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Enhanced VSB viterbi decoder

  • US 8,135,095 B2
  • Filed: 06/25/2010
  • Issued: 03/13/2012
  • Est. Priority Date: 11/16/2004
  • Status: Active Grant
First Claim
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1. A method for processing a digital television (DTV) broadcast signal in a broadcasting receiver, the method comprising:

  • receiving, by a tuner, the DTV broadcast signal including enhanced data;

    equalizing the received DTV broadcast signal by compensating channel distortion of the received DTV broadcast signal;

    decoding signaling information from the equalized DTV broadcast signal, wherein the signaling information includes information indicating whether the enhanced data are coded at a ½

    code rate or at a ¼

    code rate;

    decoding, by a decoder, the enhanced data included in the equalized DTV broadcast signal; and

    derandomizing, by a derandomizer, the decoded enhanced data,wherein the enhanced data in the received DTV broadcast signal are generated in a broadcast transmitter by;

    randomizing original enhanced data,first Reed Solomon (RS) encoding the randomized original enhanced data,convolutional encoding the first RS-encoded original enhanced data,second RS encoding the convolutional encoded original enhanced data,interleaving the second RS-encoded original enhanced data, andtrellis encoding the interleaved original enhanced data.

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