Image signal coding system
CA 2081065 C · Owner: Asai, Kohtaro · Inventors: Asai, Kohtaro; Yamada, Yoshihisa; Murakami, Tokumichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adaptive blocking coding system selects an effective blocking of an input image signal to be encoded in accordance with the correlation between fields even if, motion is detected between the fields. The blocking patterns include an individual field blocking a, non-interlace blocking, a split blocking and an inverted split blocking. Further, the coding system searches for motion from both odd and even fields of a frame for producing a motion compensated prediction signal in order to provide high-efficient coding.
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 October 21, 1992 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2014.
- 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.