Front-end signal detector and method for improving noise immunity of a capacitive touch sensor
    1.
    发明授权
    Front-end signal detector and method for improving noise immunity of a capacitive touch sensor 有权
    前端信号检测器和用于提高电容式触摸传感器的抗噪声性的方法

    公开(公告)号:US08487907B2

    公开(公告)日:2013-07-16

    申请号:US12850836

    申请日:2010-08-05

    IPC分类号: G06F3/0412

    CPC分类号: G06F3/044 G06F3/0416

    摘要: A front-end signal detector and a method for improving noise immunity of a capacitive touch sensor start counting a preset time to trigger an interrupt signal responsive to a positive or negative edge of a periodic noise, to break the path through which a demodulated signal comes into a low-pass filter, to prevent noise from accumulating in the low-pass filter, and consequently mitigate the influence of the noise on the detection signal generated by the front-end signal detector.

    摘要翻译: 前端信号检测器和用于提高电容式触摸传感器的抗噪声性的方法开始计数预设时间以响应于周期性噪声的正或负边缘触发中断信号,以断开解调信号到达的路径 进入低通滤波器,以防止噪声积聚在低通滤波器中,从而减轻噪声对由前端信号检测器产生的检测信号的影响。

    FRONT-END SIGNAL DETECTOR AND METHOD FOR IMPROVING NOISE IMMUNITY OF A CAPACITIVE TOUCH SENSOR
    2.
    发明申请
    FRONT-END SIGNAL DETECTOR AND METHOD FOR IMPROVING NOISE IMMUNITY OF A CAPACITIVE TOUCH SENSOR 有权
    前端信号检测器和改善电容式触摸传感器噪声的方法

    公开(公告)号:US20110037723A1

    公开(公告)日:2011-02-17

    申请号:US12850836

    申请日:2010-08-05

    IPC分类号: G06F3/045

    CPC分类号: G06F3/044 G06F3/0416

    摘要: A front-end signal detector and a method for improving noise immunity of a capacitive touch sensor start counting a preset time to trigger an interrupt signal responsive to a positive or negative edge of a periodic noise, to break the path through which a demodulated signal comes into a low-pass filter, to prevent noise from accumulating in the low-pass filter, and consequently mitigate the influence of the noise on the detection signal generated by the front-end signal detector.

    摘要翻译: 前端信号检测器和用于提高电容式触摸传感器的抗噪声性的方法开始计数预设时间以响应于周期性噪声的正或负边缘触发中断信号,以断开解调信号到达的路径 进入低通滤波器,以防止噪声积聚在低通滤波器中,从而减轻噪声对由前端信号检测器产生的检测信号的影响。

    Sensing circuit and method for a capacitive touch panel
    3.
    发明授权
    Sensing circuit and method for a capacitive touch panel 有权
    电容式触摸屏的感应电路和方法

    公开(公告)号:US08593429B2

    公开(公告)日:2013-11-26

    申请号:US12652260

    申请日:2010-01-05

    IPC分类号: G06F3/045

    CPC分类号: G06F3/044 H03K17/9622

    摘要: A sensing method and circuit for a capacitive touch panel sense the capacitance variation of a lateral capacitor formed at the intersection of two traces of the capacitive touch panel, to distinguish a real point from a ghost point. A sensing cycle includes two non-overlapping clock phases. In the first clock phase, the voltages across the lateral capacitor and across a sensing capacitor are set. In the second clock phase, the voltage at a first terminal of the lateral capacitor is changed, and a second terminal of the lateral capacitor is connected to a first terminal of the sensing capacitor, causing a voltage variation at a second terminal of the sensing capacitor. This voltage variation is used to determine whether the intersection is touched. The sensing method and circuit reflect the status of the lateral capacitor in real-time and prevent the location of the touch point from being misjudged.

    摘要翻译: 用于电容式触摸屏的感测方法和电路检测形成在电容式触摸面板的两个迹线的交点处形成的横向电容器的电容变化,以将真实点与虚像点区分开。 感测周期包括两个不重叠的时钟相位。 在第一个时钟相位中,设置横向电容器两端的感测电容器两端的电压。 在第二时钟相位中,横向电容器的第一端子处的电压改变,并且横向电容器的第二端子连接到感测电容器的第一端子,导致感测电容器的第二端子处的电压变化 。 该电压变化用于确定交点是否被触摸。 感测方式和电路实时反映横向电容器的状态,防止接触点的位置误判。

    Touch position detector of capacitive touch panel and method for detecting the touch position
    5.
    发明授权
    Touch position detector of capacitive touch panel and method for detecting the touch position 有权
    电容触摸面板的触摸位置检测器和触摸位置检测方法

    公开(公告)号:US08232972B2

    公开(公告)日:2012-07-31

    申请号:US11971788

    申请日:2008-01-09

    IPC分类号: G06F3/041

    CPC分类号: G06F3/044

    摘要: A touch position detector includes a plurality of capacitance sensors, a negative capacitance compensation unit, an analog/digital converter and a micro processing unit. The negative capacitance compensation unit is utilized to compensate the capacitance of the capacitance sensor and get a capacitance change. The micro controller unit is utilized to detect the touch position according to the capacitance change. It is easy to get the touch position by using the touch position detector.

    摘要翻译: 触摸位置检测器包括多个电容传感器,负电容补偿单元,模拟/数字转换器和微处理单元。 负电容补偿单元用于补偿电容传感器的电容并获得电容变化。 微控制器单元用于根据电容变化来检测触摸位置。 使用触摸位置检测器很容易得到触摸位置。

    Control circuit and control method for capacitive touch panel
    6.
    发明申请
    Control circuit and control method for capacitive touch panel 有权
    电容触摸屏的控制电路和控制方法

    公开(公告)号:US20100110037A1

    公开(公告)日:2010-05-06

    申请号:US12379573

    申请日:2009-02-25

    IPC分类号: G06F3/045

    CPC分类号: G06F3/044

    摘要: A control circuit and a control method for a capacitive touch panel are provided. Therein, while a scanning signal charges and discharges each trace on the capacitive touch panel, a signal in phase with the scanning signal is provided to traces adjacent to the scanned trace or a ground layer under the scanned trace so as to lower parasitic capacitances between the scanned trace and the ground layer or other traces, thereby decreasing a base capacitance of the capacitive touch panel and enhancing a sensing result of the control circuit as well as providing a shielding effect and reducing noise interference so that the capacitive touch panel has improved performance.

    摘要翻译: 提供了一种用于电容式触摸面板的控制电路和控制方法。 其中,当扫描信号对电容式触摸面板上的每个迹线进行充电和放电时,将与扫描信号同相的信号提供给扫描迹线附近的迹线或扫描迹线下方的接地层,以便降低扫描信号之间的寄生电容 扫描轨迹和接地层或其他迹线,从而降低电容式触摸面板的基极电容并增强控制电路的感测结果,以及提供屏蔽效果并降低噪声干扰,使得电容式触摸面板具有改进的性能。

    Equalized capacitive touchpad and touch positioning mehtod
    7.
    发明申请
    Equalized capacitive touchpad and touch positioning mehtod 有权
    均衡电容触摸板和触摸定位

    公开(公告)号:US20090244029A1

    公开(公告)日:2009-10-01

    申请号:US12382764

    申请日:2009-03-24

    IPC分类号: G06F3/045 G06F3/044

    CPC分类号: G06F3/044 G06F3/0418

    摘要: An equalized capacitive touchpad and a touch positioning method for a capacitive touchpad use an equalizer to correct a sensed value detected from a sensing line of the capacitive touchpad, to thereby offset the attenuation of the sensed value due to the impedance of the sensing line. Thus, the sensed values generated from different positions along a sensing line are equalized, and the touch positioning accuracy of the capacitive touchpad is improved.

    摘要翻译: 用于电容式触摸板的均衡电容式触摸板和触摸定位方法使用均衡器来校正从电容式触摸板的感测线检测到的感测值,从而抵消由感测线的阻抗引起的感测值的衰减。 因此,沿着感测线的不同位置产生的感测值被均衡,电容式触摸板的触摸定位精度提高。

    Touch Position Detector of Capacitive Touch Panel and Method for Detecting the Touch Position
    8.
    发明申请
    Touch Position Detector of Capacitive Touch Panel and Method for Detecting the Touch Position 有权
    电容触摸面板的触摸位置检测器和触摸位置检测方法

    公开(公告)号:US20090032312A1

    公开(公告)日:2009-02-05

    申请号:US11971788

    申请日:2008-01-09

    IPC分类号: G06F3/044

    CPC分类号: G06F3/044

    摘要: A touch position detector includes a plurality of capacitance sensors, a negative capacitance compensation unit, an analog/digital converter and a micro processing unit. The negative capacitance compensation unit is utilized to compensate the capacitance of the capacitance sensor and get a capacitance change. The micro controller unit is utilized to detect the touch position according to the capacitance change. It is easy to get the touch position by using the touch position detector.

    摘要翻译: 触摸位置检测器包括多个电容传感器,负电容补偿单元,模拟/数字转换器和微处理单元。 负电容补偿单元用于补偿电容传感器的电容并获得电容变化。 微控制器单元用于根据电容变化来检测触摸位置。 使用触摸位置检测器很容易得到触摸位置。

    Equalized capacitive touchpad and touch positioning method
    9.
    发明授权
    Equalized capacitive touchpad and touch positioning method 有权
    均衡电容触摸板和触摸定位方法

    公开(公告)号:US08525801B2

    公开(公告)日:2013-09-03

    申请号:US12382764

    申请日:2009-03-24

    IPC分类号: G09G5/00

    CPC分类号: G06F3/044 G06F3/0418

    摘要: An equalized capacitive touchpad and a touch positioning method for a capacitive touchpad use an equalizer to correct a sensed value detected from a sensing line of the capacitive touchpad, to thereby offset the attenuation of the sensed value due to the impedance of the sensing line. Thus, the sensed values generated from different positions along a sensing line are equalized, and the touch positioning accuracy of the capacitive touchpad is improved.

    摘要翻译: 用于电容式触摸板的均衡电容式触摸板和触摸定位方法使用均衡器来校正从电容式触摸板的感测线检测到的感测值,从而抵消由感测线的阻抗引起的感测值的衰减。 因此,沿着感测线的不同位置产生的感测值被均衡,电容式触摸板的触摸定位精度提高。

    Object Location Sensor of Touch Panel
    10.
    发明申请
    Object Location Sensor of Touch Panel 审中-公开
    触摸屏的物体位置传感器

    公开(公告)号:US20080308323A1

    公开(公告)日:2008-12-18

    申请号:US11971762

    申请日:2008-01-09

    IPC分类号: G06F3/044

    CPC分类号: G06F3/044

    摘要: An object location sensor of a touch panel has at least one capacitive sensing set having two adjacent capacitive sensors. The at least one capacitive sensing set is arranged along a direction, one capacitive sensor has a capacitance value increasing gradually along the direction, and another capacitive sensor has a capacitance value decreasing gradually along the direction.

    摘要翻译: 触摸面板的物体位置传感器具有至少一个具有两个相邻电容传感器的电容感测组。 所述至少一个电容感测组沿着一个方向布置,一个电容传感器具有沿该方向逐渐增加的电容值,另一个电容传感器具有沿该方向逐渐减小的电容值。