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:
Jan. 23, 2024
Filed:
Nov. 18, 2021
Applicant:
Invensense, Inc., San Jose, CA (US);
Inventor:
Aurelio Pellegrini, Sestola, IT;
Assignee:
InvenSense, Inc., San Jose, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01P 15/125 (2006.01); G01C 19/5712 (2012.01); G01P 1/00 (2006.01); G01D 1/08 (2006.01); G01H 1/14 (2006.01); G01D 1/02 (2006.01); G01D 1/16 (2006.01);
U.S. Cl.
CPC ...
G01P 15/125 (2013.01); G01C 19/5712 (2013.01); G01P 1/00 (2013.01); G01D 1/02 (2013.01); G01D 1/08 (2013.01); G01D 1/16 (2013.01); G01H 1/14 (2013.01);
Abstract
A modified version of a MEMS self-test procedure is presented that can be used to detect the amplitude and frequency of an external vibration from an ambient environment. The method implements processing circuitry that correlates an output sense signal, s(t), with a plurality of periodic signal portions and a plurality of shifted periodic signal portions to generate a plurality of correlation values. A frequency associated with the external vibration is determined based on the plurality of correlation values.