Self-synchronous packet scrambler
CA 2194919 C · Owner: Pmc-Sierra Ltd. · Inventors: Lang, Steven Forbes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital data transmission system of a type that uses NRZ line coding, comprising apparatus for generating data sequences comprising at least flag sequences and packet data, a frame generator for assembling scrambled data sequences, into frames for transmission to a receiver, and a self synchronous scrambler for continuously scrambling the data sequence including the flag sequences and packet data and, delivering the resulting scrambled data sequence to the frame generator.
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 January 13, 1997 and granted December 4, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2019.
- 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.