Digital signal clamp circuitry
CA 2012809 C · Owner: Fling, Russell T. · Inventors: Fling, Russell T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital signal clamp circuit is realize using an adder and an up/down counter. The digital signal is coupled to one input of the adder and the counter output is coupled to a second input of the adder. The up/down counter is enabled to count only during signal intervals exhibiting the desired clamping level. The counter is controlled to count up or down depending on the polarity of the signal provided by the adder. The count value in the counter is continuously applied to the adder to provide clamping. Using a truncated count value from the counter enhances clamping performance.
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 March 22, 1990 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2012.
- 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.