公开(公告)号：US20190242704A1

公开(公告)日：2019-08-08

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

CPC classification number: 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：US20220414496A1

公开(公告)日：2022-12-29

申请号：US17360977

申请日：2021-06-28

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Luca GANDOLFI ,  Marco CASTELLANO ,  Marco LEO

IPC: G06N5/04 ,  G06N20/00 ,  G01P1/00 ,  G01C19/5712 ,  G01P15/08

Abstract: System, method, and circuitry for utilizing sequential input inertial sensor data to calculate recursive features for training a machine learning algorithm or for classifying the data as a known class. The recursive feature values of a current data sample are calculating based on comparisons between the current data sample value and previous recursive feature values. The recursive features include a recursive maximum, recursive minimum, recursive peak to peak, recursive average, recursive root mean square, and recursive variance.

公开(公告)号：US20210082212A1

公开(公告)日：2021-03-18

申请号：US17012495

申请日：2020-09-04

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Marco CASTELLANO ,  Marco LEO

IPC: G07C5/08 ,  G06N20/00 ,  B60W50/06 ,  H03M7/30

Abstract: A device includes sensing circuitry, compression circuitry, and a memory. The sensing circuitry, in operation, generates sensor data. The compression circuitry is coupled to the sensing circuitry, and, in operation, determines environmental contexts based on variation rates of sensor data and compresses sensor data based on determined environmental contexts. The compressed data is stored in the memory.

公开(公告)号：US20230048422A1

公开(公告)日：2023-02-16

申请号：US17870172

申请日：2022-07-21

Applicant: STMicroelectronics S.r.l.

Inventor： Enrico Rosario ALESSI ,  Marco LEO ,  Luca GANDOLFI ,  Fabio PASSANITI ,  Marco CASTELLANO

IPC: A61B5/308 ,  A61B5/024 ,  A61B5/366 ,  A61B5/11 ,  A61B5/0205 ,  A61B5/352

Abstract: A device for monitoring the health state is made in a chip including a semiconductor die integrating an electric potential sensor and a cardiac parameter determination unit. The potential sensor is configured to detect potential variations on the body of a living being and associated with a heart rhythm and to generate a cardiac signal. The cardiac parameter determination unit is configured to receive the cardiac signal and determine cardiac parameters indicative of a health state. In particular, the cardiac parameter determination unit is configured to detect triggering events and to determine features of the cardiac signal in time windows defined by the triggering events. The die also integrates a decision unit, configured to receive the cardiac parameters and generate a health signal based on a comparison with threshold values. The cardiac parameters include heart rate and QRS-complex.

公开(公告)号：US20190114274A1

公开(公告)日：2019-04-18

申请号：US16219803

申请日：2018-12-13

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Eugenio MILUZZI ,  Marco LEO ,  Marco CASTELLANO

IPC: G06F13/364 ,  G06F13/42 ,  G06F13/40

CPC classification number: G06F13/364 ,  G06F13/404 ,  G06F13/4282 ,  G06F13/4291 ,  G06F2213/0052

Abstract: A system includes a multi-conductor bus, a master device coupled to the multi-conductor bus, and at least one slave device coupled to the multi-conductor bus. The multi-conductor bus has a clock line and a data line. The master device is arranged to transmit an address configuration sequence, and the at least one slave device is arranged to configurably determine its own address based on at least one portion of the address configuration sequence. The at least one slave device has a physical address configuration input coupled to either a fixed voltage potential or a changing voltage potential. The at least one slave device is arranged with a first address during a pre-initialization state and arranged with a second address during a post-initialization state. During the post-initialization state, the first address and the second address are a same address when the address configuration sequence represents the first address and the first address and the second address are different addresses when the address configuration sequence does not represent the first address.