Apparatus for video signal processing
CA 2103394 C · Owner: Furuhashi, Makoto · Inventors: Furuhashi, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for video signal processing satisfactorily synthesizes images by using field memories and includes control circuit for controlling an operation for making an image first and second field memories in which image data is written under the control of the control circuit and output circuit for outputting image data alternately read out from the first and second field memories at a field period as a video signal to be displayed in an interlace fashion wherein a vertical direction coordinate of coordinate data written in the second memory is shifted from a vertical coordinate written in the first field memory by half of a horizontal line.
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 November 18, 1993 and granted August 27, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2015.
- 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.