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公开(公告)号：US20240012518A1
公开(公告)日：2024-01-11
申请号：US18459249
申请日：2023-08-31
Inventor： Pengcheng Wen , Yuan Yun Wang
IPC: G06F3/041 , G06F3/044 , G09G3/3233
CPC classification number: G06F3/04184 , G06F3/04166 , G06F3/0443 , G09G3/3233 , G09G2330/023 , G09G2320/0247 , G09G2354/00
Abstract: A method of operating a display includes performing a non-synchronized touch scan pattern on a display with a controller coupled to the display. The non-synchronized touch scan pattern schedules touch scans independent of a refresh rate of the display. Upon the controller detecting a first synchronization pulse from a display controller coupled to the controller and the display, a first pulse-checking timer is started. Upon detecting a second synchronization pulse from the display controller and before the first pulse-checking timer expires, a first display refresh rate for the display is obtained from an interval between the first synchronization pulse and the second synchronization pulse. A synchronized touch scan pattern is performed with the controller, and is scheduled to avoid touch scans coinciding with refreshes of the display performed at the first display refresh rate.
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公开(公告)号：US11758098B2
公开(公告)日：2023-09-12
申请号：US17987250
申请日：2022-11-15
Applicant: STMicroelectronics LTD
Inventor： Elik Haran
CPC classification number: H04N9/3135 , H04N5/06 , H04N9/3155 , H04N9/3161 , H03K21/40 , H03L7/08
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：US11706392B2
公开(公告)日：2023-07-18
申请号：US17479176
申请日：2021-09-20
Applicant: STMicroelectronics LTD , STMicroelectronics S.r.l.
Inventor： Massimo Ratti , Eli Yaser , Naomi Petrushevsky , Yotam Nachmias
CPC classification number: H04N9/3182 , G06T1/20 , H04N9/3135
Abstract: A light projection system includes a MEMS mirror operating on a mirror drive signal to generate a mirror sense signal resulting from operation of the MEMS mirror based on the mirror drive signal. A mirror driver generates the mirror drive signal from a drive control signal. A controller receives the mirror sense signal from the MEMS mirror, obtains a first sample of the mirror sense signal at a first phase thereof, obtains a second sample of the mirror sense signal at a second phase thereof, wherein the first and second phases are separated by a half period of the mirror drive signal, with the second phase occurring after the first phase, and generates the drive control signal based on a difference between the first and second samples to keep the mirror drive signal separated in phase from the mirror sense signal by a desired amount of phase separation.
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公开(公告)号：US20230205359A1
公开(公告)日：2023-06-29
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：US11681140B2
公开(公告)日：2023-06-20
申请号：US16855301
申请日：2020-04-22
Applicant: STMicroelectronics Ltd
Inventor： Sivan Kinstlich , Offir Duvdevany
IPC: G02B26/08
CPC classification number: G02B26/0833
Abstract: Mirror control circuitry operates to control a movable mirror. The mirror control circuitry includes drive circuitry for providing a drive signal to the movable mirror, and a processor. The processor causes the drive circuitry to generate the drive signal so as to have pulses with leading edges occurring an offset period of time after a maximum opening angle of the movable mirror and trailing edges occurring an offset period of time before a zero crossing of the movable mirror. The processor may sample a mirror sense signal from the movable mirror at times at which a derivative of capacitance of the movable mirror with respect to time is zero, and then perform an action based upon the samples.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11553164B2
公开(公告)日：2023-01-10
申请号：US17012938
申请日：2020-09-04
Applicant: STMicroelectronics Ltd , STMicroelectronics S.r.l.
Inventor： Massimo Ratti , Eli Yaser , Naomi Petrushevsky , Yotam Nachmias
Abstract: A light projection system includes a microelectromechanical (MEMS) mirror configured to operate in response to a mirror drive signal and to generate a mirror sense signal as a result of the operation. A mirror driver is configured to generate the mirror drive signal in response to a drive control signal. A zero cross detector is configured to detect zero crosses of the mirror sense signal. A controller is configured to generate the drive control signal as a function of the detected zero crosses of the mirror sense signal.
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公开(公告)号：US20220094393A1
公开(公告)日：2022-03-24
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：US20220059486A1
公开(公告)日：2022-02-24
申请号：US17403752
申请日：2021-08-16
Applicant: STMICROELECTRONICS LTD
Inventor： Cheng-Yang SU
IPC: H01L23/00
Abstract: The present disclosure is directed to a die including a first contact with a first shape (e.g., a ring-shape contact) and second contact with a second shape different from the first shape (e.g., a cylindrical-shape contact). The first contact has an opening that extends through a central region of a surface of the first contact. A first solder portion is coupled to the surface of the first contact and the first solder portion has the first shape. A second solder portion is coupled to a surface of the second contact and the second solder portion has the second shape. The first solder portion and the second solder portion both have respective points furthest away from a substrate of the die. These respective points of the first solder portion and the second solder portion are co-planar with each other such that a standoff height of the die remains consistent when coupled to a PCB or an electronic component.
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公开(公告)号：US11251211B2
公开(公告)日：2022-02-15
申请号：US16721253
申请日：2019-12-19
Applicant: STMicroelectronics Ltd
Inventor： Yu-Tsung Lin
IPC: H01L27/14 , H01L27/146 , G01J3/51 , G01J1/42
Abstract: Disclosed herein is an ambient light sensor formed by a substrate, and an inner central area defined on the substrate, and a concentric polygonal shape defined on the substrate about the inner central area. The concentric polygonal shape is defined by concentric polygonal isolation regions and spoke shaped isolation regions extending through respective corners of the concentric polygonal isolation regions to the inner central area to thereby divide the concentric polygonal shape into a plurality of concentric polygonal regions, with each of the plurality of concentric polygonal regions divided into a plurality of trapezoidal sections. A plurality of photodiodes ae formed on the substrate such that each of the plurality of trapezoidal sections contains at least one photodiode. A color filter is applied to the plurality of trapezoidal sections and their respective photodiodes to thereby form a plurality of color channels.
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公开(公告)号：US11228239B2
公开(公告)日：2022-01-18
申请号：US16858907
申请日：2020-04-27
Applicant: STMicroelectronics (Tours) SAS , STMicroelectronics LTD
Inventor： Ghafour Benabdelaziz , Laurent Gonthier
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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