Sonet ds-n desynchronizer
CA 2080267 C · Owner: Broughton, Robert S. · Inventors: Reilly, Brian F.; Broughton, Robert S.; Delgadillo, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A SONET/DS-N desynchronizer and method for receiving an incoming stream of SONET (Synchronous Optical NETwork) data, having a controller for controlling either a direct digital synthesis circuit that provides a desynchronized clock for smoothly adapting the rate at which data is retrieved from a data buffer to the rate at which the incoming SONET data is stored in the data buffer. To minimize jitter and buffer spills (i.e. data overruns or underruns) the, frequency and phase of the desynchronized clock is constantly varied to match the variations of the data rate of incoming SONET data. The DDS circuit generates the desynchronized clock, which has a center frequency equal to a predetermined …
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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 October 9, 1992 and granted July 28, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2014.
- 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.