Data stream frame synchronisation
CA 2015933 C · Owner: Nortel Networks Limited · Inventors: Brueckheimer, Simon Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data stream has frames of fixed, or variable but determined, length and includes a fixed length header at a predetermined position in the frame which, header has a linear systematic code structure including information digits and check digits. The check digits are employed for frame synchronisation detection as, well as error detection and correction using, far, example, a modified CRC (cyclic redundancy check) decoder.
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 May 2, 1990 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2012.
- 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.