Invention Grant
- Patent Title: Vibration type gyroscope
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Application No.: US16362045Application Date: 2019-03-22
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Publication No.: US11262212B2Publication Date: 2022-03-01
- Inventor: Yoshikazu Furuta , Nobuaki Matsudaira , Tomohiro Nezuka
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Posz Law Group, PLC
- Priority: JPJP2018-073832 20180406
- Main IPC: G01C19/567
- IPC: G01C19/567 ; G01C25/00

Abstract:
A gyroscope includes a MEMS sensor having a drive signal input terminal, a drive signal output terminal, and a sense signal output terminal. The gyroscope further includes a quadrature demodulator that demodulates a modulated sense signal and offset canceller circuits that cancel a direct current offset component included in an in-phase signal and a quadrature signal of the sense signal. The gyroscope has a quadrature error detector that detects a quadrature error based on the signals input from the offset canceller circuits and outputs an error signal. The gyroscope also has an IQ corrector circuit that receives the in-phase signal and the quadrature signal of the sense signal as inputs, and outputs a phase signal with a phase based on the error signal.
Public/Granted literature
- US20190310106A1 VIBRATION TYPE GYROSCOPE Public/Granted day:2019-10-10
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