Acoustic crosstalk cancellation system
CA 2314374 A1 · Owner: Lucent Technologies, Inc. · Inventors: Elko, Gary Wayne; Ward, Darren Brett
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for acoustic crosstalk cancellation which uses a loudspeaker arrangement including three loudspeakers, with the center loudspeaker set forward of the two outside loudspeakers. This arrangement increases the bandwidth in which. effective cancellation is provided. The system provides a significant gain in performance over conventional crosstalk cancellation systems which are, very sensitive to the position of the listener's head.
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 July 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2022.
- 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.