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:
Dec. 10, 2024
Filed:
Dec. 27, 2021
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Masayoshi Todorokihara, Suwa, JP;
Assignee:
SEIKO EPSON CORPORATION, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 1/12 (2006.01); G01D 1/16 (2006.01); G01P 15/08 (2006.01); H03M 3/00 (2006.01);
U.S. Cl.
CPC ...
G01P 15/0802 (2013.01); G01D 1/12 (2013.01); G01D 1/16 (2013.01); G01P 2015/0865 (2013.01); G01P 2015/0882 (2013.01); H03M 3/30 (2013.01);
Abstract
A signal processing method includes a processing target signal generation step of generating a processing target signal which is a time-series signal based on a source signal which is a time-series signal output from an object, and a vibration rectification error calculation step of calculating a plurality of vibration rectification errors by performing product-sum operation processing of a first signal based on the processing target signal and a second signal based on a phase-shifted signal of the processing target signal a plurality of times by changing a shift amount.