DTV transmitter and method of coding main and enhanced data in DTV transmitter
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United States of America Patent
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Sep 14, 2010
Grant Date -
Aug 2, 2007
app pub date -
Dec 27, 2006
filing date -
Dec 27, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A DTV transmitter includes a pre-processor pre-processing enhanced data, a data formatter generating enhanced data packets including the pre-processed enhanced data, and a multiplexer multiplexing the enhanced data packets with main data packets. The transmitter further includes an RS encoder RS-coding the multiplexed packets by adding systematic RS parity data to each main data packet and by adding non-systematic RS parity place holders to each enhanced data packet, and a data interleaver interleaving the RS-coded packets. The non-systematic RS parity place holders are placed after the enhanced data within each interleaved enhanced data packet, and a sequence of known data place holders is periodically included in the interleaved enhanced data packets.
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