-
公开(公告)号：US20190056440A1
公开(公告)日：2019-02-21
申请号：US15926734
申请日：2018-03-20
Inventor： Amar VELLANKI , Zhong YOU , Johann G. GABORIAU
Abstract: A method for measuring a capacitive sensor output may include applying an excitation signal to a capacitor of the capacitive sensor which causes generation of a modulated signal from a baseband signal, wherein the excitation signal is of a carrier frequency which is higher than frequency content of the baseband signal, demodulating the modulated signal to generate an intermediate signal representative of a capacitance of the capacitor wherein the demodulating is based, at least in part, on the excitation signal, converting the intermediate signal into a pulse-density modulated output signal with a pulse-density modulator, and shaping a noise transfer function of the pulse-density modulator to have an approximate zero at the carrier frequency.
-
Patent Agency Ranking
公开(公告)号：US20190011291A1
公开(公告)日：2019-01-10
申请号：US15926276
申请日：2018-03-20
Inventor： Vamsikrishna PARUPALLI , Zhong YOU , Gaurav AGARWAL , Vikrant ARUMUGAM , Johann G. GABORIAU , Nishant JAIN
IPC: G01D5/24 , G01R27/26 , H04L27/144 , G01R29/26
Abstract: A method for measuring a capacitive sensor output may include applying an excitation signal to a capacitor of the capacitive sensor which causes generation of a modulated signal from a baseband signal, wherein the excitation signal is of a carrier frequency which is higher than frequency content of the baseband signal, demodulating the modulated signal to generate an output signal representative of a capacitance of the capacitor wherein the demodulating is based, at least in part, on the excitation signal, determining whether noise in the modulated signal is caused by interference at approximately the carrier frequency, and in response to determining noise in the modulated signal is caused by interference at approximately the carrier frequency, modifying the carrier frequency to another frequency to reduce noise caused in the modulated signal by the interference.
-
公开(公告)号：US20250105745A1
公开(公告)日：2025-03-27
申请号：US18730943
申请日：2023-02-03
Inventor： Zhong YOU
IPC: H02M3/16
Abstract: A power management integrated circuit (PMIC) may have a loop controller configured to receive a first error signal from a first driver IC having a first driver powered from a supply voltage and configured to drive a first output signal responsive to a first input signal and a first error detector configured to generate the first error signal based between the supply voltage as detected locally to the first driver IC and a first reference voltage associated with the first driver, receive a second error signal from a second driver IC analogous to the first driver IC, and regulate the supply voltage based on the first and second error signals.
-
14.发明申请公开(公告)号：US20190302890A1
公开(公告)日：2019-10-03
申请号：US16294347
申请日：2019-03-06
Inventor： Srdjan MARIJANOVIC , Drew KINNEY , Luke LAPOINTE , Siddharth MARU , Tejasvi DAS , Anthony S. DOY , Zhong YOU
Abstract: A system may include a tactile actuator for providing tactile feedback and a resonant phase sensing system. The resonant phase sensing system may include a resistive-inductive-capacitive sensor and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and the tactile actuator. The resistive-inductive-capacitive sensor may be configured to measure phase information associated with the resistive-inductive-capacitive sensor, based on the phase information, detect an indication of human interaction with the system proximate to the resistive-inductive-capacitive sensor, and trigger the tactile actuator to generate tactile feedback responsive to detecting the indication of human interaction.
-
15.发明申请公开(公告)号：US20190302193A1
公开(公告)日：2019-10-03
申请号：US16354695
申请日：2019-03-15
Inventor： Siddharth MARU , Tejasvi DAS , Zhong YOU
Abstract: A system may include a resonant phase sensing system comprising a resistive-inductive-capacitive sensor and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor, and a compensation circuit. The measurement circuit may be configured to use a phase detector to measure phase information associated with the resistive-inductive-capacitive sensor and based on the phase information, determine a displacement of a metal plate relative to the resistive-inductive-capacitive sensor. The compensation circuit may be configured to detect a change in a physical property associated with the resistive-inductive-capacitive sensor other than the displacement and compensate the phase information to correct for the change in the physical property.
-
16.发明申请公开(公告)号：US20190137300A1
公开(公告)日：2019-05-09
申请号：US15926758
申请日：2018-03-20
Inventor： Amar VELLANKI , Vamsikrishna PARUPALLI , Emmanuel MARCHAIS , Zhong YOU
Abstract: A method may include receiving an analog modulated signal generated from a baseband signal modulated with a carrier signal wherein the baseband signal is representative of a capacitance of a capacitive sensor, converting the analog modulated signal into an equivalent digital modulated signal, demodulating the digital modulated signal to generate a demodulated digital signal representative of the capacitance of the capacitor wherein the demodulating is based, at least in part, on the carrier signal, and converting the demodulated digital signal into a digital output signal representative of a displacement of a plate of the capacitive sensor or a rate of displacement of a plate of the capacitive sensor.
-
-
-
-
-
Search Results
16
records
(took 0.015 seconds)
