Signal coding
CA 1333502 C · Owner: Carr, Michael Douglas · Inventors: O'Donnell, John; Leaning, Anthony Richard; Carr, Michael Douglas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The sequence of transmission of pixel values within a block of a picture to be coded is selected according to the shape of a derived movement matrix and differential coding used, based on the preceding element in the coding sequence, thereby ensuring that the prediction is a good one (having regard to the direction of motion) without overtly making a previous element/previous line decision.
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
- Granted December 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 13, 2011.
- 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.