利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

18 条记录 (耗时 0.037 秒)

    Methods and systems for detecting a capacitance using sigma-delta measurement techniques
    11.
    发明授权
    Methods and systems for detecting a capacitance using sigma-delta measurement techniques 有权

    公开(公告)号：US07301350B2

    公开(公告)日：2007-11-27

    申请号：US11446324

    申请日：2006-06-03

    申请人： Kirk Hargreaves ,  Joseph Kurth Reynolds ,  David Ely ,  Julian Haines

    发明人： Kirk Hargreaves ,  Joseph Kurth Reynolds ,  David Ely ,  Julian Haines

    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.

    METHODS AND SYSTEMS FOR DETECTING A CAPACITANCE USING SIGMA-DELTA MEASUREMENT TECHNIQUES
    12.
    发明申请
    METHODS AND SYSTEMS FOR DETECTING A CAPACITANCE USING SIGMA-DELTA MEASUREMENT TECHNIQUES 有权
    用SIGMA-DELTA测量技术检测电容的方法和系统

    公开(公告)号：US20100148806A1

    公开(公告)日：2010-06-17

    申请号：US12708339

    申请日：2010-02-18

    申请人： Kirk Hargreaves ,  Joseph Kurth Reynolds ,  David Ely ,  Julian Haines

    发明人： Kirk Hargreaves ,  Joseph Kurth Reynolds ,  David Ely ,  Julian Haines

    IPC分类号： G01R27/26 ,  G01R27/00

    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。

    Methods and systems for detecting a capacitance using switched charge transfer techniques
    13.
    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：US07521941B2

    公开(公告)日：2009-04-21

    申请号：US11925496

    申请日：2007-10-26

    申请人： David Ely ,  Paul Routley ,  Joseph Kurth Reynolds ,  Julian Haines ,  Kirk Hargreaves

    发明人： David Ely ,  Paul Routley ,  Joseph Kurth Reynolds ,  Julian Haines ,  Kirk Hargreaves

    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。

    METHODS AND SYSTEMS FOR SWITCHED CHARGE TRANSFER CAPACITANCE MEASURING USING SHARED COMPONENTS
    14.
    发明申请
    METHODS AND SYSTEMS FOR SWITCHED CHARGE TRANSFER CAPACITANCE MEASURING USING SHARED COMPONENTS 有权
    使用共享组件切换电荷传输电容测量的方法和系统

    公开(公告)号：US20080116904A1

    公开(公告)日：2008-05-22

    申请号：US11925537

    申请日：2007-10-26

    申请人： Joseph Kurth Reynolds ,  Kirk Hargreaves ,  David Ely ,  Paul Routley ,  Julian Haines

    发明人： Joseph Kurth Reynolds ,  Kirk Hargreaves ,  David Ely ,  Paul Routley ,  Julian Haines

    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。

    Position sensor
    17.
    发明授权
    Position sensor 有权
    位置传感器

    公开(公告)号：US08243033B2

    公开(公告)日：2012-08-14

    申请号：US12397121

    申请日：2009-03-03

    申请人： David T. E. Ely ,  Geoffrey Foote ,  Julian Haines ,  Gareth J. McCaughan

    发明人： David T. E. Ely ,  Geoffrey Foote ,  Julian Haines ,  Gareth J. McCaughan

    IPC分类号： G06F3/041

    CPC分类号： G06F3/046 ,  G06F1/3203 ,  G06F1/3262 ,  G06F3/03545 ,  G06F3/03547 ,  G06F2203/0339

    摘要： A low-cost x-y digitizing system for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitizer windings and novel excitation and processing circuitry.

    摘要翻译： 用于消费电子设备（例如便携式数字助理，移动电话，网络浏览器等）的低成本x-y数字化系统。 该数字转换器包括一个共振触控笔，一个用于激励谐振触控笔的激励绕组和一组用于感测由触笔产生的信号的传感器绕组，由此确定触笔的x-y位置。 新颖的触控笔设计与新型数字转换器绕组和新颖的激励和处理电路一起描述。