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:
Aug. 22, 1989
Filed:
Dec. 28, 1987
Mitsuru Saito, Ibaraki, JP;
Kazuchika Sato, Kobe, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An electronic still camera is designed to be operable for flash photography in collaboration with an electronic flash unit. This camera has an image pickup element for photoelectrically converting an image of an object to be photographed formed by a taking lens. The output of the image pickup element is subjected to gain control in a gain control circuit, after which it is converted into a signal suited for storing in a storing section. Further, this camera has a stop signal generating medium for stopping the flashing of the electronic flash unit when the integrated value of the light reflected from the object to be photographed reaches a predetermined value, a photoelectric conversion element for performing receipt and integration of light which has passed through the taking lens during the charge accumulation period of the image pickup element, and a gain determining circuit for determining the gain of the gain control circuit. And, determination of the gain is performed according to the difference between the output value of the photoelectric conversion element at the time of completion of charge accumulation of the image pickup element and a predetermined value.