公开(公告)号：US20250035668A1

公开(公告)日：2025-01-30

申请号：US18595004

申请日：2024-03-04

Applicant: STMicroelectronics International N.V.

Inventor： Stefano Paolo Rivolta ,  Piergiorgio Arrigoni

IPC: G01P15/18 ,  G01C19/00 ,  G01P13/00

Abstract: A method for determining whether an electronic device is located on a stationary surface includes generating, by a first motion sensor of an electronic device, first sensor data over an acquisition time window. The method includes determining, by a first feature detection circuit of the electronic device, at least one first orientation-independent feature for the acquisition time window based on the first sensor data. The method further includes executing, by a first classifying circuit of the electronic device, a first machine learning classification to determine whether the electronic device is steady or is in motion. And the method further includes, in response to determining the electronic device is steady, executing, by a second classifying circuit of the electronic device, a second machine learning classification to determine whether the electronic device is on a stationary surface or is on a semi-stationary surface based on the at least one first orientation-independent feature.

公开(公告)号：US20250035665A1

公开(公告)日：2025-01-30

申请号：US18357851

申请日：2023-07-24

Applicant: STMicroelectronics International N.V.

Inventor： Stefano Paolo Rivolta

IPC: G01P13/02 ,  G01P15/14 ,  G06F1/16

Abstract: A method includes generating, by a first motion sensor of an electronic device, first sensor data over an acquisition time window; generating first process data by processing the first sensor data to determine whether or not the electronic device is located on a stationary surface; determining whether or not the electronic device is in a stable state based on the first process data. The stable state is indicative of whether the electronic device has remained on a stationary surface or not for a first predefined time. The method includes stopping the processing of the first sensor data in response to determining that the electronic device has been in the stable state for a second predefined time.

公开(公告)号：US12032747B1

公开(公告)日：2024-07-09

申请号：US18167500

申请日：2023-02-10

Applicant: STMicroelectronics International N.V.

Inventor： Stefano Paolo Rivolta ,  Roberto Mura ,  Edoardo Nagali

IPC: G06F3/01 ,  G01V8/00

CPC classification number: G06F3/017 ,  G01V8/005

Abstract: The present disclosure is directed to devices and methods for detecting dimming gestures using infrared detection. Infrared signals are detected using a thermal metal-oxide-semiconductor (TMOS) infrared (IR) sensor solution. The TMOS IR sensor is highly accurate and has low power consumptions compared to traditional IR sensors that utilize IR receivers.

公开(公告)号：US20250027970A1

公开(公告)日：2025-01-23

申请号：US18353678

申请日：2023-07-17

Applicant: STMicroelectronics International N.V.

Inventor： Stefano Paolo Rivolta ,  Federico Rizzardini ,  Lorenzo Bracco ,  Marco Bianco ,  Tae-gil Kang

IPC: G01P15/08

Abstract: According to an embodiment, a sensor including a machine learning core (MLC) and a finite state machine (FSM) circuit for detecting a shock event is provided. The MLC continuously calculates a value based on the change in velocity. The FSM circuit compares the value to a first threshold and generates a first interrupt if it is greater than the first threshold. The FSM circuit then compares the value to a second threshold less than the first threshold and generates a second interrupt if it is less than or equal to the second threshold after the first interrupt. The MLC calculates a maximum value between the first and second interrupts and stores it in a register, which is read by an application processor of a host device after receiving the second interrupt. The maximum acceleration norm value is reset after a delay after the second interrupt is generated.