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Robust data transmission using broadcast digital television signals

  • US 7,042,949 B1
  • Filed: 11/14/2001
  • Issued: 05/09/2006
  • Est. Priority Date: 04/03/2001
  • Status: Expired due to Fees
First Claim
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1. A method for inserting digital data into a digital television (DTV) broadcast signal, the DTV signal comprising a plurality of frames, each frame comprising a plurality of data segments, the method comprising:

  • encoding the digital data as codewords; and

    replacing data segments within the DTV signal with the codewords;

    wherein the step of encoding the digital data as codewords comprisesdividing the digital data into bit sequences; and

    encoding each bit sequence as a corresponding codeword selected from a finite set of codewords wherein;

    each codeword corresponds to a specific bit sequence,the codewords are all of the same length, andeach codeword is longer than its corresponding bit sequence.

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