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1. 发明公开

US20240012518A1 SYSTEM AND METHOD FOR DISPLAY SYNCHRONIZATION 审中-公开
公开(公告)号：US20240012518A1
公开(公告)日：2024-01-11
申请号：US18459249
申请日：2023-08-31
申请人： STMICROELECTRONICS (BEIJING) R&D CO., LTD , STMICROELECTRONICS LTD
发明人： Pengcheng Wen , Yuan Yun Wang
IPC分类号： G06F3/041 , G06F3/044 , G09G3/3233
CPC分类号： G06F3/04184 , G06F3/04166 , G06F3/0443 , G09G3/3233 , G09G2330/023 , G09G2320/0247 , G09G2354/00
摘要： 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.

2. 发明公开

US20230400904A1 MOTION BASED DEVICE WAKE UP 审中-公开
公开(公告)号：US20230400904A1
公开(公告)日：2023-12-14
申请号：US17806813
申请日：2022-06-14
申请人： STMicroelectronics, Inc. , STMICROELECTRONICS (BEIJING) R&D CO. LTD , STMicroelectronics (Grenoble 2) SAS
发明人： Arnaud Deleule , Kalyan-Kumar Vadlamudi-Reddy , Darin K Winterton , Jihong Chen , Olivier Lemarchand
IPC分类号： G06F1/3231 , G06F1/3234 , G01S13/08
CPC分类号： G06F1/3231 , G06F1/3265 , G01S13/08
摘要： A method for operating an electronic device includes while a display is in low power mode, detecting based on data collected by a time of flight (ToF) sensor, a movable object within a field of view of the electronic device; in response to the detecting initiating a period of detection having a plurality of frames, the period of detection being a time period over which a distance value indicative of a distance between the movable object and the display is detected; for each of the plurality of frames, changing the distance value to reflect whether the movable object is moving near or further from the electronic device; detecting that the distance value after the period of detection is less than a threshold distance value indicative of the movable object approaching the display; if the distance value is less than the threshold distance value, waking up the display.

3. 发明公开

US20230266845A1 TOUCHSCREEN 审中-公开
公开(公告)号：US20230266845A1
公开(公告)日：2023-08-24
申请号：US17677119
申请日：2022-02-22
申请人： STMicroelectronics (BEIJING) R&D Co., LTD , STMicroelectronics (Shenzhen) R&D Co., Ltd.
发明人： Bowei Chen , Yue Ding , Guodong Sun
IPC分类号： G06F3/041 , G06F3/044
CPC分类号： G06F3/0418 , G06F3/0446 , G06F3/0412 , G06F3/0447
摘要： A method for operating an electronic device includes detecting, by a touchscreen controller, a touch point on a touchscreen; determining, by the touchscreen controller, coordinates of the touch point; scaling, by the touchscreen controller, up the coordinates of the touch point to obtain scaled up coordinates by overwriting a reserved portion of a touch event protocol with additional information corresponding to the coordinates of the touch point; reporting, by the touchscreen controller, the scaled up coordinates of the touch point to an application processor; and determining, by the application processor, the coordinates of the touch point with an increased resolution by converting the scaled up coordinates into a floating point value.

4. 发明公开

US20230205359A1 TOUCH REPORT RATE OF TOUCHSCREEN 审中-公开
公开(公告)号：US20230205359A1
公开(公告)日：2023-06-29
申请号：US17562552
申请日：2021-12-27
申请人： STMICROELECTRONICS LTD. , STMICROELECTRONICS (BEIJING) R&D CO. LTD
发明人： Yuan Yun Wang , Pengcheng Wen , Yingying Sun , Yue Ding
IPC分类号： G06F3/041 , G06F3/044
CPC分类号： G06F3/04166 , G06F3/0446
摘要： 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.

5. 发明授权

US11416095B2 Touch screen controller for determining relationship between a user's hand and a housing of an electronic device 有权
公开(公告)号：US11416095B2
公开(公告)日：2022-08-16
申请号：US15151247
申请日：2016-05-10
申请人： STMicroelectronics Asia Pacific Pte Ltd , STMicroelectronics (Beijing) R&D Co. Ltd
发明人： Tae-gil Kang , Hang Yin , Cam Chung La
IPC分类号： G06F3/041 , G06F3/044
摘要： An electronic device described herein includes a touch screen for a touch sensitive display carried by a portable housing. The electronic device is configured to operate in a high detection threshold mode to determine whether an object is in contact with the touch sensitive display, and operate in a low detection threshold mode to determine whether the object is adjacent to the touch sensitive display, based on lack of detection of the object being in contact with the touch sensitive display. The electronic device is further configured to determine whether the object is in contact with a peripheral edge of the portable housing by determining whether the object is adjacent opposite sides of the touch sensitive display, based on detection of the object being adjacent to the touch sensitive display.

6. 发明授权

US10970192B2 Debugging support unit for microprocessor 有权
公开(公告)号：US10970192B2
公开(公告)日：2021-04-06
申请号：US16368742
申请日：2019-03-28
申请人： STMICROELECTRONICS (BEIJING) R&D CO. LTD
发明人： Xiao Kang Jiao , PengFei Zhu
IPC分类号： G06F11/00 , G06F11/36 , G06F11/22
摘要： A debug-enabled processing device includes a processor, a communication transceiver circuit, and a debug support unit. The debug support unit has a plurality of dedicated debug registers to facilitate debugging a software program under execution by the processor. One of the plurality of debug registers is a control register having at least four bits, which are used to enable/disable a plurality of debugging operations. Others of the debug registers include a set of index registers that may be configured to pass data to and from the processor.

7. 发明申请

US20190238078A1 DRIVING PERMANENT MAGNET MOTOR BASED ON NEUTRAL POINT VOLTAGE 审中-公开
公开(公告)号：US20190238078A1
公开(公告)日：2019-08-01
申请号：US16259533
申请日：2019-01-28
申请人： STMICROELECTRONICS (BEIJING) R&D CO. LTD
发明人： Rendong Wang
IPC分类号： H02P21/18 , H02K11/33 , H02K11/21 , H02K11/27 , H02K11/26 , H02K1/27 , H02P21/22 , H02P21/32
摘要： The present disclosure is directed to a permanent magnet motor control method and system. A new structure configuration of a permanent magnet motor has a rotor with two or more permanent magnets attached thereon, a stator wound in a “Y” topology with three coils (windings) arranged at 120 degree among one another, and a neutral point of the wound stator wired in a manner that the voltage at the neutral point may be detected in substantially real time. The detected neutral point voltages are analyzed together with the associated vectors of the excitation current provided to the windings of the stator to determine a speed of the rotor. The determined speed of the rotor is used for vector control.

8. 发明申请

US20190113999A1 TOUCH MOTION TRACKING AND REPORTING TECHNIQUE FOR SLOW TOUCH MOVEMENTS 审中-公开
公开(公告)号：US20190113999A1
公开(公告)日：2019-04-18
申请号：US15803054
申请日：2017-11-03
申请人： STMicroelectronics (Beijing) R&D Co. Ltd , STMicroelectronics Asia Pacific Pte Ltd
发明人： Hank Yin , Cam Chung La , Janet Sun
IPC分类号： G06F3/044 , G06F3/041 , G06F3/0488
摘要： A method includes upon sensing a touch to a first location on a touch display, reporting first coordinates of the touch. After sensing movement of the touch along a first path from the first location to a second location more than a tolerance distance away, intermediate coordinates of the touch along the first path that are not more than a cutoff distance away are reported such that there is a first gap between a last reported intermediate coordinate and the second location. After sensing movement of the touch along a second path from the second location to a third location more, second coordinates of the touch are reported, the second reported coordinates of the touch being a point along the first path that is calculated by subtracting the first gap from a distance between the first location and the third location, and then adding a first compensation difference thereto.

9. 发明授权

US09813051B2 Driving circuit for power switch 有权
公开(公告)号：US09813051B2
公开(公告)日：2017-11-07
申请号：US15052170
申请日：2016-02-24
申请人： STMicroelectronics (Beijing) R&D Co. Ltd
发明人： Zhenghao Cui
IPC分类号： H03K17/04 , H03K17/041 , H03K17/16
CPC分类号： H03K17/04106 , H03K17/165
摘要： An electronic circuit is for switching a power transistor having a drain coupled to a drain node, a source coupled to a lower voltage supply, and a gate coupled to a gate node. The electronic circuit includes first current generation circuitry to generate a first current to flow into the gate node in response to assertion off an ON signal, the first current being substantially constant. Second current generation circuitry generates a second current to flow into the gate node in response to deassertion of an OFF signal, the second current being inversely proportional to a gate to source voltage of the power transistor. First comparison circuitry compares a drain voltage at the drain node to a reference voltage, and activates third current generation circuitry to generate a third current to flow into the gate node when the drain voltage is less than the reference voltage.

10. 发明申请

US20140035647A1 APPARATUS AND METHOD FOR ENHANCING STABILITY OF ELECTRONIC DEVICE HAVING A HIGH-ACCURACY CLOCK 审中-公开
标题翻译：具有高精度时钟的电子设备的稳定性的装置和方法
公开(公告)号：US20140035647A1
公开(公告)日：2014-02-06
申请号：US13933622
申请日：2013-07-02
申请人： CHINA ELECTRIC POWER RESEARCH INSTITUTE , STMICROELECTRONICS (BEIJING) R&D CO., LTD.
发明人： Frank YIN , Zongchao MA , Minlin CHEN
IPC分类号： H03K3/013
CPC分类号： H03K3/013
摘要： An embodiment relates to an apparatus and method for enhancing stability of electronic device having a high-accuracy clock. Specifically, there is disclosed a controller for an electronic device, including a control core configured to generate a signal for controlling operation of the electronic device, an internal clock source coupled to the control core and configured to provide a high-speed internal (HSI) clock signal to the control core to act as a drive signal, and at least one timing-sensitive component coupled to an external clock source of the controller and configured to receive a high-speed external (HSE) clock signal generated by an external clock source to act as a drive signal. There is further disclosed a method for driving such kind of controller. According to an embodiment, the high-clock-accuracy requirement and the stability and robustness requirement can be satisfied simultaneously.
摘要翻译：实施例涉及一种用于增强具有高精度时钟的电子设备的稳定性的装置和方法。具体地，公开了一种用于电子设备的控制器，包括被配置为产生用于控制电子设备的操作的信号的控制核心，耦合到控制核心的内部时钟源，并且被配置为提供高速内部（HSI）时钟信号发送到控制核心以用作驱动信号，以及至少一个时序敏感部件，其耦合到控制器的外部时钟源并被配置为接收由外部时钟源产生的高速外部（HSE）时钟信号作为驱动信号。还公开了一种用于驱动这种控制器的方法。根据实施例，可以同时满足高时钟精度要求和稳定性和鲁棒性要求。

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