×

Variable message coding protocols for encoding auxiliary data in media signals

  • US 8,094,877 B2
  • Filed: 08/17/2010
  • Issued: 01/10/2012
  • Est. Priority Date: 05/16/1996
  • Status: Expired due to Fees
First Claim
Patent Images

1. A digital watermark encoder comprising:

  • an electronic memory;

    a processor in communication with the electronic memory, the processor being configured to form a fixed message protocol portion and identify a version of a variable protocol portion;

    wherein the processor is configured to form 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

    wherein the processor is further configured to digitally watermark message symbols of the fixed and variable message protocol portions into a host media signal by altering features thereof, such that the message is substantially imperceptible in the host media signal.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×