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Variable message coding protocols for encoding auxiliary data in media signals

  • US 20030033530A1
  • Filed: 07/10/2002
  • Published: 02/13/2003
  • Est. Priority Date: 05/16/1996
  • Status: Active Grant
First Claim
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1. A message protocol method comprising:

  • forming a fixed message protocol portion having a fixed length and identifying a version of a variable protocol portion;

    forming the variable message protocol portion having variable error robustness message coding format, wherein the version indicates the error robustness coding format of the variable protocol portion; and

    embedding message symbols of the fixed and variable message protocol portions into a host media signal such that the message is substantially imperceptible in the host media signal.

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