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公开(公告)号：US11942107B2
公开(公告)日：2024-03-26
申请号：US17183288
申请日：2021-02-23
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Stefano Paolo Rivolta , Federico Rizzardini , Lorenzo Bracco , Roberto Mura
IPC: G10L25/78 , G06N5/01 , G06N20/10 , G10L25/09 , G10L25/30 , G10L25/51 , H04R25/00 , G10L15/16 , G10L19/26
CPC classification number: G10L25/78 , G06N5/01 , G06N20/10 , G10L25/09 , G10L25/30 , G10L25/51 , H04R25/40 , H04R25/505 , H04R25/604 , G10L15/16 , G10L19/26
Abstract: The present disclosure is directed to a device and method for detecting presence or absence of human speech. The device and method utilize a low-power accelerometer. The device and method generate an acceleration signal using the accelerometer, filter the acceleration signal with a band pass filter or a high pass filter, determine at least one calculation of the filtered acceleration signal, detect a presence or absence of a voice based on the at least one calculation, and output a detection signal that indicates the presence or absence of the voice. The device and method are well suited for portable audio devices, such as true wireless stereo headphones, that have a limited power supply.
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12.发明授权公开(公告)号：US11816290B2
公开(公告)日：2023-11-14
申请号：US18055758
申请日：2022-11-15
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico Rizzardini , Lorenzo Bracco
CPC classification number: G06F3/0418 , G06F3/017 , G06F3/043 , G06F3/04166 , G06F3/044
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：US11721202B2
公开(公告)日：2023-08-08
申请号：US17332669
申请日：2021-05-27
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Stefano Paolo Rivolta , Federico Rizzardini , Daniele Arceri , Alessandra Maria Rizzo Piazza Roncoroni , Marco Bianco
CPC classification number: G08C17/00 , B60R25/24 , B60R25/406 , G07C9/00309 , G07C2009/00325 , G08C2201/32
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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14.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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Patent Agency Ranking
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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17.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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19.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：US12146894B2
公开(公告)日：2024-11-19
申请号：US17827395
申请日：2022-05-27
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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