中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.014 seconds)

    Measuring Capacitance of a Capacitive Sensor with a Microcontroller Having an Analog Output for Driving a Guard Ring
    1.
    发明申请
    Measuring Capacitance of a Capacitive Sensor with a Microcontroller Having an Analog Output for Driving a Guard Ring 有权
    用具有用于驱动防护环的模拟输出的微控制器测量电容式传感器的电容

    公开(公告)号：US20130090873A1

    公开(公告)日：2013-04-11

    申请号：US13633429

    申请日：2012-10-02

    Applicant: MICROCHIP TECHNOLOGY INCORPORATED

    Inventor： Zeke Lundstrum ,  Keith Curtis ,  Burke Davison ,  Sean Steedman ,  Yann LeFaou

    IPC: G06F19/00 ,  H03M1/12 ,  G06F1/26

    CPC classification number: H03K17/962 ,  H03K17/9622 ,  H03K2217/960705 ,  H03K2217/960765

    Abstract: A microcontroller measures capacitance of capacitive sensors having guard rings associated therewith. A guard ring is provided around each capacitive sensor plate and is charged to substantially the same voltage as a voltage on the associated capacitive sensor plate. The guard ring reduces parasitic capacitances of the capacitive sensor plate caused by differences in voltage potentials between the capacitive sensor plate, and adjacent circuit conductors, ground planes and power planes. An analog output is buffered and coupled to an analog input coupled to the capacitive sensor plate, and is used to drive the guard ring voltage to substantially the same voltage as the voltage on the capacitive sensor plate.

    Abstract translation: 微控制器测量具有与其相关联的保护环的电容传感器的电容。 在每个电容传感器板周围设置保护环，并将其与相关联的电容式传感器板上的电压基本相同的电压充电。 保护环降低由电容式传感器板和相邻的电路导体，接地层和电源平面之间的电位差的差异引起的电容传感器板的寄生电容。 模拟输出被缓冲并耦合到耦合到电容传感器板的模拟输入，并用于将保护环电压驱动到与电容传感器板上的电压基本相同的电压。

    Measuring capacitance of a capacitive sensor with a microcontroller having an analog output for driving a guard ring
    2.
    发明授权
    Measuring capacitance of a capacitive sensor with a microcontroller having an analog output for driving a guard ring 有权
    用具有用于驱动保护环的模拟输出的微控制器测量电容式传感器的电容

    公开(公告)号：US09467141B2

    公开(公告)日：2016-10-11

    申请号：US13633429

    申请日：2012-10-02

    Applicant: Microchip Technology Incorporated

    Inventor： Zeke Lundstrum ,  Keith Curtis ,  Burke Davison ,  Sean Steedman ,  Yann LeFaou

    IPC: H03K17/96

    CPC classification number: H03K17/962 ,  H03K17/9622 ,  H03K2217/960705 ,  H03K2217/960765

    Abstract: A microcontroller measures capacitance of capacitive sensors having guard rings associated therewith. A guard ring is provided around each capacitive sensor plate and is charged to substantially the same voltage as a voltage on the associated capacitive sensor plate. The guard ring reduces parasitic capacitances of the capacitive sensor plate caused by differences in voltage potentials between the capacitive sensor plate, and adjacent circuit conductors, ground planes and power planes. An analog output is buffered and coupled to an analog input coupled to the capacitive sensor plate, and is used to drive the guard ring voltage to substantially the same voltage as the voltage on the capacitive sensor plate.

    Abstract translation: 微控制器测量具有与其相关联的保护环的电容传感器的电容。 在每个电容传感器板周围设置保护环，并将其与相关联的电容式传感器板上的电压基本相同的电压充电。 保护环降低由电容式传感器板和相邻的电路导体，接地层和电源平面之间的电位差的差异引起的电容传感器板的寄生电容。 模拟输出被缓冲并耦合到耦合到电容传感器板的模拟输入，并用于将保护环电压驱动到与电容传感器板上的电压基本相同的电压。

    Measuring Capacitance of a Capacitive Sensor with a Microcontroller Having Digital Outputs for Driving a Guard Ring
    4.
    发明申请
    Measuring Capacitance of a Capacitive Sensor with a Microcontroller Having Digital Outputs for Driving a Guard Ring 有权
    用具有用于驱动保护环的数字输出的微控制器测量电容式传感器的电容

    公开(公告)号：US20130088372A1

    公开(公告)日：2013-04-11

    申请号：US13633523

    申请日：2012-10-02

    Applicant: Microchip Technology Incorporated

    Inventor： Zeke Lundstrum ,  Keith Curtis ,  Burke Davison ,  Sean Steedman ,  Yann LeFaou

    IPC: H03K17/955 ,  H03M1/00 ,  H03M1/12

    CPC classification number: H03K17/9622 ,  H03K2217/960725 ,  H03K2217/960765 ,  H03K2217/96077

    Abstract: A guard ring is provided around each capacitive sensor plate and charged to substantially the same voltage as a voltage on the capacitive sensor plate. The guard ring reduces parasitic capacitances of the capacitive sensor plate caused by differences in voltage potentials between the capacitive sensor plate, and adjacent circuit conductors, ground planes and power planes. Two digital outputs and associated voltage divider resistors are used to drive the guard ring voltage to substantially the same voltage as the voltage on the capacitive sensor plate.

    Abstract translation: 在每个电容传感器板周围设置保护环，并将其充电到与电容式传感器板上的电压基本相同的电压。 保护环降低由电容式传感器板和相邻的电路导体，接地层和电源平面之间的电位差的差异引起的电容传感器板的寄生电容。 两个数字输出和相关的分压电阻用于将保护环电压驱动到与电容传感器板上的电压基本相同的电压。

    Measuring capacitance of a capacitive sensor with a microcontroller having digital outputs for driving a guard ring
    6.
    发明授权
    Measuring capacitance of a capacitive sensor with a microcontroller having digital outputs for driving a guard ring 有权
    使用具有用于驱动保护环的数字输出的微控制器测量电容式传感器的电容

    公开(公告)号：US09257980B2

    公开(公告)日：2016-02-09

    申请号：US13633523

    申请日：2012-10-02

    Applicant: Microchip Technology Incorporated

    Inventor： Zeke Lundstrum ,  Keith Curtis ,  Burke Davison ,  Sean Steedman ,  Yann LeFaou

    IPC: G06F3/041 ,  H03K17/96

    CPC classification number: H03K17/9622 ,  H03K2217/960725 ,  H03K2217/960765 ,  H03K2217/96077

    Abstract: A guard ring is provided around each capacitive sensor plate and charged to substantially the same voltage as a voltage on the capacitive sensor plate. The guard ring reduces parasitic capacitances of the capacitive sensor plate caused by differences in voltage potentials between the capacitive sensor plate, and adjacent circuit conductors, ground planes and power planes. Two digital outputs and associated voltage divider resistors are used to drive the guard ring voltage to substantially the same voltage as the voltage on the capacitive sensor plate.

    Abstract translation: 在每个电容传感器板周围设置保护环，并将其充电到与电容式传感器板上的电压基本相同的电压。 保护环降低由电容式传感器板和相邻的电路导体，接地层和电源平面之间的电位差的差异引起的电容传感器板的寄生电容。 两个数字输出和相关的分压电阻用于将保护环电压驱动到与电容传感器板上的电压基本相同的电压。

    Microcontroller with optimized ADC controller
    7.
    发明授权
    Microcontroller with optimized ADC controller 有权
    具有优化ADC控制器的微控制器

    公开(公告)号：US09252769B2

    公开(公告)日：2016-02-02

    申请号：US13633616

    申请日：2012-10-02

    Applicant: Microchip Technology Incorporated

    Inventor： Zeke Lundstrum ,  Keith Curtis ,  Burke Davison ,  Sean Steedman ,  Yann LeFaou

    IPC: H03M1/00 ,  H03K17/96

    CPC classification number: H03K17/9622 ,  H03K2217/960705 ,  H03K2217/960725 ,  H03K2217/960765

    Abstract: An analog-to-digital (ADC) controller is used in combination with a digital processor of a microcontroller to control the operation of capacitance measurements using the capacitive voltage division (CVD) method. The ADC controller handles the CVD measurement process instead of the digital processor having to run additional program steps for controlling charging and discharging of a capacitive touch sensor and sample and hold capacitor, then coupling these two capacitors together, and measuring the resulting voltage charge thereon in determining the capacitance thereof. The ADC controller may be programmable and its programmable parameters stored in registers.

    Abstract translation: 模拟数字（ADC）控制器与微控制器的数字处理器组合使用，以使用电容分压（CVD）方法控制电容测量的操作。 ADC控制器处理CVD测量过程，而不是数字处理器必须运行额外的程序步骤，用于控制电容式触摸传感器和采样和保持电容器的充电和放电，然后将这两个电容器耦合在一起，并测量其上产生的电压电荷 确定其电容。 ADC控制器可以是可编程的，其可编程参数存储在寄存器中。

    Capacitive/inductive proximity detection for Wi-Fi protection
    8.
    发明授权
    Capacitive/inductive proximity detection for Wi-Fi protection 有权
    用于Wi-Fi保护的电容/电感式接近检测

    公开(公告)号：US09144041B2

    公开(公告)日：2015-09-22

    申请号：US13693635

    申请日：2012-12-04

    Applicant: Microchip Technology Incorporated

    Inventor： Keith Edwin Curtis ,  Yann LeFaou ,  Fanie Duvenhage

    IPC: H04W52/52 ,  H04B1/3827 ,  H04W52/28

    CPC classification number: H04W52/52 ,  H04B1/3838 ,  H04W52/283

    Abstract: A combination of capacitive, mutual capacitive, and inductive proximity and touch sensing is used to detect the presence and nature of nearby objects to a wireless device. When the proximity of metal or a user is sensed the output power of a Wi-Fi module in the device is reduced so as to prevent harm to the user and/or the Wi-Fi transmitter amplifier circuits. Inductive sensors located at the four corners of the wireless device are used to detect metal, and capacitive sensors are used to detect a capacitance change or shift due to the presence of a user's hand, body or metal. In addition, the capacitive sensors may be located at the four corners of the device and can measure changes in the mutual capacitance coupling between these capacitive sensors.

    Abstract translation: 使用电容式，互电容式和电感式接近式和触摸感测的组合来检测附近对象到无线设备的存在和性质。 当感测到金属或用户的接近度时，设备中的Wi-Fi模块的输出功率被降低，以防止对用户和/或Wi-Fi发射机放大器电路的危害。 位于无线设备四角的感应传感器用于检测金属，电容传感器用于检测由于用户的手，身体或金属的存在而导致的电容变化或偏移。 此外，电容传感器可以位于器件的四个角，并且可以测量这些电容式传感器之间的互电容耦合的变化。

    Analog elimination of ungrounded conductive objects in capacitive sensing
    9.
    发明授权
    Analog elimination of ungrounded conductive objects in capacitive sensing 有权

    公开(公告)号：US10191591B2

    公开(公告)日：2019-01-29

    申请号：US15401593

    申请日：2017-01-09

    Applicant: Microchip Technology Incorporated

    Inventor： Burke Davison ,  Xiang Gao ,  Yann LeFaou

    IPC: G06F3/041 ,  H03K17/96 ,  G06F3/044

    Abstract: In a method for performing a touch determination with a capacitive sensor, a self capacitance measurement of a capacitive sensor is initiated, wherein at the same time a mutual capacitance measurement including the capacitive sensor is performed. Such a method can be performed such that the self capacitance measurement and the mutual capacitance measurement differentially cancel with ungrounded conductive objects approaching or touching the capacitive sensor and additively combine for grounded objects approaching or touching the capacitive sensor.

Patent Agency Ranking