Optical clock recovery
CA 2096127 C · Owner: Barnsley, Peter Edward · Inventors: Barnsley, Peter Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed of generating a clock signal from a digital optical data signal not having a significant clock component The digital optical data signal is input into an opto-electronic device (1) and the non-linear variation in the opto-electronic device caused by the digital optical data signal in the device is detected resulting in the generation of a further signal from the device. A component at a clock frequency for the digital optical data signal is extracted form said further signal.
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 November 18, 1991 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2013.
- 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.