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公开(公告)号：US11719718B2
公开(公告)日：2023-08-08
申请号：US17375297
申请日：2021-07-14
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Paolo Rivolta , Federico Rizzardini
Abstract: An embodiment system includes: a first motion sensor configured to generate first sensor data indicative of a first type of movement of an electronic device; a first feature detection circuit configured to determine at least one orientation-independent feature based on the first sensor data; and a classifying circuit configured to determine whether or not the electronic device is located on a stationary surface based on the at least one orientation-independent feature.
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公开(公告)号：US11550427B2
公开(公告)日：2023-01-10
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：US11037436B2
公开(公告)日：2021-06-15
申请号：US16296016
申请日：2019-03-07
Applicant: STMicroelectronics S.r.l.
Inventor： Stefano Paolo Rivolta , Federico Rizzardini , Daniele Arceri , Alessandra Maria Rizzo Piazza Roncoroni , Marco Bianco
Abstract: A remote access device and methods of operation thereof are provided for accessing a physical object or location. The remote access device includes an accelerometer, a wireless transmitter, and control circuitry. The control circuitry causes the wireless transmitter to transition between a first operating mode and a second operating mode in response to receiving signals from the accelerometer indicating a first change in motion states of the remote access device. The control circuitry causes the wireless transmitter to transition between a first operating mode and a second operating mode in response to receiving signals from the accelerometer indicating a second change in motion states of the remote access device. The control circuitry further causes the wireless transmitter to transition between the first operating mode and the second operating mode in response to receiving signals from the accelerometer indicating a third change in motion states of the remote access device.
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公开(公告)号：US20210034167A1
公开(公告)日：2021-02-04
申请号：US16922752
申请日：2020-07-07
Applicant: STMicroelectronics S.r.l.
Inventor： Federico Rizzardini , Lorenzo Bracco , Stefano Paolo Rivolta
IPC: G06F3/038
Abstract: A gesture-recognition system for a digital-pen-like device, envisages: at least one motion sensor to provide at least one motion signal indicative of movements of the digital-pen-like device; a gesture-recognition signal processor, coupled to the at least one motion sensor to process the motion signal and to implement a plurality of gesture recognition algorithms based on the motion signal, each of the gesture recognition algorithms being configured to recognize a corresponding gesture performed by a user of the digital-pen-like device; and a controller coupled to the gesture-recognition signal processor and transmitting gesture-recognition data indicative of a recognized gesture towards a host apparatus, with which the digital-pen-like device is associated.
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公开(公告)号：US20210033402A1
公开(公告)日：2021-02-04
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: 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.
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Patent Agency Ranking
6.发明申请DEVICE AND METHOD FOR DETERMINATION OF ANGULAR POSITION IN THREE-DIMENSIONAL SPACE, AND CORRESPONDING ELECTRONIC APPARATUS 审中-公开用于确定三维空间中的角位置的装置和方法以及相应的电子装置公开(公告)号：US20170003751A1
公开(公告)日：2017-01-05
申请号：US14974630
申请日：2015-12-18
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 ({circumflex over (q)}) of angular position as a function of an accelerometric signal (acc) supplied by an accelerometric sensor and as a function of at least one between a gyroscopic signal (gyro) supplied by a gyroscopic sensor and a magnetic signal (mag) supplied by 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 (acc) and an input signal (mag′) indicative of the magnetic signal (mag) and generates a geomagnetic quaternion (qAccMag). The second processing block receives a signal indicative of the gyroscopic signal (gyro) and generates a gyroscopic quaternion (qGyro). The combination block determines the estimate ({circumflex over (q)}) of angular position by complementarily combining the geomagnetic quaternion (qAccMag) and the gyroscopic quaternion (qGyro) based on a combination factor (K) that has a dynamic value and an adaptive value and that varies as a function of the operating conditions.
Abstract translation: 电子设备确定作为由加速度传感器提供的加速度信号（acc）的函数的角位置的估计（{回旋（q）}），并且作为由陀螺仪信号（gyro）提供的陀螺仪信号 陀螺传感器和由磁场传感器提供的磁信号（mag）。 处理模块实现了具有第一处理块，第二处理块和组合块的互补滤波器。 第一处理块接收加速度信号（acc）和指示磁信号（mag）的输入信号（mag'），并产生地磁四元数（qAccMag）。 第二处理块接收指示陀螺仪信号（gyro）的信号，并产生陀螺四分数（qGyro）。 基于具有动态值和自适应的组合因子（K），组合块通过将地磁四元数（qAccMag）和陀螺四分数（qGyro）互补地组合来确定角位置的估计（{circumflex over（q）}） 值，并且根据操作条件而变化。
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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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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.
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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.
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