A system for dc restoration of serially transmitted binary signals
CA 2113760 C · Owner: Gennum Corporation · Inventors: Webster, Stephen Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A DC restorer device for restoring the DC and non-zero average components of a serially transmitted binary signal which has been AC coupled. The device comprises an input port for receiving the binary signal, a clamping circuit, a feedback network a summing node, and an output port. The input port is connected to a capacitor for AC coupling the binary signal to the summing node. The clamping circuit is also connected to the summing node. The feedback network includes an input and an output which are also connected to the summing node. The clamping circuit clamps the positive and negative peaks of the AC coupled binary signal which exceed a predetermined range. The feedback network latches …
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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 19, 1994 and granted January 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 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
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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.