Device and method for synchronising voltage ciphering machine in atm networks
CA 2355332 A1 · Owner: Deutsche Telekom Ag · Inventors: Heister, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device and a method for synchronising at least one voltage deciphering machine which on the receiver side is connected to a transmission channel for ATM cells. A voltage ciphering machine is mounted in the transmission channel at transmitter level. The voltage ciphering machine and the voltage deciphering machine are both provided with a pseudo-random generator which produces a variable key which is identical at transmitter and receiver level with the aid of a secret key. A device for cell boundary detection and a state automaton are respectively associated with the voltage ciphering machine and the at least one voltage deciphering machine. The state …
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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 December 9, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2021.
- 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.