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. 09, 2020
Filed:
Jun. 02, 2017
Applicant:
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Inventors:
Yoshiki Ikuta, Sakai, JP;
Takuma Hiramatsu, Sakai, JP;
Takayuki Shimizu, Sakai, JP;
Hideki Sato, Sakai, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 1/42 (2006.01); G01S 17/10 (2020.01); H01L 31/107 (2006.01); H01L 31/12 (2006.01); H01L 31/10 (2006.01);
U.S. Cl.
CPC ...
G01J 1/42 (2013.01); G01S 17/10 (2013.01); H01L 31/10 (2013.01); H01L 31/107 (2013.01); H01L 31/12 (2013.01);
Abstract
Whether an optical delay on a space optical path is within a light emission cycle is accurately determined without narrowing a range of a measurable distance in the light emission cycle. A DFFthat divides an output pulse of a first DLL () by two to provide a first time offset and a DFFthat divides an output pulse of a second DLL () by two to provide a second time offset are included, and at least following mathematical formulas (1) and (2) are satisfied:1=½  (1)0<1<(−1)·1  (2)