Camera for recording television, photographic or cinematographic images, including an automatic focus- setting device
CA 1278719 C · Owner: Izushi, Munehisa · Inventors: Jaspers, Cornelis A.M.; Izushi, Munehisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Camera for recording television photographic or cinema-, tographic images including an automatic focus-setting, device". A camera for recording television photographic, or cinematographic images includes an automatic focussetting device. Information for this device is obtained with the aid of two optical paths having different path lengths present in an optical lens system placed in front of an opto-electronic sensor in the form of a charge transfer device comprising a pick-up member a storage, member and a shift register member. After a signal comparison of signals obtained during focus information recording periods the focus is set until an optimum signal correlation is the result. To …
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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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
- 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.