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公开(公告)号：US08638107B2
公开(公告)日：2014-01-28
申请号：US12970898
申请日：2010-12-16
CPC分类号： G01R27/2605 , G06F3/0416 , G06F3/044
摘要： A transcapacitive sensing device has and ohmic seam which sections a plurality of transmitter electrodes and also sections a plurality of receiver electrodes. A processing system is communicatively coupled with the transmitter electrodes and the receiver electrodes and configured to: transmit a first transmitter signal with a first transmitter electrode disposed on a first side of the ohmic seam; transmit a second transmitter signal with a second transmitter electrode disposed on a second side of the ohmic seam; receive a first response corresponding to said first transmitter signal with a first receiver electrode disposed on the first side of the ohmic seam; and receive a second response corresponding to said second transmitter signal with a second receiver electrode disposed on the second side of the ohmic seam.
摘要翻译： 转录感测装置具有欧姆接缝，其对多个发射器电极进行分割，并且还对多个接收器电极进行切片。 处理系统与发射机电极和接收器电极通信地耦合，并且被配置为：用设置在欧姆接缝的第一侧上的第一发射器电极发射第一发射机信号; 用设置在欧姆接缝的第二侧上的第二发射器电极传输第二发射机信号; 接收与所述第一发射机信号对应的第一响应，其中第一接收器电极设置在欧姆接缝的第一侧上; 并且接收与所述第二发射机信号对应的第二响应，其中第二接收机电极设置在欧姆接缝的第二侧上。
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公开(公告)号：US20110148435A1
公开(公告)日：2011-06-23
申请号：US12970898
申请日：2010-12-16
IPC分类号： G01R27/26
CPC分类号： G01R27/2605 , G06F3/0416 , G06F3/044
摘要： A transcapacitive sensing device has and ohmic seam which sections a plurality of transmitter electrodes and also sections a plurality of receiver electrodes. A processing system is communicatively coupled with the transmitter electrodes and the receiver electrodes and configured to: transmit a first transmitter signal with a first transmitter electrode disposed on a first side of the ohmic seam; transmit a second transmitter signal with a second transmitter electrode disposed on a second side of the ohmic seam; receive a first response corresponding to said first transmitter signal with a first receiver electrode disposed on the first side of the ohmic seam; and receive a second response corresponding to said second transmitter signal with a second receiver electrode disposed on the second side of the ohmic seam.
摘要翻译： 转录感测装置具有欧姆接缝，其对多个发射器电极进行分割，并且还对多个接收器电极进行切片。 处理系统与发射机电极和接收器电极通信地耦合，并且被配置为：用设置在欧姆接缝的第一侧上的第一发射器电极发射第一发射机信号; 用设置在欧姆接缝的第二侧上的第二发射器电极传输第二发射机信号; 接收与所述第一发射机信号对应的第一响应，其中第一接收器电极设置在欧姆接缝的第一侧上; 并且接收与所述第二发射机信号对应的第二响应，其中第二接收机电极设置在欧姆接缝的第二侧上。
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公开(公告)号：US08743080B2
公开(公告)日：2014-06-03
申请号：US13170035
申请日：2011-06-27
IPC分类号： G06F3/045
CPC分类号： G08C19/12
摘要： A processing system includes transmitter module, receiver module, and a demodulating module. The transmitter module comprises transmitter circuitry and is configured to simultaneously transmit a first transmitter signal with a first transmitter electrode and a second transmitter signal with a second transmitter electrode. The first transmitter signal includes a combination of a first heterodyne frequency and a carrier frequency. The second transmitter signal comprises a combination of a second heterodyne frequency and the carrier frequency. The receiver module comprise receiver circuitry and is configured to receive a first resulting signal with a receiver electrode, wherein the first resulting signal comprises first effects corresponding to the first transmitter signal and second effects corresponding to the second transmitter signal. The demodulating module is configured to demodulate the first resulting signal to produce a plurality of demodulation signals, wherein the demodulating module comprises a first mixer, a second mixer, a third mixer, a first filter, a second filter and a third filter. The first mixer includes a mixing frequency corresponding to the carrier frequency, the second mixer includes a mixing frequency corresponding to the first heterodyne frequency, and the third mixer includes a mixing frequency corresponding to the second heterodyne frequency.
摘要翻译： 处理系统包括发射机模块，接收机模块和解调模块。 发射机模块包括发射机电路，并且被配置为与第二发射机电极同时发送具有第一发射机电极的第一发射机信号和第二发射机信号。 第一发射机信号包括第一外差频率和载波频率的组合。 第二发射机信号包括第二外差频率和载波频率的组合。 接收器模块包括接收器电路，并且被配置为用接收器电极接收第一结果信号，其中第一结果信号包括对应于第一发送器信号的第一效应和对应于第二发送器信号的第二效应。 解调模块被配置为解调第一结果信号以产生多个解调信号，其中解调模块包括第一混频器，第二混频器，第三混频器，第一滤波器，第二滤波器和第三滤波器。 第一混频器包括对应于载波频率的混频，第二混频器包括对应于第一外差频率的混频，第三混频器包括对应于第二外差频率的混频。
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公开(公告)号：US20120326910A1
公开(公告)日：2012-12-27
申请号：US13170035
申请日：2011-06-27
IPC分类号： G08C19/12
CPC分类号： G08C19/12
摘要： A processing system includes transmitter module, receiver module, and a demodulating module. The transmitter module comprises transmitter circuitry and is configured to simultaneously transmit a first transmitter signal with a first transmitter electrode and a second transmitter signal with a second transmitter electrode. The first transmitter signal includes a combination of a first heterodyne frequency and a carrier frequency. The second transmitter signal comprises a combination of a second heterodyne frequency and the carrier frequency. The receiver module comprise receiver circuitry and is configured to receive a first resulting signal with a receiver electrode, wherein the first resulting signal comprises first effects corresponding to the first transmitter signal and second effects corresponding to the second transmitter signal. The demodulating module is configured to demodulate the first resulting signal to produce a plurality of demodulation signals, wherein the demodulating module comprises a first mixer, a second mixer, a third mixer, a first filter, a second filter and a third filter. The first mixer includes a mixing frequency corresponding to the carrier frequency, the second mixer includes a mixing frequency corresponding to the first heterodyne frequency, and the third mixer includes a mixing frequency corresponding to the second heterodyne frequency.
摘要翻译： 处理系统包括发射机模块，接收机模块和解调模块。 发射机模块包括发射机电路，并且被配置为与第二发射机电极同时发送具有第一发射机电极的第一发射机信号和第二发射机信号。 第一发射机信号包括第一外差频率和载波频率的组合。 第二发射机信号包括第二外差频率和载波频率的组合。 接收器模块包括接收器电路，并且被配置为用接收器电极接收第一结果信号，其中第一结果信号包括对应于第一发送器信号的第一效应和对应于第二发送器信号的第二效应。 解调模块被配置为解调第一结果信号以产生多个解调信号，其中解调模块包括第一混频器，第二混频器，第三混频器，第一滤波器，第二滤波器和第三滤波器。 第一混频器包括对应于载波频率的混频，第二混频器包括对应于第一外差频率的混频，第三混频器包括对应于第二外差频率的混频。
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5.发明授权Methods and systems for switched charge transfer capacitance measuring using shared components 有权使用共享组件开关电荷转移电容测量的方法和系统公开(公告)号：US07902842B2
公开(公告)日：2011-03-08
申请号：US11925537
申请日：2007-10-26
IPC分类号： G01R27/26
CPC分类号： H03K17/955 , G01R27/2605 , G06F3/0416 , G06F3/044 , H03K2217/960725
摘要： Methods, systems and devices are described for detecting a measurable capacitance using charge transfer techniques that can be implemented with many standard microcontrollers, and can share components to reduce device complexity and improve performance. In the various implementations of this embodiment, the passive network used to accumulate charge can be shared between multiple measurable capacitances. Likewise, in various implementations a voltage conditioning circuit configured to provide a variable reference voltage can be shared between multiple measurable capacitances. Finally, in various implementations a guarding electrode configured to guard the measurable capacitances can be shared between multiple measurable capacitances. In each of these cases, sharing components can reduce device complexity and improve performance.
摘要翻译： 描述了使用可以用许多标准微控制器实现的电荷转移技术来检测可测量电容的方法，系统和装置，并且可以共享组件以降低器件复杂性并提高性能。 在该实施例的各种实现中，用于累积电荷的无源网络可以在多个可测量电容之间共享。 同样，在各种实施方式中，可以在多个可测量电容之间共享配置成提供可变参考电压的电压调节电路。 最后，在各种实施方式中，可以在多个可测量电容之间共享用于保护可测量电容的保护电极。 在这些情况下，共享组件可以降低设备复杂性并提高性能。
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6.发明授权Methods and systems for detecting a capacitance using sigma-delta measurement techniques 有权使用Σ-Δ测量技术检测电容的方法和系统公开(公告)号：US07948245B2
公开(公告)日：2011-05-24
申请号：US12708339
申请日：2010-02-18
IPC分类号： G01R27/26
CPC分类号： G01R27/2605
摘要： Methods, systems and devices are described for detecting a measurable capacitance using sigma-delta measurement techniques. According to various embodiments, a voltage is applied to the measurable capacitance using a first switch. The measurable capacitance is allowed to share charge with a passive network. If the charge on the passive network is past a threshold value, then the charge on the passive network is changed by a known amount for a sufficient number of repetitions until the measurable capacitance can be detected. Such a detection scheme may be readily implemented using conventional components, and can be particularly useful in sensing the position of a finger, stylus or other object with respect to a button, slider, touchpad or other input sensor.
摘要翻译： 描述了使用Σ-Δ测量技术来检测可测量电容的方法，系统和装置。 根据各种实施例，使用第一开关将电压施加到可测量电容。 允许可测量电容与无源网络共享电荷。 如果无源网络上的电荷超过阈值，则无源网络上的电荷可以通过已知的量改变足够数量的重复，直到可以检测到可测量的电容。 这种检测方案可以使用常规部件容易地实现，并且可以特别有用于相对于按钮，滑块，触摸板或其他输入传感器感测手指，触针或其它物体的位置。
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公开(公告)号：US09804213B2
公开(公告)日：2017-10-31
申请号：US12778940
申请日：2010-05-12
CPC分类号： G01R27/2605 , G06F3/0416 , G06F3/044 , H03K17/955 , H03K17/9622 , H03K2217/960725 , H03K2217/96073 , H03K2217/960765 , H04M2250/12
摘要： A capacitive sensor device comprises a first sensor electrode, a second sensor electrode, and a processing system coupled to the first sensor electrode and the second sensor electrode. The processing system is configured to acquire a first capacitive measurement by emitting and receiving a first electrical signal with the first sensor electrode. The processing system is configured to acquire a second capacitive measurement by emitting and receiving a second electrical signal, wherein one of the first and second sensor electrodes performs the emitting and the other of the first and second sensor electrodes performs the receiving, and wherein the first and second capacitive measurements are non-degenerate. The processing system is configured to determine positional information using the first and second capacitive measurements.
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公开(公告)号：US07924029B2
公开(公告)日：2011-04-12
申请号：US11615408
申请日：2006-12-22
IPC分类号： G01R27/26
CPC分类号： H03K17/955 , H03K17/9622
摘要： Methods and apparatus are provided for measuring a ratio of capacitances. The apparatus include a comparator including a comparator input, a comparator output, and a reference voltage; a first capacitive element including a first capacitance, a first electrode coupled to the comparator input, and a second electrode; a first biasing element coupled to the first electrode; a digitally-controlled voltage waveform generator for generating a varying waveform, the voltage waveform generator including a voltage waveform generator output coupled to the second electrode; a second capacitive element including a second capacitance and a third electrode coupled to the comparator input; and a controller coupled to the comparator output, the controller configured to control the digitally-controlled voltage waveform generator, wherein an output signal of the comparator is dependent on a ratio comprising the first capacitance and the second capacitance, and the first capacitive element and/or the second capacitive element has a variable capacitance.
摘要翻译： 提供了用于测量电容比的方法和装置。 该装置包括比较器，其包括比较器输入，比较器输出和参考电压; 第一电容元件，包括第一电容，耦合到所述比较器输入的第一电极和第二电极; 耦合到所述第一电极的第一偏置元件; 用于产生变化波形的数字控制电压波形发生器，所述电压波形发生器包括耦合到所述第二电极的电压波形发生器输出; 包括第二电容的第二电容元件和耦合到所述比较器输入的第三电极; 以及耦合到所述比较器输出的控制器，所述控制器被配置为控制所述数字控制的电压波形发生器，其中所述比较器的输出信号取决于包括所述第一电容和所述第二电容的比率，并且所述第一电容元件和/ 或者第二电容元件具有可变电容。
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9.发明授权Methods and systems for sigma delta capacitance measuring using shared component 有权使用共享组件进行Σ-Δ电容测量的方法和系统公开(公告)号：US07777501B2
公开(公告)日：2010-08-17
申请号：US11925541
申请日：2007-10-26
IPC分类号： G01R27/26
CPC分类号： H03K17/955 , G01R27/2605 , G06F3/0416 , G06F3/044 , H03K2217/960725
摘要： Methods, systems and devices are described for detecting a measurable capacitance using sigma-delta charge transfer techniques that can be implemented with many standard microcontrollers, and can share components to reduce device complexity and improve performance. In the various implementations of this embodiment, the passive network used to accumulate charge can be shared between multiple measurable capacitances. A switch or IO controlling the charge sharing and/or charge changing can also be shared Likewise, in various implementations a voltage conditioning circuit configured to provide a variable reference voltage can be shared between multiple measurable capacitances. Finally, in various implementations a guarding electrode configured to guard the measurable capacitances can be shared between multiple measurable capacitances. In each of these cases, sharing components can reduce device complexity and improve performance.
摘要翻译： 描述了使用可以用许多标准微控制器实现的Σ-Δ电荷转移技术来检测可测量电容的方法，系统和装置，并且可以共享组件以降低器件复杂性并提高性能。 在该实施例的各种实现中，用于累积电荷的无源网络可以在多个可测量电容之间共享。 也可以共享控制电荷共享和/或电荷改变的开关或IO。同样，在各种实施方式中，可以在多个可测量电容之间共享配置成提供可变参考电压的电压调节电路。 最后，在各种实施方式中，可以在多个可测量电容之间共享用于保护可测量电容的保护电极。 在这些情况下，共享组件可以降低设备复杂性并提高性能。
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10.发明授权Methods and systems for detecting a capacitance using switched charge transfer techniques 有权使用开关电荷转移技术检测电容的方法和系统公开(公告)号：US07750649B2
公开(公告)日：2010-07-06
申请号：US12404123
申请日：2009-03-13
IPC分类号： G01R27/26
CPC分类号： G01R27/2605 , G01D5/24 , G06F3/0383 , G06F3/044 , H03J9/00 , H03K17/955 , H03K17/962 , H03K17/9622 , H03K2217/960725 , H03K2217/960775
摘要： Methods, systems and devices are described for detecting a measurable capacitance using charge transfer techniques. According to various embodiments, a charge transfer process is performed for two or more times. During the charge transfer process, a pre-determined voltage is applied to the measurable capacitance, and the measurable capacitance is then allowed to share charge with a filter capacitance through a passive impedance that remains coupled to both the measurable capacitance and to the filter capacitance throughout the charge transfer process. The value of the measurable capacitance can then be determined as a function of a representation of a charge on the filter capacitance and the number of times that the charge transfer process was performed. Such a detection scheme may be readily implemented using conventional components, and can be particularly useful in sensing the position of a finger, stylus or other object with respect to an input sensor.
摘要翻译： 描述了使用电荷转移技术检测可测量电容的方法，系统和装置。 根据各种实施方式，电荷转移处理进行2次以上。 在电荷转移过程中，将预定电压施加到可测量电容，然后允许可测量的电容通过被动阻抗与滤波电容共享电荷，该被动阻抗保持与可测量的电容和整个滤波电容耦合 电荷转移过程。 可测量电容的值可以根据滤波电容上的电荷的表示和电荷转移过程的次数来确定。 这种检测方案可以使用常规部件容易地实现，并且可以特别有用于感测手指，触针或其他物体相对于输入传感器的位置。
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