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Method and apparatus to identify a work received by a processing system

  • US 8,332,326 B2
  • Filed: 02/01/2003
  • Issued: 12/11/2012
  • Est. Priority Date: 02/01/2003
  • Status: Active Grant
First Claim
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1. A computer readable storage medium that provides instructions, which when executed by a first processing unit, cause the first processing unit to:

  • receive a fingerprint of a work from a second processing unit, the fingerprint being generated from perceptual features of media content of said work without using metadata describing said work;

    determine that said fingerprint does not match any of a plurality of fingerprints in a database of known works coupled to the first processing unit;

    determine, by the first processing unit, that the fingerprint matches one of a plurality of fingerprints in a database of unknown works, the database of unknown works comprising record data for fingerprints encountered that did not match a fingerprint in the database of known works; and

    send, by the first processing unit, record data from the database of unknown works for the fingerprint to the second processing unit.

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