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Expired Canadian patentCanada

Central processing hub for multimedia conferencing system

CA 2316738 C · Owner: Convedia Corporation · Inventors: Geofroy, Paul Joseph; Wilson, Susan Elizabeth; Jang, Raymond Edward

CIPO record

Overview

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

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Abstract From the Canadian patent

0 A multimedia conferencing system has a plurality of remote user terminals each of which may be different from any other and each of which may communicate to a central processing hub using different communications protocols. The central processing hub receives processes, and sends video and audio data from and to the plurality of remote users and comprises a media bus for handling video and audio data signals a packet bus for handling data and control signals a shelf controller card which issues control messages in keeping with incoming management signals a bus controller card which provides clock and bus arbitration signals at least one media processor card for processing video and audio …

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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 August 28, 2000 and granted October 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 28, 2000
GrantedOctober 28, 2003
Term endedAugust 28, 2020
Patent numberCA 2316738 C
Classification (IPC)H04N7/15 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedAug 28, 2000Patent grantedOct 28, 2003Term endedAug 28, 2020

Sources & verification

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