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Multiple transmission paths for hierarchical layers

  • US 8,576,858 B2
  • Filed: 04/16/2010
  • Issued: 11/05/2013
  • Est. Priority Date: 12/13/2006
  • Status: Active Grant
First Claim
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1. A method for hierarchical communication of a set of source data, the method comprising:

  • receiving source data representing content to be communicated to a data terminal;

    pre-coding at least some of the source data using a first pre-coding scheme to generate a first set of representation data, decodable independently to provide a set of first-level playback data representing the source data;

    pre-coding at least some of the source data using a second pre-coding scheme to generate a second set of representation data, decodable in combination with the first set of representation data to provide a set of second-level playback data representing the source data;

    associating the first set of representation data with a first channel coding and modulation scheme;

    associating the second set of representation data with a second channel coding and modulation scheme, wherein the second channel coding and modulation scheme is of a higher order than the first channel coding and modulation scheme;

    generating a first transmission by applying the first channel coding and modulation scheme to the first set of representation data;

    generating a second transmission by applying the second channel coding and modulation scheme to the second set of representation data;

    transmitting the first transmission to the data terminal on a first communication link; and

    transmitting the second transmission to the data terminal on a second communication link, wherein the second communication link differs from the first communication link.

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