Raycasting system and method
CA 2321050 A1 · Owner: Algotec Systems Ltd. · Inventors: Miller, Gad; Akerman, Shmuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of determining a z-buffer for a voxel data set comprising first , raycasting at least a first ray to determine a value for a first z-buffer element; and second raycasting at least a second ray to determine a value for a second z-buffer element, where said z-buffer element values are determined at different accuracies, which different accuracies are responsive to characteristics of the data set at a neighborhood of said rays. Preferably said different accuracies are achieved by modifying the accuracy of determination of an intersection between a cast ray and a solid voxel of said data set. Alternatively or additionally said different accuracies are , achieved by modifying 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 February 18, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 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
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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.