公开(公告)号：US20230384343A1

公开(公告)日：2023-11-30

申请号：US17827395

申请日：2022-05-27

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Federico RIZZARDINI ,  Lorenzo BRACCO

IPC: G01P15/18 ,  G01D5/14 ,  G09F9/30

CPC classification number: G01P15/18 ,  G01D5/145 ,  G09F9/301

Abstract: The present disclosure is directed to a device and method for lid angle detection that is accurate even if the device is activated in an upright position. While the device is in a sleep state, first and second sensor units measure acceleration and angular velocity, and calculate orientations of respective lid components based on the acceleration and angular velocity measurements. Upon the device exiting the sleep state, a processor estimates the lid angle using the calculated orientations, sets the estimated lid angle as an initial lid angle, and updates the initial lid angle using, for example, two accelerometers; two accelerometers and two gyroscopes; two accelerometers and two magnetometers; or two accelerometers, two gyroscopes, and two magnetometers.

公开(公告)号：US20230125175A1

公开(公告)日：2023-04-27

申请号：US18047187

申请日：2022-10-17

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Stefano Paolo RIVOLTA ,  Roberto MURA ,  Lorenzo BRACCO ,  Federico RIZZARDINI

IPC: G06F1/16

Abstract: The present disclosure is directed to a detection method of a first or second state of a foldable electronic device including a first and a second hardware element tiltable to each other and accommodating a first and a second electrode which are in contact with each other when the foldable electronic device is in the first state and at a distance from each other otherwise. The detection method includes: acquiring a first and a second charge variation signal indicative of environmental electric/electrostatic charge variations detected by the first and second electrodes; generating a differential signal indicative of a difference between the first and the second charge variation signals; generating, as a function of the differential signal, one or more feature signals; and generating, as a function of the one or more feature signals, a contact signal indicative of the first or second states of the foldable electronic device.

公开(公告)号：US20220342486A1

公开(公告)日：2022-10-27

申请号：US17862937

申请日：2022-07-12

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Federico RIZZARDINI ,  Lorenzo BRACCO ,  Stefano Paolo RIVOLTA

IPC: G06F3/01 ,  G01P15/14 ,  G06F1/16

Abstract: An electronic device has an input which, in operation, receives an input stream of accelerometer data samples indicative of acceleration values along at least one axis. The devices includes circuitry, coupled to the input. The circuitry, in operation, executes an automatic-learning algorithm on blocks of samples of the input stream of accelerometer data samples to identify, for each block, a corresponding condition-of-user-movement from among a plurality of determined conditions-of-user-movement. The circuitry generates a plurality of streams of samples based on the input stream of accelerometer data samples, and for each condition of movement identified, selects a corresponding stream of samples of the plurality of streams of samples. The circuitry executes a wrist-tilt gesture detection algorithm using samples of the selected stream of the plurality of streams of samples.

公开(公告)号：US20220270593A1

公开(公告)日：2022-08-25

申请号：US17183288

申请日：2021-02-23

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Stefano Paolo RIVOLTA ,  Federico RIZZARDINI ,  Lorenzo BRACCO ,  Roberto MURA

IPC: G10L15/16 ,  G06N20/10 ,  G10L19/26 ,  G06N5/00

Abstract: The present disclosure is directed to a device and method for detecting presence or absence of human speech. The device and method utilize a low-power accelerometer. The device and method generate an acceleration signal using the accelerometer, filter the acceleration signal with a band pass filter or a high pass filter, determine at least one calculation of the filtered acceleration signal, detect a presence or absence of a voice based on the at least one calculation, and output a detection signal that indicates the presence or absence of the voice. The device and method are well suited for portable audio devices, such as true wireless stereo headphones, that have a limited power supply.

公开(公告)号：US20210255686A1

公开(公告)日：2021-08-19

申请号：US17168110

申请日：2021-02-04

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Stefano Paolo RIVOLTA ,  Marco BIANCO ,  Roberto MURA ,  Federico RIZZARDINI ,  Lorenzo BRACCO

IPC: G06F1/3206 ,  G06F1/3296 ,  G06F1/16 ,  G06N20/00

Abstract: An electronic device has sensing circuitry and control circuitry. The control circuitry generates, based on generated sensor data, information indicative of movement of the electronic device. The control circuitry generates control signals to control operation of the electronic device in a plurality of power states, including a working-power state, an intermediate-power state and a low-power state, based on the information indicative of movement.