中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

39 records (took 0.016 seconds)

    CAPACITIVE TOUCH SCREEN WITH TIME OVERLAPPED CONCURRENT SCANNING OPERATION USING CODED DRIVE SIGNALS
    11.
    发明申请
    CAPACITIVE TOUCH SCREEN WITH TIME OVERLAPPED CONCURRENT SCANNING OPERATION USING CODED DRIVE SIGNALS 审中-公开
    使用编码驱动信号的时间叠加同时扫描操作的电容触摸屏

    公开(公告)号：US20160313823A1

    公开(公告)日：2016-10-27

    申请号：US14693211

    申请日：2015-04-22

    Applicant: STMicroelectronics Asia Pacific Pte Ltd

    Inventor： Kien Beng Tan

    IPC: G06F3/044

    CPC classification number: G06F3/044 ,  G06F3/0416

    Abstract: A capacitive sensing system includes a capacitive sensing panel with drive lines and sense lines. Each drive line includes a drive circuit. A code generator operates to generate modulation codes. A drive controller generates drive signals wherein each drive signal is modulated by one of the modulation codes. The generated drive signals are applied to the drive lines through the drive circuits. The drive controller operates to simultaneously generate the drive signals for application to a corresponding group of drive lines during a drive period. Separate groups of drive lines are sequentially driven with the same drive signals during drive periods that only partially overlap.

    Abstract translation: 电容感测系统包括具有驱动线和感测线的电容式感测面板。 每个驱动线包括驱动电路。 码发生器用于产生调制码。 驱动器控制器产生驱动信号，其中每个驱动信号由调制码之一调制。 所产生的驱动信号通过驱动电路施加到驱动线。 驱动控制器操作以在驱动周期期间同时产生用于施加到相应组的驱动线的驱动信号。 在仅部分重叠的驱动周期期间，用相同的驱动信号依次驱动单独的驱动线组。

    TEMPERATURE INSENSITIVE TRANSIENT CURRENT SOURCE
    12.
    发明申请
    TEMPERATURE INSENSITIVE TRANSIENT CURRENT SOURCE 有权
    温度敏感瞬态电流源

    公开(公告)号：US20150253799A1

    公开(公告)日：2015-09-10

    申请号：US14201590

    申请日：2014-03-07

    Applicant: STMicroelectronics Asia Pacific Pte. Ltd.

    Inventor： CheeWeng Cheong ,  Kien Beng Tan ,  Dianbo Guo

    IPC: G05F3/16

    CPC classification number: G05F3/16 ,  G05F3/262

    Abstract: A current source includes a first current path including a first current mirror transistor and an input current source coupled in series, a second current path including a second current minor transistor, wherein control terminals of the first and second current minor transistors are connected, a first circuit configured to provide a controlled auxiliary current in the second current path, and a second circuit configured to provide a controlled output current in the second current path when or after the auxiliary current has reached steady state. The current source may include one or more cascode transistors in the first current path and one or more cascode transistors in the second current path. The first circuit may be activated before the second circuit is activated.

    Abstract translation: 电流源包括包括串联耦合的第一电流镜晶体管和输入电流源的第一电流路径，包括第二电流次级晶体管的第二电流路径，其中连接第一和第二电流次级晶体管的控制端，第一 电路，被配置为在第二电流路径中提供受控的辅助电流;以及第二电路，被配置为在辅助电流达到稳定状态时或之后提供第二电流路径中的受控输出电流。 电流源可以包括第一电流路径中的一个或多个共源共栅晶体管和第二电流路径中的一个或多个共源共栅晶体管。 第一电路可以在第二电路被激活之前被激活。

    CONFIGURABLE ANALOG FRONT-END FOR MUTUAL CAPACITANCE SENSING AND SELF CAPACITANCE SENSING
    13.
    发明申请
    CONFIGURABLE ANALOG FRONT-END FOR MUTUAL CAPACITANCE SENSING AND SELF CAPACITANCE SENSING 有权
    可配置模拟前端用于电容传感和自检电感

    公开(公告)号：US20140312919A1

    公开(公告)日：2014-10-23

    申请号：US14322244

    申请日：2014-07-02

    Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD ,  STMICROELECTRONICS S.R.L.

    Inventor： Kien Beng Tan ,  Ernesto Lasalandra ,  Tommaso Ungaretti ,  Yannick Guedon ,  Dianbo Guo ,  Paolo Angelini ,  Giovanni Carlo Tripoli

    IPC: G01R27/26 ,  G06F3/044

    CPC classification number: G01R27/2605 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04104

    Abstract: Capacitance sensing circuits and methods are provided. A dual mode capacitance sensing circuit includes a capacitance-to-voltage converter having an amplifier and an integration capacitance coupled between an output and an inverting input of the amplifier, and a switching circuit responsive to mutual mode control signals for a controlling signal supplied from a capacitive touch matrix to the capacitive to voltage converter in a mutual capacitance sensing mode and responsive to self mode control signals for controlling signals supplied from the capacitive touch matrix to the capacitance-to-voltage converter in a self capacitance sensing mode, wherein the capacitance sensing circuit is configurable for operation in the mutual capacitance sensing mode or the self capacitance sensing mode.

    Abstract translation: 提供电容感测电路和方法。 双模电容感测电路包括具有放大器和耦合在放大器的输出和反相输入端之间的积分电容的电容 - 电压转换器，以及响应于从模拟信号提供的控制信号的相互模式控制信号的开关电路 电容式触摸矩阵到互电容感测模式中的电容到电压转换器，并且响应于用于在自电容感测模式中控制从电容式触摸矩阵提供给电容 - 电压转换器的信号的自模式控制信号，其中电容感测 电路可配置为在互电容感测模式或自身电容感测模式下工作。

    Correlated data acquisition among different touch sensors
    15.
    发明授权
    Correlated data acquisition among different touch sensors 有权

    公开(公告)号：US10025440B2

    公开(公告)日：2018-07-17

    申请号：US15208894

    申请日：2016-07-13

    Applicant: STMicroelectronics Asia Pacific Pte Ltd

    Inventor： Kien Beng Tan

    IPC: G06F3/045 ,  G06F3/044 ,  G06F3/041

    Abstract: Disclosed herein is an electronic device including a first touch circuit to be coupled to a first touch sensing unit, the first touch sensing unit having first drive lines and first sense lines intersecting the first drive lines. A second touch circuit is to be coupled to a second touch sensing unit, the second touch sensing unit having second drive lines and second sense lines intersecting the second drive lines. A touch force circuit is to be coupled to a touch force sensing unit, the touch force sensing unit having third drive lines and third sense lines intersecting the third drive lines. The first touch circuit, second touch circuit, and touch force circuit are configured to drive the first, second, and third drive lines as a function of a synchronization signal, and acquire data from the first, second, and third sense lines as a function of the synchronization signal.

    Touch screen with palm rejection in the presence of charger noise
    16.
    发明授权
    Touch screen with palm rejection in the presence of charger noise 有权

    公开(公告)号：US09710104B2

    公开(公告)日：2017-07-18

    申请号：US14245915

    申请日：2014-04-04

    Applicant: STMicroelectronics Asia Pacific Pte. Ltd.

    Inventor： CheeWeng Cheong ,  Leonard Dinu ,  Dianbo Guo ,  Kien Beng Tan

    IPC: G06F3/041

    CPC classification number: G06F3/0418

    Abstract: A touch screen device having a touch screen panel and a method for operating a touch screen device are provided. The method includes monitoring, during a noise monitoring phase, channel signals of a first set of channels and a second set of channel of the touch screen panel, detecting a stylus signal in response to a channel signal greater than a stylus threshold and less than a palm threshold, selecting the first set of channels when the stylus signal is detected on at least one channel of the first set of channels and is not detected on the second set of channels, and selecting the second set of channels when the stylus signal is detected on at least one channel of the second set of channels and is not detected on the first set of channels.

    VOLTAGE REGULATOR CIRCUIT
    17.
    发明申请
    VOLTAGE REGULATOR CIRCUIT 审中-公开
    电压调节器电路

    公开(公告)号：US20140117950A1

    公开(公告)日：2014-05-01

    申请号：US13662612

    申请日：2012-10-29

    Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD

    Inventor： Eng Jye Ng ,  Kien Beng Tan

    IPC: G05F1/10

    CPC classification number: G05F1/575

    Abstract: A voltage regulator circuit includes a differential amplifier stage. The gate terminal of a first n-channel MOSFET is coupled to an output of the differential amplifier stage. A resistor is coupled between the drain terminal and gate terminal of the first n-channel MOSFET. The drain terminal of the first n-channel MOSFET drives the gate of a second n-channel MOSFET whose drain terminal is at the input of a current mirror circuit. An output of the current mirror circuit forms the regulated voltage output. A feedback circuit is coupled between the regulated voltage output and one input of the voltage regulator circuit. Another input of the voltage regulator circuit is configured to receive a reference voltage.

    Abstract translation: 电压调节器电路包括差分放大器级。 第一n沟道MOSFET的栅极端子耦合到差分放大器级的输出端。 电阻器耦合在第一n沟道MOSFET的漏极端子和栅极端子之间。 第一n沟道MOSFET的漏极端子驱动漏极端子处于电流镜电路的输入端的第二n沟道MOSFET的栅极。 电流镜电路的输出形成稳压电压输出。 反馈电路耦合在稳压电压输出和稳压电路的一个输入端之间。 电压调节器电路的另一输入被配置为接收参考电压。

    Methods and techniques for correcting pressure sensor data in the presence of abnormal pressure sensor readings
    18.
    发明授权
    Methods and techniques for correcting pressure sensor data in the presence of abnormal pressure sensor readings 有权

    公开(公告)号：US10725574B2

    公开(公告)日：2020-07-28

    申请号：US16220500

    申请日：2018-12-14

    Applicant: STMicroelectronics Asia Pacific Pte Ltd

    Inventor： Cam Chung La ,  Kien Beng Tan

    IPC: G06F3/041 ,  H03K17/96

    Abstract: A device includes a touch and pressure sensitive screen having touch pressure sensors and a controller. The controller acquires touch pressure data from the plurality of touch pressure sensors. For each touch pressure sensor, the controller determines whether the touch pressure data from that touch pressure sensor is indicative of abnormal operation of that touch pressure sensor. Where no abnormal operation is indicated, the controller sums the touch pressure data from each of the touch pressure sensors to produce a touch pressure output. Where abnormal operation is indicated, the controller sums the touch pressure data from each of the touch pressure sensors and multiply the sum by a correction factor to produce the touch pressure output.

    Capacitive discharge circuit for touch sensitive screen
    19.
    发明授权
    Capacitive discharge circuit for touch sensitive screen 有权

    公开(公告)号：US10534489B2

    公开(公告)日：2020-01-14

    申请号：US15838675

    申请日：2017-12-12

    Applicant: STMicroelectronics Asia Pacific Pte Ltd

    Inventor： Chee Weng Cheong ,  Dianbo Guo ,  Kien Beng Tan ,  Yannick Guedon

    IPC: G06F3/044 ,  G06F3/041

    Abstract: A capacitive discharge circuit includes a line having a capacitance, a switched capacitor circuit including a capacitor, a switched circuit coupled to the line, and a voltage regulator coupled between the switched capacitor circuit and the switched circuit. A controller operates the switched capacitor circuit and switched circuit to in a first phase, charge the capacitor by coupling the capacitor between a common mode and a power supply, and in a second phase, discharge the capacitor by coupling the voltage regulator in series with the capacitor between the power supply node a ground. The controller is also configured to in a third phase, charge the capacitor by coupling the capacitor between the common mode and the power supply, and in a fourth phase, share charge between the line and the capacitor by coupling the voltage regulator and the capacitor in series between the line and the ground.

Patent Agency Ranking