Capacitance scanning proximity detection
    5.
    发明授权
    Capacitance scanning proximity detection 有权
    电容扫描接近检测

    公开(公告)号:US09019226B2

    公开(公告)日:2015-04-28

    申请号:US14044387

    申请日:2013-10-02

    IPC分类号: G06F3/041 G06F3/044

    摘要: A method and apparatus for scanning a first set of electrodes of a capacitive sense array using a first sensing mode to identify a presence of an object in proximity to the capacitive sense array, where scanning using the first sensing mode identifies objects not in physical contact with the capacitive sense array. The first set of electrodes is scanned using a second sensing mode to determine a location of the object in relation to the capacitive sense array, where rescanning using the second sensing mode determines locations of objects in physical contact with the capacitive sense array.

    摘要翻译: 一种用于使用第一感测模式扫描电容性感测阵列的第一组电极的方法和装置,以识别接近电容性感测阵列的物体的存在,其中使用第一感测模式的扫描识别不与物理接触的物体 电容式感应阵列。 使用第二感测模式扫描第一组电极,以确定对象相对于电容性感测阵列的位置,其中使用第二感测模式的重新扫描确定物体与电容性感测阵列物理接触的位置。

    NOISE SUPPRESSION AND/OR REDUCTION CIRCUITS AND METHODS FOR CAPACITANCE SENSING SYSTEMS
    6.
    发明申请
    NOISE SUPPRESSION AND/OR REDUCTION CIRCUITS AND METHODS FOR CAPACITANCE SENSING SYSTEMS 有权
    噪声抑制和/或还原电路及电容传感系统的方法

    公开(公告)号:US20120049869A1

    公开(公告)日:2012-03-01

    申请号:US13216556

    申请日:2011-08-24

    IPC分类号: G01R27/26

    摘要: A capacitance sensing system can include a noise detector coupled to a capacitance sensing network that generates a noise detect signal in response to noise; a delay circuit coupled to generate at least two different delayed sense signals in response to outputs from the capacitance sensing network; and a switch circuit that selectively outputs one of the delayed sense signals in response to the noise detect signal. Particular embodiments can include selectively discarding discrete analog samples of a capacitance signal when noise is detected in such a sample.

    摘要翻译: 电容感测系统可以包括耦合到电容感测网络的噪声检测器,其产生响应于噪声的噪声检测信号; 延迟电路,其被耦合以响应于来自所述电容感测网络的输出而产生至少两个不同的延迟感测信号; 以及响应于噪声检测信号选择性地输出延迟检测信号中的一个的开关电路。 当在这样的样本中检测到噪声时,特定实施例可以包括选择性地丢弃电容信号的离散模拟样本。

    Mutual Capacitance Sensing Circuits, Methods and Systems
    7.
    发明申请
    Mutual Capacitance Sensing Circuits, Methods and Systems 有权
    互电容传感电路,方法与系统

    公开(公告)号:US20120043977A1

    公开(公告)日:2012-02-23

    申请号:US13191708

    申请日:2011-07-27

    IPC分类号: G01R27/26

    摘要: A capacitance sensing system may include a first selection circuit that couples N electrodes of a first electrode set to a capacitance sense circuit; and a second selection circuit that couples M electrodes of a second electrode set, substantially simultaneously, to a signal generator circuit as a group to induce current in the N electrodes by mutual capacitance between the M and N electrodes; wherein N is at least one, and M>N.

    摘要翻译: 电容感测系统可以包括将第一电极组的N个电极耦合到电容检测电路的第一选择电路; 以及第二选择电路,其将第二电极组的M个电极基本同时耦合到作为组的信号发生器电路,以通过M和N个电极之间的相互电容来感应N个电极中的电流; 其中N是至少一个,M> N。

    Mutual capacitance sensing circuits, methods and systems
    8.
    发明授权
    Mutual capacitance sensing circuits, methods and systems 有权
    互电容感测电路,方法和系统

    公开(公告)号:US09013195B2

    公开(公告)日:2015-04-21

    申请号:US13191708

    申请日:2011-07-27

    摘要: A capacitance sensing system may include a first selection circuit that couples N electrodes of a first electrode set to a capacitance sense circuit; and a second selection circuit that couples M electrodes of a second electrode set, substantially simultaneously, to a signal generator circuit as a group to induce current in the N electrodes by mutual capacitance between the M and N electrodes; wherein N is at least one, and M>N.

    摘要翻译: 电容感测系统可以包括将第一电极组的N个电极耦合到电容检测电路的第一选择电路; 以及第二选择电路,其将第二电极组的M个电极基本同时耦合到作为组的信号发生器电路,以通过M和N个电极之间的相互电容来感应N个电极中的电流; 其中N是至少一个,M> N。

    AC line synchronization for capacitive sensing
    9.
    发明授权
    AC line synchronization for capacitive sensing 有权
    交流线路同步用于电容式感测

    公开(公告)号:US08576189B1

    公开(公告)日:2013-11-05

    申请号:US12983245

    申请日:2010-12-31

    IPC分类号: G06F3/041 G06F3/038 G06F3/044

    CPC分类号: G06F3/044 G06F3/0416

    摘要: A method includes powering multiple touch sensors using DC power derived from an AC power signal; monitoring the AC power signal and producing from the AC power signal a trigger signal that occurs repeatedly at a predetermined point in a cycle of the AC power signal; and initiating a scan of the touch sensors when the trigger signal occurs during each cycle of the AC power signal.

    摘要翻译: 一种方法包括使用从AC功率信号得到的DC功率为多个触摸传感器供电; 监视交流电源信号,并从交流电源信号产生在交流电源信号的周期中在预定点重复出现的触发信号; 并且当在AC功率信号的每个周期期间发生触发信号时,启动触摸传感器的扫描。