Method and apparatus for displaying a virtual world
CA 2172548 A1 · Owner: Vpl Research, Inc. · Inventors: Lanier, Jaron Z.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A database (56) stores image data corresponding to an image which extends along first and second generally perpendicular image axes. A display device (14) is mounted for movement with the user's head in proximity to the user's eye and an image generating circuit, (54) generates a portion of the image on the display device (14) using coordinate data which varies only for the first and second image axes. A movement measuring circuit (58) includes a plurality of radiation emitters disposed about the person's body part and a sensor (38) disposed at a fixed reference point which detects the identity of the radiation emitters and/or the intensity of radiation emitted by each emitter.
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 September 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2016.
- 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.