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Expired Canadian patentCanada

Process and device for beat recovery

CA 2076039 C · Owner: Nokia Siemens Networks Gmbh & Co. Kg · Inventors: Volejnik, Wilhelm

CIPO record

Overview

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Abstract From the Canadian patent

In the bytewise stopping of synchronous signals in the synchronous-digitalmultiplex, hierarchy, fitter with phase jumps of 8 U~ occurs which renders beat recovery difficult. Means are therefore sought for converting fitter into drift. This is achieved with a phase , regulating loop (PLL) in which a phase jump compensator (7) is inserted between the output (4), of a phase discriminator (3) and the input (5) of an oscillator (b). This converts an input , correction value (14) into an output correction value (Ka). If there is no stop, the input , correction value (K ~) leaves the phase jump compensator (7) unchanged (a1 b1). If a positive, stop is made (+St) the pulses of the input …

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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 4, 1990 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 4, 1990
GrantedJanuary 30, 2001
Term endedDecember 4, 2010
Patent numberCA 2076039 C
Classification (IPC)H04J3/06 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedDec 4, 1990Patent grantedJan 30, 2001Term endedDec 4, 2010

Sources & verification

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