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:
Feb. 21, 2006
Filed:
Mar. 26, 2004
Hajime Ito, Ichinomiya, JP;
Hajime Ito, Ichinomiya, JP;
Denso Corporation, Kariya, JP;
Abstract
An angular velocity sensor device includes a switch (S) for selecting a first or second driving signal mutually opposite in phase applied to driving electrodes (D, D) to oscillate a weight part () in a first direction. An adding circuit () adjusts the amplitude of the driving signal selected and adds it to a monitor signal reflecting the oscillating state of the weight part (). A noise signal component appearing in the output signal of the adding circuit () is adjusted to a minimum and the output signal is supplied as a feedback signal to a self-oscillating circuit () for reducing the noise signal influence on the oscillating drive of the weight part.