Method for efficient computation of image frames for dual modulation display systems using key frames
CA 2563517 C · Owner: Dolby Laboratories Licensing Corporation · Inventors: Seetzen, Helge
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides methods and systems for processing image data made up of a series of frames for displaying on a dual modulation display system having a first modulator disposed to illuminate a second modulator wherein a , first modulation signal and a luminance map are not calculated for every frame. Instead, certain frames referred to as "key frames" are used to provide the first modulation signal and the luminance map for a plurality of other frames.
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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 December 24, 2004 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.