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    CAPACITIVE TOUCH SENSE ARCHITECTURE
    1.
    发明申请
    CAPACITIVE TOUCH SENSE ARCHITECTURE 有权
    电容触摸感知架构

    公开(公告)号：US20130162586A1

    公开(公告)日：2013-06-27

    申请号：US13403873

    申请日：2012-02-23

    申请人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud ,  Rahim Chowdhury

    发明人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud ,  Rahim Chowdhury

    IPC分类号： G01R27/26 ,  G06F3/044

    CPC分类号： G01R27/2605 ,  G06F3/0416 ,  G06F3/044

    摘要： An analog front end circuit utilizes coherent detection within a capacitance measurement application. The analog front end circuit uses coherent detection to measure capacitance of a touch screen display. An analog excitation signal is modulated by a capacitor to be measured. The modulated signal is synchronously demodulated using a correlator, which includes a discrete mixer and a discrete integrator. The excitation signal is also input to the mixer such that the modulated signal is multiplied by the excitation signal. The excitation signal is an analog signal having a sine wave function or other waveform.

    摘要翻译： 模拟前端电路在电容测量应用中使用相干检测。 模拟前端电路使用相干检测来测量触摸屏显示器的电容。 模拟激励信号由要测量的电容器调制。 调制信号使用相关器进行同步解调，相关器包括离散混频器和离散积分器。 激励信号也被输入到混频器，使得调制信号与激励信号相乘。 激励信号是具有正弦波函数或其他波形的模拟信号。

    MIXED-SIGNAL INTEGRATOR ARCHITECTURE
    3.
    发明申请
    MIXED-SIGNAL INTEGRATOR ARCHITECTURE 有权
    混合信号整合器架构

    公开(公告)号：US20120274404A1

    公开(公告)日：2012-11-01

    申请号：US13404722

    申请日：2012-02-24

    申请人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    发明人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    IPC分类号： H03F1/34

    CPC分类号： G01R27/2605 ,  G01D5/24 ,  G06F3/0416 ,  G06F3/044

    摘要： A mixed signal correlator utilizes coherent detection within a capacitance measurement application. In some applications, the mixed signal correlator is used to measure capacitance of a touch screen display. An external capacitor whose capacitance is measured is kept small for improved sensitivity and can be used for a variety of applications having varied integration periods for measurement. The external capacitor is kept small and can be used for varied applications by adjusting the output voltage within a range that is less than the supply voltage, and maintaining a count of the adjustments to later reconstruct an actual output voltage for the integration period. An output is a weighted sum of an analog integrator output and a digital counter output.

    摘要翻译： 混合信号相关器在电容测量应用中利用相干检测。 在一些应用中，混合信号相关器用于测量触摸屏显示器的电容。 测量电容的外部电容器保持较小，以提高灵敏度，并且可以用于具有不同的测量积分周期的各种应用。 外部电容器保持较小，可以通过将输出电压调整到小于电源电压的范围内，并且保持调整次数以便在整合期间重建实际输出电压，可用于各种应用。 输出是模拟积分器输出和数字计数器输出的加权和。

    Continuous time correlator architecture
    4.
    发明授权
    Continuous time correlator architecture 有权
    连续时间相关器架构

    公开(公告)号：US08643619B2

    公开(公告)日：2014-02-04

    申请号：US13404594

    申请日：2012-02-24

    申请人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    发明人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    IPC分类号： G06F3/041

    CPC分类号： G01R27/2605 ,  G01D5/24 ,  G06F3/0416 ,  G06F3/044

    摘要： An analog front end circuit utilizes coherent detection within a capacitance measurement application. The analog front end circuit uses coherent detection to measure capacitance of a touch screen display. An analog excitation signal is modulated by a capacitor to be measured. The modulated signal is synchronously demodulated using a correlator, which includes an integrated mixing and integration circuit. The correlator includes a programmable impedance element that generates a time-varying conductance according to a controlling digitized waveform.

    摘要翻译： 模拟前端电路在电容测量应用中使用相干检测。 模拟前端电路使用相干检测来测量触摸屏显示器的电容。 模拟激励信号由要测量的电容器调制。 调制信号使用相关器进行同步解调，相关器包括一个集成的混合和积分电路。 相关器包括根据控制数字化波形产生时变电导的可编程阻抗元件。

    CALIBRATION FOR MIXED-SIGNAL INTEGRATOR ARCHITECTURE
    5.
    发明申请
    CALIBRATION FOR MIXED-SIGNAL INTEGRATOR ARCHITECTURE 有权
    混合信号整合器架构的校准

    公开(公告)号：US20120218020A1

    公开(公告)日：2012-08-30

    申请号：US13404817

    申请日：2012-02-24

    申请人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    发明人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    IPC分类号： G06G7/184

    CPC分类号： G01R27/2605 ,  G01D5/24 ,  G06F3/0416 ,  G06F3/044

    摘要： A mixed signal correlator utilizes coherent detection within a capacitance measurement application. In some applications, the mixed signal correlator is used to measure capacitance of a touch screen display. An external capacitor whose capacitance is measured is kept small for improved sensitivity and can be used for a variety of applications having varied integration periods for measurement. The external capacitor is kept small and can be used for varied applications by adjusting the output voltage within a range that is less than the supply voltage, and maintaining a count of the adjustments to later reconstruct an actual output voltage for the integration period. An output is a weighted sum of an analog integrator output and a digital counter output.

    摘要翻译： 混合信号相关器在电容测量应用中利用相干检测。 在一些应用中，混合信号相关器用于测量触摸屏显示器的电容。 测量电容的外部电容器保持较小，以提高灵敏度，并且可以用于具有不同的测量积分周期的各种应用。 外部电容器保持较小，可以通过将输出电压调整到小于电源电压的范围内，并且保持调整次数以便在整合期间重建实际输出电压，可用于各种应用。 输出是模拟积分器输出和数字计数器输出的加权和。

    Calibration for mixed-signal integrator architecture
    6.
    发明授权
    Calibration for mixed-signal integrator architecture 有权
    混合信号积分器架构的校准

    公开(公告)号：US08659343B2

    公开(公告)日：2014-02-25

    申请号：US13404817

    申请日：2012-02-24

    申请人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    发明人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    IPC分类号： G06F7/64

    CPC分类号： G01R27/2605 ,  G01D5/24 ,  G06F3/0416 ,  G06F3/044

    摘要： A mixed signal correlator utilizes coherent detection within a capacitance measurement application. In some applications, the mixed signal correlator is used to measure capacitance of a touch screen display. An external capacitor whose capacitance is measured is kept small for improved sensitivity and can be used for a variety of applications having varied integration periods for measurement. The external capacitor is kept small and can be used for varied applications by adjusting the output voltage within a range that is less than the supply voltage, and maintaining a count of the adjustments to later reconstruct an actual output voltage for the integration period. An output is a weighted sum of an analog integrator output and a digital counter output.

    摘要翻译： 混合信号相关器在电容测量应用中利用相干检测。 在一些应用中，混合信号相关器用于测量触摸屏显示器的电容。 测量电容的外部电容器保持较小，以提高灵敏度，并且可以用于具有不同的测量积分周期的各种应用。 外部电容器保持较小，可以通过将输出电压调整到小于电源电压的范围内，并且保持调整次数以便在整合期间重建实际输出电压，可用于各种应用。 输出是模拟积分器输出和数字计数器输出的加权和。

    Mixed-signal integrator architecture
    7.
    发明授权
    Mixed-signal integrator architecture 有权
    混合信号积分器架构

    公开(公告)号：US08575988B2

    公开(公告)日：2013-11-05

    申请号：US13404722

    申请日：2012-02-24

    申请人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    发明人： Ozan E. Erdogan ,  Guozhong Shen ,  Rajesh Anantharaman ,  Ajay Taparia ,  Behrooz Javid ,  Syed T. Mahmud

    IPC分类号： H03K5/00

    CPC分类号： G01R27/2605 ,  G01D5/24 ,  G06F3/0416 ,  G06F3/044

    摘要： A mixed signal correlator utilizes coherent detection within a capacitance measurement application. In some applications, the mixed signal correlator is used to measure capacitance of a touch screen display. An external capacitor whose capacitance is measured is kept small for improved sensitivity and can be used for a variety of applications having varied integration periods for measurement. The external capacitor is kept small and can be used for varied applications by adjusting the output voltage within a range that is less than the supply voltage, and maintaining a count of the adjustments to later reconstruct an actual output voltage for the integration period. An output is a weighted sum of an analog integrator output and a digital counter output.

    摘要翻译： 混合信号相关器在电容测量应用中利用相干检测。 在一些应用中，混合信号相关器用于测量触摸屏显示器的电容。 测量电容的外部电容器保持较小，以提高灵敏度，并且可以用于具有不同的测量积分周期的各种应用。 外部电容器保持较小，可以通过将输出电压调整到小于电源电压的范围内，并且保持调整次数以便在整合期间重建实际输出电压，可用于各种应用。 输出是模拟积分器输出和数字计数器输出的加权和。