The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 1986
Filed:
Dec. 20, 1983
Shigeo Suzuki, Tokyo, JP;
Kiyoshi Kawano, Tokyo, JP;
Kimiaki Ogawa, Tokyo, JP;
Harumi Aoki, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An electronic camera having both bright viewfinder image and a minimal effect of dark current on the image output signal. A quick-return mirror, normally positioned in the path of the flux of light from the object image, guides the flux of light into the optical viewfinder system. The quick-return mirror is retractable to allow the flux of light to fall onto an image pickup device. A vertical synchronizing signal generator issues a signal for discharging electric charges stored in the image pickup device after the release switch has been turned on and before the quick-return mirror begins its movement out of the light flux path and issues a signal for reading out electric charges which have been stored in the image pickup device while the shutter is open after an exposure operation has been completed. The frequency of scanning for discharging the electric charges is higher than the frequency for scanning for reading out the electric charges subsequent to the photographing operation.