Spread spectrum modulator
CA 2205325 A1 · Owner: Nara, Yoshikazu · Inventors: Nara, Yoshikazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method is disclosed for producing a band-limited modulated information signal. A modulating signal generator is disclosed which provides a band-limited modulating signal having a predetermined bandwidth and cutoff characteristic. A modulator system and method is disclosed for producing a band-limited modulated information signal by combining an information signal with the band-limited modulating signal. A modulating signal generator and method is disclosed which generates a band-limited modulating signal as a series of modulating signal values at periodic intervals. A further modulating signal generator is disclosed which provides a band-limited modulating signal by generating …
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 May 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2019.
- 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.