公开(公告)号：US11528456B2

公开(公告)日：2022-12-13

申请号：US16806572

申请日：2020-03-02

Applicant: STMicroelectronics Ltd

Inventor： Elik Haran

IPC: G02B26/08 ,  H04N9/31 ,  H04N5/06 ,  H03L7/08 ,  H03K21/40

Abstract: A control system for a laser scanning projector includes a mirror controller generating horizontal and vertical mirror synchronization signals for an oscillating mirror apparatus based upon a mirror clock signal, and laser modulation circuitry. The laser modulation circuitry generates horizontal and vertical laser synchronization signals as a function of a received laser clock signal, and generates control signals for a laser that emits a laser beam that impinges on the oscillating mirror apparatus. Synchronization circuitry generates the laser clock signal and sends the laser clock signal to the laser modulation circuitry, receives the horizontal and vertical mirror synchronization signals from the mirror controller, receives the horizontal and vertical laser synchronization signals from the laser modulation circuitry, and modifies the laser clock signal so as to achieve alignment between the horizontal and vertical mirror synchronization signals and the horizontal and vertical laser synchronization signals.

公开(公告)号：US20220369006A1

公开(公告)日：2022-11-17

申请号：US17735968

申请日：2022-05-03

Applicant: STMICROELECTRONICS LTD ,  STMICROELECTRONICS (ROUSSET) SAS ,  STMicroelectronics Razvoj Polprevodnikov D.O.O.

Inventor： Nicolas CORDIER ,  Chia Hao CHEN ,  Karel BLAHA

IPC: H04Q9/06

Abstract: Provided is a device comprising a frequency demodulator and an amplitude demodulator. The device is configured to use, in a first mode, both the frequency demodulator and the amplitude demodulator in parallel and to activate a radio frequency identification (RFID) card mode or a Qi charger mode based on results provided by said demodulators.

公开(公告)号：US20220360190A1

公开(公告)日：2022-11-10

申请号：US17736668

申请日：2022-05-04

Applicant: STMICROELECTRONICS LTD

Inventor： Laurent GONTHIER

IPC: H02M7/155 ,  H02M1/42

Abstract: The present description concerns a converter comprising an AC-DC conversion stage comprising a first thyristor, a first power supply circuit delivering a first reference voltage between a first node and a second node, and a second power supply circuit delivering a second reference voltage between third and fourth nodes, the cathode of the first thyristor being coupled to the first node of the first power supply circuit by a first switch and being connected to the fourth node, the second power supply circuit comprising a first rectifying element coupled to the second node of the first power supply circuit and coupled to the third node.

公开(公告)号：US20220342205A1

公开(公告)日：2022-10-27

申请号：US17238596

申请日：2021-04-23

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

Inventor： Davide TERZI ,  Gianluca MENDICINO ,  Dadi SHARON

IPC: G02B26/10 ,  H02N2/10 ,  H02N2/14 ,  G02B26/08

Abstract: Disclosed herein is a microelectromechanical (MEMS) device, including a rotor and a first piezoelectric actuator mechanically coupled to the rotor. The first piezoelectric actuator is electrically coupled between a first signal node and a common voltage node. A second piezoelectric actuator is mechanically coupled to the rotor, and is electrically coupled between a second signal node and the common voltage node. Control circuitry includes a drive circuit configured to drive the first and second piezoelectric actuators, a sense circuit configured to process sense signals generated by the first and second pizeoelectric actuators, and a multiplexing circuit. The multiplexing circuit is configured to alternate between connecting the drive circuit to the first piezoelectric actuator while connecting the sense circuit to the second piezoelectric actuator, and connecting the drive circuit to the second piezoelectric actuator while connecting the sense circuit to the first piezoelectric actuator.

公开(公告)号：US20220239335A1

公开(公告)日：2022-07-28

申请号：US17575523

申请日：2022-01-13

Applicant: STMicroelectronics Ltd ,  STMicroelectronics (Rousset) SAS

Inventor： Nicolas CORDIER ,  Chia-Hao CHEN

IPC: H04B5/00 ,  H04W24/08

Abstract: A method is provided that is implemented by a first NFC device configured in reader mode. The method includes evaluating an information about the coupling between the first NFC device and a second NFC device configured in card mode, as a function of the position of an antenna of the first NFC device with respect to an antenna of the second NFC device. The method further includes indicating the information by a user interface of the first device.

公开(公告)号：US20220208819A1

公开(公告)日：2022-06-30

申请号：US17556604

申请日：2021-12-20

Applicant: STMICROELECTRONICS LTD ,  STMICROELECTRONICS PTE LTD

Inventor： David GANI ,  Yiying KUO

IPC: H01L27/146 ,  H01L23/498

Abstract: The present disclosure is directed to a package that includes a transparent layer that is on and covers a sensor of a die as well as a plurality of electrical connections that extend from a first surface of the package to the second surface of the package opposite to the first surface. In at least one embodiment of a package, the electrical connections each include a conductive structure that extends through the transparent layer to a first side of a corresponding contact pad of the die, and at least one electrical that extends into the second surface of the die to a second side of the corresponding contact pad that is opposite to the first side. In at least another embodiment of a package, the electrical connections include a conductive structure that extends through a molding compound to a first side of a corresponding contact pad of the die, and at least one electrical via that extends into the second surface of the die to a second side of the corresponding contact pad opposite to the first side.

公开(公告)号：US20220137400A1

公开(公告)日：2022-05-05

申请号：US17509823

申请日：2021-10-25

Applicant: STMicroelectronics LTD

Inventor： Alex DOMNITS ,  Shlomy ERLICH

IPC: G02B26/10 ,  G02B27/01

Abstract: An optical package includes a beam combiner that combines laser light from a laser unit into a single laser beam, a movable mirror apparatus, and a fixed folding mirror which reflects the single laser beam toward the movable mirror apparatus. Beam equalizer optics cause increase of a slow axis divergence rate of the single laser beam such that its slow axis divergence rate is equal to its fast axis divergence rate. The movable mirror apparatus directs the single laser beam through an exit window. The beam equalizer optics include at least one negative spherical lens shaped such that a slow axis divergence rate of incident light is increased but a fast axis divergence rate of incident light is unaltered.

公开(公告)号：US20220123650A1

公开(公告)日：2022-04-21

申请号：US17568247

申请日：2022-01-04

Applicant: STMicroelectronics LTD

Inventor： Laurent GONTHIER

IPC: H02M1/32

Abstract: A circuit includes two thyristors coupled in anti-series. An AC capacitor has first and second electrodes respectively coupled to two different electrodes of the two thyristors. The first and second electrodes are coupled to receive an AC voltage. A control circuit detects discontinuance of application of the AC voltage to the AC capacitor and in response thereto simultaneously applies same gate currents to the two thyristors. A current path through the two thyristors (one passing current in forward mode and the other in reverse mode) discharges a residual voltage stored on the AC capacitor.

公开(公告)号：US20210336533A1

公开(公告)日：2021-10-28

申请号：US16858907

申请日：2020-04-27

Applicant: STMicroelectronics (Tours) SAS ,  STMicroelectronics LTD

Inventor： Ghafour BENABDELAZIZ ,  Laurent GONTHIER

IPC: H02M1/42 ,  H02M7/217 ,  H02M7/155

Abstract: An AC capacitor is coupled to a totem-pole type PFC circuit. In response to detection of a power input disconnection, the PFC circuit is controlled to discharge the AC capacitor. The PFC circuit includes a resistor and a first MOSFET and a second MOSFET coupled in series between DC output nodes with a common node coupled to the AC capacitor. When the disconnection event is detected, one of the first and second MOSFETs is turned on to discharge the AC capacitor with a current flowing through the resistor and the turned on MOSFET. Furthermore, a thyristor may be simultaneously turned on, with the discharge current flowing through a series coupling of the MOSFET, resistor and thyristor. Disconnection is detected by detecting a zero-crossing failure of an AC power input voltage or lack of input voltage decrease or input current increase in response to MOSFET turn on for a DC input.

公开(公告)号：US20210226553A1

公开(公告)日：2021-07-22

申请号：US17148246

申请日：2021-01-13

Applicant: STMicroelectronics LTD

Inventor： Laurent GONTHIER

IPC: H02M7/155 ,  H02J7/00 ,  H02M1/42

Abstract: A capacitive element has its terminals coupled together by two thyristors electrically in antiparallel. The discharge of the capacitive element is controlled by the application of a gate current to one thyristor of the two thyristors which is in a reverse-biased state in response to a voltage stored across the terminals of the capacitive element. The reverse-biased thyristor responds to the applied gate current by passing a leakage current to discharge the stored voltage.