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    • 1. 发明授权
    • Determining the location of touch points in a position detection system
    • 确定位置检测系统中触点的位置
    • US07932899B2
    • 2011-04-26
    • US12873466
    • 2010-09-01
    • John David NewtonKeith John Colson
    • John David NewtonKeith John Colson
    • G06F3/042
    • G06F3/0418G06F3/0428
    • A position detection system includes at least two optical units configured to image a space, a memory, and a processing device interfaced to the memory and the optical units. The processing device is configured to access image data from the first and second optical units and use this data to determine at least one of a current first position and a current second position representing touch points on a display. The processing device can define a polygon having at least four sides based the current first and current second positions and can access the memory to store and retrieve the polygon. If the processing device can determine only one of the current first position or the current second position based on the accessed image data, the processing device can use the previously defined polygon to estimate the other position that was not determined using the accessed image data.
    • 位置检测系统包括至少两个配置成对空间进行成像的光学单元,存储器和与存储器和光学单元接口的处理设备。 处理装置被配置为从第一和第二光学单元访问图像数据,并且使用该数据来确定表示显示器上的触摸点的当前第一位置和当前第二位置中的至少一个。 处理装置可以基于当前第一和当前第二位置来定义具有至少四边的多边形,并且可以访问存储器以存储和检索多边形。 如果处理设备可以基于所访问的图像数据仅确定当前第一位置或当前第二位置中的一个,则处理设备可以使用先前定义的多边形来估计未使用所访问的图像数据确定的另一位置。
    • 2. 发明申请
    • Determining the Location of Touch Points in a Position Detection System
    • 确定位置检测系统中触点的位置
    • US20110050649A1
    • 2011-03-03
    • US12873466
    • 2010-09-01
    • John David NewtonKeith John Colson
    • John David NewtonKeith John Colson
    • G06F3/042
    • G06F3/0418G06F3/0428
    • A position detection system includes at least two optical units configured to image a space, a memory, and a processing device interfaced to the memory and the optical units. The processing device is configured to access image data from the first and second optical units and use this data to determine at least one of a current first position and a current second position representing touch points on a display. The processing device can define a polygon having at least four sides based the current first and current second positions and can access the memory to store and retrieve the polygon. If the processing device can determine only one of the current first position or the current second position based on the accessed image data, the processing device can use the previously defined polygon to estimate the other position that was not determined using the accessed image data.
    • 位置检测系统包括至少两个配置成对空间进行成像的光学单元,存储器和与存储器和光学单元接口的处理设备。 处理装置被配置为从第一和第二光学单元访问图像数据,并且使用该数据来确定表示显示器上的触摸点的当前第一位置和当前第二位置中的至少一个。 处理装置可以基于当前第一和当前第二位置来定义具有至少四边的多边形,并且可以访问存储器以存储和检索多边形。 如果处理设备可以基于所访问的图像数据仅确定当前第一位置或当前第二位置中的一个,则处理设备可以使用先前定义的多边形来估计未使用所访问的图像数据确定的另一位置。
    • 3. 发明申请
    • Systems and Methods for Interacting With Touch Displays Using Single-Touch and Multi-Touch Gestures
    • 使用单触式和多触式手势与触摸显示器进行交互的系统和方法
    • US20100229090A1
    • 2010-09-09
    • US12717232
    • 2010-03-04
    • John David NewtonKeith John Colson
    • John David NewtonKeith John Colson
    • G06F3/048G06F3/041G06F3/042
    • G06F3/04883G06F3/0428G06F3/0488G06F2203/04808
    • Embodiments include position detection systems that can identify two touch locations mapped to positions proximate a GUI object, such as a boundary. In response to movement of one or both of the two touch locations, the GUI object can be affected, such as moving the boundary to resize a corresponding object and/or to relocate the boundary, or the GUI object can be selected without movement of the touch locations. Embodiments include single touch gestures, such as identifying a rolling, bending, or other movement occurring while a touch location remains substantially the same and interpreting the movement as an input command. Embodiments may utilize one or more optical sensors having sufficient sensitivity to recognize changes in detected light due to variations in object orientation, makeup or posture caused by the rolling, bending, and/or other movement(s).
    • 实施例包括位置检测系统,其可以识别映射到诸如边界的GUI对象附近的位置的两个触摸位置。 响应于两个触摸位置中的一个或两个的移动,GUI对象可能受到影响,例如移动边界以调整相应对象的大小和/或重新定位边界,或者可以选择GUI对象而不移动 触摸位置。 实施例包括单触手势,例如识别在触摸位置保持基本相同并且将移动解释为输入命令时发生的滚动,弯曲或其它移动。 实施例可以使用具有足够灵敏度的一个或多个光学传感器来识别由于由滚动,弯曲和/或其它移动引起的对象取向,构成或姿势的变化所检测到的光的变化。
    • 4. 发明申请
    • Systems and Methods For Resolving Multitouch Scenarios Using Software Filters
    • 使用软件过滤器解决多点触摸方案的系统和方法
    • US20090278816A1
    • 2009-11-12
    • US12434217
    • 2009-05-01
    • Keith John Colson
    • Keith John Colson
    • G06F3/042
    • G06F3/0421G06F3/0416G06F2203/04808
    • Software heuristics can be applied to determine which two points of a plurality of potential touch points are likely actual touch points based on a potential touch point's location relative to a predefined touch area and/or a characteristic of a hypothetical touch corresponding to the potential touch point. For instance, a software filter may determine if a potential touch point lies outside the touch area based on comparing coordinates of the potential touch point to boundaries of the predefined touch area. As another example, if the size of the hypothetical touch exceeds a threshold and is in a particular position (e.g., near an edge of the touch area), the potential touch point may be identified as a ghost touch point. As another example, a filter may evaluate whether a shape of the hypothetical touch exceeds a threshold for asymmetry; if so, the potential touch point may be identified as a ghost touch point.
    • 可以应用软件启发法来确定多个潜在接触点中的哪两个点可能是相对于预定义的触摸区域的潜在触摸点的位置和/或与潜在接触点相对应的假想触摸的特征可能是实际触摸点 。 例如,软件过滤器可以基于将潜在接触点的坐标与预定义的触摸区域的边界进行比较来确定潜在触摸点是否位于触摸区域之外。 作为另一示例,如果假想触摸的大小超过阈值并且处于特定位置(例如,靠近触摸区域的边缘),则潜在接触点可以被识别为幽灵触摸点。 作为另一示例,滤波器可以评估假想触摸的形状是否超过不对称的阈值; 如果是这样,潜在的触摸点可以被识别为幽灵触摸点。