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：EP3734224A3

公开(公告)日：2021-01-06

申请号：EP20171149.6

申请日：2020-04-23

Applicant: STMicroelectronics Inc. ,  STMicroelectronics S.r.l.

Inventor： JAIN, Mahaveer ,  CHOWDHARY, Mahesh ,  MURA, Roberto ,  PALELLA, Nicola Matteo ,  COLOMBO, Leonardo

IPC: G01C21/16 ,  G01C25/00

Abstract: A device (120) including microelectromechanical systems (MEMS) sensors are used in dead reckoning in conditions where Global Positioning System (GPS) signals or Global Navigation Satellite System (GNSS) signals are lost. The device (120) is capable of tracking the location of the device after the GPS/GNSS signals are lost by using MEMS sensors such as accelerometers and gyroscopes. By calculating a misalignment angle between a forward axis of a sensor frame of the device and a forward axis of a vehicle (110) frame using the data received from the MEMS sensors, the device can accurately calculate the location of a user or the vehicle of the device even without the GPS/GNSS signals. Accordingly, a device capable of tracking the location of the user riding in the vehicle in GPS/GNSS signals absent environment can be provided.

公开(公告)号：EP4321969A1

公开(公告)日：2024-02-14

申请号：EP23186008.1

申请日：2023-07-18

Applicant: STMicroelectronics S.r.l.

Inventor： RIVOLTA, Stefano Paolo ,  MURA, Roberto

IPC: G06F1/3231 ,  G06F1/16

Abstract: The present disclosure is directed to pick-up state detection for an electronic device, such as a laptop. In a pick-up state, the device is picked or lifted up from a surface, such as a table. A power state of the device is adjusted in response to detecting the pick-up state. For example, the device is in a hibernate state while set on the table, and is switched to a working state in response to detecting the pick-up state.

公开(公告)号：EP4170461A1

公开(公告)日：2023-04-26

申请号：EP22201942.4

申请日：2022-10-17

Applicant: STMicroelectronics S.r.l.

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

IPC: G06F1/16

Abstract: Detection method (50) of a first or second state of a foldable electronic device (10) comprising a first and a second hardware element (12; 14) tiltable to each other and accommodating a first and a second electrode (20b; 22b) 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 (50) is performed by a control unit (23) of the foldable electronic device and comprises the steps of: acquiring (S10) a first and a second charge variation signal indicative of environmental electric/electrostatic charge variations detected by the first and second electrodes; generating (S12) a differential signal (S D ) indicative of a difference between the first (S Q1 ) and the second (S Q2 ) charge variation signals; generating (S14, S16, S18, S20), as a function of the differential signal (S D ), one or more feature signals (S T ); and generating (S22), as a function of the one or more feature signals (S T ), a contact signal (Sc) indicative of the first or second states of the foldable electronic device (10) .

公开(公告)号：EP4170461A9

公开(公告)日：2023-06-14

申请号：EP22201942.4

申请日：2022-10-17

Applicant: STMicroelectronics S.r.l.

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

IPC: G06F1/16

Abstract: Detection method (50) of a first or second state of a foldable electronic device (10) comprising a first and a second hardware element (12; 14) tiltable to each other and accommodating a first and a second electrode (20b; 22b) 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 (50) is performed by a control unit (23) of the foldable electronic device and comprises the steps of: acquiring (S10) a first and a second charge variation signal indicative of environmental electric/electrostatic charge variations detected by the first and second electrodes; generating (S12) a differential signal (S D ) indicative of a difference between the first (S Q1 ) and the second (S Q2 ) charge variation signals; generating (S14, S16, S18, S20), as a function of the differential signal (S D ), one or more feature signals (S T ); and generating (S22), as a function of the one or more feature signals (S T ), a contact signal (Sc) indicative of the first or second states of the foldable electronic device (10) .

公开(公告)号：EP4140406A1

公开(公告)日：2023-03-01

申请号：EP22184649.6

申请日：2022-07-13

Applicant: STMicroelectronics S.r.l.

Inventor： RIVOLTA, Stefano Paolo ,  MURA, Roberto ,  FERRAINA, Michele

IPC: A61B5/11

Abstract: The device (10) has enhanced human activity recognition. The device comprises a processing unit (16) configured to detect a human activity using one more motion sensors (12), and enhances the detected human activity depending on whether the device is in an indoor environment or an outdoor environment. The processing unit (16) utilizes one or more electrostatic charge sensors (14) so as to determine whether the device is in an indoor environment or an outdoor environment.

公开(公告)号：EP3967976A1

公开(公告)日：2022-03-16

申请号：EP21306152.6

申请日：2021-08-26

Applicant: STMicroelectronics (Grand Ouest) SAS ,  STMicroelectronics S.r.l. ,  STMicroelectronics, Inc.

Inventor： PALELLA, Nicola Matteo ,  COLOMBO, Leonardo ,  DONADEL, Andrea ,  MURA, Roberto ,  JAIN, Mahaveer ,  PHILIPPE, Joelle

IPC: G01C21/16 ,  G01C21/28

Abstract: A method, comprising: receiving motion data from at least one inertial sensing unit (11) and absolute positioning data from a global navigation system (13) in a wheeled vehicle; applying pre-processing (21, 22, 23) to motion data as a function of absolute positioning data, obtaining pre-processed motion data and at least one estimated velocity value (v in , v GNSS ) of the wheeled vehicle; applying pipeline data processing (24) to pre-processed motion data as a function of the at least one estimated velocity value (v in , v GNSS ) of the wheeled vehicle, obtaining a calculated virtual vehicle velocity (v o ) as a result; applying position-velocity-attitude, PVA, filtering (23) to pre-processed motion data and to at least one of absolute positioning data and the calculated virtual vehicle velocity (v o ), obtaining fused data indicative of position, velocity and attitude information of the wheeled vehicle as a result. The pipeline data processing (24) comprises: high-pass or low-pass filtering (25) pre-processed motion data and obtaining filtered data as a result; applying frequency-domain transformation (26) to filtered data and obtaining, as a result, frequency analyzed data comprising individual spectral power density signals including a set of power-maximizing frequencies; calculating (27, 28), as a function of said set of power-maximizing frequencies, a wheel angular frequency signal (f w ) and a wheel size signal (C w ); calculating (29) said virtual vehicle velocity (v o ) as a function of said wheel angular frequency signal (f w ) and said wheel size signal (C w ).

公开(公告)号：EP3734224A2

公开(公告)日：2020-11-04

申请号：EP20171149.6

申请日：2020-04-23

Applicant: STMicroelectronics Inc. ,  STMicroelectronics S.r.l.

Inventor： JAIN, Mahaveer ,  CHOWDHARY, Mahesh ,  MURA, Roberto ,  PALELLA, Nicola Matteo ,  COLOMBO, Leonardo

IPC: G01C21/16 ,  G01C25/00

Abstract: A device (120) including microelectromechanical systems (MEMS) sensors are used in dead reckoning in conditions where Global Positioning System (GPS) signals or Global Navigation Satellite System (GNSS) signals are lost. The device (120) is capable of tracking the location of the device after the GPS/GNSS signals are lost by using MEMS sensors such as accelerometers and gyroscopes. By calculating a misalignment angle between a forward axis of a sensor frame of the device and a forward axis of a vehicle (110) frame using the data received from the MEMS sensors, the device can accurately calculate the location of a user or the vehicle of the device even without the GPS/GNSS signals. Accordingly, a device capable of tracking the location of the user riding in the vehicle in GPS/GNSS signals absent environment can be provided.