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:
Jun. 04, 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 ...
G01P 15/097 (2006.01); G01C 19/5783 (2012.01); G01D 1/16 (2006.01); G01P 1/02 (2006.01); H03M 3/00 (2006.01);
U.S. Cl.
CPC ...
G01P 15/097 (2013.01); G01C 19/5783 (2013.01); G01P 1/023 (2013.01); H03M 3/378 (2013.01); G01D 1/16 (2013.01); H03M 3/30 (2013.01);
Abstract
A vibration rectification error correction device includes a first filter that operates in synchronization with the measured signal, and a second filter that operates in synchronization with the reference signal, in which the first filter generates a third signal based on a first signal having a first group delay amount and a second signal having a second group delay amount, the second filter receives a signal based on the third signal and outputs a fourth signal, and a first vibration rectification error and a second vibration rectification error have different polarities.