Digital signal transmission cable noise analyzer
CA 1231453 A · Owner: L'Etat Francais Represente Par Le Ministre Des P.T.T. (Centre National D'Etudes Des Telecommunications) · Inventors: Perrot, Jean-Claude; Schirlin, Marcel; Camborde, Jean-Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An analyzer for noise signals which are transmitted by a telephone pair in a telephone cable is connected to a digital transmission equalizer. A delimiting circuit delimits the binary stream generated by the threshold detector into data packets such that each stream is considered to be a unique packet as long as the stream does not comprise a predetermined number of zeros. At predetermined instants, writing is triggered into a random access data memory to store the contents of a schedule data register, of a storage register and of a frame unique word register. The time base also comprises an output connected to an incrementing input of an address counter and to an output connected to the …
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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
- Granted January 12, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2005.
- 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.