System and method for progressively transforming and coding digital data
CA 2775622 C · Owner: Microsoft Technology Licensing, Llc · Inventors: Malvar, Henrique S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method facilitating progressively transforming and coding digital pictures is provided. The present invention via employment of a multi- resolution lapped transform provides for progressive rendering as well as mitigation of blocking artifacts and ringing artifacts as compared to many conventional compression systems. The invention includes a color space mapper a multi-resolution lapped transform, a quantizer a scanner and an entropy encoder. The multi-resolution lapped transform outputs transform coefficients for example, first transform coefficients and second transform coefficients. A multi-resolution representation can be obtained utilizing second transform coefficients of …
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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 March 24, 2003 and granted May 27, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 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.