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.

Date of Patent:
Mar. 21, 2017

Filed:

Jan. 15, 2015
Applicant:

Hitachi Industry & Control Solutions, Ltd., Hitachi-shi, Ibaraki, JP;

Inventors:

Shinichiro Hirooka, Tokyo, JP;

Hirotomo Sai, Tokyo, JP;

Junji Shiokawa, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/235 (2006.01);
U.S. Cl.
CPC ...
H04N 5/2353 (2013.01); H04N 5/2351 (2013.01);
Abstract

An imaging apparatus includes an imaging unit; an image signal correcting unit that executes a signal level correction process on an image signal output by the imaging unit and outputs the level corrected image signal; and a gradation collapse suppression control unit that evaluates a degree of gradation collapse of a predetermined brightness range in the image signal output by the imaging unit and switches control of an exposure amount of the imaging unit and an input/output characteristic of the signal level correction process of the image signal correcting unit, when it is determined that the gradation collapse exists according to an evaluation result and when it is determined that the gradation collapse does not exist according to the evaluation result.


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