configured to modulate the multiplexed data; and a RF up converter configured to transmit the modulated data. - View Dependent Claims (2, 3, 4, 5)
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6. A digital broadcast transmitter, comprising:
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a pre-processor configured to pre-process enhanced data by encoding the enhanced data for at least one of error correction and error detection and by generating an enhanced data packet including the encoded enhanced data and known data, wherein the pre-processor further comprises all of a frame encoder, a group formatter and a packet formatter; a first multiplexer configured to multiplex the enhanced data packet with one or more main audio and video (AV) data packets; a post-processor configured to post-process the multiplexed data by encoding only enhanced 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 known data sequence; a second multiplexer configured to multiplex field synchronization data and segment synchronization data with the trellis-encoded data; a modulator configured to modulate the multiplexed data; and a RF up converter configured to transmit the modulated data. - View Dependent Claims (7, 8, 9)
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10. A digital broadcast transmitter, comprising:
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a pre-processor configured to pre-process enhanced data by encoding the enhanced data for at least one of error correction and error detection and by generating an enhanced data packet including the encoded enhanced data and known data, wherein the pre-processor further comprises all of a frame encoder, a group formatter and a packet formatter; a first multiplexer configured to multiplex the enhanced data packet 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 interleave the multiplexed data having the parity data; a post-processor configured to post-process the interleaved data by coding only enhanced 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 initialization data when data outputted from the post-processor correspond to a beginning of a known data sequence; a second multiplexer configured to multiplex field synchronization data and segment synchronization data with the trellis-encoded data; a modulator configured to modulate the multiplexed data; and a RF up converter configured to transmit the modulated data. - View Dependent Claims (11)
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Specification