Method and system for a user to manually alter the quality of previously encoded video frames
CA 2201516 C · Owner: Yogeshwar, Jay · Inventors: Thagard, Greg B.; Kitamura, Tetsuya; Tsinberg, Mikhail
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system in which a user manually changes the quality of portions of video frames after the frames have been previously encoded. Regions of one or more frames of video are selected to have an increased quality a decreased , quality, or a quality which should not be altered (174). After the regions are defined by a user, the frames of video is digitally re-encoded and inserted into the digitally encoded data stream in place of the previously encoded data (182 and 190). In order to easily remove a previously encoded frame from the data stream and replace it with a newly encoded frame having regions of quality defined by the user, it is preferable to have the newly encoded …
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 April 19, 1996 and granted June 10, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2018.
- 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.