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1.发明授权公开(公告)号：US11834054B2
公开(公告)日：2023-12-05
申请号：US17470962
申请日：2021-09-09
Applicant: STMICROELECTRONICS S.r.l. , STMICROELECTRONICS, INC. , STMicroelectronics (Grand Ouest) SAS
Inventor： Nicola Matteo Palella , Leonardo Colombo , Andrea Donadel , Roberto Mura , Mahaveer Jain , Joëlle Philippe
IPC: B60W40/11 , B60W40/101 , B60W40/112 , B60W40/114 , G01S19/47
CPC classification number: B60W40/101 , B60W40/11 , B60W40/112 , B60W40/114 , G01S19/47 , B60W2520/28
Abstract: A system includes inertial sensors and a GPS. The system generates a first estimated vehicle velocity based on motion data and positioning data, generates a second estimated vehicle velocity based on the processed motion data and the first estimated vehicle velocity, and generates fused datasets indicative of position, velocity and attitude of a vehicle based on the processed motion data, the positioning data and the second estimated vehicle velocity. The generating the second estimated vehicle velocity includes: filtering the motion data, transforming the filtered motion data in a frequency domain based on the first estimated vehicle velocity, generating spectral power density signals, generating an estimated wheel angular frequency and an estimated wheel size based on the spectral power density signals, and generating the second estimated vehicle velocity as a function of the estimated wheel angular frequency and the estimated wheel size.
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公开(公告)号：US11199410B2
公开(公告)日：2021-12-14
申请号：US16399829
申请日：2019-04-30
Applicant: STMICROELECTRONICS, INC.
Inventor： Mahaveer Jain , Mahesh Chowdhary
Abstract: A device including microelectromechanical systems (MEMS) sensors is used in dead reckoning in conditions where Global Positioning System (GPS) signals or Global Navigation Satellite System (GNSS) signals are lost. The device is capable of tracking the location of the device after the GPS/GNSS signals are lost by using MEMS sensors such as accelerometers and gyroscopes. By calculating a misalignment angle between a sensor frame of the device with either the movement direction of the vehicle or the walking direction of a pedestrian using the MEMS sensors, the device can accurately calculate the location of a user of the device even without the GPS/GNSS signals. Accordingly, a device capable of tracking the location of a pedestrian and a user riding in a vehicle without utilizing GPS/GNSS signals can be provided.
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公开(公告)号：US20210103345A1
公开(公告)日：2021-04-08
申请号：US17122999
申请日：2020-12-15
Applicant: STMICROELECTRONICS S.r.l. , STMICROELECTRONICS, INC.
Inventor： Stefano Paolo Rivolta , Mahaveer Jain , Ashish Bhargava
IPC: G06F3/0346 , G06F3/0487
Abstract: Digital signal processing circuitry, in operation, determines, based on accelerometer data, a carry-position of a device. Double-tap detection parameters are set using the determined carry-position. Double-taps are detected using the set double-tap detection parameters. In response to detection of a double-tap, control signals, such as a flag or an interrupt signal, are generated and used to control operation of the device. For example, a device may enter a wake mode of operation in response to detection of a double-tap.
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公开(公告)号：US11579710B2
公开(公告)日：2023-02-14
申请号：US17122999
申请日：2020-12-15
Applicant: STMICROELECTRONICS S.r.l. , STMICROELECTRONICS, INC.
Inventor： Stefano Paolo Rivolta , Mahaveer Jain , Ashish Bhargava
IPC: G06F3/0346 , G06F3/0487
Abstract: Digital signal processing circuitry, in operation, determines, based on accelerometer data, a carry-position of a device. Double-tap detection parameters are set using the determined carry-position. Double-taps are detected using the set double-tap detection parameters. In response to detection of a double-tap, control signals, such as a flag or an interrupt signal, are generated and used to control operation of the device. For example, a device may enter a wake mode of operation in response to detection of a double-tap.
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5.发明授权公开(公告)号：US10802572B2
公开(公告)日：2020-10-13
申请号：US15423318
申请日：2017-02-02
Applicant: STMicroelectronics, Inc.
Inventor： Sankalp Dayal , Mahesh Chowdhary , Mahaveer Jain
IPC: G06F1/3206 , G06F1/3296 , G06F1/20 , G06N20/00 , G06F1/16 , G06F1/3231
Abstract: A system may include a motion sensor configured to generate a motion signal in response to a movement of an electronic device, and at least one feature detection circuit configured to determine at least one metric based on the motion signal. The system may further include a classifying circuit configured to determine whether the electronic device is in contact with a human body based on the at least one metric.
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Patent Agency Ranking
公开(公告)号：US10530920B1
公开(公告)日：2020-01-07
申请号：US16407947
申请日：2019-05-09
Applicant: STMICROELECTRONICS, INC.
Inventor： Mahaveer Jain , Mahesh Chowdhary
Abstract: A portable device includes one or more memories and travel mode control circuitry coupled to the one or more memories. The travel mode control circuitry, in operation, monitors motion data and temperature data to detect a first travel state of the device. When the first travel state of the device is detected, motion data and pressure data are monitored to detect a transition from the first travel state to a second travel state of the device. When the transition to the second travel state of the device is detected, one or more control signals are generated to cause the device to enter a first travel mode of operation.
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公开(公告)号：US10151805B2
公开(公告)日：2018-12-11
申请号：US14974402
申请日：2015-12-18
Inventor： Mahaveer Jain , Mahesh Chowdhary
Abstract: A method includes acquiring magnetic data from a magnetometer, processing the magnetic data to perform robust calibration, and generating optimum calibration parameters using a calibration status indicator. To that end, the method includes generating a calibration status indicator as a function of time elapsed since a last calibration and variation in total magnetic field in previously stored magnetic data, detecting anomalies, and extracting a sparse magnetic data set using comparison between the previously stored magnetic data and the magnetic data. Calibration parameters are generated for the magnetometer using a calibration method as a function of the magnetic data set. The calibration parameters are stored based on performing a validation and stability check on the calibration parameters, and weighted with the previously stored calibration parameters to produce weighted calibration parameters. Calibration settings are generated as a function of the weighted calibration parameters, if the weighted calibration parameters were produced.
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公开(公告)号：US20170176546A1
公开(公告)日：2017-06-22
申请号：US14974402
申请日：2015-12-18
Inventor： Mahaveer Jain , Mahesh Chowdhary
IPC: G01R33/00
CPC classification number: G01R33/0035 , G01R35/005
Abstract: A method includes acquiring magnetic data from a magnetometer, processing the magnetic data to perform robust calibration, and generating optimum calibration parameters using a calibration status indicator. To that end, the method includes generating a calibration status indicator as a function of time elapsed since a last calibration and variation in total magnetic field in previously stored magnetic data, detecting anomalies, and extracting a sparse magnetic data set using comparison between the previously stored magnetic data and the magnetic data. Calibration parameters are generated for the magnetometer using a calibration method as a function of the magnetic data set. The calibration parameters are stored based on performing a validation and stability check on the calibration parameters, and weighted with the previously stored calibration parameters to produce weighted calibration parameters. Calibration settings are generated as a function of the weighted calibration parameters, if the weighted calibration parameters were produced.
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公开(公告)号：US12134361B2
公开(公告)日：2024-11-05
申请号：US17717855
申请日：2022-04-11
Applicant: STMICROELECTRONICS, INC.
Inventor： Mahaveer Jain , Mahesh Chowdhary
IPC: B60W40/10 , B60R16/023 , B60R16/03
Abstract: The present disclosure is directed to a device and method for detection of motion events including towing of the vehicle, jacking of the vehicle, and the vehicle being hit by another object. Processing is split between an MCU and a sensor unit. After the vehicle is turned off and before the MCU enters a sleep mode, the MCU calculates a gravity vector of the vehicle using accelerometer data, calculates threshold values based on the gravity vector, and saves the threshold values. After the MCU enters the sleep mode, the sensor unit subsequently monitors and detects motion events with the saved threshold values.
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公开(公告)号：US11815568B2
公开(公告)日：2023-11-14
申请号：US17135628
申请日：2020-12-28
Applicant: STMicroelectronics, Inc.
Inventor： Mahaveer Jain , Mahesh Chowdhary
CPC classification number: G01R33/0035 , G01C25/005
Abstract: An electronic device includes a magnetometer that outputs magnetometer sensor signals and a gyroscope that outputs gyroscope sensor signals. The electronic device includes a magnetometer calibration module that calibrates the magnetometer utilizing the gyroscope sensor signals. The electronic device generates a first magnetometer calibration parameter based on a Kalman filter process. The electronic device generates a second magnetometer calibration parameter based on a least squares estimation process.
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