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公开(公告)号：US20200049504A1
公开(公告)日：2020-02-13
申请号：US16059701
申请日：2018-08-09
Applicant: STMicroelectronics S.r.l.
Inventor： Federico RIZZARDINI
IPC: G01C19/02 , G01C19/5776 , G06F17/18 , G06F17/16 , G01K15/00
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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22.发明申请公开(公告)号：US20180340768A1
公开(公告)日：2018-11-29
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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23.发明公开公开(公告)号：US20240192783A1
公开(公告)日：2024-06-13
申请号：US18512944
申请日：2023-11-17
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO
IPC: G06F3/01
CPC classification number: G06F3/017
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：US20240044647A1
公开(公告)日：2024-02-08
申请号：US18484978
申请日：2023-10-11
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Stefano Paolo RIVOLTA , Federico RIZZARDINI , Lorenzo BRACCO , Roberto MURA
IPC: G01C19/60 , G01B7/00 , H03K17/945
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：US20230384343A1
公开(公告)日：2023-11-30
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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Patent Agency Ranking
公开(公告)号：US20230125175A1
公开(公告)日：2023-04-27
申请号：US18047187
申请日：2022-10-17
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Stefano Paolo RIVOLTA , Roberto MURA , Lorenzo BRACCO , Federico RIZZARDINI
IPC: G06F1/16
Abstract: The present disclosure is directed to a detection method of a first or second state of a foldable electronic device including a first and a second hardware element tiltable to each other and accommodating a first and a second electrode which are in contact with each other when the foldable electronic device is in the first state and at a distance from each other otherwise. The detection method includes: acquiring a first and a second charge variation signal indicative of environmental electric/electrostatic charge variations detected by the first and second electrodes; generating a differential signal indicative of a difference between the first and the second charge variation signals; generating, as a function of the differential signal, one or more feature signals; and generating, as a function of the one or more feature signals, a contact signal indicative of the first or second states of the foldable electronic device.
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公开(公告)号：US20220342486A1
公开(公告)日：2022-10-27
申请号：US17862937
申请日：2022-07-12
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO , Stefano Paolo RIVOLTA
Abstract: An electronic device has an input which, in operation, receives an input stream of accelerometer data samples indicative of acceleration values along at least one axis. The devices includes circuitry, coupled to the input. The circuitry, in operation, executes an automatic-learning algorithm on blocks of samples of the input stream of accelerometer data samples to identify, for each block, a corresponding condition-of-user-movement from among a plurality of determined conditions-of-user-movement. The circuitry generates a plurality of streams of samples based on the input stream of accelerometer data samples, and for each condition of movement identified, selects a corresponding stream of samples of the plurality of streams of samples. The circuitry executes a wrist-tilt gesture detection algorithm using samples of the selected stream of the plurality of streams of samples.
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公开(公告)号：US20220270593A1
公开(公告)日：2022-08-25
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
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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公开(公告)号：US20210287526A1
公开(公告)日：2021-09-16
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
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：US20210255686A1
公开(公告)日：2021-08-19
申请号：US17168110
申请日：2021-02-04
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Stefano Paolo RIVOLTA , Marco BIANCO , Roberto MURA , Federico RIZZARDINI , Lorenzo BRACCO
IPC: G06F1/3206 , G06F1/3296 , G06F1/16 , G06N20/00
Abstract: An electronic device has sensing circuitry and control circuitry. The control circuitry generates, based on generated sensor data, information indicative of movement of the electronic device. The control circuitry generates control signals to control operation of the electronic device in a plurality of power states, including a working-power state, an intermediate-power state and a low-power state, based on the information indicative of movement.
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