公开(公告)号：US20210126627A1

公开(公告)日：2021-04-29

申请号：US17077833

申请日：2020-10-22

Applicant: STMicroelectronics S.r.l.

Inventor： Domenico TRIPODI ,  Luca GIUSSANI ,  Simone Ludwig DALLA STELLA

IPC: H03K3/017

Abstract: A PWM signal generator circuit includes a multiphase clock generator that generates a number n of phase-shifted clock phases having the same clock period and being phase shifted by a time corresponding to a fraction 1/n of the clock period. The PWM signal generator circuit determines for each switch-on duration first and second integer numbers, and for each switch-off duration third and fourth integer numbers. The first integer number is indicative of the integer number of clock periods of the switch-on duration and the second integer number is indicative of the integer number of the additional fractions 1/n of the clock period of the switch-on duration. The third integer number is indicative of the integer number of clock periods of the switch-off duration, and the fourth integer number is indicative of the integer number of the additional fractions 1/n of the clock period of the switch-off duration.

公开(公告)号：US10987007B2

公开(公告)日：2021-04-27

申请号：US16167817

申请日：2018-10-23

Applicant: STMicroelectronics S.r.l.

Inventor： Francesco Rundo ,  Sabrina Conoci ,  Piero Fallica

IPC: A61B5/02 ,  A61B5/024 ,  A61B5/04 ,  B60W40/08 ,  G16H50/30 ,  A61B5/00 ,  A61B5/0402

Abstract: A method of processing electrophysiological signals includes: receiving, over a limited time duration, sample electrocardiography (ECG) signals indicative of heart pulsatile activity occurring with a variable heart rate, wherein receiving the sample ECG signals is discontinued at an expiry of the limited time duration; receiving photoplethysmography (PPG) signals indicative of the heart pulsatile activity; determining a correlation between the sample ECG signals and the PPG signals; determining reconstructed ECG signals from the PPG signals as a function of the correlation between the sample ECG signals and the PPG signals; and estimating a heart rate variability of the variable heart rate as a function of the reconstructed ECG signals.

公开(公告)号：US20210119105A1

公开(公告)日：2021-04-22

申请号：US17070548

申请日：2020-10-14

Applicant: STMicroelectronics S.r.l.

Inventor： Luca SEGHIZZI ,  Federico VERCESI ,  Claudia PEDRINI

IPC: H01L41/083 ,  H01L41/113 ,  H01L41/25 ,  H01L41/35

Abstract: A transducer includes a supporting body and a suspended structure mechanically coupled to the supporting body. The suspended structure has a first and a second surface opposite to one another along an axis, and is configured to oscillate in an oscillation direction having at least one component parallel to the axis. A first piezoelectric transducer is disposed on the first surface of the suspended structure, and a second piezoelectric transducer is disposed on the second surface of the suspended structure.

公开(公告)号：US20210117501A1

公开(公告)日：2021-04-22

申请号：US17071577

申请日：2020-10-15

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Paolo BRAMANTI

IPC: G06F17/16 ,  G01P15/18 ,  G01R33/00 ,  G01V7/06

Abstract: A method and system for rotating a vector, including at least one lookup table (LUT) including data corresponding to the vector being rotated around a first angle and a second angle, processing circuitry configured for accessing the at least one LUT for incrementally rotating the vector around the first and second angles, where accessing includes identifying an LUT input entry and selecting a corresponding LUT output entry, the corresponding output entry including an incremental angular rotation (IAR) of the vector around the first angle or the second angle, and a comparator configured to generate a comparator signal based upon comparing a counter incremented by the IAR with the first angle or the second angle, the processing circuitry further configured to iteratively access the at least one LUT, based on the comparator signal, for completing the incremental rotation of the vector around the first angle and the second angle.

公开(公告)号：US20210117011A1

公开(公告)日：2021-04-22

申请号：US17116921

申请日：2020-12-09

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Carlo CRIPPA ,  Rossella BASSOLI

IPC: G06F3/01 ,  G06F9/448 ,  G06F1/16 ,  G05B19/042

Abstract: A programmable data processing circuit is configured for receiving sensor signals indicative of gestures for identification by the processing circuit. The processing circuit applies to the sensor signals finite state machine processing resources to provide identification output signals indicative of gestures identified as a function of the sensor signals. A plurality of finite state machine processing programs loaded into the processing circuit include a data section and an instruction section. The data section including a fixed size part specifying respective processing resources used by the programs in the plurality of finite state machine processing programs and a variable size part with respective sizes for allocating the respective processing resources used by the programs in the plurality of finite state machine processing programs. The instruction section including conditions and commands for execution by the respective processing resources used by the programs by operating on data located in the respective data sections.

公开(公告)号：US20210117010A1

公开(公告)日：2021-04-22

申请号：US17067519

申请日：2020-10-09

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Federico RIZZARDINI ,  Lorenzo BRACCO ,  Stefano Paolo RIVOLTA

IPC: G06F3/01 ,  G06F1/16 ,  G01P15/14

Abstract: An electronic device has an input which, in operation, receives an input stream of accelerometer data samples indicative of acceleration values along at least one axis. The devices includes circuitry, coupled to the input. The circuitry, in operation, executes an automatic-learning algorithm on blocks of samples of the input stream of accelerometer data samples to identify, for each block, a corresponding condition-of-user-movement from among a plurality of determined conditions-of-user-movement. The circuitry generates a plurality of streams of samples based on the input stream of accelerometer data samples, and for each condition of movement identified, selects a corresponding stream of samples of the plurality of streams of samples. The circuitry executes a wrist-tilt gesture detection algorithm using samples of the selected stream of the plurality of streams of samples.

公开(公告)号：US20210114867A1

公开(公告)日：2021-04-22

申请号：US17072813

申请日：2020-10-16

Applicant: STMicroelectronics S.r.l.

Inventor： Enri DUQI ,  Fabrizio CERINI ,  Lorenzo BALDO

IPC: B81B7/02 ,  A24F40/51 ,  B81B7/00

Abstract: A MEMS switch is actuatable by a fluid, and includes a piezoelectric pressure sensor that detects the movement of a fluid generating a negative pressure. The piezoelectric pressure sensor is formed by a chip of semiconductor material having a through cavity and a sensitive membrane, which extends over the through cavity and has a first and a second surface. The piezoelectric pressure sensor is mounted on a face of a board having a through hole so that the through cavity overlies and is in fluid connection with the through hole. The board has a fixing structure, which enables securing in an opening of a partition wall separating a first and a second space from each other. The board is arranged so that the first surface of the sensitive membrane faces the first space, and the second surface of the sensitive membrane faces the second space.

公开(公告)号：US10985269B2

公开(公告)日：2021-04-20

申请号：US16376468

申请日：2019-04-05

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Paolo Bramanti ,  Alberto Pagani

IPC: H01L29/778 ,  H01L29/10 ,  H01L29/40 ,  H01L29/417 ,  H01L29/423 ,  H01L29/66 ,  H03K17/687 ,  H01L29/205 ,  H01L29/20 ,  H01L21/02 ,  H01L27/06

Abstract: Embodiments are directed to two-dimensional electron gas (2DEG)-confined 2DEG devices and methods. One such device includes a substrate and a heterostructure on the substrate. The heterostructure includes a first semiconductor layer, a second semiconductor layer, and a 2DEG layer between the first and second semiconductor layers. The device further includes a 2DEG device having a conduction channel in the 2DEG layer. An isolation electrode overlies the heterostructure and at least partially surrounds a periphery of the 2DEG device. The isolation electrode, in use, interrupts the 2DEG layer in response to an applied voltage.

公开(公告)号：US20210104445A1

公开(公告)日：2021-04-08

申请号：US17039289

申请日：2020-09-30

Applicant: STMicroelectronics S.r.l.

Inventor： Simone RASCUNA' ,  Claudio CHIBBARO ,  Alfio GUARNERA ,  Mario Giuseppe SAGGIO ,  Francesco LIZIO

IPC: H01L23/31 ,  H01L29/16 ,  H01L21/04 ,  H01L21/56

Abstract: An electronic power device includes a substrate of silicon carbide (SiC) having a front surface and a rear surface which lie in a horizontal plane and are opposite to one another along a vertical axis. The substrate includes an active area, provided in which are a number of doped regions, and an edge area, which is not active, distinct from and surrounding the active area. A dielectric region is arranged above the front surface, in at least the edge area. A passivation layer is arranged above the front surface of the substrate, and is in contact with the dielectric region in the edge area. The passivation layer includes at least one anchorage region that extends through the thickness of the dielectric region at the edge area, such as to define a mechanical anchorage for the passivation layer.

公开(公告)号：US10964646B2

公开(公告)日：2021-03-30

申请号：US15854456

申请日：2017-12-26

Applicant: STMicroelectronics S.r.l.

Inventor： Alberto Pagani ,  Giovanni Girlando ,  Federico Giovanni Ziglioli ,  Alessandro Finocchiaro

IPC: H01L23/00 ,  G01R31/28 ,  H01L21/762 ,  H01L23/58 ,  H01L21/66 ,  H02J50/20

Abstract: A method of making an integrated circuit (IC) includes forming circuitry over a top surface of a semiconductor substrate having the top surface and an opposite bottom surface. An antenna is formed in an interconnect layer formed above the semiconductor substrate, where the antenna is coupled to circuitry. A seal ring is formed around a periphery of the interconnect layer. The seal ring is disposed around the antenna and the circuitry. A trench with a solid-state insulating material is formed. The trench extends vertically into the semiconductor substrate and extends laterally across the IC.