Sound pickup device and voice conference apparatus
CA 2627499 C · Owner: Ishibashi, Toshiaki · Inventors: Ukai, Satoshi; Ishibashi, Toshiaki; Tanaka, Ryo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Microphone arrays, which are formed by arranging a plurality of microphones are provided on a front side and a rear side of a housing respectively. A , virtual focus is set for each of the microphone arrays in a direction opposite to a direction in which sound is picked-up sound signals picked up by the plurality of microphones are delayed such that distances to the virtual focus are the same, and the delayed sound signals are synthesized. Therefore sound , in a sound-pickup area of a predetermined angle on each of the front side and the rear side can be picked up at a high level and even though there is a , noise source in areas other than the sound-pickup area noise from the noise , …
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 31, 2006 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2026.
- 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.
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.