VSB communication system
First Claim
1. A digital television (DTV) receiver comprising:
- a demodulator demodulating a digital television (DTV) signal containing first service data multiplexed with second service data;
a signaling information detector detecting signaling information from the demodulated DTV signal; and
a block decoder decoding the first and second service data in the demodulated DTV signal for first error correction in order to correct errors in the first service data that occurred during reception of the DTV signal, the block decoder further decoding the error-corrected first service data for second error correction in order to additionally correct errors in the first service data that occurred during reception of the DTV signal.
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Abstract
A VSB communication system comprises a VSB transmission system and a VSB reception system. The VSB transmission system multiplexes a coded MPEG data and a coded supplemental data having a null sequence inserted therein, with required multiplexing information included in a field synchronization signal or in a supplemental data according to a number of the supplemental data packets being transmitted. The VSB reception system detects the required multiplexing information from the field synchronization signal or the supplemental data and decodes the multiplexed data by using the null sequence and the detected multiplexing information, as well as demultiplexes the multiplexed data into the MPEG data and the supplemental data.
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Citations
17 Claims
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1. A digital television (DTV) receiver comprising:
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a demodulator demodulating a digital television (DTV) signal containing first service data multiplexed with second service data; a signaling information detector detecting signaling information from the demodulated DTV signal; and a block decoder decoding the first and second service data in the demodulated DTV signal for first error correction in order to correct errors in the first service data that occurred during reception of the DTV signal, the block decoder further decoding the error-corrected first service data for second error correction in order to additionally correct errors in the first service data that occurred during reception of the DTV signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A transmission system for processing audio/video (AV) data, the transmission system comprising:
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a first interleaver configured to interleave first AV data having a first attribute for first burst error correction, the first AV data input to the first interleaver through a first path and including at least audio or video data, the first interleaver dispersing the first AV data; a multiplexer configured to multiplex the interleaved first AV data with second AV data based on multiplexing information, the second AV data input to the multiplexer through a second path different from the first path and having a second attribute different from the first attribute and including at least audio or video data; and a second interleaver configured to interleave the multiplexed first and second AV data for second burst error correction, the second interleaver dispersing the multiplexed first and second AV data. - View Dependent Claims (11, 12, 13)
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14. A method of processing audio/video (AV) data in a transmission system, the method comprising:
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interleaving first AV data having a first attribute in a first interleaver for first burst error correction, the first AV data being input to the first interleaver through a first path and including at least audio or video data, wherein interleaving the first AV data comprises dispersing the first AV data; multiplexing the interleaved first AV data with second AV data in a multiplexer based on multiplexing information, the second AV data being input to the multiplexer through a second path different from the first path and having a second attribute different from the first attribute and including at least audio or video data; and interleaving the multiplexed first and second AV data in a second interleaver for second burst error correction, wherein interleaving the multiplexed first and second AV data comprises dispersing the multiplexed first and second AV data. - View Dependent Claims (15, 16, 17)
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Specification