Quadrature signal receiver using synchronized oscillator
    2.
    发明授权
    Quadrature signal receiver using synchronized oscillator 有权
    使用同步振荡器的正交信号接收机

    公开(公告)号:US08493360B2

    公开(公告)日:2013-07-23

    申请号:US13434571

    申请日:2012-03-29

    IPC分类号: G06F3/045

    摘要: A system comprises a processing device, a signal generator to generate a first signal and a single receiver to receive a second signal from a capacitive sense array. The single receiver is configured to process the second signal for stylus sensing of a stylus proximate to the capacitive sense array in a first mode of operation and to process the second signal for touch sensing of a passive touch object proximate to the capacitive sense array in a second mode of operation. The second signal is unsynchronized with the first signal.

    摘要翻译: 系统包括处理装置,产生第一信号的信号发生器和从电容性感测阵列接收第二信号的单个接收器。 单个接收器被配置为在第一操作模式中处理第二信号以用于接近电容性感测阵列的触笔的触控笔感测,并且处理第二信号以用于触摸感测靠近电容性感测阵列的被动触摸对象 第二种操作模式。 第二信号与第一信号不同步。

    Attenuator circuit of a capacitance-sensing circuit
    3.
    发明授权
    Attenuator circuit of a capacitance-sensing circuit 有权
    电容感应电路的衰减器电路

    公开(公告)号:US08610443B1

    公开(公告)日:2013-12-17

    申请号:US13895115

    申请日:2013-05-15

    IPC分类号: G01R27/26

    摘要: Apparatuses and methods of input attenuator circuits are described. One sensing circuit includes an attenuator circuit to receive a signal from an electrode of a sense array. The attenuator circuit is configured to attenuate input current of the signal. The attenuator circuit includes an attenuation matrix including an input terminal to receive the signal and multiple resistors. The attenuation matrix is configured to split the input current into an output current of the attenuation signal on a first output terminal and a second output current on a second output terminal. The attenuation matrix is to output the attenuated signal on the first output terminal to an integrator of the sensing circuit. The attenuator circuit also includes a buffer coupled between the attenuation matrix and the integrator. The buffer is configured to maintain a substantially same voltage at the first output terminal and the second output terminal.

    摘要翻译: 描述输入衰减器电路的装置和方法。 一个感测电路包括用于从感测阵列的电极接收信号的衰减器电路。 衰减器电路经配置以衰减信号的输入电流。 衰减器电路包括衰减矩阵,该衰减矩阵包括用于接收信号的输入端和多个电阻。 衰减矩阵被配置为将输入电流分为第一输出端上的衰减信号的输出电流和第二输出端上的第二输出电流。 衰减矩阵将第一输出端上的衰减信号输出到感测电路的积分器。 衰减器电路还包括耦合在衰减矩阵和积分器之间的缓冲器。 缓冲器被配置为在第一输出端子和第二输出端子处保持基本相同的电压。

    QUADRATURE SIGNAL RECEIVER USING SYNCHRONIZED OSCILLATOR
    4.
    发明申请
    QUADRATURE SIGNAL RECEIVER USING SYNCHRONIZED OSCILLATOR 有权
    使用同步振荡器的平均信号接收器

    公开(公告)号:US20130021291A1

    公开(公告)日:2013-01-24

    申请号:US13434571

    申请日:2012-03-29

    IPC分类号: G06F3/045 G06F3/033

    摘要: A system comprises a processing device, a signal generator to generate a first signal and a single receiver to receive a second signal from a capacitive sense array. The single receiver is configured to process the second signal for stylus sensing of a stylus proximate to the capacitive sense array in a first mode of operation and to process the second signal for touch sensing of a passive touch object proximate to the capacitive sense array in a second mode of operation. The second signal is unsynchronized with the first signal.

    摘要翻译: 系统包括处理装置,产生第一信号的信号发生器和从电容性感测阵列接收第二信号的单个接收器。 单个接收器被配置为在第一操作模式中处理第二信号以用于接近电容性感测阵列的触笔的触控笔感测,并且处理第二信号以用于触摸感测靠近电容性感测阵列的被动触摸对象 第二种操作模式。 第二信号与第一信号不同步。