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Method and device for generating and detecting fingerprints for synchronizing audio and video

  • US 7,907,211 B2
  • Filed: 07/20/2004
  • Issued: 03/15/2011
  • Est. Priority Date: 07/25/2003
  • Status: Active Grant
First Claim
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1. A computer-implemented method of synchronizing two or more signals, the method comprising:

  • generating a first fingerprint stream on the basis of a first signal,generating a second fingerprint stream on the basis of a second signal,comparing a segment of the first fingerprint stream with one or more first fingerprints stored in at least one database in order to determine if a match exists or not,comparing a segment of the second fingerprint stream with one or more second fingerprints stored in the at least one database in order to determine if a match exists or not, andif a match exists for both a first and a second fingerprint determining a location of a first synchronization time point (Tn, Tn+1) for the first signal and a location of a second synchronization time point (Tn, Tn+1;

    Tm) for the second signal and synchronizing the first and the second signal using the determined locations.

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