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11.发明授权公开(公告)号：US11473894B2
公开(公告)日：2022-10-18
申请号：US17207180
申请日：2021-03-19
Applicant: STMicroelectronics S.r.l.
Inventor： Alberto Zancanato , Michele Ferraina , Federico Rizzardini , Stefano Paolo Rivolta
Abstract: A computing system includes a first hardware element having a first accelerometer and a first gyroscope, and a second hardware element having a second accelerometer and a second gyroscope. The first and second hardware elements are moveable with respect to each other. The computing system recursively generates a result signal indicative of a relative orientation of the first and second hardware elements with respect to each other. The result signal may be generated by generating a first intermediate signal indicative of a angle between the first and second hardware elements based on signals generated by the first and second accelerometers and generating a second intermediate signal indicative of the angle based on signals generated by the first and second gyroscopes. The result signal indicative of the angle may be generated as a weighted sum of the first intermediate signal and the second intermediate signal. At least one of the first and second hardware elements is controlled by on the result signal.
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公开(公告)号：US11360585B2
公开(公告)日：2022-06-14
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 , G06F3/01 , G06F3/0346
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：US11150090B2
公开(公告)日：2021-10-19
申请号：US16059701
申请日：2018-08-09
Applicant: STMicroelectronics S.r.l.
Inventor： Federico Rizzardini
IPC: G01C19/02 , G01C19/5776 , G06F17/16 , G01K15/00 , G06F17/18
Abstract: One or more embodiments are directed to zero-rate level compensation systems. One such system includes stationary detection circuitry that receives gyroscope signals output by a gyroscope and determines whether the gyroscope is stationary based on the gyroscope signals. The stationary detection circuitry generates a stationary gyroscope signal indicating the gyroscope is stationary based on a determination that the gyroscope is stationary. A temperature sensor senses temperature and outputs temperature signals. Zero-rate level estimation circuitry receives the stationary gyroscope signal and a temperature signal associated with the stationary gyroscope signal, and iteratively estimates one or more zero-rate level compensation parameters based on the stationary gyroscope signal and the temperature signal.
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14.发明授权公开(公告)号：US10976150B2
公开(公告)日：2021-04-13
申请号：US15987637
申请日：2018-05-23
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Alberto Zancanato , Michele Ferraina , Federico Rizzardini , Stefano Paolo Rivolta
Abstract: A computing system includes a first hardware element having a first accelerometer and a first gyroscope, and a second hardware element having a second accelerometer and a second gyroscope. The first and second hardware elements are moveable with respect to each other. The computing system recursively generates a result signal indicative of a relative orientation of the first and second hardware elements with respect to each other. The result signal may be generated by generating a first intermediate signal indicative of a angle between the first and second hardware elements based on signals generated by the first and second accelerometers and generating a second intermediate signal indicative of the angle based on signals generated by the first and second gyroscopes. The result signal indicative of the angle may be generated as a weighted sum of the first intermediate signal and the second intermediate signal. At least one of the first and second hardware elements is controlled by on the result signal.
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公开(公告)号：US20210034171A1
公开(公告)日：2021-02-04
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 , G06F3/038 , G06F3/01
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
16.发明申请公开(公告)号：US20200081546A1
公开(公告)日：2020-03-12
申请号：US16566759
申请日：2019-09-10
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Stefano Paolo Rivolta , Federico Rizzardini
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.
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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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18.发明申请公开(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.
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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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