Sts-1 signal processing method and device which can prevent subsequent terminal equipment from generating unnecessary alarm
CA 2078632 C · Owner: Nakagawa, Tatsuhiko · Inventors: Endo, Kinya; Nakagawa, Tatsuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a processing device for processing an STS-1 signal (10) into a DS-3 signal (11), an output circuit (19) outputs an idle code signal when a judging circuit (16) judges that a detected STS path signal label part indicates that an STS synchronous payload envelope of the STS-1 signal is unequipped or unused. The idle code signal represents an idle code prescribed for the DS-3 signal and is generated by a generator (18). The detected STS path signal label part is produced by a detecting circuit (12, 15) which detects an STS path signal label part from STS path overheads of successive subframes of the STS synchronous payload envelope. The judging circuit judges whether or not the detected STS …
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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 September 18, 1992 and granted December 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.