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DTV transmitting system and method of processing broadcast data

  • US 8,689,086 B2
  • Filed: 03/25/2013
  • Issued: 04/01/2014
  • Est. Priority Date: 04/29/2006
  • Status: Expired due to Fees
First Claim
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1. A method of processing broadcast data in a transmitting system, the method comprising:

  • Reed-Solomon (RS) and Cyclic Redundancy Check (CRC) encoding enhanced data bytes to build an RS frame;

    block processing data bytes in the built RS frame, wherein block processing the data bytes comprises;

    converting the data bytes in the built RS frame to data bits;

    encoding each of the data bits at a 1/2 coding rate to output data symbols;

    interleaving the data symbols; and

    converting the interleaved data symbols to data bytes;

    forming a data group including enhanced data corresponding to the data bytes converted from the interleaved data symbols, a plurality of known data sequences, and signaling information;

    deinterleaving the enhanced data in the data group;

    multiplexing the deinterleaved enhanced data with main data;

    interleaving the multiplexed data; and

    trellis encoding the interleaved data,wherein;

    encoding at the 1/2 coding rate is achieved by outputting a corresponding bit as a first output bit and outputting as a second output bit after encoding the corresponding bit;

    one data symbol consists of the first output bit and the second output bit;

    at least two of the plurality of known data sequences have different lengths; and

    the signaling information includes data group information.

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