Computer presentation system and method with optical tracking of wireless pointer
CA 2378154 C · Owner: Olga L. Gordon, As Chapter 7 Trustee For The Bankruptcy Estate Of Karl C. Hansen And Lisa H. Hansen, And Not Individually · Inventors: Hansen, Karl C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for remotely controlling a computer (10) having an associated screen (16) for displaying output from the computer (10) and having an , internal cursor (26) generated by the computer (10) includes at least detecting one , property of an external cursor (22). In one embodiment the invention includes , a , computer (10) connected to a projector (12) which projects an image of the , computer (10) onto an external screen (16). A camera (14) is used to capture the , image of the projected computer output. An optical pointer (24) such as a , laser , pointer, is used to generate and transmit an external cursor (22) having various , properties, such as color, shape or intensity. 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 June 21, 2000 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.