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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
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。
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公开(公告)号：US20140074436A1
公开(公告)日：2014-03-13
申请号：US14025143
申请日：2013-09-12
Applicant: Microchip Technology Incorporated
Inventor： Andrew Voris , Burke Davison
IPC: G01R27/26
CPC classification number: G01R27/2605 , G06F3/044 , H03K17/955
Abstract: A system for reducing noise in a sensor measurement system includes a noise detector for detecting noise in capacitive to digital conversion measurements; a noise correction module operably coupled to the noise detector and configured to dynamically modify one or more delays associated with a sampling waveform; and a noise filter for filtering the sampling waveform.
Abstract translation: 一种用于降低传感器测量系统噪声的系统，包括用于检测电容式到数字转换测量中的噪声的噪声检测器; 噪声校正模块，其可操作地耦合到所述噪声检测器并且被配置为动态地修改与采样波形相关联的一个或多个延迟; 以及用于滤波采样波形的噪声滤波器。
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3.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。
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4.发明申请公开(公告)号：US20160117014A1
公开(公告)日：2016-04-28
申请号：US14566183
申请日：2014-12-10
Applicant: Microchip Technology Incorporated
Inventor： Burke Davison , Xiang Gao , Yann LeFaou
IPC: G06F3/044
CPC classification number: G06F3/0418 , G06F3/044 , G06F2203/04107 , H03K17/962 , H03K2017/9606 , H03K2017/9613 , H03K2217/94026 , H03K2217/94031 , H03K2217/960705 , H03K2217/960725 , H03K2217/960765 , H03K2217/960775
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.
Abstract translation: 在利用电容式传感器进行触摸判定的方法中，开始电容传感器的自身电容测量，同时进行包括电容式传感器的互电容测量。 可以执行这样的方法，使得自身电容测量和互电容测量与接近或接触电容传感器的未接地导电物体差异地抵消，并且对接近或接触电容传感器的接地物体进行加法组合。
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5.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。
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Patent Agency Ranking
公开(公告)号：US09568526B2
公开(公告)日：2017-02-14
申请号：US14025143
申请日：2013-09-12
Applicant: Microchip Technology Incorporated
Inventor： Andrew Voris , Burke Davison
IPC: G01R27/26 , G06F3/044 , H03K17/955
CPC classification number: G01R27/2605 , G06F3/044 , H03K17/955
Abstract: A system for reducing noise in a sensor measurement system includes a noise detector for detecting noise in capacitive to digital conversion measurements; a noise correction module operably coupled to the noise detector and configured to dynamically modify one or more delays associated with a sampling waveform; and a noise filter for filtering the sampling waveform.
Abstract translation: 一种用于降低传感器测量系统噪声的系统，包括用于检测电容式到数字转换测量中的噪声的噪声检测器; 噪声校正模块，其可操作地耦合到所述噪声检测器并且被配置为动态地修改与采样波形相关联的一个或多个延迟; 以及用于滤波采样波形的噪声滤波器。
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7.发明授权公开(公告)号：US09542051B2
公开(公告)日：2017-01-10
申请号：US14566183
申请日：2014-12-10
Applicant: Microchip Technology Incorporated
Inventor： Burke Davison , Xiang Gao , Yann LeFaou
CPC classification number: G06F3/0418 , G06F3/044 , G06F2203/04107 , H03K17/962 , H03K2017/9606 , H03K2017/9613 , H03K2217/94026 , H03K2217/94031 , H03K2217/960705 , H03K2217/960725 , H03K2217/960765 , H03K2217/960775
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.
Abstract translation: 在利用电容式传感器进行触摸判定的方法中，开始电容传感器的自身电容测量，同时进行包括电容式传感器的互电容测量。 可以执行这样的方法，使得自身电容测量和互电容测量与接近或接触电容传感器的未接地导电物体差异地抵消，并且对接近或接触电容传感器的接地物体进行加法组合。
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8.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
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。
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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
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。
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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
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.
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