Sonet transmission signal processing method and sonet transmission signal processing apparatus
CA 2076238 C · Owner: Nec Corporation · Inventors: Kuroda, Yoshihide
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A VT size setting section 3 allows selection of the VT size desired by the user of the apparatus by accepting setting data inputted from the outside by the user of the apparatus. The VT size comparing section 4 compares the VT size detected at the VT size receiving section 2 with the VT size set by the VT size setting section 3 in order to detect coincidence or noncoincidence. The data outputting section 5 executes the predetermined data processing of data extracted from the SONET transmission signal in accordance with the VT size set by the VT size setting section 3 when the result of the comparison at the VT size comparing section 4 indicates coincidence, but executes error signal …
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 17, 1992 and granted December 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 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.