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:
Jan. 26, 2016

Filed:

Sep. 16, 2013
Applicant:

Yokogawa Electric Corporation, Tokyo, JP;

Inventors:

Shunsuke Ebisumoto, Tokyo, JP;

Kazuhiro Hashizumi, Tokyo, JP;

Yoshiharu Shiratori, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 5/378 (2011.01); G01J 1/18 (2006.01); H03K 17/96 (2006.01);
U.S. Cl.
CPC ...
H04N 5/378 (2013.01); G01J 1/18 (2013.01); H03K 17/9636 (2013.01); H03K 2217/94026 (2013.01); H03K 2217/94031 (2013.01); H03K 2217/94108 (2013.01);
Abstract

A sensitivity adjustment device may include: a light receiver configured to receive a reflected light that has been emitted from a light emitting unit and reflected by a reflector, the light receiver being configured to convert the reflected light into an analog electrical signal; an A/D converter configured to convert the analog electrical signal into a digital signal; a threshold value calculator configured to calculate a threshold value with reference to a voltage level of the digital signal that has been sequentially converted and output by the A/D converter; and a determination unit configured to compare a high voltage level of the digital signal with the threshold value.


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