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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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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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15.发明申请公开(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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Patent Agency Ranking
16.发明申请公开(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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公开(公告)号：US20220174203A1
公开(公告)日：2022-06-02
申请号：US17527989
申请日：2021-11-16
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO , Roberto MURA , Stefano Paolo RIVOLTA
Abstract: A device includes a charge variation sensor having at one or more electrodes. The charge variation sensor, in operation, generates a charge variation signal indicative of changes in an electric or electrostatic charge induced on the one or more electrodes by an alternating current power source. Processing circuitry, coupled to the charge variation sensor, generates a frequency spectrum signal based on the charge variation signal and identifies a frequency of operation associated with the alternating current power source based on the generated frequency spectrum signal. A control signal is generated based on the identified frequency of operation. An image acquisition device sets an image acquisition frequency based on the control signal.
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19.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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