公开(公告)号：US11243078B2

公开(公告)日：2022-02-08

申请号：US16361680

申请日：2019-03-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Chihchuan Che ,  Yaesuk Jeong

IPC: G01C19/5776 ,  H03M1/06 ,  H03M1/08 ,  H03M1/18 ,  H03M1/50 ,  H03M1/82

Abstract: A signal processing circuit for a gyroscope apparatus is disclosed. The signal processing circuit includes a first electrode and a second electrode pairing with the first electrode. The signal processing circuit, being a negative feedback loop circuit, is configured to be connected with the first electrode and the second electrode and comprises a demodulator configured to convert a current from the first electrode into a voltage and demodulate the converted voltage to output a demodulated signal, an analog-to-digital converter configured to convert the demodulated signal from the demodulator into a digital signal, a proportional-integral-derivative controller that is connected to the analog-to-digital converter, a digital-to-analog converter configured to convert an output signal from the proportional-integral-derivative controller to an analog signal, and a modulator configured to be electrically connected with the second electrode and to be electrically connected with the digital-to-analog converter.

公开(公告)号：US20200300629A1

公开(公告)日：2020-09-24

申请号：US16361680

申请日：2019-03-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Chihchuan Che ,  Yaesuk Jeong

IPC: G01C19/5776 ,  H03M1/50 ,  H03M1/82 ,  H03M1/08 ,  H03M1/06 ,  H03M1/18

Abstract: A signal processing circuit for a gyroscope apparatus is disclosed. The signal processing circuit includes a first electrode and a second electrode pairing with the first electrode. The signal processing circuit, being a negative feedback loop circuit, is configured to be connected with the first electrode and the second electrode and comprises a demodulator configured to convert a current from the first electrode into a voltage and demodulate the converted voltage to output a demodulated signal, an analog-to-digital converter configured to convert the demodulated signal from the demodulator into a digital signal, a proportional-integral-derivative controller that is connected to the analog-to-digital converter, a digital-to-analog converter configured to convert an output signal from the proportional-integral-derivative controller to an analog signal, and a modulator configured to be electrically connected with the second electrode and to be electrically connected with the digital-to-analog converter.

公开(公告)号：US12244315B2

公开(公告)日：2025-03-04

申请号：US18149275

申请日：2023-01-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Duane Younkin ,  Ronald Joseph Lipka ,  Ryan Hennessy ,  Diego Emilio Serrano ,  Chihchuan Che ,  Amir Rahafrooz ,  Mohammad Maymandi Nejad

IPC: H03K5/00 ,  H03K21/02 ,  H03L1/02 ,  H03L7/083

Abstract: Systems and methods disclosed herein include a correction circuit. The correction circuit may include frequency division circuitry that is configured to receive and condition a reference signal. The correction circuit may include drive circuitry that is configured to receive the reference signal. The correction circuit may include a first resonator that is configured to receive the reference signal. The correction circuit may include sense circuitry that is configured to receive the reference signal from the first resonator. The correction circuit may include phase detector circuitry that is configured to generate at least one output signal based on receipt of a plurality of input signals from the drive circuitry and the sense circuitry. The correction circuit may include a proportional integral derivative controller that is configured to generate a temperature correction signal to correct frequency error in an oscillator based on receipt of the at least one output signal.