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.

公开(公告)号：US20240090800A1

公开(公告)日：2024-03-21

申请号：US17933739

申请日：2022-09-20

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Stefano Paolo RIVOLTA ,  Roberto MURA

IPC: A61B5/1455 ,  A61B5/00 ,  A61B5/0205 ,  G01R31/28

CPC classification number: A61B5/14552 ,  A61B5/0205 ,  A61B5/681 ,  G01R31/2879 ,  A61B2560/0223

Abstract: The present disclosure is directed to a wearable electronic device, such as a watch, that includes one or more optical sensors. In order to determine accuracy of measurements by the optical sensors, the device detects whether or not the optical sensors are in physical contact with the user's skin. The device detects a level of contact between the user's skin and the optical sensors based on electrostatic charge variation measurements, and generates a contact reliability index (CRI) based on the level of contact. Operation of the optical sensors are adjusted based on the CRI.

公开(公告)号：US20240045514A1

公开(公告)日：2024-02-08

申请号：US17882206

申请日：2022-08-05

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Stefano Paolo RIVOLTA ,  Roberto MURA

IPC: G06F3/0346 ,  G06F1/3206 ,  G01P15/18 ,  G06F1/16

CPC classification number: G06F3/0346 ,  G06F1/3206 ,  G01P15/18 ,  G06F1/1618 ,  G06F1/1677

Abstract: The present disclosure is directed to pick-up state detection for an electronic device, such as a laptop. In a pick-up state, the device is picked or lifted up from a surface, such as a table. A power state of the device is adjusted in response to detecting the pick-up state. For example, the device is in a hibernate state while set on the table, and is switched to a working state in response to detecting the pick-up state.

公开(公告)号：US20230359262A1

公开(公告)日：2023-11-09

申请号：US18356963

申请日：2023-07-21

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Stefano Paolo RIVOLTA ,  Roberto MURA ,  Marco BIANCO

IPC: G06F1/3231 ,  G01P15/14 ,  G01R29/12

CPC classification number: G06F1/3231 ,  G01P15/14 ,  G01R29/12

Abstract: The present disclosure is directed to a device configured to detect whether the device is in a bag or being taken out of the bag. The device determines whether the device is in a bag or being taken out of the bag based on motion measurements generated by a motion sensor and electrostatic charge measurements generated by an electrostatic charge sensor. By using both distance measurements and motion measurements, the device is able to detect whether the device is in the bag or being taken out of the bag with high efficiency, accuracy, and robustness.

公开(公告)号：US20230023149A1

公开(公告)日：2023-01-26

申请号：US17379743

申请日：2021-07-19

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Stefano Paolo RIVOLTA ,  Roberto MURA ,  Marco BIANCO

IPC: G06F1/3231 ,  G01P15/14 ,  G01R29/12

Abstract: The present disclosure is directed to a device configured to detect whether the device is in a bag or being taken out of the bag. The device determines whether the device is in a bag or being taken out of the bag based on motion measurements generated by a motion sensor and electrostatic charge measurements generated by an electrostatic charge sensor. By using both distance measurements and motion measurements, the device is able to detect whether the device is in the bag or being taken out of the bag with high efficiency, accuracy, and robustness.

公开(公告)号：US20220214168A1

公开(公告)日：2022-07-07

申请号：US17144016

申请日：2021-01-07

Applicant: STMICROELECTRONICS S.r.l.

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

IPC: G01C19/60 ,  H03K17/945 ,  G01B7/00

Abstract: The present disclosure is directed to a device configured to detect whether the device is in a bag or outside of the bag. The device determines whether the device is in or outside of the bag based on distance measurements generated by at least one proximity sensor and motion measurements generated by at least one motion sensor. By using both distance measurements and motion measurements, the device is able to detect whether the device is in the bag or outside of the bag with high accuracy and robustness.

公开(公告)号：US20220174203A1

公开(公告)日：2022-06-02

申请号：US17527989

申请日：2021-11-16

Applicant: STMICROELECTRONICS S.r.l.

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

IPC: H04N5/235 ,  H04N5/232

Abstract: A device includes a charge variation sensor having at one or more electrodes. The charge variation sensor, in operation, generates a charge variation signal indicative of changes in an electric or electrostatic charge induced on the one or more electrodes by an alternating current power source. Processing circuitry, coupled to the charge variation sensor, generates a frequency spectrum signal based on the charge variation signal and identifies a frequency of operation associated with the alternating current power source based on the generated frequency spectrum signal. A control signal is generated based on the identified frequency of operation. An image acquisition device sets an image acquisition frequency based on the control signal.