公开(公告)号：EP3792640A1

公开(公告)日：2021-03-17

申请号：EP20191476.9

申请日：2020-08-18

Applicant: STMicroelectronics S.r.l.

Inventor： VALLE, Stefano ,  POLLONI, Flavio

IPC: G01R27/08 ,  G01R27/14 ,  H03F3/217

Abstract: Admittance of an electrical load such as a loudspeaker in an automotive audio system is calculated by:
- generating (10) a first voltage signal ( sin( 2 πf in kT)) and a second voltage signal ( cos(2πf in kT)) in quadrature to the first voltage signal,
- injecting one ( sin ( 2πf in kT) ) of these voltage signals into a signal propagation path towards the electrical load,
- sensing (CS) a current signal ( i k ) flowing through the electrical load as a result of the voltage signal ( sin(2 π f in kT)) injected into the signal propagation path towards the electrical load,
- processing (101 to 108) the first ( sin(2πf in kT) ) and second ( cos(2πf in kT) ) voltage signals and the current signal ( i k ) sensed (CS) by executing an approximation procedure (LMS, for instance) of the current signal ( i k ) sensed (CS) via a linear combination of the first ( sin(2πf in kT) ) and second ( cos(2 π f in kT) ) voltage signals via a first ( a ) and a second ( b ) linear combination coefficient.
The approximation procedure comprises updating ( a', a"; b', b" ) the first ( a ) and second ( b ) linear combination coefficients until a target approximation (108) is reached. An admittance of the electrical load is calculated as a function the updated values of the first ( a ) and second ( b ) linear combination coefficients when the target approximation is reached (108).

公开(公告)号：EP3791787A1

公开(公告)日：2021-03-17

申请号：EP20195573.9

申请日：2020-09-10

Applicant: STMicroelectronics S.r.l.

Inventor： PASSANITI, Fabio ,  ALESSI, Enrico Rosario

IPC: A61B5/11 ,  G01C22/00

Abstract: A system for detecting steps of a user, comprising: a processing unit (2); an electrostatic-charge sensor (6), configured to detect a variation of electrostatic charge of the user during a step of the user and generate a charge-variation signal (S Q ); an accelerometer (4) configured to detect an acceleration as a consequence of the step and generate an acceleration signal (S A ). The processing unit (2) is configured to: acquire the charge-variation signal (S Q ); acquiring the acceleration signal (S A ); detect, in the charge-variation signal, a first characteristic associated with the step; detect, in the acceleration signal, a second characteristic identifying the step. If both of the first and second characteristics have been detected, the presence of the step can be validated.

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：EP3745743A1

公开(公告)日：2020-12-02

申请号：EP20176922.1

申请日：2020-05-27

Applicant: STMicroelectronics S.r.l.

Inventor： CERINI, Fabrizio ,  ADORNO, Silvia

IPC: H04R17/02 ,  H04R31/00 ,  H04R7/08 ,  H04R7/14

Abstract: A piezoelectric microelectromechanical acoustic transducer (10), having a substrate (12) of semiconductor material with a frame portion (14) and a through cavity (13) defined internally by the frame portion; an active membrane (15), suspended above the through cavity and anchored, at a peripheral portion thereof, to the frame portion of the substrate by an anchorage structure (16), a plurality of piezoelectric sensing elements (19) carried by a front surface (15a) of the active membrane so as to detect mechanical stresses of the active membrane; a passive membrane (25), suspended above the through cavity, underneath the active membrane, interposed between the through cavity and a rear surface (15b) of the active membrane; and a pillar element (26), which fixedly couples, and is centrally interposed between, the active membrane and the passive membrane. A ventilation hole (28) passes through the entire active membrane (15), the passive membrane (25) and the pillar element (26) so as to set the through cavity (13) in fluidic communication with the front surface (15a) of the active membrane (15).

公开(公告)号：EP3725531A1

公开(公告)日：2020-10-21

申请号：EP20169708.3

申请日：2020-04-15

Applicant: STMicroelectronics S.r.l.

Inventor： GIUSTI, Domenico ,  PRELINI, Carlo Luigi ,  TENTORI, Lorenzo

IPC: B41J2/14 ,  B41J2/16

Abstract: An ejection device (1) for a fluid (6), comprising: a first semiconductor wafer (2), housing, on a first side thereof, a piezoelectric actuator (3) and an outlet channel (33) for the fluid (6) alongside the piezoelectric actuator (3); a second semiconductor wafer (4) having, on a first side thereof, a recess (10) and, on a second side thereof opposite to the first side, at least one inlet channel (9) for said fluid (6) fluidically coupled to the recess (10); and a dry-film (8) coupled to a second side, opposite to the first side, of the first wafer. The first and the second wafers are coupled together so that the piezoelectric actuator and the outlet channel are set directly facing, and completely contained in, the recess (10) that forms a reservoir for the fluid (6). The dry-film has an ejection nozzle (13).

公开(公告)号：EP3716667A1

公开(公告)日：2020-09-30

申请号：EP20162306.3

申请日：2020-03-11

Applicant: STMicroelectronics S.r.l.

Inventor： VENEROSO, Mr. Amedeo

IPC: H04W12/00 ,  H04W4/50 ,  H04W4/70

Abstract: A method for managing profiles in a smart card (116) integrated in in a local communication device (14; 114) configured to operate with a mobile communication network, said local communication device (14; 114) comprising a software profile management module (15; 115) configured to store profiles in said smart card (16; 116) and perform operations on said profiles (P) stored in said smart card (16; 116) upon receiving an operation request (OR) from the mobile communication network (11; 111).
Said method comprises
storing (S3), in particular by an entity authorized to provide eUICC profiles and/or request operations regarding a profile to be executed locally in the smart card (116), an operation request (OR) in a repository server (12), said operation request (OR) including an indication of a requested operation (RO) and an identifier (UI) of the smart card (16) on which the requested operation (RO) is to be performed,
checking (S1) periodically by the profile management module (15) in an user equipment (14) comprising an integrated smart card (16) with a given card identifier (UI) if an operation request (OR) coprising a card identifier corresponding to said card identifier (UI) of the profile management module (15) is available in the repository server (12),
if said operation request (OR) with a corresponding card identifier (UI) is available in the repository server (12), executing the requested operation at the profile management module (15).

公开(公告)号：EP3712869A1

公开(公告)日：2020-09-23

申请号：EP20164120.6

申请日：2020-03-19

Applicant: STMicroelectronics S.r.l.

Inventor： ZANCANATO, Alberto ,  FERRAINA, Michele ,  DAMENO, Matteo ,  TESI, Mario

IPC: G08B21/22 ,  G08B21/24 ,  B60N2/00 ,  G08B21/02

Abstract: A child safety seat (202) includes a motion sensor (214), e.g., an accelerometer, and a pressure sensor (116), e.g., an air pressure sensor. The motion sensor (114) is configured to detect a motion state of a vehicle (220) where the child safety seat is installed, e.g., whether the vehicle is moving or non-moving. The pressure sensor (116) is configured to detect a motion state of a door (222, 224) of the vehicle, e.g., a door open/close motion. Based on the information detected by the motion sensor and the pressure sensor, a controller (132) determines whether an awareness scenario occurs.

公开(公告)号：EP3425552B1

公开(公告)日：2020-09-02

申请号：EP18178541.1

申请日：2018-06-19

Applicant: STMicroelectronics Application GmbH ,  STMicroelectronics S.r.l.

Inventor： COLOMBO, Roberto ,  BERTONI, Guido Marco ,  ORLANDO, William ,  VITTIMANI, Roberta

IPC: G06F21/72 ,  G06F21/60 ,  G06F21/76 ,  H04L9/08

公开(公告)号：EP3462508B1

公开(公告)日：2020-08-12

申请号：EP18197797.6

申请日：2018-09-28

Applicant: STMicroelectronics S.r.l.

Inventor： PATTI, Davide Giuseppe ,  VALVO, Giuseppina ,  SANFILIPPO, Delfo Nunziato

IPC: H01L49/02 ,  H01G4/30 ,  H01G4/33 ,  H01G2/22 ,  H01G4/14 ,  H01G4/252

公开(公告)号：EP3522373B1

公开(公告)日：2020-08-05

申请号：EP19153337.1

申请日：2019-01-23

Applicant: STMicroelectronics S.r.l.

Inventor： BOTTI, Edoardo ,  GONANO, Giovanni

IPC: H03F3/217 ,  H03K17/00