公开(公告)号：EP4224285A1

公开(公告)日：2023-08-09

申请号：EP23175613.1

申请日：2018-05-17

Applicant: STMicroelectronics S.r.l.

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

IPC: G06F1/16

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 ).

公开(公告)号：EP3771964A1

公开(公告)日：2021-02-03

申请号：EP20188656.1

申请日：2020-07-30

Applicant: STMicroelectronics S.r.l.

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

IPC: G06F1/3234 ,  G06F3/03 ,  G06F3/038 ,  G06F3/041 ,  G06F3/0346

Abstract: A pointing method to generate screen-frame displacement data based on 3D-space movements of a pointing electronic device (1), envisages: receiving attitude quaternion data (q), indicative of an orientation of the electronic device (1) in the 3D-space, generated by a sensor-fusion algorithm from joint processing of an acceleration signal (Acc), indicative of acceleration acting on the pointing electronic device (1) along three reference axes (X, Y, Z) of the 3D-space, and of a gyroscope signal (Gyro), indicative of angular rate of rotation of the pointing electronic device (1) around the three reference axes (X, Y, Z) of the 3D-space; processing the quaternion data (q) to determine an orientation difference between a current orientation and a previous orientation of the electronic device (1) in the 3D-space; translating the orientation difference from the quaternion space to tilt-compensated angular rate of rotation (g x , g y , g z ) of the electronic device (1) in the 3D-space; and generating the screen-frame displacements based on the tilt-compensated angular rate of rotation in the 3D-space.

公开(公告)号：EP3705353A1

公开(公告)日：2020-09-09

申请号：EP20161653.9

申请日：2020-03-06

Applicant: STMicroelectronics S.r.l.

Inventor： RIVOLTA, Stefano Paolo ,  RIZZARDINI, Federico ,  ARCERI, Daniele ,  RIZZO PIAZZA RONCORONI, Alessandra Maria ,  BIANCO, Marco

IPC: B60R25/24 ,  G07C9/00

Abstract: A remote access device (200) and method of operation thereof are provided for accessing a physical object or location. The remote access device includes an accelerometer (204), a wireless transmitter (206), and control circuitry (202). The control circuitry (202) causes the wireless transmitter (206) to transition between a first operating mode (108) and a second operating mode (110) in response to receiving signals from the accelerometer (204) indicating a first change in motion states of the remote access device. The control circuitry (202) causes the wireless transmitter (206) to transition between the first operating mode (108) and the second operating mode (108) in response to receiving signals from the accelerometer (204) indicating a second change in motion states of the remote access device. The control circuitry (202) further causes the wireless transmitter (206) to transition between the first operating mode (108) and the second operating mode (110) in response to receiving signals from the accelerometer 104 indicating a third change in motion states of the remote access device.

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：EP3859498A1

公开(公告)日：2021-08-04

申请号：EP21154066.1

申请日：2021-01-28

Applicant: STMicroelectronics S.r.l.

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

IPC: G06F3/0346 ,  G06F3/0354

Abstract: In a pointing electronic device (1), a sensor fusion processing stage (5) generates an orientation estimation quantity (β') indicative of an orientation about a longitudinal axis (Y) based on a sensor fusion algorithm envisaging processing of acceleration (Acc) and gyroscopic (Gyro) signals; and a pointing determination stage implements an orientation-compensation of the gyroscopic signal as a function of the orientation estimation and generates screen-frame displacement data corresponding to 3D-space movements of the pointing electronic device based on the orientation-compensated gyroscopic signal. A first processing block (20) improves a starting value of the roll estimation, used to decrease an initial roll estimation error, by storing past values of the acceleration signal, during a time interval preceding start-up; and, upon start-up, retrieving and processing the stored past values to generate processed acceleration data, used by the sensor fusion processing stage to initialize the sensor fusion algorithm and generate the starting value of the roll estimation quantity. A second processing block 22 increases the speed of recovery of the initial orientation estimation error after start-up. (Figure 5)

公开(公告)号：EP3771968A1

公开(公告)日：2021-02-03

申请号：EP20188660.3

申请日：2020-07-30

Applicant: STMicroelectronics S.r.l.

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

IPC: G06F3/033 ,  G06F3/0346 ,  G06F3/038

Abstract: A pointing method to generate screen-frame displacement data based on 3D-space movements of a pointing electronic device (1), envisages: receiving a gravity vector (g), having components (g x , g y , g z ) corresponding to respective projections of gravity acceleration ( g ) on three axes (X, Y, Z) of a 3D reference system associated with the pointing electronic device (1), generated by a sensor-fusion algorithm from joint processing of an acceleration signal (Acc), indicative of acceleration acting on the pointing electronic device (1) along the three axes (X, Y, Z) of the 3D reference system, and of a gyroscope signal (Gyro), indicative of angular rate of rotation of the pointing electronic device (1) around the three axes (X, Y, Z) of the 3D reference system. The method further envisages: 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').

公开(公告)号：EP4357889A1

公开(公告)日：2024-04-24

申请号：EP23200099.2

申请日：2023-09-27

Applicant: STMicroelectronics S.r.l.

Inventor： RIVOLTA, Stefano Paolo ,  RIZZARDINI, Federico

IPC: G06F3/038 ,  G06F1/16 ,  G06F3/041

CPC classification number: G06F3/0418 ,  G06F1/1643 ,  G06F1/1626 ,  G06F1/1616 ,  G06F1/1677 ,  G06F1/1694 ,  G06F3/038

Abstract: A method includes receiving electrostatic sensor data in a processor of an electronic device from an electrostatic sensor mounted behind a touchscreen of the electronic device and using the electrostatic sensor data to determine when the touchscreen is being used. Based on whether or not the touchscreen is being used, an on-table detection (OTD) algorithm is selected from a plurality of available OTD algorithms. In one or more examples, the OTD algorithm may also be selected based on the current device mode of the electronic device, which may be determined from a lid angle, a screen angle, and a keyboard angle of the electronic device. The selected OTD algorithm is run to determine whether or not the electronic device is located on a stationary or stable surface.

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.