Logical machine for processing control information of telecommunication transmission frames
CA 2086146 C · Owner: Dries, Johan Maria Frans · Inventors: Therasse, Yves; Dries, Johan Maria Frans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A logical machine for processing Synchronous Transport Module (STM) frames STM-4c transmitted according to the Synchronous Digital Hierarchy (SDH) protocol. Each frame STM-4c carries data information and control information which includes a pointer information and concatenation informations. The pointer information indicates the start location of the data information in the frame and the concatenation informations indicate the structure of this data information. The logical machine is relatively simple since it operates according to a single state diagram in function of a single word comprising both the pointer information and the concatenation informations of a same frame.
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 December 23, 1992 and granted February 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 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.