公开(公告)号：US10921122B2

公开(公告)日：2021-02-16

申请号：US15889891

申请日：2018-02-06

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Marco Leo ,  Paolo Rosingana ,  Marco Castellano

IPC: G01C9/06 ,  G01P15/18 ,  G06F13/24

Abstract: A sensor includes an accelerometer, which, in operation, generates accelerometer data, and digital signal processing circuitry. The digital signal processing circuitry, in operation, generates, based on the generated accelerometer data, a value indicative of a cosine of an angle between an acceleration vector associated with current accelerometer data and a reference acceleration vector, compares the generated value indicative of the cosine of the angle between the vector associated with current accelerometer data and the reference acceleration vector with one or more thresholds and generates a tilt signal based on the comparison of the generated value indicative of the cosine of the angle between the vector associated with current accelerometer data and the reference acceleration vector with the one or more thresholds. The tilt signal may be used as an interrupt signal to an application processor.

公开(公告)号：US20210033402A1

公开(公告)日：2021-02-04

申请号：US16932526

申请日：2020-07-17

Applicant: STMicroelectronics S.r.l.

Inventor： Paolo Rosingana ,  Alessandra Maria Rizzo Piazza Roncoroni ,  Federico Rizzardini ,  Lorenzo Bracco ,  Stefano Paolo Rivolta ,  Marco Bianco

IPC: G01C21/18 ,  G06F1/3206 ,  G06F3/0346

Abstract: An embodiment inertial measurement system includes: at least one motion sensor to output motion data with an output data rate (ODR) period; and a control unit coupled to the motion sensor to control operation thereof based on a power mode switching, according to which each ODR period includes: a first phase, in which the motion sensor is controlled in a condition of low power consumption; and a subsequent measurement phase, in which the motion sensor is controlled to perform measurements for generation of measurement data. The control unit adaptively adjusts the duration of the ODR period based on at least one check related to the measurement data generated during the measurement phase.

公开(公告)号：US09672155B2

公开(公告)日：2017-06-06

申请号：US14664630

申请日：2015-03-20

Applicant: STMicroelectronics S.r.l.

Inventor： Marco Leo ,  Paolo Rosingana ,  Marco Castellano

IPC: G06F12/00 ,  G06F12/0875 ,  G01D9/00

CPC classification number: G06F12/0875 ,  G01D9/005 ,  G06F2212/1056 ,  G06F2212/451

Abstract: A plurality of sensors provide respective output data rates, with a first sensor that has a highest output data rate, while one or more other sensors have output data rates that are submultiples of the aforesaid highest output data rate. The data signals coming from the sensors are stored in a memory, e.g., a FIFO memory, by storing the data signals of the first sensor at the aforesaid highest output data rate, accompanying storage of the data signals coming from said first sensor with storage of the data signals coming from the sensors as supplied by said other sensors at the aforesaid submultiple output data rates, so that the data signals are stored in the memory according to a repeated pattern that is common to the various sensors.