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    METHOD AND APPARATUS TO IMPROVE NOISE IMMUNITY OF A TOUCH SENSE ARRAY
    6.
    发明申请
    METHOD AND APPARATUS TO IMPROVE NOISE IMMUNITY OF A TOUCH SENSE ARRAY 有权
    提高触觉感知阵列噪声免疫的方法和装置

    公开(公告)号：US20120268415A1

    公开(公告)日：2012-10-25

    申请号：US13246565

    申请日：2011-09-27

    申请人： Anton Konovalov ,  Andriy Yarosh ,  Andriy Maharyta ,  Roman Ogirko ,  Oleksandr Pirogov ,  Roman Sharamaga ,  Viktor Kremin

    发明人： Anton Konovalov ,  Andriy Yarosh ,  Andriy Maharyta ,  Roman Ogirko ,  Oleksandr Pirogov ,  Roman Sharamaga ,  Viktor Kremin

    IPC分类号： G06F3/044

    CPC分类号： G06F3/044 ,  G06F3/0418

    摘要： A method for improving noise immunity of capacitive sensing circuit associated with a touch sense array is disclosed. The capacitive sensing circuit receives a response signal from a touch sense array. The capacitive sensing circuit measures a noise component of the response signal. When a level of noise of the noise component within a passband of the capacitive sensing circuit is greater than a threshold, the capacitive sensing circuit changes at least one parameter of capacitive sensing circuit to move the passband substantially outside the frequency spectrum of the noise component.

    摘要翻译： 公开了一种用于提高与触摸感测阵列相关的电容式感测电路的抗噪声性的方法。 电容感测电路从触摸感测阵列接收响应信号。 电容感测电路测量响应信号的噪声分量。 当电容感测电路的通带内的噪声分量的噪声水平大于阈值时，电容感测电路改变电容式感测电路的至少一个参数，以使通带基本上在噪声分量的频谱外移动。

    Compensation circuit for a TX-RX capacitive sensor
    8.
    发明授权
    Compensation circuit for a TX-RX capacitive sensor 有权
    TX-RX电容式传感器的补偿电路

    公开(公告)号：US08890547B2

    公开(公告)日：2014-11-18

    申请号：US13345504

    申请日：2012-01-06

    申请人： Andriy Maharyta ,  Viktor Kremin

    发明人： Andriy Maharyta ,  Viktor Kremin

    IPC分类号： G06F3/044 ,  G01R27/26

    CPC分类号： G01R27/2605 ,  G06F3/044

    摘要： A capacitive sensor may include a transmit electrode and a receive electrode capacitively coupled with the transmit electrode. A capacitance sensing circuit senses a capacitance between the transmit and receive electrodes by applying a signal to the transmit electrode and rectifying a signal induced at the receive electrode. A compensation circuit reduces the effect of a mutual and parasitic capacitances of the transmit and receive electrode pair by adding a compensation signal to the rectified signal.

    摘要翻译： 电容传感器可以包括发射电极和与发射电极电容耦合的接收电极。 电容感测电路通过向发射电极施加信号并整流在接收电极处感应的信号来感测发射电极和接收电极之间的电容。 补偿电路通过向整流信号添加补偿信号来减小发射和接收电极对的相互和寄生电容的影响。

    Capacitance to frequency converter
    9.
    发明授权
    Capacitance to frequency converter 有权
    变频器电容

    公开(公告)号：US08536902B1

    公开(公告)日：2013-09-17

    申请号：US13301764

    申请日：2011-11-21

    申请人： Andriy Maharyta ,  Viktor Kremin

    发明人： Andriy Maharyta ,  Viktor Kremin

    IPC分类号： H03C3/00

    CPC分类号： H03K17/955 ,  G01D5/24 ,  G01R27/2605 ,  H03K2217/960725 ,  H03K2217/96074

    摘要： A capacitance to frequency converter includes a switching capacitor circuit, a charge dissipation circuit, a comparator, and a signal generator. The switching capacitor circuit charges a sensing capacitor and transfers charge from the sensing capacitor to a circuit node of the charge dissipation circuit. The comparator is coupled to the charge dissipation circuit to compare a potential at the circuit node to a reference voltage. The signal generator is coupled to an output of the comparator and to the charge dissipation circuit. The signal generator is responsive to the output of the comparator to generate a signal fed back to control the charge dissipation circuit. A frequency of the signal is proportional to a capacitance of the sensing capacitor.

    摘要翻译： 电容变频器包括开关电容器电路，电荷耗散电路，比较器和信号发生器。 开关电容器电路对感测电容器充电，并将电荷从感测电容器传送到电荷耗散电路的电路节点。 比较器耦合到电荷耗散电路以将电路节点处的电位与参考电压进行比较。 信号发生器耦合到比较器的输出端和电荷耗散电路。 信号发生器响应比较器的输出以产生反馈信号以控制电荷耗散电路。 信号的频率与感测电容器的电容成正比。