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:
Dec. 24, 2019
Filed:
Mar. 09, 2017
Applicant:
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Inventor:
Kohji Hamaguchi, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 17/10 (2006.01); G01S 7/497 (2006.01); G01S 17/02 (2006.01); H03K 17/945 (2006.01);
U.S. Cl.
CPC ...
G01S 7/497 (2013.01); G01S 17/026 (2013.01); G01S 17/10 (2013.01); H03K 17/945 (2013.01);
Abstract
A proximity sensor includes: a light emitting unit that emits light; a light receiving unit that generates measurement current which includes object reflected light current and non-detection-target-object reflected light current; and an initial calibration execution unit that updates, on the basis of a value of the measurement current, an offset value according to the non-detection-target-object reflected light current, in a case where the value of the measurement current is equal to or less than an initial threshold.