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:
Sep. 15, 2020
Filed:
Feb. 14, 2019
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Takayuki Kondo, Chino, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/347 (2006.01); B25J 19/02 (2006.01); G06T 7/60 (2017.01); G06T 7/73 (2017.01);
U.S. Cl.
CPC ...
G01D 5/34776 (2013.01); B25J 19/023 (2013.01); G01D 5/34738 (2013.01); G06T 7/60 (2013.01); G06T 7/74 (2017.01); G06T 2207/30204 (2013.01);
Abstract
Template matching with an image captured by the first imaging element is performed to obtain a first movement amount in a circumferential direction of the first mark, template matching with an image captured by the second imaging element is performed to obtain a second movement amount in a circumferential direction of the second mark, and a rotation angle is calculated and output by using the first movement amount and the second movement amount.