公开(公告)号：US11747142B2

公开(公告)日：2023-09-05

申请号：US16399842

申请日：2019-04-30

Applicant: STMICROELECTRONICS, INC. ,  STMICROELECTRONICS S.r.l.

Inventor： Mahaveer Jain ,  Mahesh Chowdhary ,  Roberto Mura ,  Nicola Matteo Palella ,  Leonardo Colombo

IPC: G01C21/16 ,  G01C21/20 ,  G01S19/49

CPC classification number: G01C21/165 ,  G01C21/20 ,  G01S19/49

Abstract: A device including microelectromechanical systems (MEMS) sensors are 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 forward axis of a sensor frame of the device and a forward axis of a vehicle frame using the data received from the MEMS sensors, the device can accurately calculate the location of a user or the vehicle of the device even without the GPS/GNSS signals. Accordingly, a device capable of tracking the location of the user riding in the vehicle in GPS/GNSS signals absent environment can be provided.

公开(公告)号：US10901529B2

公开(公告)日：2021-01-26

申请号：US16040331

申请日：2018-07-19

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.

公开(公告)号：US10708413B1

公开(公告)日：2020-07-07

申请号：US16703692

申请日：2019-12-04

Applicant: STMICROELECTRONICS, INC.

Inventor： Mahaveer Jain ,  Mahesh Chowdhary

IPC: H04M1/00 ,  H04M1/725

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.

公开(公告)号：US20180217660A1

公开(公告)日：2018-08-02

申请号：US15423318

申请日：2017-02-02

Applicant: STMicroelectronics, Inc.

Inventor： Sankalp Dayal ,  Mahesh Chowdhary ,  Mahaveer Jain

IPC: G06F1/32 ,  G06F1/20 ,  G06N99/00

CPC classification number: G06F1/3296 ,  G06F1/1692 ,  G06F1/206 ,  G06F1/3206 ,  G06F1/3231 ,  G06N20/00 ,  Y02D10/173

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.