Method and apparatus for forming, projecting and detecting a coded pattern image with a camera and recognition system
CA 2586849 C · Owner: Lindgren, Mikael · Inventors: Njoelstad, Tormod; Thomassen, Sedsel Fretheim; Lindgren, Mikael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus (16) for projecting infrared or near infrared or low intensity visible light from a pen, pointer or other guiding object in the form of a coded pattern image, detectable by a camera and recognition system but invisible, or hardly visible to the user and audience thus controlling , and interacting with a computer (19) during a presentation computer supported , work and/or other interactive use of a computer including pointing, selecting, drawing and writing both distantly (11) and closely (10) to the front or rear projection screen or possible other type of display screen without any distracting visual patterns or spots while the possible visual , feedback to 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 November 2, 2005 and granted June 10, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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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.