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Expired Canadian patentCanada

Multi-channel synthesizer and method for generating a multi-channel output signal

CA 2569666 C · Owner: Herre, Juergen · Inventors: Hilpert, Johannes; Ertel, Christian; Hoelzer, Andreas

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Abstract From the Canadian patent

A multi-channel synthesizer includes a post processor(10) for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized reconstruction parameter in that the value of the post processed reconstruction parameter or the derived quantity is not bound by the quantization step size. A multi-channel reconstructor(12) uses the postprocessed reconstruction parameter for reconstructing the multi-channel output signal. By post processing …

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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 June 13, 2005 and granted July 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 13, 2005
GrantedJuly 16, 2013
Term endedJune 13, 2025
Patent numberCA 2569666 C
Classification (IPC)H04S3/00

Timeline

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2006200820102012201420162018202020222024Application filedJune 13, 2005Patent grantedJuly 16, 2013Term endedJune 13, 2025

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