System and method for employing non-alpha channel image data in an alpha-channel-aware environment
CA 2432383 C · Owner: Microsoft Technology Licensing, Llc · Inventors: Noyle, Jeffrey M. J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An image rendered by a non-alpha-channel-aware application is employed in an alpha-channel-aware environment. The pixel data file to be written to , by the non-alpha-channel-aware application is initialized by setting the alpha value for , each pixel to 1. The non-alpha-channel-aware application then writes to the initialized pixel data file, changing some or all pixel data. The alpha value for each , pixel is then decremented by 1 (modulo 256) making the changed pixels opaque and , the unchanged pixels transparent.
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 June 13, 2003 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2025.
- 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.