公开(公告)号：US20150324061A1

公开(公告)日：2015-11-12

申请号：US14512512

申请日：2014-10-13

Applicant: Qualcomm Technologies, Inc.

Inventor： Guozhong Shen ,  Ozan E. Erdogan ,  Syed T. Mahmud ,  Kenneth W. Knox

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044

Abstract: A touch panel sensor system that can dynamically measure noise and automatically switch to a frequency with minimal noise is described. The touch panel sensor system includes a sensor configured to detect a change in capacitance associated with a touch upon a touch panel. The system also includes a drive module configured to generate a drive signal having a first waveform characteristic (e.g., signal having a periodic waveform characteristic) during a first phase (e.g., sensor phase) and a second drive signal having a second waveform characteristic (e.g., constant voltage signal) during a second phase (e.g., noise detection phase). The first and second drive signals are configured to drive the sensor. The system also includes a measuring module coupled to the sensor that is configured to measure noise having the first waveform characteristic (e.g., periodic waveform characteristic) during the second phase.

Abstract translation: 描述了可以动态地测量噪声并且以最小噪声自动切换到频率的触摸屏传感器系统。 触摸面板传感器系统包括被配置为检测与触摸面板上的触摸相关联的电容的变化的传感器。 该系统还包括驱动模块，该驱动模块被配置为在第一阶段（例如，传感器相位）期间产生具有第一波形特征的驱动信号（例如具有周期性波形特性的信号）和具有第二波形特性的第二驱动信号（例如， ，恒定电压信号）在第二阶段（例如，噪声检测阶段）。 第一和第二驱动信号被配置为驱动传感器。 该系统还包括耦合到传感器的测量模块，该测量模块被配置成在第二阶段期间测量具有第一波形特性（例如周期性波形特性）的噪声。

公开(公告)号：US09552102B2

公开(公告)日：2017-01-24

申请号：US14512512

申请日：2014-10-13

Applicant: Qualcomm Technologies, Inc.

Inventor： Guozhong Shen ,  Ozan E. Erdogan ,  Syed T. Mahmud ,  Kenneth W. Knox

IPC: G01R29/26 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044

Abstract: A touch panel sensor system that can dynamically measure noise and automatically switch to a frequency with minimal noise is described. The touch panel sensor system includes a sensor configured to detect a change in capacitance associated with a touch upon a touch panel. The system also includes a drive module configured to generate a drive signal having a first waveform characteristic (e.g., signal having a periodic waveform characteristic) during a first phase (e.g., sensor phase) and a second drive signal having a second waveform characteristic (e.g., constant voltage signal) during a second phase (e.g., noise detection phase). The first and second drive signals are configured to drive the sensor. The system also includes a measuring module coupled to the sensor that is configured to measure noise having the first waveform characteristic (e.g., periodic waveform characteristic) during the second phase.

Abstract translation: 描述了可以动态地测量噪声并且以最小噪声自动切换到频率的触摸屏传感器系统。 触摸面板传感器系统包括被配置为检测与触摸面板上的触摸相关联的电容的变化的传感器。 该系统还包括驱动模块，该驱动模块被配置为在第一阶段（例如，传感器相位）期间产生具有第一波形特征的驱动信号（例如具有周期性波形特性的信号）和具有第二波形特性的第二驱动信号（例如， ，恒定电压信号）在第二阶段（例如，噪声检测阶段）。 第一和第二驱动信号被配置为驱动传感器。 该系统还包括耦合到传感器的测量模块，该测量模块被配置成在第二阶段期间测量具有第一波形特性（例如周期性波形特性）的噪声。