公开(公告)号：WO2013115710A3

公开(公告)日：2013-10-31

申请号：PCT/SE2013050064

申请日：2013-01-29

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  BJOERKLUND ANDREAS ,  WALLANDER MATS PETTER ,  OHLSSON NICKLAS

IPC: G06F3/042

CPC classification number: G06F3/0418 ,  G06F3/042 ,  G06F3/0421 ,  G06F3/0428 ,  G06F3/047 ,  G06F2203/04109

Abstract: Touch sensitivity is enabled using a touch system that comprises a panel configured to conduct signals, e.g. by TIR, along detection lines across a touch surface. A signal processor operates in a sequence of repetitions to: generate (70, 71) data samples that represent detected signal energy on the actual detection lines; generate (72, 74) based on the data samples, an interpolated sinogram comprising interpolation samples that represent fictitious detection lines which have a desired location on the touch surface; and reconstruct (75) a signal interaction pattern for the touch surface based on the interpolated sinogram. The signal processor implements an error correction (73) to counteract the influence of a change in validity status for a data sample among the data samples, by identifying interpolation samples affected by the change in validity status, and by setting each identified interpolation sample to a value that maintains a relative signal transmission of the fictitious detection line from a former repetition.

Abstract translation: 使用包括配置为传导信号的面板的触摸系统启用触摸灵敏度，例如， 通过TIR，沿触摸表面的检测线。 信号处理器以重复序列操作以：产生（70,71）数据样本，其表示实际检测线上的检测到的信号能量; 基于所述数据样本生成（72,74）包括内插样本的内插正弦图，所述内插样本表示在所述触摸表面上具有期望位置的虚构检测线; 并且基于内插正弦图重建（75）用于触摸表面的信号交互模式。 信号处理器通过识别受有效性状态变化影响的插值样本，并通过将每个识别的插值样本设置为一个值来实现纠正（73）以抵消数据样本之间的数据样本的有效性状态变化的影响 保持来自前一次重复的虚拟检测线的相对信号传输的值。

公开(公告)号：WO2012158105A2

公开(公告)日：2012-11-22

申请号：PCT/SE2012050509

申请日：2012-05-14

Applicant: FLATFROG LAB AB ,  CHRISTIANSSON TOMAS ,  JUHLIN PETER ,  WALLANDER MATS PETTER ,  WASSVIK OLA

Inventor： CHRISTIANSSON TOMAS ,  JUHLIN PETER ,  WALLANDER MATS PETTER ,  WASSVIK OLA

IPC: G06F3/042

CPC classification number: G06F3/041 ,  G06F3/0418 ,  G06F3/0421 ,  G06F2203/04109

Abstract: A device for processing data from a touch sensitive apparatus is provided. The apparatus comprises a light transmitting panel with a touch surface and an opposed back surface; an illumination arrangement configured to introduce light into the panel for propagation by internal reflection between the touch surface and the back surface; a light detection arrangement configured to receive the light after propagation in the panel. A processor unit in the device operates to: obtain (S4) a monitored signal which is functionally dependent on transmitted light detected by the light detection arrangement; reconstruct (S5), based on the monitored signal,a two-dimensional attenuation field representing an attenuation of the transmitted light on the touch surface; calculate (S6) an expected monitored signal based on the reconstructed attenuation field;and compare (S7) the expected monitored signal with the monitored signal in order to determine a reduced performance of the apparatus.

Abstract translation: 提供了一种用于处理来自触敏设备的数据的设备。 该装置包括具有触摸表面和相对的后表面的透光面板; 照明装置，被配置为将光引入所述面板，以通过所述触摸表面和所述后表面之间的内部反射进行传播; 光检测装置，被配置为在面板中传播之后接收光。 设备中的处理器单元操作以：获得（S4）在功能上取决于由光检测装置检测到的透射光的监视信号; 基于所监视的信号重建（S5）二维衰减场，其表示所述触摸表面上的透射光的衰减; 基于重建的衰减场计算（S6）预期监视信号;以及将所预期的监视信号与所监视的信号进行比较（S7），以便确定设备性能的降低。

公开(公告)号：WO2013126005A3

公开(公告)日：2013-12-19

申请号：PCT/SE2013050137

申请日：2013-02-19

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  OHLSSON NICKLAS

IPC: G06F3/041

CPC classification number: G06F3/0421 ,  G06F3/0418 ,  G06F2203/04104 ,  G06F2203/04109

Abstract: Touch sensitivity is enabled using a touch system that comprises a panel configured to conduct signals, e.g. by TIR, along detection lines across a touch surface. A signal processor operates to obtain (52) observed values for the detection lines, and identify (54C) an interaction pattern on the touch surface as a solution to an optimization function that comprises an aggregation of differences, for each detection line, between the observed value and a projected value, which is given by a projection function that defines a functional relation between the interaction pattern and the projected value for each detection line. The signal processor implements a normalization to ensure that the interaction pattern indicates weak touches even in the presence of strong touches. The normalization involves computing (54A) a respective normalization value for each of the differences as a function of the observed value for the respective detection line; and applying (54B) the respective normalization value so as to normalize the respective difference in the optimization function.

Abstract translation: 使用包括配置为传导信号的面板的触摸系统启用触摸灵敏度，例如， 通过TIR，沿触摸表面的检测线。 信号处理器操作以获得（52）针对检测线的观测值，并且识别（54C）触摸表面上的交互图案作为优化函数的解决方案，该优化函数包括针对每个检测线的观察 值和投影值，其由投影函数给出，该投影函数定义交互图案和每条检测线的投影值之间的函数关系。 信号处理器执行归一化以确保交互模式即使在强烈触摸的情况下也表示弱触摸。 归一化涉及作为相应检测线的观测值的函数计算（54A）每个差值的相应归一化值; 并且应用（54B）相应的归一化值以便归一化优化函数中的相应差异。

公开(公告)号：WO2010006883A3

公开(公告)日：2010-12-02

申请号：PCT/EP2009057724

申请日：2009-06-22

Applicant: FLATFROG LAB AB ,  CHRISTIANSSON TOMAS ,  WASSVIK OLA ,  BRYBORN MATTIAS

Inventor： CHRISTIANSSON TOMAS ,  WASSVIK OLA ,  BRYBORN MATTIAS

IPC: G06F3/042

CPC classification number: G06F3/0421 ,  G06F3/0423 ,  G06F2203/04109

Abstract: A device operates on output signals (S1, S2) from a light sensor arrangement in a touch-sensing apparatus to determine a position of an object (6) on a touch surface (4). The apparatus includes a light transmissive panel (1) that defines the touch surface (4) and an opposite surface. A light source arrangement provides sheets of light inside the panel (1), wherein each sheet comprises light that propagates by internal reflection between the touch surface (4) and the opposite surface from one or more incoupling points to a set of outcoupling points. The light sensor arrangement generates the output signals (S1, S2), which represent light reaching the outcoupling points. The apparatus is configured such that an object (6) touching the touch surface (4) locally attenuates at least two sheets of light. To determine the position, the device identifies, in the output signals (S1, S2), a set of signal profiles (P1a, P1b, P2a, P2b) originating from said object (6). The device determines at least part of an attenuated light path across the panel (1) based on each signal profile (P1a, P1b, P2a, P2b), and identifies the position of the object (6) on the touch surface (4) 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 (4) and the opposite surface (5).

Abstract translation: 装置对来自触敏装置中的光传感器装置的输出信号（S1，S2）进行操作以确定物体（6）在触摸表面（4）上的位置。 该设备包括限定触摸表面（4）和相对表面的透光板（1）。 光源装置在面板（1）内提供多张光，其中每张薄片包括通过在触摸表面（4）和相对表面之间从一个或多个耦合点到一组耦合点之间的内部反射传播的光。 光传感器装置产生代表到达外耦合点的光的输出信号（S1，S2）。 该装置被配置为使得触摸触摸表面（4）的物体（6）局部地衰减至少两个光片。 为了确定位置，设备在输出信号（S1，S2）中识别源自所述对象（6）的一组信号轮廓（P1a，P1b，P2a，P2b）。 该装置基于每个信号轮廓（P1a，P1b，P2a，P2b）确定横跨面板（1）的衰减光路径的至少一部分，并基于触摸表面（4）识别物体（6）的位置 在这样确定的衰减光路上。 在确定衰减光路时，该装置施加预定宽度函数，该预定宽度函数表示由于触摸表面（4）和相对表面（4）中的至少一个引起的光散射而导致的信号轮廓宽度与到耦合点的距离的依赖性 （5）。

公开(公告)号：WO2013089622A3

公开(公告)日：2013-08-22

申请号：PCT/SE2012051368

申请日：2012-12-10

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  OHLSSON NICKLAS ,  BJOERKLUND ANDREAS

IPC: G06F3/042

CPC classification number: G06F3/044 ,  G06F3/0418 ,  G06F3/0421 ,  G06F3/04883 ,  G06F2203/04109 ,  G06F2203/04111

Abstract: A device implements a method of tracking objects on a touch surface of an FTIR based touch- sensitive apparatus. An interaction map is generated (52) that indicates local changes in interaction on the touch surface. The interaction map is processed (53) for identification of positive and negative peaks that represent a locally increased and decreased interaction in the interaction map, respectively. To suppress the impact of interferences, a dedicated first heuristic and/or second heuristic is applied (54) to identify potentially false peaks among the positive peaks. The first heuristic designates a positive peak as a potentially false peak when the positive peak is deemed to be associated with one or more of the negative peaks. The second heuristic designates a positive peak as a potentially false peak when the positive peak is deemed to be located along one of the movement trajectories. Movement trajectories of all objects deemed to exist on the touch surface at a preceding time point are then updated (56) while taking the potentially false peaks into account.

Abstract translation: 设备实现了在基于FTIR的触敏设备的触摸表面上追踪对象的方法。 生成指示触摸表面上的交互的本地改变的交互图（52）。 处理相互作用图（53）以分别识别表示交互作用图中局部增加和减少的相互作用的正峰值和负峰值。 为了抑制干扰的影响，应用专用的第一启发式和/或第二启发式（54）来识别正峰值之间的潜在假峰。 当正峰值被认为与一个或多个负峰值相关时，第一种启发式将正峰值指定为潜在的错误峰值。 当正峰值被认为是沿着一个移动轨迹定位时，第二启发式将正峰值指定为潜在的错误峰值。 然后更新（56）在先前时间点处认为存在于触摸表面上的所有对象的移动轨迹，同时考虑潜在的错误峰值。

公开(公告)号：WO2010006886A2

公开(公告)日：2010-01-21

申请号：PCT/EP2009057731

申请日：2009-06-22

Applicant: FLATFROG LAB AB ,  WASSVIK OLA ,  CHRISTIANSSON TOMAS ,  BRYBORN MATTIAS

Inventor： WASSVIK OLA ,  CHRISTIANSSON TOMAS ,  BRYBORN MATTIAS

IPC: G06F3/042

CPC classification number: G06F3/0421 ,  G06F3/0423 ,  G06F2203/04109

Abstract: An apparatus is operated to determine a location of at least one object (O1) on a touch surface of a light transmissive panel (1). An illumination arrangement in the apparatus is operated to introduce beams (B1, B2) of radiation into the panel (1) for propagation by internal reflection between the touch surface and the opposite surface, and to sweep each beam (B1, B2) along the touch surface within a sensing area. Thereby, the sensing area is illuminated such that an object (O1) 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 (B1, B2), downstream of the sensing area, is swept along one or more elongate outcoupling sites on the panel (1). At least one light sensor (9A, 9B), which is optically coupled to the outcoupling site, is operated to measure the received energy of the beam (B1, B2) within the outcoupling site. A data processor (7) is operated to obtain, from the light sensor (9A, 9B), an output signal (S1, S2) indicative of the received energy of the beam (B1, B2) within the outcoupling site as a function of time, and to identify, based on the output signals (S1, S2) for the different beams (B1, B2), the location of the object.

Abstract translation: 操作装置来确定在透光面板（1）的触摸表面上的至少一个物体（O1）的位置。 操作该装置中的照明装置以将辐射束（B1，B2）引入面板（1）中，以通过在触摸表面和相对表面之间的内部反射进行传播，并且沿着该扫描方向扫描每个光束（B1，B2） 感测区域内的触摸表面。 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（O1）使得至少两个光束被暂时衰减。 照明装置被布置成使得在感测区域下游的每个光束（B1，B2）沿面板（1）上的一个或多个细长的外耦合位置扫过。 操作光学耦合到外耦合位置的至少一个光传感器（9A，9B），以测量外耦合位置内的束（B1，B2）的接收能量。 操作数据处理器（7）以从光传感器（9A，9B）获得表示外耦合位置内的接收能量（B1，B2）的接收能量的输出信号（S1，S2），作为 时间，并且基于用于不同波束（B1，B2）的输出信号（S1，S2）来识别对象的位置。

公开(公告)号：WO2013165306A3

公开(公告)日：2014-04-03

申请号：PCT/SE2013050474

申请日：2013-04-29

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  OHLSSON NICKLAS ,  BJOERKLUND ANDREAS ,  WALLANDER MATS PETTER

IPC: G06F3/042 ,  G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0416 ,  G06F3/0421 ,  G06F2203/04104 ,  G06F2203/04109

Abstract: A signal processor implements a technique for detecting objects on a panel which transmits signals inside the panel such that the objects are allowed to interact with (e.g. attenuate) the signals by contact with a touch surface of the panel. The signal processor operates to define cells that have a given location on the touch surface and are associated with a respective set of intersecting paths for the signals across the touch surface. The signal processor operates to obtain (70) an output signal from a signal detection arrangement that measures a signal property for each path; process (71) the output signal to obtain an interaction value for each path; and determine (73-75) a touch status of a selected cell among the cells by analyzing the distribution of interaction values for at least part of the intersecting paths. The touch status indicates presence or absence of one of the objects in the selected cell.

Abstract translation: 信号处理器实现用于检测面板上的物体的技术，该面板传输面板内的信号，使得对象被允许通过与面板的触摸面接触而与信号相互作用（例如衰减）。 信号处理器操作以定义在触摸表面上具有给定位置的单元，并且与穿过触摸表面的信号的相应的相交路径集合相关联。 信号处理器操作以从信号检测装置获得（70）输出信号，该信号检测装置测量每个路径的信号特性; 处理（71）输出信号以获得每个路径的交互值; 以及通过分析所述相交路径的至少一部分的相互作用值的分布来确定（73-75）所述单元格中的所选单元格的触摸状态。 触摸状态指示所选单元格中的一个对象的存在或不存在。

公开(公告)号：WO2013089623A3

公开(公告)日：2013-09-12

申请号：PCT/SE2012051369

申请日：2012-12-10

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  OHLSSON NICKLAS ,  BJOERKLUND ANDREAS ,  WALLANDER MATS PETTER

IPC: G06F3/042

CPC classification number: G06F3/0418 ,  G06F3/0421 ,  G06F2203/04109

Abstract: 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 (50-52) an interaction pattern that indicates local changes in interaction on the touch surface, identify (53) apparent peaks in the interaction pattern, and update (54) existing movement trajectories based on the apparent peaks. An error suppression process (56) 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. It also allows the origin of the tracking problem to subside and/or the object to move away from an area on the touch surface that exhibits interferences.

Abstract translation: 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（50-52）指示触摸表面上的交互的局部变化的交互模式，识别（53）交互模式中的明显峰值，并且基于表观峰值更新（54）现有移动轨迹。 在处理视在峰值和/或现有移动轨迹的方法中至少间歇地执行误差抑制处理（56）​​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，并且导致 在该方法的一个或多个后续重复中的运动命题的评估。 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。 它还允许跟踪问题的起因使其脱离和/或物体远离显示干扰的触摸表面上的区域。

公开(公告)号：WO2013048312A3

公开(公告)日：2013-06-27

申请号：PCT/SE2012051006

申请日：2012-09-24

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  OHLSSON NICKLAS

IPC: G06F3/042

CPC classification number: G06F3/041 ,  G06F3/0421 ,  G06F2203/04109

Abstract: 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 (22) change values for the detection lines representative of signal changes between the current and a previous iteration, and operate (23) a reconstruction algorithm on the change values to determine a differential interaction pattern across the touch surface. The signal processor also operates to update (24) a tracking pattern as a function of the differential interaction pattern, and generate (25) 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 (26) of touches on the surface portion. The tracking pattern may represent accumulated interaction across the touch surface, and may either include or be at least partly compensated for the influence of contaminations on the touch surface.

Abstract translation: 使用包括配置为传导信号的面板的触摸系统启用触摸灵敏度，例如， 通过TIR从多个输入耦合点到多个输出耦合点，从而限定穿过耦合输出点和耦合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重复序列操作以：计算（22）表示当前和先前迭代之间的信号变化的检测线的变化值，并且对变化值操作（23）重建算法以确定差分 整个触摸表面的交互模式。 信号处理器还操作以根据差分交互模式更新（24）跟踪模式，并基于跟踪模式生成（25）当前偏移模式。 生成偏移模式以表示触摸表面上的当前触摸交互并被提供用于对表面部分上的触摸进行识别（26）。 跟踪图案可以表示整个触摸表面上累积的相互作用，并且可以包括或至少部分地补偿触摸表面上的污染物的影响。

公开(公告)号：WO2013055282A2

公开(公告)日：2013-04-18

申请号：PCT/SE2012051073

申请日：2012-10-08

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  WALLANDER MATS PETTER ,  JUHLIN PETER ,  JOHANSSON ANDREAS ,  WALL HENRIK ,  OHLSSON NICKLAS

IPC: G06F3/042

CPC classification number: G06F3/041 ,  G06F3/0418 ,  G06F3/0421 ,  G06F2203/04104 ,  G06F2203/04109

Abstract: Multi-touch sensitivity is enabled using a touch system that comprises a panel configured to conduct signals, e.g. by FTIR, from a plurality of incoupling points to a plurality of outcoupling points, thereby defining detection lines across the panel between pairs of incoupling and outcoupling points. A signal processor operates in a repeating sequence of iterations to obtain (50) a current signal value for each detection line, and generate (53, 53') a first interaction pattern and a second interaction pattern as a function of the current signal values, such that the first and second interaction patterns are reconstructed two-dimensional distributions of local interaction with the conducted signals across the surface portion, and represent changes in interaction on different time scales. Thereby, the movement of an object will affect how it is represented in each of the first and second interaction patterns. Touch detection may be improved by proper selection of the time scales and combined analysis (56) of the first and second interaction patterns.

Abstract translation: 使用包括被配置为传导信号的面板的触摸系统来启用多点触敏。 通过FTIR，从多个插入点到多个输出耦合点，由此限定跨耦合和输出耦合点对之间的面板上的检测线。 信号处理器以重复的迭代序列操作以获得（50）每个检测线的当前信号值，并且生成作为当前信号值的函数的第一交互模式和第二交互模式（53,53'）， 使得第一和第二相互作用模式是通过表面部分与传导信号的局部交互的重建二维分布，并且表示不同时间尺度上的交互的变化。 因此，对象的移动将影响如何在第一和第二交互模式中的每一个中表示它。 可以通过适当地选择第一和第二相互作用模式的时间尺度和组合分析（56）来改善触摸检测。