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    Computing system implementing an algorithm for fusing data from inertial sensors, and method
    44.
    发明授权
    Computing system implementing an algorithm for fusing data from inertial sensors, and method 有权

    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

    IPC: G01B7/30 ,  G01P15/14 ,  G01P15/18 ,  G06F1/16

    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.

    Gesture recognition system and method for a digital-pen-like device and corresponding digital-pen-like device
    45.
    发明授权
    Gesture recognition system and method for a digital-pen-like device and corresponding digital-pen-like device 有权

    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.

    Computing system implementing an algorithm for fusing data from inertial sensors, and method
    46.
    发明授权
    Computing system implementing an algorithm for fusing data from inertial sensors, and method 有权

    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

    IPC: G01B7/30 ,  G01P15/14 ,  G01P15/18 ,  G06F1/16

    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.

    LOW-POWER TILT-COMPENSATED POINTING METHOD AND CORRESPONDING POINTING ELECTRONIC DEVICE
    47.
    发明申请
    LOW-POWER TILT-COMPENSATED POINTING METHOD AND CORRESPONDING POINTING ELECTRONIC DEVICE 有权

    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′).

    System, method and article for counting steps using an accelerometer
    49.
    发明授权
    System, method and article for counting steps using an accelerometer 有权

    公开(公告)号：US10359296B2

    公开(公告)日：2019-07-23

    申请号：US15287437

    申请日：2016-10-06

    Applicant: STMicroelectronics S.r.l.

    Inventor： Stefano Paolo Rivolta ,  Andrea Labombarda ,  Alberto Zancanato

    IPC: G01P21/00 ,  G01C22/00

    Abstract: An activity tracking device, such as a step-counting device includes an interface configured to receive one or more acceleration signals and signal processing circuitry. The signal processing circuitry generates an indication of condition of an accelerometer, such as a body position of the accelerometer, based on one or more accelerometer signals, generates an event signal, such as an event flag, based on one or more accelerometer signals and the indication of the condition of the accelerometer, and generates an activity signal, such as step flag based on the event signal, the indication of the condition of the accelerometer and one or more acceleration signals. The signal processing circuitry may generate a noise signal based on one or more acceleration signals and generate the activity signal based on the noise signal.

    SYSTEM, METHOD AND ARTICLE FOR COUNTING STEPS USING AN ACCELEROMETER
    50.
    发明申请
    SYSTEM, METHOD AND ARTICLE FOR COUNTING STEPS USING AN ACCELEROMETER 审中-公开

    公开(公告)号：US20170102247A1

    公开(公告)日：2017-04-13

    申请号：US15287437

    申请日：2016-10-06

    Applicant: STMicroelectronics S.r.l.

    Inventor： Stefano Paolo Rivolta ,  Andrea Labombarda ,  Alberto Zancanato

    IPC: G01C22/00

    CPC classification number: G01C22/006

    Abstract: An activity tracking device, such as a step-counting device includes an interface configured to receive one or more acceleration signals and signal processing circuitry. The signal processing circuitry generates an indication of condition of an accelerometer, such as a body position of the accelerometer, based on one or more accelerometer signals, generates an event signal, such as an event flag, based on one or more accelerometer signals and the indication of the condition of the accelerometer, and generates an activity signal, such as step flag based on the event signal, the indication of the condition of the accelerometer and one or more acceleration signals. The signal processing circuitry may generate a noise signal based on one or more acceleration signals and generate the activity signal based on the noise signal.

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