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:
Jun. 27, 1989
Filed:
Nov. 20, 1987
Atsushi Fujioka, Neyagawa, JP;
Atsushi Morimura, Nara, JP;
Yoshinori Kitamura, Takatsuki, JP;
Hiroki Matsuoka, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A light signal control circuit for an image pick-up apparatus detects a substantially peak value of image pick-up signals by a first level detection circuit, detects a substantially average value of the image pick-up signals by a second level detection circuit, determine a brightness condition of an object by a decision circuit, weights the outputs of the first level detection circuit and the second level detection circuit by a weighting circuit, and controls the amount of light reaching an image pick-up apparatus in accordance with an output of the weighting circuit. Optimum light control corresponding to the brightness condition of the object is attained by controlling the weighting operation in accordance with an output of the decision circuit.