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Canadian application, no grantCanada

Apparatus and method for tandem-free vocoder operation between non-compatible communication systems by extracting inter- or intrasystem tfo-information

CA 2503580 A1 · Owner: Kandhadai, Ananthapadmanabhan Arasanipalai · Inventors: El-Maleh, Khaled Helmi; Kandhadai, Ananthapadmanabhan Arasanipalai

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Abstract From the Canadian patent

Tandem-free vocoder operations (TFO) between non-compatible communication systems may be enabled through hardware modifications at communication elements within each system. In one aspect each infrastructure entity in , System 1 comprises an intra-system TFO Frame Generator (G1) an intra-system , TFO Frame Extractor (E1) and a TFO Frame Extractor (E2) of System 2 which is , non-compatible to System 1. Each infrastructure entity in System 2 comprises an intra-system TFO Frame Generator (G2) an intra-system TFO Frame Extractor , (E2) and a TFO Frame Extractor (E1) of System 1. In an embodiment intersystem , TFO Frame Generators (G1 G2) are also provided. In another embodiment intersystem …

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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 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2025.
  • 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 24, 2003
GrantedNo grant recorded
Term endedOctober 24, 2023
Patent numberCA 2503580 A1
Classification (IPC)H04W4/18 +1 more

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2004200620082010201220142016201820202022Application filedOct 24, 2003Term endedOct 24, 2023

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