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公开(公告)号：US20230025202A1
公开(公告)日：2023-01-26
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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2.发明公开公开(公告)号：US20230251078A1
公开(公告)日：2023-08-10
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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3.发明申请公开(公告)号：US20190018499A1
公开(公告)日：2019-01-17
申请号：US16125515
申请日：2018-09-07
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Antonio MICALI , Alberto ZANCANATO , Federico RIZZARDINI
CPC classification number: G06F3/017 , G01B7/30 , G01C17/38 , G01C19/00 , G01C21/10 , G01C21/165 , G01P15/00 , G01V3/081
Abstract: An electronic device determines an estimate of angular position based on an accelerometric signal supplied by an accelerometric sensor and as a function of at least one of a gyroscopic signal from a gyroscopic sensor and a magnetic signal from a magnetic-field sensor. A processing module implements a complementary filter, which is provided with a first processing block, a second processing block, and a combination block. The first processing block receives the acceleration signal and an input signal indicative of the magnetic signal and generates a geomagnetic quaternion. The second processing block receives a signal indicative of the gyroscopic signal (gyro) and generates a gyroscopic quaternion. The combination block determines the estimate ({circumflex over (q)}) of angular position by complementarily combining the geomagnetic quaternion and the gyroscopic quaternion based on a combination factor that has a dynamic value and an adaptive value and that varies as a function of the operating conditions.
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公开(公告)号：US20250036213A1
公开(公告)日：2025-01-30
申请号：US18916262
申请日：2024-10-15
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO
IPC: G06F3/0346
Abstract: A device includes a memory and processing circuitry coupled to the memory. The processing circuitry, in operation: estimates an angular rate of change and determines a rotational versor based on the rotational data; and estimates a gravity vector based on the angular rate of change and the rotational versor. The processing circuitry generates a dynamic gravity vector based on the estimated gravity vector, a correction factor and an estimated error in estimated gravity vector. The processing circuitry estimates a linear acceleration and determines an acceleration versor based on the acceleration data, and determines the correction factor based on the linear acceleration. The processing circuitry estimates the error in the estimated gravity vector based on the acceleration versor.
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公开(公告)号：US20250035669A1
公开(公告)日：2025-01-30
申请号：US18912496
申请日：2024-10-10
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO
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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Patent Agency Ranking
公开(公告)号：US20240176427A1
公开(公告)日：2024-05-30
申请号：US18059214
申请日：2022-11-28
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO
IPC: G06F3/0346
CPC classification number: G06F3/0346
Abstract: A device includes a memory and processing circuitry coupled to the memory. The processing circuitry, in operation: estimates an angular rate of change and determines a rotational versor based on the rotational data; and estimates a gravity vector based on the angular rate of change and the rotational versor. The processing circuitry generates a dynamic gravity vector based on the estimated gravity vector, a correction factor and an estimated error in estimated gravity vector. The processing circuitry estimates a linear acceleration and determines an acceleration versor based on the acceleration data, and determines the correction factor based on the linear acceleration. The processing circuitry estimates the error in the estimated gravity vector based on the acceleration versor.
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公开(公告)号：US20230283939A1
公开(公告)日：2023-09-07
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
CPC classification number: H04R1/1041 , H04R1/1016 , G06F3/044 , H03K17/962 , H03K2017/9613
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：US20230070405A1
公开(公告)日：2023-03-09
申请号：US18055758
申请日：2022-11-15
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO
Abstract: System for detecting a touch gesture of a user on a detection surface, comprising: a processing unit; and an accelerometer to detect a vibration at the detection surface and generate a vibration signal. The processing unit is configured to: acquire the vibration signal, detect, in the vibration signal, a signal characteristic which can be correlated to the touch gesture of the user, detect, in the vibration signal, a stationarity condition preceding and/or following the detected signal characteristic, and validate the touch gesture in the event that both the signal characteristic and the stationarity condition have been detected. An electrostatic charge sensor may also be used as a further parameter to validate the touch gesture.
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公开(公告)号：US20220326806A1
公开(公告)日：2022-10-13
申请号：US17711853
申请日：2022-04-01
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO
Abstract: System for detecting a touch gesture of a user on a detection surface, comprising: a processing unit; and an accelerometer to detect a vibration at the detection surface and generate a vibration signal. The processing unit is configured to: acquire the vibration signal, detect, in the vibration signal, a signal characteristic which can be correlated to the touch gesture of the user, detect, in the vibration signal, a stationarity condition preceding and/or following the detected signal characteristic, and validate the touch gesture in the event that both the signal characteristic and the stationarity condition have been detected. An electrostatic charge sensor may also be used as a further parameter to validate the touch gesture.
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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.
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