Process for reducing data in the transmission and/or storage of digital signals from several dependent channels
CA 2118916 C · Owner: Seitzer, Dieter · Inventors: Seitzer, Dieter; Herre, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for reducing data during the transmission and/or storage of the digital, signals of several dependent channels is described. The dependence of the signals in the channels e.g. in a left and a right , stereo, channel can be used for an additional data reduction. Known methods such as middle/side encoding or the intensity stereo process lead to perceptible interference, in the case of an unfavourable signal composition. The method according to the invention avoids such interference in that a , common, encoding of the channels only takes place if there is an adequate spectral similarity, of the signals in the two channels. With the aid of the method according to the invention an …
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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 October 13, 1992 and granted December 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.