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Expired Canadian patentCanada

Switching arrangement with automatic data alignment over a + 3.5-bit range

CA 1283726 C · Owner: Telecommunications Radioelectriques Et Telephoniques T.R.T. · Inventors: Cornet, Jean-Francois Rene; Clement, Patrick

CIPO record

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Abstract From the Canadian patent

PHF. 83 584 10, ABSTRACT:, An arrangement ensuring the change-over of two channels (1, 2) through which the same digital information is conveyed with automatic data alignment over a ? 3.5 bit range comprises for each channel an array of buffer stores operating at a write rate Hi/Ni (where i = 1, 2), an oscillator operating at a rate H which provides reading of the buffer stores at the rate H/N and being synchronized in phase-opposition with one or the other of the write rates, and a logic comparator controlling the write rates Hi/Ni, the routing of the write rates to the input of the oscillator as well as a, change-over switch for the data. In the buffer store of the channel 2 assumed to be …

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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 April 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 25, 1984
GrantedApril 30, 1991
Term endedApril 30, 2008
Patent numberCA 1283726 C
Classification (IPC)H04L1/02

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedOct 25, 1984Patent grantedApril 30, 1991Term endedApril 30, 2008

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.