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公开(公告)号：US12143764B2
公开(公告)日：2024-11-12
申请号：US17686322
申请日：2022-03-03
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico Rizzardini , Lorenzo Bracco , Andrea Labombarda , Mauro Bardone , Stefano Paolo Rivolta , Federico Iaccarino
Abstract: The present disclosure is directed to input detection for electronic devices using electrostatic charge sensors. The devices and methods disclosed herein utilize electrostatic charge sensors to detect various touch gestures, such as long and short touches, single/double/triple taps, and swipes; and perform in-ear detection.
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公开(公告)号：US11968602B2
公开(公告)日：2024-04-23
申请号：US17356180
申请日：2021-06-23
Applicant: STMICROELECTRONICS, INC. , STMICROELECTRONICS S.r.l.
Inventor： Karimuddin Sayed , Chandandeep Singh Pabla , Lorenzo Bracco , Federico Rizzardini
CPC classification number: H04W4/38 , G01D5/24404 , G01D9/005 , H04W4/70
Abstract: In an embodiment, a device comprises a memory, which, in operation, stores data samples associated with a plurality of data sensors, and circuitry, coupled to the memory, wherein the circuitry, in operation, generates synchronized output data sets associated with the plurality of data sensors. Generating a synchronized output data set includes: determining a reference sample associated with a sensor of the plurality of sensors; verifying a timing validity of a data sample associated with another sensor of the plurality of sensors; identifying a closest-in-time data sample associated with the another sensor of the plurality of sensors with respect to the reference sample; and generating the synchronized output data set based on interpolation.
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公开(公告)号：US11656071B2
公开(公告)日：2023-05-23
申请号：US17237844
申请日：2021-04-22
Applicant: STMicroelectronics S.r.l.
Inventor： Federico Rizzardini , Stefano Paolo Rivolta , Lorenzo Bracco , Marco Bianco
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.
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公开(公告)号：US11516409B2
公开(公告)日：2022-11-29
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
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.
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公开(公告)号：US11474621B2
公开(公告)日：2022-10-18
申请号：US16932467
申请日：2020-07-17
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Paolo Rivolta , Federico Rizzardini , Lorenzo Bracco
IPC: G06F3/0346 , G06F3/01 , G06F3/038 , G06F3/0354
Abstract: An embodiment pointing method to generate screen-frame displacement data based on 3D-space movements of a pointing electronic device, comprises receiving a gravity vector (g), having components (gx, gy, gz) corresponding to respective projections of gravity acceleration ({right arrow over (g)}) on three axes (X, Y, Z) of a 3D reference system associated with the pointing electronic device, generated by a sensor-fusion algorithm from joint processing of an acceleration signal, indicative of acceleration acting on the pointing electronic device along the three axes, and of a gyroscope signal (Gyro), indicative of angular rate of rotation of the pointing electronic device around the three axes. The method further comprises implementing a roll-compensation of the gyroscope signal (Gyro) as a function of the gravity vector (g) to determine a roll-compensated gyroscope signal (Gyro′); and generating the screen-frame displacement data based on the roll-compensated gyroscope signal (Gyro′).
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Patent Agency Ranking
公开(公告)号：US11407098B2
公开(公告)日：2022-08-09
申请号：US16696772
申请日：2019-11-26
Applicant: STMICROELECTRONICS S.R.L. , STMICROELECTRONICS, INC.
Inventor： Marco Bianco , Lorenzo Bracco , Mahesh Chowdhary , Roberto Mura , Stefano Paolo Rivolta , Federico Rizzardini
Abstract: A device for generating a control signal based on the linear movement of a linear member is provided. The device includes a linear member, a rotatable member, a first inertial measurement unit (IMU) coupled to the rotatable member and a second IMU having a fixed position. The device also includes a processing circuit which uses sensing signals from the IMUS to determine an attitude of the first IMU referenced to the second IMU and generate a control signal based on the attitude.
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17.发明授权公开(公告)号：US12287922B2
公开(公告)日：2025-04-29
申请号：US18512944
申请日：2023-11-17
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico Rizzardini , Lorenzo Bracco
IPC: G06F3/01
Abstract: A recognition system for recognition of a gesture of bringing an electronic device, of a mobile or wearable type, to a user's ear, designed to be integrated in the electronic device and having: a movement sensor, configured to provide a movement signal indicative of the movement of the electronic device; an electrostatic charge variation sensor, configured to provide a charge variation signal associated with the movement; a processing module, operatively coupled to the movement sensor and to the electrostatic charge variation sensor and configured to perform a joint processing of the movement signal and the charge variation signal for the recognition of the gesture.
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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.
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19.发明授权公开(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
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.
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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
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.
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