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:
Feb. 14, 2017
Filed:
Apr. 08, 2013
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Tsunenori Shibata, Minowa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 19/56 (2012.01); G01C 25/00 (2006.01); G01C 19/5607 (2012.01); G01C 19/5628 (2012.01);
U.S. Cl.
CPC ...
G01C 19/56 (2013.01); G01C 19/5607 (2013.01); G01C 19/5628 (2013.01); G01C 25/00 (2013.01); Y10T 29/42 (2015.01);
Abstract
A sensor device includes a first sensor element which detects an angular velocity around z axis and a second sensor element which detects an angular velocity around x axis, the relationship fd>fdand fm<fmis satisfied, when the drive frequency of the first sensor element is set to fd, the drive frequency of the second sensor element is set to fd, the mistuned frequency of the first sensor element is set to fm, and the mistuned frequency of the second sensor element is set to fm