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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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公开(公告)号：US20240085960A1
公开(公告)日：2024-03-14
申请号：US18516453
申请日：2023-11-21
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO
IPC: G06F1/16 , G01B7/31 , G06F1/3231 , G06F1/3246
CPC classification number: G06F1/1677 , G01B7/31 , G06F1/1616 , G06F1/3231 , G06F1/3246 , G01C1/00
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：US20230384837A1
公开(公告)日：2023-11-30
申请号：US18183464
申请日：2023-03-14
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Federico RIZZARDINI , Lorenzo BRACCO
IPC: G06F1/16 , H04M1/02 , G06F1/3246 , G01C1/00
CPC classification number: G06F1/1677 , H04M1/0245 , G06F1/3246 , G01C1/00 , G01C9/08
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：US20210409914A1
公开(公告)日：2021-12-30
申请号：US17356180
申请日：2021-06-23
Applicant: STMICROELECTRONICS, INC. , STMICROELECTRONICS S.r.l.
Inventor： Karimuddin SAYED , Chandandeep Singh PABLA , Lorenzo BRACCO , Federico RIZZARDINI
Abstract: In an embodiment, a device comprises a memory, which, in operation, stores data samples associated with a plurality of data sensors, and circuitry, coupled to the memory, wherein the circuitry, in operation, generates synchronized output data sets associated with the plurality of data sensors. Generating a synchronized output data set includes: determining a reference sample associated with a sensor of the plurality of sensors; verifying a timing validity of a data sample associated with another sensor of the plurality of sensors; identifying a closest-in-time data sample associated with the another sensor of the plurality of sensors with respect to the reference sample; and generating the synchronized output data set based on interpolation.
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公开(公告)号：US20210348911A1
公开(公告)日：2021-11-11
申请号：US17237844
申请日：2021-04-22
Applicant: STMicroelectronics S.r.l.
Inventor： Federico RIZZARDINI , Stefano Paolo RIVOLTA , Lorenzo BRACCO , Marco BIANCO
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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Patent Agency Ranking
16.发明申请公开(公告)号：US20210207940A1
公开(公告)日：2021-07-08
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：US20210158190A1
公开(公告)日：2021-05-27
申请号：US17099582
申请日：2020-11-16
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Stefano Paolo RIVOLTA , Lorenzo BRACCO , Roberto MURA , Federico RIZZARDINI
Abstract: A microelectromechanical weather pattern recognition system includes: at least one movement sensor, of a MEMS type, which generates a movement signal, in the presence and as a function of at least one weather pattern to be recognized; and a recognition circuitry, which is coupled to the movement sensor and which receives the movement signal; extracts given features of the movement signal; and perform processing operations, based on the given features of the movement signal, in order to recognize the weather pattern by executing at least one, appropriately trained, machine-learning algorithm.
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公开(公告)号：US20210154820A1
公开(公告)日：2021-05-27
申请号：US16696772
申请日：2019-11-26
Applicant: STMICROELECTRONICS S.R.L. , STMICROELECTRONICS, INC.
Inventor： Marco BIANCO , Lorenzo BRACCO , Mahesh CHOWDHARY , Roberto MURA , Stefano Paolo RIVOLTA , Federico RIZZARDINI
Abstract: A device for generating a control signal based on the linear movement of a linear member is provided. The device includes a linear member, a rotatable member, a first inertial measurement unit (IMU) coupled to the rotatable member and a second IMU having a fixed position. The device also includes a processing circuit which uses sensing signals from the IMUS to determine an attitude of the first IMU referenced to the second IMU and generate a control signal based on the attitude.
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公开(公告)号：US20210117010A1
公开(公告)日：2021-04-22
申请号：US17067519
申请日：2020-10-09
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：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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