Pipelined cell site base station receiver for a spread spectrum signals
CA 2185444 C · Owner: Qualcomm Incorporated · Inventors: Easton, Kenneth D.; Werner, David E.; Levin, Jeffrey A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An integrated modem (110) for use in a spread spectrum communications system. The modem includes in a demodulator front end (122) which despreads received multipath signals. A single transform engine (120), which operates on a time slice basis demodulates each despread multipath signal. The output of the transform processor engine (120) is provided to maximum detection circuitry (160) and a pipeline processor (126). Pipeline processor (126) which also operates on a time slice basis combines and further processes, the demodulated multipath signals to provide soft decision data for deinterleaving and error correction decoding in deinterleaver/decoder (130) to recover received data. The modem …
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 January 16, 1996 and granted March 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 16, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 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.