Method for automatically adapting and configurating the speed of a terminal adapter to either 56kpbs or 64kbps in accordance of the actual transmission rate being used
CA 2134015 C · Owner: Froissart, Michel · Inventors: Vinot, Dominique; Froissart, Michel; Chauffour, Pascal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for automatically adapting and configuring the speed of a terminal adapter to the rate 56Kbps or 64Kbps which is used by a calling adapter. After the sending in the called terminal adapter of the CONNECT message which is sent to the ISDN NETWORK in accordance with CCITT Q.931 Recommendations the called TA is, initialized to a rate of 64 Kbps and then continuously transmits an alignment pattern ALL_ONES while starting a first timing process (T1). This first timing process will cause the called TA to switch to a 56Kbps speed if the 64 Kbps validation process does not succeed. The method then involves the step of checking the reception of a ALL_ZEROS pattern coming from said calling …
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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 October 21, 1994 and granted January 20, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2016.
- 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
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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.