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:
Jul. 29, 1980
Filed:
May. 04, 1978
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Abstract
A method of controlling the exposure of a camera comprising steps of measuring the luminance of an object on each surface section thereof by a plurality of photoelectric elements widely arranged on the image forming plane of the camera and where the light from the object to be photographed is received, of gaining the maximum and the minimum values of the outputs provided by any one of the photoelectric elements and detecting whether the difference between the maximum and the minimum values exceeds a predetermined value, and of converting the mode for determining the exposure by the detecting signal. The exposure is determined on the basis of a luminance level equal to the maximum value when the difference between the maximum and the minimum values of the outputs provided by any one of the photoelectric elements exceeds the predetermined value and the number of the photoelectric elements providing outputs near the maximum value is small, while on the basis of a luminance level equal to the minimum value when the difference between the maximum and the minimum values of the outputs provided by any one of the photoelectric elements exceeds the predetermined value and the number of the photoelectric elements providing outputs near the minimum value is small.