Display techniques for three-dimensional virtual reality
CA 2270734 C · Owner: Carraro, Gianpaolo U. · Inventors: Ensor, James Robert; Carraro, Gianpaolo U.; Edmark, John T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A limitation of a three-dimensional world in which objects in the distance may be represented in only two dimensions as a video on a screen occurs when a computer graphic object represented by computer graphics e.g. in front of, to the, side, above, or below the video screen undergoes a trajectory that takes it , to a location in the world that is not represented as computer graphics but , instead is, within the field represented by the video because such an object would , disappear from view by the viewer. This limitation is overcome by having by determining when a computer graphic object undergoes a trajectory that takes it to a location in, the world that is not represented as computer …
Read the whole patent
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 29, 1999 and granted April 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2021.
- 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.