Method and apparatus for calibrating a tiled display
CA 2345226 A1 · Owner: Honeywell Inc. · Inventors: Johnson, Michael J.; Chandrasekhar, Rajesh; Chen, Chung-Jen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A display system that can be calibrated and re-calibrated with a minimal amount of manual intervention. To accomplish this one or more cameras are , provided to capture an image of the display screen. The resulting captured image is processed to identify any non-desirable characteristics including , visible artifacts such as seams bands, rings, etc. Once the non-desirable characteristics are identified, an appropriate transformation function is determined. The transformation function is used to pre-warp the input video signal that is provided to the display such that the non-desirable characteristics are reduced or eliminated from the display. The transformation function preferably …
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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 September 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 2021.
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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.