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. 21, 2021
Filed:
Apr. 10, 2020
Applicant:
Invensense, Inc., San Jose, CA (US);
Inventors:
Pietro Scafidi, Milan, IT;
Luca Coronato, Corsico, IT;
Assignee:
InvenSense, Inc., San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01C 19/5712 (2012.01); G01C 25/00 (2006.01);
U.S. Cl.
CPC ...
G01C 19/5712 (2013.01); G01C 25/00 (2013.01);
Abstract
An optimal demodulation phase for extracting an in-phase component of a MEMS gyroscope output signal is determined through a test procedure. During the test procedure, multiple different rotation rate patterns such as different directions of rotation and different rotation rates are applied to the MEMS gyroscope while the MEMS gyroscope output signal is demodulated based on demodulation phases near a predicted quadrature phase for the MEMS gyroscope. The measured gyroscope outputs are used to calculate an optimal demodulation phase for the MEM gyroscope.