Circuit arrangement for demodulating a signal
CA 2133371 A1 · Owner: Horl, Manfred · Inventors: Horl, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit arrangement is described for demodulating a useful signal (17) which is amplitude-modulated on a carrier oscillation by means of an amplifier, arrangement (1) comprising an operational amplifier (7) which has at least two input stages (55 to 58) which can be optionally switched actively by means of switching signals (at 65) and/or is connected to at least two input output and feedback networks, (13, 14, 33 34, 36) which can be optionally switched actively by means of the switching signals in such a way that the amplifier arrangement (1) has at least two gains (V) which are differently predeterminable by the active operation of the individual input stages (55 to 58) and networks …
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 September 30, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2016.
- 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.