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Expired Canadian patentCanada

Multimedia search and indexing system and method of operation using audio cues with signal thresholds

CA 2271535 C · Owner: Stern, Edith H. · Inventors: Lee, Peter S.; Stern, Edith H.; Willner, Barry E.

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Abstract From the Canadian patent

A multimedia search and indexing system automatically selects scenes or events of interest, from any media, i.e. video film, sound for replay, in whole or in part in , other contexts. The entire, audio track of a recorded event in video film, sound, etc. is analyzed to , determine audio levels within a set of frequency ranges of interest. Audio clip levels within the selected frequency ranges, are chosen as audio cues representative of events of interest in the track. The selection criteria are, applied to the audio track of the recorded event. An Edit Decision List (EDL) is generated from the, analysis of the audio track. The list is representative of scenes or sounds of interest as …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed May 12, 1999 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 12, 1999
GrantedApril 2, 2002
Term endedMay 12, 2019
Patent numberCA 2271535 C
Classification (IPC)H04N5/26 +2 more

Timeline

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2000200220042006200820102012201420162018Application filedMay 12, 1999Patent grantedApril 2, 2002Term endedMay 12, 2019

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.