Processing techniques and equipment for superimposing images for projection
CA 2415115 C · Owner: Adkins, Sean · Inventors: Zhou, Samuel Z.; Adkins, Sean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Addressed herein are techniques and equipment for pre-processing digital images to be superimposed for display. Filtering re-sampling, and decimation , are variously used to process images and sub-images to produce to-besuperimposed images. One of the described techniques is designed primarily (although not necessarily exclusively) for computational efficiency while the , other sacrifices some computational efficiency for higher quality of output images.
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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 July 3, 2001 and granted January 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2023.
- 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.