Method and device for generating and detecting a fingerprint functioning as a trigger marker in a multimedia signal

  • US 9,066,114 B2
  • Filed: 01/10/2014
  • Issued: 06/23/2015
  • Est. Priority Date: 07/11/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining a plurality of trigger fingerprints from content being played back on a playback device, each trigger fingerprint identifying a corresponding trigger time point of a sequence of trigger time points in the content and at which trigger time point at least one corresponding action is to be triggered, the determining being performed by a processor;

    accessing a database that includes a plurality of reference fingerprints, previously derived from the content, and a plurality of reference actions, each reference fingerprint identifying at least one corresponding reference action to be performed at a reference time point identified by the reference fingerprint;

    identifying the corresponding reference action by obtaining a match in the database between a trigger fingerprint among the plurality of trigger fingerprints and a reference fingerprint among the plurality of reference fingerprints; and

    performing a reference action that corresponds to the reference fingerprint on the playback device.

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