Tdm circuit-switching arrangement that handles frames of different sizes
CA 2104750 C · Owner: Payne, William Andrew, Iii · Inventors: Payne, William Andrew, Iii; Paker, Marianne Flood; Pawelski, Robert Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A time-division multiplexed circuit switch (100) handles different-size time-division multiplex frames (30, 40 50) in a single, shared, time-space-timeswitching fabric. Both time slot interchange stages (131 141) and a, time-multiplexed space stage (120) of the switching fabric receive a plurality of overlapping different-size frames in each incoming superframe (30) of a succession of superframes and interleave switching of the different-size frames through theswitching fabric to create a succession of outgoing superframes each one of which also has a plurality of the time-division-multiplex frames of different-sizes but from a plurality of incoming superframes. Switching of every …
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 August 24, 1993 and granted September 23, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2015.
- 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.