公开(公告)号：US20150145801A1

公开(公告)日：2015-05-28

申请号：US13619328

申请日：2012-09-14

申请人： Paolo Angelini ,  Giovanni Carlo Tripoli ,  Ernesto Lasalandra ,  Tommaso Ungaretti ,  Kien Beng Tan ,  Yannick Guedon ,  Dianbo Guo ,  Sze-Kwang Tan

发明人： Paolo Angelini ,  Giovanni Carlo Tripoli ,  Ernesto Lasalandra ,  Tommaso Ungaretti ,  Kien Beng Tan ,  Yannick Guedon ,  Dianbo Guo ,  Sze-Kwang Tan

IPC分类号： G06F3/044

CPC分类号： G06F3/044 ,  G06F3/0416

摘要： Capacitance sensing circuits and methods are provided. The capacitance sensing circuit includes a capacitance-to-voltage converter configured to receive a signal from a capacitance to be sensed and to provide an output signal representative of the capacitance, an output chopper configured to convert the output signal of the capacitance-to-voltage converter to a sensed voltage representative of the capacitance to be sensed, an analog accumulator configured to accumulate sensed voltages during an accumulation period of NA sensing cycles and to provide an accumulated analog value, an amplifier configured to amplify the accumulated analog value, and an analog-to-digital converter configured to convert the amplified accumulated analog value to a digital value representative of the capacitance to be sensed. The analog accumulator may include a low pass filter having a frequency response to filter wideband noise.

摘要翻译： 提供电容感测电路和方法。 电容感测电路包括：电容 - 电压转换器，被配置为从要感测的电容接收信号并提供表示电容的输出信号;输出斩波器，被配置为转换电容 - 电压的输出信号 转换器到感测的电压，代表要感测的电容;模拟累加器，被配置为在NA感测周期的累积周期期间累积感测电压并提供累加的模拟值，被配置为放大所累积的模拟值的放大器和模拟 配置为将放大的累积模拟值转换为表示要感测的电容的数字值。 模拟累加器可以包括具有对滤波器宽带噪声的频率响应的低通滤波器。

公开(公告)号：US08344928B2

公开(公告)日：2013-01-01

申请号：US12943241

申请日：2010-11-10

申请人： Yannick Guedon ,  Kien Beng Tan

发明人： Yannick Guedon ,  Kien Beng Tan

IPC分类号： H03M1/12

CPC分类号： H03M3/356 ,  H03K17/962 ,  H03M3/43 ,  H03M3/456

摘要： A capacitance-to-digital converter for an extended range of capacitances includes a reference capacitor and one or more offset capacitors. Electrical charge accumulated in the offset capacitors is used to at least partially cancel the charge accumulated in a sensed capacitance to facilitate matching with a charge accumulated in the reference capacitor. The residual charge is passed to an integrator, the output from which is quantized and used to control switching of the capacitors. Immunity to tonal external noises and improved conversion speed are achieved by controlling the capacitor switching with a spread spectrum clock. The capacitance-to-digital converter may be used, for example, for sensing of the capacitances of capacitive elements in touch and proximity displays or other user interfaces.

摘要翻译： 用于扩展电容范围的电容数字转换器包括参考电容器和一个或多个失调电容器。 积分在偏移电容器中的电荷用于至少部分地消除在感测电容中累积的电荷，以便于与参考电容器中累积的电荷匹配。 剩余电荷被传递到积分器，其输出被量化并用于控制电容器的开关。 通过用扩频时钟控制电容器切换，实现对音调外部噪声和转换速度的提高。 电容数字转换器可以用于例如感​​测触摸和接近显示器或其他用户接口中的电容元件的电容。

公开(公告)号：US20120112817A1

公开(公告)日：2012-05-10

申请号：US12943241

申请日：2010-11-10

申请人： Yannick Guedon ,  Kien Beng Tan

发明人： Yannick Guedon ,  Kien Beng Tan

IPC分类号： H03K17/945 ,  H03M1/12

CPC分类号： H03M3/356 ,  H03K17/962 ,  H03M3/43 ,  H03M3/456

摘要： A capacitance-to-digital converter for an extended range of capacitances includes a reference capacitor and one or more offset capacitors. Electrical charge accumulated in the offset capacitors is used to at least partially cancel the charge accumulated in a sensed capacitance to facilitate matching with a charge accumulated in the reference capacitor. The residual charge is passed to an integrator, the output from which is quantized and used to control switching of the capacitors. Immunity to tonal external noises and improved conversion speed are achieved by controlling the capacitor switching with a spread spectrum clock. The capacitance-to-digital converter may be used, for example, for sensing of the capacitances of capacitive elements in touch and proximity displays or other user interfaces.

摘要翻译： 用于扩展电容范围的电容数字转换器包括参考电容器和一个或多个失调电容器。 积分在偏移电容器中的电荷用于至少部分地消除在感测电容中累积的电荷，以便于与参考电容器中累积的电荷匹配。 剩余电荷被传递到积分器，其输出被量化并用于控制电容器的开关。 通过用扩频时钟控制电容器切换，实现对音调外部噪声和转换速度的提高。 电容数字转换器可以用于例如感​​测触摸和接近显示器或其他用户接口中的电容元件的电容。

公开(公告)号：US09128573B2

公开(公告)日：2015-09-08

申请号：US13619328

申请日：2012-09-14

申请人： Paolo Angelini ,  Giovanni Carlo Tripoli ,  Ernesto Lasalandra ,  Tommaso Ungaretti ,  Kien Beng Tan ,  Yannick Guedon ,  Dianbo Guo ,  Sze-Kwang Tan

发明人： Paolo Angelini ,  Giovanni Carlo Tripoli ,  Ernesto Lasalandra ,  Tommaso Ungaretti ,  Kien Beng Tan ,  Yannick Guedon ,  Dianbo Guo ,  Sze-Kwang Tan

IPC分类号： G06F3/044

CPC分类号： G06F3/044 ,  G06F3/0416

摘要： Capacitance sensing circuits and methods are provided. The capacitance sensing circuit includes a capacitance-to-voltage converter configured to receive a signal from a capacitance to be sensed and to provide an output signal representative of the capacitance, an output chopper configured to convert the output signal of the capacitance-to-voltage converter to a sensed voltage representative of the capacitance to be sensed, an analog accumulator configured to accumulate sensed voltages during an accumulation period of NA sensing cycles and to provide an accumulated analog value, an amplifier configured to amplify the accumulated analog value, and an analog-to-digital converter configured to convert the amplified accumulated analog value to a digital value representative of the capacitance to be sensed. The analog accumulator may include a low pass filter having a frequency response to filter wideband noise.

摘要翻译： 提供电容感测电路和方法。 电容感测电路包括：电容 - 电压转换器，被配置为从要感测的电容接收信号并提供表示电容的输出信号;输出斩波器，被配置为转换电容 - 电压的输出信号 转换器到感测的电压，代表要感测的电容;模拟累加器，被配置为在NA感测周期的累积周期期间累积感测电压并提供累加的模拟值，被配置为放大所累积的模拟值的放大器和模拟 配置为将放大的累积模拟值转换为表示要感测的电容的数字值。 模拟累加器可以包括具有对滤波器宽带噪声的频率响应的低通滤波器。

公开(公告)号：US09019229B2

公开(公告)日：2015-04-28

申请号：US12732581

申请日：2010-03-26

申请人： Yannick Guedon ,  Kien Beng Tan

发明人： Yannick Guedon ,  Kien Beng Tan

IPC分类号： G06F3/044 ,  H03M11/20 ,  G06F3/041 ,  H03M3/00

CPC分类号： H03M11/20 ,  G06F3/0416 ,  G06F3/044 ,  H03K2217/960725 ,  H03M3/43

摘要： A circuit for converting charge measured from a touch screen into a digital signal can include a sample and hold circuit. The sample and hold circuit can sample and integrate a charge from a capacitive sense matrix, and hold a voltage signal representing the measured charge. A sigma delta converter can convert the voltage into a digital value.

摘要翻译： 用于将从触摸屏测量的电荷转换为数字信号的电路可以包括采样和保持电路。 采样和保持电路可以对来自电容检测矩阵的电荷进行采样和积分，并保持表示测量电荷的电压信号。 Σ-Δ转换器可将电压转换为数字值。

公开(公告)号：US20110234528A1

公开(公告)日：2011-09-29

申请号：US12732581

申请日：2010-03-26

申请人： Yannick Guedon ,  Kien Beng Tan

发明人： Yannick Guedon ,  Kien Beng Tan

IPC分类号： G06F3/045 ,  H03M1/12

CPC分类号： H03M11/20 ,  G06F3/0416 ,  G06F3/044 ,  H03K2217/960725 ,  H03M3/43

摘要： A circuit for converting charge measured from a touch screen into a digital signal can include a sample and hold circuit. The sample and hold circuit can sample and integrate a charge from a capacitive sense matrix, and hold a voltage signal representing the measured charge. A sigma delta converter can convert the voltage into a digital value.

摘要翻译： 用于将从触摸屏测量的电荷转换为数字信号的电路可以包括采样和保持电路。 采样和保持电路可以对来自电容检测矩阵的电荷进行采样和积分，并保持表示测量电荷的电压信号。 Σ-Δ转换器可将电压转换为数字值。

公开(公告)号：US09244569B2

公开(公告)日：2016-01-26

申请号：US12972159

申请日：2010-12-17

申请人： Yannick Guedon ,  Kien Beng Tan ,  Kusuma Adi Ningrat ,  Dianbo Guo

发明人： Yannick Guedon ,  Kien Beng Tan ,  Kusuma Adi Ningrat ,  Dianbo Guo

IPC分类号： G06F3/045 ,  G06F3/044

CPC分类号： G06F3/044

摘要： A capacitive sensing analog front end for a touchscreen system having an improved signal-to-noise ratio includes a capacitance-to-voltage converter having an input for coupling to an external sampling capacitor, a summer having a first input coupled to an output of the capacitance-to-voltage converter, a low pass filter having an input coupled to an output of the summer and an output for providing an output signal; and a sample-and-hold circuit having an input coupled to the output of the low pass filter and an output coupled to a second input of the summer. The signal-to-noise ratio of the touchscreen system is improved by extracting the DC shift of a touch signal during a monitoring period and then subtracting the DC shift before integrating the touch signal.

摘要翻译： 具有改进的信噪比的用于触摸屏系统的电容感测模拟前端包括具有用于耦合到外部采样电容器的输入的电容 - 电压转换器，具有耦合到所述外部采样电容器的输出的第一输入的加法器 电容 - 电压转换器，具有耦合到所述加法器的输出的输入端的低通滤波器和用于提供输出信号的输出; 以及采样保持电路，其具有耦合到所述低通滤波器的输出的输入和耦合到所述夏季的第二输入的输出。 通过在监视期间提取触摸信号的直流偏移，然后在积分触摸信号之前减去直流偏移，来提高触摸屏系统的信噪比。

公开(公告)号：US08604798B2

公开(公告)日：2013-12-10

申请号：US12965170

申请日：2010-12-10

申请人： Anthony Junior Casillan ,  Yannick Guedon ,  Dianbo Guo

发明人： Anthony Junior Casillan ,  Yannick Guedon ,  Dianbo Guo

IPC分类号： G01R31/28 ,  G01R31/08

CPC分类号： G06F3/044 ,  G06F3/0416

摘要： A short circuit detection module for a touch panel includes first and second short circuit detection circuits. The first short circuit detection circuit is coupled to a first conductive line of the touch panel. The first short circuit detection circuit is configured to drive the first conductive line with a first signal having a first logic level. The second short circuit detection circuit is coupled to second, adjacent, conductive line of the touch panel. The second short circuit detection circuit is configured to drive the second conductive line with a second signal having a second logic level that is complementary to the first logic level.

摘要翻译： 用于触摸面板的短路检测模块包括第一和第二短路检测电路。 第一短路检测电路耦合到触摸面板的第一导电线。 第一短路检测电路被配置为用具有第一逻辑电平的第一信号驱动第一导线。 第二短路检测电路耦合到触摸面板的第二相邻的导电线。 第二短路检测电路被配置为用具有与第一逻辑电平互补的第二逻辑电平的第二信号来驱动第二导线。

公开(公告)号：US20080007231A1

公开(公告)日：2008-01-10

申请号：US11757865

申请日：2007-06-04

申请人： Philippe Maige ,  Yannick Guedon

发明人： Philippe Maige ,  Yannick Guedon

IPC分类号： G05F1/613

CPC分类号： G05F1/575

摘要： A low drop-out DC voltage regulator regulates a voltage from a DC supply and includes: a pass device controllable to maintain a voltage at an output of the regulator and arranged to provide a first current from the DC supply, at least part of said first current being provided to a load coupled to the output of the regulator; and a current regulator coupled to said pass device and to the output of the regulator. The current regulator is arranged to conduct a second current controllable such that the first current through said pass device remains constant irrespective of variations in a load current to said load.

摘要翻译： 低压差直流电压调节器调节来自直流电源的电压，并且包括：通过装置，其可控制以在调节器的输出端保持电压并被布置成提供来自DC电源的第一电流，所述第一 电流被提供到耦合到调节器的输出的负载; 以及耦合到所述通过装置和调节器的输出的电流调节器。 电流调节器被布置成传导可控的第二电流，使得通过所述通过装置的第一电流保持恒定，而与负载电流的变化无关。

公开(公告)号：US20070018535A1

公开(公告)日：2007-01-25

申请号：US11481412

申请日：2006-07-05

申请人： Yannick Guedon ,  Michael Giovannini ,  Corinne Ianigro

发明人： Yannick Guedon ,  Michael Giovannini ,  Corinne Ianigro

IPC分类号： H01L41/09

CPC分类号： G02B7/102 ,  H02N2/021 ,  H02N2/067

摘要： A method for controlling a piezoelectric motor, such that control signals of the motor are periodic non-sinusoidal voltage signals.

摘要翻译： 一种用于控制压电电动机的方法，使得电动机的控制信号是周期性的非正弦电压信号。