Code conversion transmission and code conversion reception of audio data
CA 2483406 A1 · Owner: Ozawa, Kazunori · Inventors: Ozawa, Kazunori; Dei, Hiroaki; Hatabu, Atsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system that prevents a serious deterioration in the quality of decoded sound caused by an audio coded data transmission error and that reduces an increase , in the required transmission band and an increase in the receiver~s computational complex, even in a mode in which no feedback information from the receiver side is used. A code conversion transmission device (100) which , receives audio coded data, comprises first to N-th code conversion transmission means (102, 104.bullet.106) that convert audio data into N pieces of coded data and transmit them to M transmission lines (130) with constant or adaptively-varying time intervals among them. The second to N-th code conversion …
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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 April 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2025.
- 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.