Interactive display system
CA 2288900 A1 · Owner: Ellison, Julian Goring Archdale · Inventors: Handley, James William; Ellison, Julian Goring Archdale
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interactive display apparatus comprises an audio subsystem (4) a control , subsystem (5) and a plurality of video subsystems (2 3). The video subsystems , (2, 3) have access locally to image data including image files and live , video. The video subsystems (2 3) are controlled by the control subsystem (5) which then sends command messages to the video subsystems (2 3). A person , watching the display (22 42) of one of the video subsystems (2, 3) can dial into the audio subsystem (4) and thereby control the operation of the video subsystem (2, 3). To do this, the audio subsystem (4) notifies the control subsystem (5) of incoming audio command signals. It is to be noted that when the …
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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 April 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.