Patent Yard Sign in
Expired Canadian patentCanada

Receiver comprising at least two receive branches

CA 2057187 C · Owner: Lucent Technologies Inc. · Inventors: Koch, Wolfgang

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

The invention relates to a receiver (5a 5b, 10) comprising at least two, receive branches (a b) and including an arrangement (10) for combining the receive, branches (a, b). This is to avoid that separate equalizers are necessary for each receive, branch. There is proposed that each receive branch (a b) comprises a matched, filter (1a, 1b) and an arrangement (6a 6b) for forming an autocorrelation , function (A1 A2) for each estimated impulse response (H1 H2) of the individual receive , branches (a b), that the receiver (5a, 5b, 10) comprises a first adder circuit (11) for adding together, the output signals (z a' z b') weighted with weight factors of the matched filters (1a, 1b), to …

Read the whole patent

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 6, 1991 and granted April 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 2013.
  • 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 6, 1991
GrantedApril 17, 2001
Term endedDecember 6, 2011
Patent numberCA 2057187 C
Classification (IPC)H04B1/18 +1 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedDec 6, 1991Patent grantedApril 17, 2001Term endedDec 6, 2011

Sources & verification

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