Improved codebook searching techniques
CA 2175264 C · Owner: Nahumi, Dror · Inventors: Nahumi, Dror
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Simplified methods of searching a codebook table are provided. These methods perform a codebook search for a plurality of pulses one pulse at a time, in order of increasing to decreasing pulse significance wherein pulse significance, is defined as the relative contribution a given pulse provides to minimizing themean-squared error between the source signal and the quantized sequence of pulses.
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 April 29, 1996 and granted January 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2018.
- 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.