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. 09, 2025
Filed:
Mar. 22, 2023
Seiko Epson Corporation, Tokyo, JP;
Takashi Aoyama, Chino, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A physical quantity detection circuit includes: a drive circuit configured to apply a drive signal, which includes a first frequency component and a second frequency component having a frequency different from a frequency of the first frequency component, to a drive electrode of a physical quantity detection element; a physical quantity detection signal output circuit configured to output a physical quantity detection signal, based on a first physical quantity component output from a first detection electrode of the physical quantity detection element and a second physical quantity component output from a second detection electrode of the physical quantity detection element; and a first failure diagnosis signal output circuit configured to output a first failure diagnosis signal generated based on a first electrostatic leakage component resulting from the second frequency component propagating to the first detection electrode and a second electrostatic leakage component resulting from the second frequency component propagating to the second detection electrode.