公开(公告)号：US12259760B2

公开(公告)日：2025-03-25

申请号：US18183464

申请日：2023-03-14

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Federico Rizzardini ,  Lorenzo Bracco

IPC: G06F1/16 ,  G01C1/00 ,  G01C9/08 ,  G01C19/5705 ,  G01P3/44 ,  G06F1/3246 ,  H04M1/02

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：US20250068263A1

公开(公告)日：2025-02-27

申请号：US18944811

申请日：2024-11-12

Applicant: STMicroelectronics S.r.l.

Inventor： Stefano Paolo Rivolta ,  Federico Rizzardini

IPC: G06F3/0346 ,  G06F3/0354

Abstract: A method includes receiving electrostatic sensor data in a processor of an electronic device from an electrostatic sensor mounted behind a touchscreen of the electronic device and using the electrostatic sensor data to determine when the touchscreen is being used. Based on whether or not the touchscreen is being used, an on-table detection (OTD) algorithm is selected from a plurality of available OTD algorithms. In one or more examples, the OTD algorithm may also be selected based on the current device mode of the electronic device, which may be determined from a lid angle, a screen angle, and a keyboard angle of the electronic device. The selected OTD algorithm is run to determine whether or not the electronic device is located on a stationary or stable surface.

公开(公告)号：US12007521B2

公开(公告)日：2024-06-11

申请号：US17867175

申请日：2022-07-18

Applicant: STMicroelectronics S.r.l.

Inventor： Federico Rizzardini ,  Lorenzo Bracco

IPC: G01V3/08 ,  H02J50/20

CPC classification number: G01V3/088 ,  H02J50/20

Abstract: A detection method of a user of an apparatus is provided in which the apparatus is coupled to a charge variation sensor having a control unit and an electrode to detect an electric/electrostatic charge variation of the user. The detection method includes acquiring, through the electrode, a charge variation signal indicative of the presence of the user. A filtered signal is generated by filtering the charge variation signal. A feature signal is generated as a function of the filtered signal. A movement signal indicative of a movement of the user is generated as a function of the feature signal. A presence signal indicative of the presence of the user is generated as a function of the movement signal.

公开(公告)号：US12007237B2

公开(公告)日：2024-06-11

申请号：US18300296

申请日：2023-04-13

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Federico Rizzardini ,  Stefano Paolo Rivolta ,  Lorenzo Bracco ,  Marco Bianco

IPC: G01B7/30 ,  G01D5/16 ,  G01D18/00 ,  G05B17/02 ,  G06F1/16

CPC classification number: G01B7/30 ,  G01D5/16 ,  G01D18/00 ,  G05B17/02 ,  G06F1/1616

Abstract: A method is provided for controlling an electronic apparatus on the basis of a value of a lid angle between a first hardware element accommodating a first magnetometer and a second hardware element accommodating a second magnetometer. The method includes acquiring, through the magnetometers, first signals representing an orientation of the hardware elements. A calibration parameter indicative of a condition of calibration of the magnetometers is generated on the basis of the first signals. A reliability value indicative of a condition of reliability of the first signals is generated on the basis of the first signals. A first intermediate value of the lid angle is calculated on the basis of the first signals. A current value of the lid angle is calculated on the basis of the calibration parameter, of the reliability value, and of the first intermediate value, and the electronic apparatus is controlled on the basis of the current value.

公开(公告)号：US11821732B2

公开(公告)日：2023-11-21

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: H01J37/32 ,  G01C19/60 ,  G01B7/00 ,  H03K17/945 ,  H01J37/317

CPC classification number: G01C19/60 ,  G01B7/003 ,  H03K17/945

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：US11592911B2

公开(公告)日：2023-02-28

申请号：US17191320

申请日：2021-03-03

Applicant: STMicroelectronics S.r.l.

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

IPC: G06F3/0346 ,  G06F3/038 ,  G01P15/18

Abstract: A pointing electronic device is provided with: an inertial measurement module, to generate motion input data, indicative of motion of the pointing electronic device, at an input data rate; a pointing determination unit, to implement a pointing algorithm at a processing data rate based on the motion input data, to generate screen-frame displacement data corresponding to 3D-space movements of the pointing electronic device, the processing data rate being higher than the input data rate. The pointing electronic device is further provided with a rate upscaling unit, interposed between the inertial measurement module and the pointing determination unit, to implement a data-rate upscaling of the motion input data, in order to generate upscaled motion input data to be processed by the pointing determination unit at a data rate matching the processing data rate, via a predictive data reconstruction of missing samples based on the actual motion input data.

公开(公告)号：US11543248B2

公开(公告)日：2023-01-03

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: G06F3/038 ,  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：US11422634B2

公开(公告)日：2022-08-23

申请号：US17067519

申请日：2020-10-09

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：US20210286447A1

公开(公告)日：2021-09-16

申请号：US17191320

申请日：2021-03-03

Applicant: STMicroelectronics S.r.l.

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

IPC: G06F3/0346 ,  G06F3/038

Abstract: A pointing electronic device is provided with: an inertial measurement module, to generate motion input data, indicative of motion of the pointing electronic device, at an input data rate; a pointing determination unit, to implement a pointing algorithm at a processing data rate based on the motion input data, to generate screen-frame displacement data corresponding to 3D-space movements of the pointing electronic device, the processing data rate being higher than the input data rate. The pointing electronic device is further provided with a rate upscaling unit, interposed between the inertial measurement module and the pointing determination unit, to implement a data-rate upscaling of the motion input data, in order to generate upscaled motion input data to be processed by the pointing determination unit at a data rate matching the processing data rate, via a predictive data reconstruction of missing samples based on the actual motion input data.

公开(公告)号：US10942578B2

公开(公告)日：2021-03-09

申请号：US16566759

申请日：2019-09-10

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Stefano Paolo Rivolta ,  Federico Rizzardini

IPC: G06F3/01 ,  H04M1/725

Abstract: A system recognizes a gesture of bringing a mobile electronic device to a user ear. The system may be integrated in the mobile electronic device and is provided with a movement sensor which provides a movement signal indicative of the movement of the mobile electronic device. A pressure sensor provides a pressure signal indicative of a pressure acting on the mobile electronic device during the movement. A processing stage performs a joint processing of the movement signal and of the pressure signal in order to recognize the gesture.