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：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：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：WO2013165305A3

公开(公告)日：2014-03-20

申请号：PCT/SE2013050473

申请日：2013-04-29

Applicant: FLATFROG LAB AB

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

IPC: G06F3/042 ,  G06F3/041

CPC classification number: 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 (90) an output signal from a signal detection arrangement that measures a signal property for each path; process (91) the output signal to obtain an interaction value for each path; and generate (93-95') a cell value of a selected cell among the cells as either a robust measure of central tendency (e.g. a median) or a minimum/maximum among the interaction values for the intersecting paths. The signal processor determines (97) presence or absence of an object in the selected cell based on the cell value.

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。 信号处理器操作以获得（90）来自测量每个路径的信号特性的信号检测装置的输出信号; 处理（91）输出信号以获得每个路径的交互值; 并且将所述单元格中的所选单元格的单元格值（93-95'）作为所述相交路径的交互值中的中心趋势（例如中值）或最小/最大值的鲁棒测量值生成（93-95'）。 信号处理器基于单元值确定（97）所选单元中的对象的存在或不存在。

公开(公告)号：WO2013133757A3

公开(公告)日：2013-12-19

申请号：PCT/SE2013050198

申请日：2013-03-07

Applicant: FLATFROG LAB AB

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

IPC: G06F3/042 ,  G06F17/14

CPC classification number: G06F3/046 ,  G06F3/0416 ,  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, along detection lines across a touch surface. A signal processor operates to generate data samples indicative of transmitted signal energy on parallel detection lines at a number of different angles across the touch surface; process the data samples for generation of interpolated Fourier coefficients (f) at grid points in a regular grid in a Fourier domain; and operate a two-dimensional inverse Fourier transform on the interpolated Fourier coefficients (f) so as to generate an interaction pattern for the touch surface. The interpolated Fourier coefficients (f) are generated sequentially for individual groups of grid points. Each individual group comprises grid points that have equal distance to an origin in the regular grid, e.g. grid points that are mapped onto each other by one or more lines of symmetry (L1-L4) in the regular grid. The group-based processing may improve processing speed and/or reduce the need for data storage.

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触敏。 通过TIR，沿着穿过触摸表面的检测线。 信号处理器操作以在穿过触摸表面的多个不同角度上产生指示平行检测线上发送的信号能量的数据样本; 处理用于在傅里叶域中的规则网格中的网格点处生成内插傅里叶系数（f）的数据样本; 并对内插傅立叶系数（f）进行二维傅里叶逆变换，以生成触摸面的相互作用图案。 内插傅立叶系数（f）是针对各个网格点的顺序生成的。 每个单独的组包括与规则网格中的原点具有相等距离的网格点，例如。 在普通网格中通过一个或多个对称线（L1-L4）彼此映射的网格点。 基于组的处理可以提高处理速度和/或减少对数据存储的需要。