Method and apparatus for multichannel logic matrix decoding
CA 2460010 A1 · Owner: Dressler, Roger W. · Inventors: Dressler, Roger W.; Gundry, Kenneth J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention improves the stability of aural images in the decoding of multichannel signals. Output center-channel and back-surround channel signals are derived or augmented by applying signal processors such as matrix decoders to multichannel input signals.
Read the whole patent
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 September 23, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 23, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.