公开(公告)号：US08982084B2

公开(公告)日：2015-03-17

申请号：US14004323

申请日：2012-12-10

申请人： Tomas Christiansson ,  Nicklas Ohlsson ,  Andreas Bjorklund ,  Mats Petter Wallander

发明人： Tomas Christiansson ,  Nicklas Ohlsson ,  Andreas Bjorklund ,  Mats Petter Wallander

IPC分类号： G06F3/041 ,  G06F3/042

CPC分类号： G06F3/0418 ,  G06F3/0421 ,  G06F2203/04109

摘要： A device implements a method of tracking objects on a touch surface of an FTIR based touch-sensitive apparatus. The method repeatedly operates to generate an interaction pattern that indicates local changes in interaction on the touch surface, identify apparent peaks in the interaction pattern, and update existing movement trajectories based on the apparent peaks. An error suppression process is executed at least intermittently in the method to process the apparent peaks and/or the existing movement trajectories to identify implicated trajectories with a potential tracking problem, define two or more movement propositions for each implicated trajectory, and cause an evaluation of the movement propositions in one or more subsequent repetitions of the method. The error suppression process improves tracking by postponing the final decision on how to track the object of the implicated trajectory until more information is available.

摘要翻译： 设备实现了在基于FTIR的触敏设备的触摸表面上跟踪对象的方法。 该方法重复操作以产生指示触摸表面上的交互的局部变化的交互模式，识别交互模式中的明显峰值，并且基于表观峰值来更新现有移动轨迹。 至少在方法中执行误差抑制过程以处理表观峰值和/或现有移动轨迹以识别具有潜在跟踪问题的牵连轨迹，为每个牵连轨迹定义两个或更多个运动命题，并且引起对 在该方法的一个或多个后续重复中的运动命题。 误差抑制过程通过延迟关于如何跟踪牵连轨迹的对象的最终决定来改进跟踪，直到有更多信息可用。

公开(公告)号：US08890843B2

公开(公告)日：2014-11-18

申请号：US12737018

申请日：2009-06-22

申请人： Ola Wassvik ,  Tomas Christiansson

发明人： Ola Wassvik ,  Tomas Christiansson

IPC分类号： G09G5/00 ,  G06F3/041 ,  G06F3/042 ,  G06K11/06 ,  G08C21/00 ,  G01B11/24 ,  G01B11/04 ,  G02B26/08 ,  G02B26/10 ,  G02B26/12

CPC分类号： G06F3/0423 ,  G06F2203/04109

摘要： An apparatus is operated to determine the location of at least one object on a touch surface of a light transmissive panel. In the apparatus, an illumination arrangement introduces radiation into the panel for propagation by internal reflection between the touch surface and the opposite surface, so as to generate a grid of intersecting radiation paths in a sensing area, and a detection arrangement measures the transmitted energy in the radiation paths. A data processor then determines, based on the transmitted energy, the location based on an attenuation of two or more radiation paths caused by the object touching the touch surface within the sensing area. In the apparatus, the illumination arrangement generates at least a subset of the radiation paths by sweeping at least one beam of radiation along the touch surface. The detection arrangement comprises a fixed re-directing device which receives and re-directs the beam onto a common detection point while the beam is swept along the touch surface, and a radiation detector which is located at the common detection point to measure the energy of the beam(s).

摘要翻译： 操作装置来确定至少一个物体在透光面板的触摸表面上的位置。 在该装置中，照明装置将辐射引入到面板中，用于通过触摸表面和相对表面之间的内部反射传播，以便在感测区域中产生相交的辐射路径的网格，并且检测装置测量传输的能量 辐射路径。 然后，数据处理器基于所发送的能量，基于由接触感测区域内的触摸表面的对象引起的两个或更多个辐射路径的衰减，确定位置。 在该装置中，照明装置通过沿着触摸表面扫掠至少一束辐射来产生至少一个辐射路径的子集。 检测装置包括固定的重定向装置，其在沿着触摸表面扫描光束时将光束接收并重新定向到公共检测点;以及放射线检测器，其位于公共检测点以测量能量 梁（s）。

公开(公告)号：US20130342490A1

公开(公告)日：2013-12-26

申请号：US14002859

申请日：2012-03-06

申请人： Mats Petter Wallander ,  Tomas Christiansson ,  Henrik Wall

发明人： Mats Petter Wallander ,  Tomas Christiansson ,  Henrik Wall

IPC分类号： G06F3/041

CPC分类号： G06F3/0416 ,  G06F3/0418 ,  G06F3/042 ,  G06F2203/04808

摘要： A multi-touch system includes a panel for conducting signals, e.g. by FTIR, from incoupling points to outcoupling points, to define detection lines across the panel. A signal processor operates in a repeating sequence of iterations to obtain an output signal from a detector coupled to the outcoupling points and generate a formatted signal value for each detection line, and operate a reconstruction algorithm on the formatted signal values to determine an interaction pattern on the panel. The signal processor also, at least intermittently in the sequence of iterations, operates compensation data on the formatted signal values to compensate for contaminations on the panel, and calculates updated compensation data based on an interference pattern determined as a function of the interaction pattern, the interference pattern being a 2D representation of contamination-induced signal interferences. The influence of contaminations in the interaction pattern is thereby suppressed.

摘要翻译： 多点触摸系统包括用于传导信号的面板。 通过FTIR，从插入点到外耦合点，定义整个面板上的检测线。 信号处理器以重复的迭代序列操作以从耦合到输出耦合点的检测器获得输出信号，并为每个检测线生成格式化的信号值，并对格式化的信号值操作重建算法以确定在 面板。 信号处理器至少在迭代次序中间歇地操作格式化信号值上的补偿数据以补偿面板上的污染，并且基于作为交互模式的函数确定的干涉图案来计算更新的补偿数据， 干扰模式是污染引起的信号干扰的二维表示。 从而抑制了相互作用图案中污染物的影响。

公开(公告)号：US20110090176A1

公开(公告)日：2011-04-21

申请号：US12737016

申请日：2009-06-22

申请人： Tomas Christiansson ,  Ola Wassvik ,  Mattias Bryborn

发明人： Tomas Christiansson ,  Ola Wassvik ,  Mattias Bryborn

IPC分类号： G06F3/042

CPC分类号： G06F3/0421 ,  G06F3/0423 ,  G06F2203/04109

摘要： A device operates on output signals from a light sensor arrangement in a touch-sensing apparatus to determine a position of an object on a touch surface. The apparatus includes a light transmissive panel that defines the touch surface and an opposite surface. A light source arrangement provides sheets of light inside the panel, wherein each sheet comprises light that propagates by internal reflection between the touch surface and the opposite surface from one or more incoupling points to a set of outcoupling points. The light sensor arrangement generates the output signals, which represent light reaching the outcoupling points. The apparatus is configured such that an object touching the touch surface locally attenuates at least two sheets of light. To determine the position, the device identifies, in the output signals, a set of signal profiles originating from said object. The device determines at least part of an attenuated light path across the panel based on each signal profile, and identifies the position of the object on the touch surface based on the thus-determined attenuated light paths. In determining the attenuated light path, the device applies a predetermined width function which is representative of a dependence of signal profile width on distance to the incoupling point due to light scattering caused by at least one of the touch surface and the opposite surface.

摘要翻译： 设备对来自触摸感测设备中的光传感器装置的输出信号进行操作以确定物体在触摸表面上的位置。 该装置包括限定触摸表面和相对表面的透光面板。 光源装置在面板内部提供光束，其中每个片材包括通过在一个或多个插入点之间的内部反射而在接触表面和相对表面之间传播到一组外耦合点的光。 光传感器装置产生输出信号，其表示到达输出耦合点的光。 该装置被配置为使得接触触摸表面的物体局部衰减至少两张光。 为了确定位置，设备在输出信号中识别源自所述对象的一组信号轮廓。 该装置基于每个信号轮廓确定穿过面板的衰减光路的至少一部分，并且基于由此确定的衰减光路识别对象在触摸表面上的位置。 在确定衰减的光路时，该装置施加预定的宽度函数，其表示由于由至少一个触摸表面和相对表面引起的光散射，信号轮廓宽度与到耦合点的距离的依赖性。

公开(公告)号：US08860696B2

公开(公告)日：2014-10-14

申请号：US12998611

申请日：2009-11-12

申请人： Ola Wassvik ,  Tomas Christiansson

发明人： Ola Wassvik ,  Tomas Christiansson

IPC分类号： G09G5/00 ,  G06F3/042 ,  G06F3/041 ,  G06K11/06 ,  G08C21/00 ,  G02F1/1333 ,  G02B6/42

CPC分类号： G06F3/042 ,  G02B6/429 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/0428 ,  G06F2203/04109

摘要： An integrated touch-sensing display is operated to detect the location of one or more objects on a touch surface. The integrated touch-sensing display defines a display area. A light guide (14) is arranged over the display area to define the touch surface (16). The light guide (14) is illuminated internally such that an object (20) contacting the touch surface (16) causes part of the illuminating light to be scattered towards the display area. An array of light sensors (6) is integrated within the display area to detect the scattered light. Based on output signals from the light sensors (6), a processing element obtains image data that represents the light that impinges on the display area excluding ambient light, and determines the location of the object (20) on the touch surface (16). Ambient light may be suppressed by a spectral passband filter in front of each light sensor (6), and/or by electronic filtering of the output signals from the sensors (6). The light guide (14) may be illuminated by invisible light, and may be arranged to cause an illuminating beam to be internally reflected at a peripheral edge surface of the light guide (14), so as to increase the intensity of illuminating light inside the light guide (14).

摘要翻译： 操作集成的触摸感测显示器以检测触摸表面上的一个或多个对象的位置。 集成的触摸感应显示器定义显示区域。 导光板（14）布置在显示区域上以限定触摸表面（16）。 导光体（14）内部被照亮，使得与触摸面（16）接触的物体（20）使部分照明光朝向显示区域散射。 一组光传感器（6）集成在显示区域内，以检测散射光。 基于来自光传感器（6）的输出信号，处理元件获得表示除了环境光之外的显示区域上照射的光的图像数据，并且确定物体（20）在触摸表面（16）上的位置。 可以通过每个光传感器（6）前方的光谱通带滤光器和/或通过电子滤波来自传感器（6）的输出信号来抑制环境光。 光导（14）可以被不可见光照射，并且可以被布置成使得照明光束在光导（14）的周边边缘表面内部被反射，从而增加光导 光导（14）。

公开(公告)号：US08780066B2

公开(公告)日：2014-07-15

申请号：US13695505

申请日：2011-04-28

申请人： Tomas Christiansson ,  Peter Juhlin

发明人： Tomas Christiansson ,  Peter Juhlin

IPC分类号： G06F3/041 ,  G06F3/042

CPC分类号： G06F3/0421 ,  G06F3/042 ,  G06F2203/04104 ,  G06F2203/04109

摘要： A touch-sensitive apparatus comprises a panel configured to conduct signals from a plurality of peripheral incoupling points to a plurality of peripheral outcoupling points. Actual detection lines are defined between pairs of incoupling and outcoupling points to extend across a surface portion of the panel. The signals may be in the form of light, and objects touching the surface portion may affect the light via frustrated total internal reflection (FTIR). A signal generator is coupled to the incoupling points to generate the signals, and a signal detector is coupled to the outcoupling points to generate an output signal. A data processor operates on the output signal to enable identification of touching objects. The output signal is processed (40) to generate a set of data samples, which are indicative of detected energy for at least a subset of the actual detection lines. The set of data samples is processed (42) to generate a set of matched samples, which are indicative of estimated detected energy for fictitious detection lines that have a location on the surface portion that matches a standard geometry for tomographic reconstruction. The set of matched samples is processed (44, 46) by tomographic reconstruction to generate data indicative of a distribution of an energy-related parameter within at least part of the surface portion.

摘要翻译： 触敏设备包括面板，其被配置为将信号从多个外围耦合点传导到多个外围输出耦合点。 实际检测线在成对的耦合和输出耦合点之间定义，以跨越面板的表面部分延伸。 信号可以是光的形式，并且接触表面部分的物体可能通过沮丧的全内反射（FTIR）影响光。 信号发生器耦合到耦合点以产生信号，并且信号检测器耦合到输出耦合点以产生输出信号。 数据处理器对输出信号进行操作，以便识别触摸物体。 输出信号被处理（40）以产生一组数据样本，其指示对于实际检测线的至少一个子集的检测能量。 对该组数据样本进行处理（42）以生成一组匹配的样本，其指示对于具有与用于层析成像重建的标准几何形状匹配的表面部分上的位置的虚拟检测线的估计检测能量。 通过断层摄影重建处理（44,46）所述匹配样本集合，以产生指示所述表面部分的至少部分内的能量相关参数的分布的数据。

公开(公告)号：US20140002400A1

公开(公告)日：2014-01-02

申请号：US14004316

申请日：2012-09-24

申请人： Tomas CHRISTIANSSON ,  Nicklas OHLSSON

发明人： Tomas CHRISTIANSSON ,  Nicklas OHLSSON

IPC分类号： G06F3/041

CPC分类号： G06F3/041 ,  G06F3/0421 ,  G06F2203/04109

摘要： Touch sensitivity is enabled using a touch system that comprises a panel configured to conduct signals, e.g. by TIR, from a plurality of incoupling points to a plurality of outcoupling points, thereby defining detection lines across a touch surface between pairs of incoupling and outcoupling points. A signal processor operates in a repeating sequence of iterations to: calculate change values for the detection lines representative of signal changes between the current and a previous iteration, and operate a reconstruction algorithm on the change values to determine a differential interaction pattern across the touch surface. The signal processor also operates to update a tracking pattern as a function of the differential interaction pattern, and generate a current offset pattern based on the tracking pattern. The offset pattern is generated to represent current touch interaction on the touch surface and is supplied for identification of touches on the surface portion.

摘要翻译： 使用包括被配置为传导信号的面板的触摸系统来启用触敏。 通过TIR，从多个插入点到多个输出耦合点，从而限定跨越耦合和输出耦合点对之间的触摸表面的检测线。 信号处理器以重复的迭代次序操作，以：计算表示当前迭代和前一次迭代之间的信号变化的检测线的变化值，并对该变化值操作重建算法，以确定跨触摸表面的差分相互作用模式 。 信号处理器还用于根据差分交互模式来更新跟踪模式，并且基于跟踪模式生成当前偏移模式。 生成偏移图案以表示触摸表面上的当前触摸交互，并且被提供用于识别表面部分上的触摸。

公开(公告)号：US20120169672A1

公开(公告)日：2012-07-05

申请号：US13395254

申请日：2010-09-09

申请人： Tomas Christiansson

发明人： Tomas Christiansson

IPC分类号： G06F3/042

CPC分类号： G06F3/0421 ,  G06F2203/04109

摘要： An apparatus for determining a location of at least one object on a touch surface, comprising: a light transmissive panel defining the touch surface and including a controllable reflective boundary; an illumination arrangement configured to introduce light into the panel; a control device configured to selectively control the reflective boundary such that the light may pass between a first layer and a second layer via an opening in the reflective boundary; a light detection arrangement configured to measure the light passed via the opening and impinged on the touch surface; and a processor unit configured to determine the location as a function of the measured light passed via the opening and the selective control of the reflective boundary. A method and computer readable medium is also described.

摘要翻译： 一种用于确定触摸表面上的至少一个物体的位置的装置，包括：限定所述触摸表面并包括可控反射边界的透光板; 配置为将光引入所述面板的照明装置; 控制装置，被配置为选择性地控制反射边界，使得光可以经由反射边界中的开口在第一层和第二层之间通过; 光检测装置，被配置为测量经由所述开口通过并撞击在所述触摸表面上的光; 以及处理器单元，其被配置为根据经由所述开口传递的所测量的光和所述反射边界的选择性控制来确定所述位置。 还描述了一种方法和计算机可读介质。

公开(公告)号：US20110163996A1

公开(公告)日：2011-07-07

申请号：US12737017

申请日：2009-06-22

申请人： Ola Wassvik ,  Tomas Christiansson ,  Mattias Bryborn

发明人： Ola Wassvik ,  Tomas Christiansson ,  Mattias Bryborn

IPC分类号： G06F3/042

CPC分类号： G06F3/0421 ,  G06F3/0423 ,  G06F2203/04109

摘要： An apparatus is operated to determine a location of at least one object on a touch surface of a light transmissive panel. An illumination arrangement in the apparatus is operated to introduce beams of radiation into the panel for propagation by internal reflection between the touch surface and the opposite surface, and to sweep each beam along the touch surface within a sensing area. Thereby, the sensing area is illuminated such that an object that touches the touch surface within the sensing area causes at least two beams to be temporarily attenuated. The illumination arrangement is arranged such that each beam, downstream of the sensing area, is swept along one or more elongate outcoupling sites on the panel. At least one light sensor, which is optically coupled to the outcoupling site, is operated to measure the received energy of the beam within the outcoupling site. A data processor is operated to obtain, from the light sensor, an output signal indicative of the received energy of the beam within the outcoupling site as a function of time, and to identify, based on the output signals for the different beams, the location of the object.

摘要翻译： 操作装置以确定至少一个物体在透光面板的触摸表面上的位置。 操作该装置中的照明装置以将辐射束引入面板，以通过触摸表面和相对表面之间的内部反射进行传播，并且在感测区域内沿着触摸表面扫掠每个光束。 因此，感测区域被照亮使得接触感测区域内的触摸表面的物体导致至少两个光束被暂时衰减。 照明布置被布置成使得在感测区域的下游的每个光束沿着面板上的一个或多个细长的外耦合位置扫过。 光耦合到外耦合位置的至少一个光传感器被操作以测量输出耦合位置内的光束的接收能量。 操作数据处理器以从光传感器获得表示作为时间的函数的输出耦合位置内的波束的接收能量的输出信号，并且基于不同波束的输出信号来识别位置 的对象。

公开(公告)号：US20110074735A1

公开(公告)日：2011-03-31

申请号：US12737020

申请日：2009-06-22

申请人： Ola Wassvik ,  Tomas Christiansson

发明人： Ola Wassvik ,  Tomas Christiansson

IPC分类号： G06F3/042

CPC分类号： G06F3/0421 ,  G06F3/0423 ,  G06F2203/04109

摘要： An apparatus is controlled to detect locations of a plurality of objects on a touch surface of a panel. An input scanner arrangement introduces at least three beams of radiation into the panel for propagation by internal reflection, and sweeps the beams inside the panel across a sensing area, preferably in at least two different principal directions. At least one radiation detector is arranged to receive the beams from the input scanner arrangement while they are swept across the sensing area. A data processor is connected to the radiation detector(s) and operated to identify the locations based on an attenuation of the beams caused by the objects touching the touch surface within the sensing area, the attenuation being identifiable from an output signal of the radiation detector(s). Each output signal may be further processed to generate a transmission signal, by dividing the output signal by a background signal which represents the output signal without any object on the touch surface.

摘要翻译： 控制装置以检测面板的触摸表面上的多个物体的位置。 输入扫描器装置将至少三束辐射引入到面板中，以通过内部反射进行传播，并且将扫过面板内的光束穿过感测区域，优选地在至少两个不同的主方向上扫描。 至少一个辐射检测器布置成在扫描器扫描器横过感测区域时接收来自输入扫描器装置的光束。 数据处理器连接到辐射探测器并且被操作以基于由感测区域内触摸触摸表面的物体引起的光束的衰减来识别位置，该衰减可从辐射探测器的输出信号识别 （s）。 可以通过将输出信号除以表示输出信号的背景信号而在接触表面上没有任何物体来进一步处理每个输出信号以产生发送信号。