Still image sensing apparatus
CA 2014817 C · Owner: Takayama, Tsutomu · Inventors: Takayama, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A still image sensing apparatus comprising an image sensor, a memory circuit for writing therein the video signal for one field or one frame from the image sensor, a detecting circuit for detecting the color temperature information of a light source related to an object being photographed on the basis of the aforesaid video signal, and a control circuit receptive of an output of the detecting circuit for controlling the white balance of a video signal read from the memory circuit.
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 18, 1990 and granted June 18, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2012.
- 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.