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公开(公告)号：US11943008B2
公开(公告)日：2024-03-26
申请号：US18153958
申请日：2023-01-12
Applicant: STMICROELECTRONICS LTD , STMICROELECTRONICS (ROUSSET) SAS
Inventor： Chia Hao Chen , Nicolas Cordier
CPC classification number: H04B5/0037 , H02J50/10 , H02J50/80 , H02J50/90 , H04B5/0031 , H04B5/0081
Abstract: The present disclosure relates to a method for aligning a smartphone providing NFC wireless power for charging a battery of a device, the method comprising: emitting, with a first NFC antenna of the smartphone, an NFC field for wirelessly charging the battery of the device comprising a second NFC antenna; obtaining, with the smartphone, a measured value of a signal representative of the NFC field strength between the smartphone and the device; determining, by the smartphone, a range of values of a plurality of ranges of values the measured value belongs; and emitting, by the smartphone, at least one notification signal to a user with a frequency determined by the determined range of values.
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公开(公告)号：US11936288B2
公开(公告)日：2024-03-19
申请号：US17548754
申请日：2021-12-13
Applicant: STMicroelectronics (Tours) SAS , STMicroelectronics LTD
Inventor： Ghafour Benabdelaziz , Laurent Gonthier
CPC classification number: H02M1/4208 , H02M7/1557 , H02M7/217 , H02M1/322
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.
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公开(公告)号：US20230356397A1
公开(公告)日：2023-11-09
申请号：US17661899
申请日：2022-05-03
Inventor： Benoit Rivot , Xingyu Wang
IPC: B25J9/16
CPC classification number: B25J9/1666 , B25J9/163 , B25J9/1694
Abstract: Cliff Detection in Robotic Devices A method of operating a robotic device includes: moving the robotic device towards an edge of a cliff while a ToF sensor senses reflected signals having been transmitted by the ToF sensor, the reflected signals being generated by the signals transmitted by the ToF sensor being reflected off a target object back to the ToF sensor, the ToF sensor being attached to a front of the robotic device and including an array of single-photon avalanche diode (SPAD) sensors; comparing a statistical distribution of the reflected signals received at a plurality of different rows of zones configured by the array of SPADs in a region of interest (ROI) of the ToF sensor and based on the comparing detecting an approaching of the edge of the cliff; and in response to detecting the approaching of the edge, changing a propulsion of the robotic device before reaching the edge.
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公开(公告)号：US11720205B2
公开(公告)日：2023-08-08
申请号：US17562552
申请日：2021-12-27
Inventor： Yuan Yun Wang , Pengcheng Wen , Yingying Sun , Yue Ding
CPC classification number: G06F3/04166 , G06F3/0446
Abstract: A method for reporting touch on a touchscreen includes detecting first touch data from the touchscreen corresponding to a first touch on the touchscreen; determining coordinates of the first touch from the first touch data; reporting the coordinates of the first touch at a first time; determining predicted coordinates of a second touch based on a linear regression of historical touch data; and reporting the predicted coordinates of the second touch at a second time, where the second time occurs after the first time.
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公开(公告)号：US20230092956A1
公开(公告)日：2023-03-23
申请号：US17979363
申请日：2022-11-02
Applicant: STMicroelectronics LTD , STMicroelectronics S.r.l.
Inventor： Alex DOMNITS , Elan ROTH , Davide TERZI , Luca MOLINARI , Marco BOSCHI
Abstract: A scanning laser projector includes an optical module with a housing defined by a top surface, a bottom surface, and sidewalls extending between the top surface and bottom surface to define an interior compartment within the housing. A given one of the sidewalls has an exit window defined therein. A first light detector is positioned at an interior surface of the given one of the sidewalls about a periphery of the exit window. A second light detector positioned at the interior surface of the given one of the sidewalls about the periphery of the exit window and on a different side thereof than the first light detector.
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Patent Agency Ranking
公开(公告)号：US20230070845A1
公开(公告)日：2023-03-09
申请号：US17987250
申请日：2022-11-15
Applicant: STMicroelectronics LTD
Inventor： Elik HARAN
Abstract: A control system includes a mirror controller generating horizontal and vertical mirror synchronization signals for a mirror based upon a mirror clock signal. Laser modulation circuitry generates horizontal and vertical laser synchronization signals as a function of first and second laser clock signals and generates control signals for a laser that emits a laser beam that impinges on the mirror. First synchronization circuitry receives the horizontal mirror synchronization signal and the horizontal laser synchronization signal, and modifies generation of the first laser clock signal to achieve alignment between the horizontal mirror synchronization signal and horizontal laser synchronization signal. Second synchronization circuitry receives the vertical mirror synchronization signal and the vertical laser synchronization signal, and modifies generation of the second laser clock signal to achieve alignment between the vertical mirror synchronization signal and vertical laser synchronization signal.
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公开(公告)号：US11588519B2
公开(公告)日：2023-02-21
申请号：US17475211
申请日：2021-09-14
Applicant: STMICROELECTRONICS LTD , STMICROELECTRONICS (ROUSSET) SAS
Inventor： Chia Hao Chen , Nicolas Cordier
Abstract: The present disclosure relates to a method for aligning a smartphone providing NFC wireless power for charging a battery of a device, the method comprising: emitting, with a first NFC antenna of the smartphone, an NFC field for wirelessly charging the battery of the device comprising a second NFC antenna; obtaining, with the smartphone, a measured value of a signal representative of the NFC field strength between the smartphone and the device; determining, by the smartphone, a range of values of a plurality of ranges of values the measured value belongs; and emitting, by the smartphone, at least one notification signal to a user with a frequency determined by the determined range of values.
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公开(公告)号：US11515805B2
公开(公告)日：2022-11-29
申请号：US17148246
申请日：2021-01-13
Applicant: STMicroelectronics LTD
Inventor： Laurent Gonthier
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.
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公开(公告)号：US20220308229A1
公开(公告)日：2022-09-29
申请号：US17655118
申请日：2022-03-16
Applicant: STMICROELECTRONICS (BEIJING) R&D CO., LTD , STMicroelectronics (Grenoble 2) SAS , STMICROELECTRONICS LTD.
Inventor： Etienne Bossart , Ji Nan Li , Cedric Patrick Jean Claude Colombo , Thomas Perotto
IPC: G01S17/894 , G01S17/10 , G01S7/4863 , G01S7/48 , H01L31/107
Abstract: The present disclosure concerns a method of measuring the distance between a device and an object comprising the steps of determination of a first estimated distance based on the time of flight of first light pulses having a first period; determination of a second estimated distance based on the time of flight of second light pulses having a second period different from the first period; determination based on the interval between the first and second estimated distances of whether the device is in a wraparound area among wraparound areas; and if the device is in a wraparound area among wraparound areas, adding to the first estimated distance a compensation having its value depending on the wraparound area.
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公开(公告)号：US20220140571A1
公开(公告)日：2022-05-05
申请号：US17083548
申请日：2020-10-29
Applicant: STMicroelectronics Ltd
Inventor： Alex DOMNITS
Abstract: A compact optical package includes an RGB laser unit containing red, green, and blue laser diodes within a single package, with three lenses adjacent the RGB laser unit to collimate red, green, and blue laser light emitted by the red, green, and blue laser diodes. A beam combiner combines the red, green, and blue laser light into a single RGB laser beam and also outputs a lower power feedback beam. The compact optical package also includes a movable mirror apparatus, and a fixed folding mirror upon which the single RGB laser beam output by the beam splitter impinges and reflects the single RGB laser beam toward the movable mirror apparatus. The movable mirror apparatus directs the single RGB laser beam through an exit window and to scan the single RGB laser beam in a scan pattern to form at least one desired image on a target.
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