公开(公告)号：EP3647905A1

公开(公告)日：2020-05-06

申请号：EP19206346.9

申请日：2019-10-30

Applicant: STMicroelectronics S.r.l.

Inventor： RIVOLTA, Stefano Paolo ,  RIZZARDINI, Federico

IPC: G06F1/3231

Abstract: A system (100) for determining whether an electronic device (101) is located on a stationary or stable surface includes: a first motion sensor (102) configured to generate first sensor data indicative of a first type of movement of the electronic device; a first feature detection circuit (104) configured to determine at least one orientation-independent feature based on the first sensor data; and a classifying circuit (106) configured to determine whether or not the electronic device is located on a stationary surface based on the at least one orientation-independent feature.

公开(公告)号：EP4050603A1

公开(公告)日：2022-08-31

申请号：EP22155997.4

申请日：2022-02-09

Applicant: STMicroelectronics S.r.l.

Inventor： RIVOLTA, Stefano Paolo ,  RIZZARDINI, Federico ,  BRACCO, Lorenzo ,  MURA, Roberto

IPC: G10L25/78

Abstract: The device (10) and the method are directed to detect presence or absence of human speech. The device and method utilize a low-power accelerometer (14). 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.

公开(公告)号：EP3907465A1

公开(公告)日：2021-11-10

申请号：EP21171687.3

申请日：2021-04-30

Applicant: STMicroelectronics S.r.l.

Inventor： RIZZARDINI, Federico ,  RIVOLTA, Stefano Paolo ,  BRACCO, Lorenzo ,  BIANCO, Marco

IPC: G01B7/30 ,  G01D5/14

Abstract: A method for controlling an electronic apparatus (10) on the basis of a value of a lid angle (α LID ) between a first hardware element (12) accommodating a first magnetometer (20) and a second hardware element (14) accommodating a second magnetometer (22), comprising: acquiring, through the magnetometers, first signals (B 1 , B 2 ) representing an orientation of the hardware elements; generating, on the basis of the first signals, a calibration parameter (J 1 ) indicative of a condition of calibration of the magnetometers; generating, on the basis of the first signals, a reliability value (K 1 ) indicative of a condition of reliability of the first signals; calculating (50) a first intermediate value (α LID_MAG ) of the lid angle (α LID ) on the basis of the first signals; calculating (53) a current value of the lid angle (α LID ) on the basis of the calibration parameter (J 1 ), of the reliability value (K 1 ) , and of the first intermediate value (α LID_MAG ) ; and controlling the electronic apparatus on the basis of the current value.

公开(公告)号：EP3771970A1

公开(公告)日：2021-02-03

申请号：EP20188663.7

申请日：2020-07-30

Applicant: STMicroelectronics S.r.l.

Inventor： ROSINGANA, Paolo ,  RIZZO PIAZZA RONCORONI, Alessandra Maria ,  RIZZARDINI, Federico ,  BRACCO, Lorenzo ,  RIVOLTA, Stefano Paolo ,  BIANCO, Marco

IPC: G06F3/0354 ,  G06F3/0346 ,  B81B7/02 ,  G05B13/02 ,  G06F1/32

Abstract: An inertial measurement system (1), having: at least one motion sensor (2) to output motion data with an output data rate - ODR -period (T ODR ); and a control unit (4) coupled to the motion sensor (2) to control operation thereof based on a power mode switching, according to which each ODR period (T ODR ) envisages: a first phase (T OFF ), in which the motion sensor (2) is controlled in a condition of low power consumption; and a subsequent measurement phase (T MEAS ), in which the motion sensor (2) is controlled to perform measurements for generation of measurement data. The control unit (4) adaptively adjusts the duration of the ODR period (T ODR ) based on at least one check related to the measurement data generated during the measurement phase.

公开(公告)号：EP3771969A1

公开(公告)日：2021-02-03

申请号：EP20188666.0

申请日：2020-07-30

Applicant: STMicroelectronics S.r.l.

Inventor： RIZZARDINI, Federico ,  BRACCO, Lorenzo ,  RIVOLTA, Stefano Paolo

IPC: G06F3/0346 ,  G06F3/01 ,  G06F1/3231

Abstract: A gesture-recognition system for a digital-pen-like device (1), envisages: at least one motion sensor (2) to provide at least one motion signal (Sm) indicative of movements of the digital-pen-like device (1); a gesture-recognition module (6), coupled to the at least one motion sensor (2) to process the motion signal (Sm) and to implement a plurality of gesture recognition algorithms based on the motion signal (Sm), each of the gesture recognition algorithms being configured to recognize a corresponding gesture performed by a user of the digital-pen-like device (1); and a control unit (8) coupled to the gesture-recognition module (6) and transmitting gesture-recognition data indicative of a recognized gesture towards a host apparatus (10), with which the digital-pen-like device (1) is associated.

公开(公告)号：EP3660674A1

公开(公告)日：2020-06-03

申请号：EP19212329.7

申请日：2019-11-28

Applicant: STMicroelectronics S.r.l.

Inventor： ZANCANATO, Alberto ,  RIVOLTA, Stefano Paolo

IPC: G06F9/448 ,  G06N20/00

Abstract: Technological advancements are disclosed that utilize inertial sensor data associated with a device to determine a new feature array and if the new feature array is within an existing class within a state space associated with the inertial sensor data. In response to the new feature array being included in the existing class, the new feature array is added to the existing class and a representation of the existing class in the state space is updated based on the new feature array and an existing representation of the existing class. In response to the new feature array not being included in the existing class, a new class is created based on the new feature array.

公开(公告)号：EP3407157A1

公开(公告)日：2018-11-28

申请号：EP18172853.6

申请日：2018-05-17

Applicant: STMicroelectronics S.r.l.

Inventor： ZANCANATO, Alberto ,  FERRAINA, Michele ,  RIZZARDINI, Federico ,  RIVOLTA, Stefano Paolo

IPC: G06F1/16

CPC classification number: G01B7/30 ,  G01P15/14 ,  G01P15/18 ,  G06F1/1616 ,  G06F1/1677 ,  G06F1/1694

Abstract: A computing system (10) including: a first hardware element (12, 14), housing a first accelerometer (20; 22) and a first gyroscope (24; 26); a second hardware element (14; 12), housing a second accelerometer (22; 20) and a second gyroscope (26; 24), which can be oriented with respect to the first hardware element (12) and defines an angle (α LID ) with the first hardware element (12; 14); and a calculating unit (27, 28) configured for performing the operations of: calculating a first intermediate value (α LID_ACC ) of the angle (α LID ) on the basis of signals generated by the first and by the second accelerometers (20, 22); calculating a second intermediate value (α LID_GYR ) of the angle (α LID ) on the basis of signals generated by the first and by the second gyroscopes (24, 26); calculating a final value of the angle (α LID ) as the weighted sum of the first intermediate value (α LID_ACC ) and of the second intermediate value (α LID_GYR ) ; and controlling at least one parameter of the computing system (10) as a function of the final value of the angle (α LID ).