公开(公告)号：WO2010006884A3

公开(公告)日：2010-11-25

申请号：PCT/EP2009057725

申请日：2009-06-22

Applicant: FLATFROG LAB AB ,  WASSVIK OLA ,  CHRISTIANSSON TOMAS

Inventor： WASSVIK OLA ,  CHRISTIANSSON TOMAS

IPC: G06F3/042

CPC classification number: G06F3/0423 ,  G06F2203/04109

Abstract: An apparatus is operated to determine the location of at least one object on a touch surface of a light transmissive panel (1). In the apparatus, an illumination arrangement introduces radiation into the panel (1) 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 (8) then determines, based on the transmitted energy, the location based on an attenuation of two or more radiation paths caused by the object (01) 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 (B1, B2) of radiation along the touch surface. The detection arrangement comprises a fixed re-directing device (12A, 12B) which receives and re-directs the beam (B1, B2) onto a common detection point (D1, D2) while the beam (B1, B2) is swept along the touch surface, and a radiation detector (RD1, RD2) which is located at the common detection point (D1, D2) to measure the energy of the beam(s) (B1, B2).

Abstract translation: 操作设备以确定透光板（1）的触摸表面上的至少一个物体的位置。 在该设备中，照明装置将辐射引入到面板（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，从而在感测区域中生成相交的辐射路径的栅格，并且检测装置测量 在辐射路径中传输能量。 然后数据处理器（8）基于传输的能量基于由物体（01）触摸感测区域内的触摸表面引起的两个或更多个辐射路径的衰减来确定位置。 在该设备中，照明装置通过沿着触摸表面扫描至少一个辐射束（B1，B2）来产生辐射路径的至少一个子集。 该检测装置包括一个固定的重定向装置（12A，12B），该装置在光束（B1，B2）沿着该光束（B1，B2）被扫过时接收光束（B1，B2）并将其重定向到公共检测点 触摸表面以及位于公共检测点（D1，D2）处的辐射检测器（RD1，RD2）以测量光束（B1，B2）的能量。

公开(公告)号：WO2010064983A3

公开(公告)日：2010-08-05

申请号：PCT/SE2009051364

申请日：2009-12-02

Applicant: FLATFROG LAB AB ,  FAAHRAEUS CHRISTER ,  WALL HENRIK ,  WASSVIK OLA ,  CHRISTIANSSON TOMAS

Inventor： FAAHRAEUS CHRISTER ,  WALL HENRIK ,  WASSVIK OLA ,  CHRISTIANSSON TOMAS

IPC: G06F3/042

CPC classification number: G06F3/0325 ,  G06F3/0421 ,  G06F3/0428 ,  G06F2203/04104 ,  G06F2203/04109

Abstract: A touch sensing apparatus is controlled to determine the position of one or more objects (7) that interact with a touch surface (1). The apparatus includes a group of emitters (2) arranged to emit light to illuminate at least part of the touch surface (1), a light detector (4) arranged to receive light from the group of emitters (2), and a processing element (7). Each emitter (2) is controlled to transmit a code by way of the emitted light such that the code identifies the respective emitter (2). The codes may at least partly be transmitted concurrently. The codes may be selected such that a value of an autocorrelation of each code is significantly higher than a value of a cross-correlation between any two codes of different emitters (2). The processing element processes an output signal from the light detector (4) to separate the light received from the individual emitters (2) based on the transmitted codes, and to determine the position of the object/objects (7) based on the light received from the individual emitters (2), e.g. using triangulation or image reconstruction such as an algorithm for transmission tomography.

Abstract translation: 控制触摸感测装置以确定与触摸表面（1）相互作用的一个或多个物体（7）的位置。 该设备包括：一组发射器（2），被布置为发射光以照亮触摸表面（1）的至少一部分;光检测器（4），被布置为接收来自该组发射器（2）的光;以及处理元件 （7）。 控制每个发射器（2）通过发射的光传输代码，使得代码识别相应的发射器（2）。 代码可以至少部分地同时传输。 代码可以被选择为使得每个代码的自相关值明显高于不同发射器（2）的任何两个代码之间的互相关的值。 处理元件处理来自光检测器（4）的输出信号，以基于所发送的代码分离从各个发射器（2）接收的光，并且基于所接收的光来确定物体/物体（7）的位置 来自各个发射器（2），例如， 使用三角测量或图像重建，例如透射层析成像算法。

公开(公告)号：EP2491480A4

公开(公告)日：2014-07-30

申请号：EP10825283

申请日：2010-10-13

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  BRYBORN KRUS MATTIAS ,  WASSVIK OLA ,  FÅHRAEUS CHRISTER ,  WALL HENRIK

IPC: G06F3/042 ,  G06F3/041

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

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。

公开(公告)号：WO2013062471A3

公开(公告)日：2013-06-20

申请号：PCT/SE2012051142

申请日：2012-10-24

Applicant: FLATFROG LAB AB

Inventor： OHLSSON NICKLAS ,  JUHLIN PETER ,  CHRISTIANSSON TOMAS

IPC: G06F3/042

CPC classification number: G06F3/042 ,  G06F2203/04109

Abstract: In a touch-sensitive apparatus, a panel conducts signals, e.g. light, on actual detection lines that extend across a surface portion of the panel between pairs of incoupling and outcoupling points. Objects touching the surface portion attenuate the transmitted signals. A data processor processes (40) an output signal from a detector coupled to the outcoupling points, to generate a set of data samples indicative of detected energy for the actual detection lines. The set of data samples is further processed (42) to generate a set of matched samples indicative of estimated detected energy for fictitious detection lines that extend across the surface portion in parallel groups at a plurality of different angles. The individual spacing between the fictitious detection lines in each group and the individual difference in angle between said groups are selected such that the set of matched samples transforms to Fourier coefficients arranged as data points on a pseudo-polar grid in a Fourier domain. The set of matched samples is processed (44) by tomographic reconstruction to generate a two-dimensional distribution of an interaction parameter within the surface portion.

Abstract translation: 在触敏装置中，面板传导信号，例如， 在实际的检测线上，这些实际的检测线在成对的入耦合点和出耦合点之间延伸穿过面板的表面部分。 接触表面部分的物体衰减传输的信号。 数据处理器处理（40）来自耦合到输出耦合点的检测器的输出信号，以产生指示实际检测线的检测能量的一组数据样本。 该数据样本组被进一步处理（42）以产生一组匹配的样本，该组匹配的样本指示针对虚拟检测线的估计检测能量，所述虚拟检测线在多个不同角度处以平行群组的表面部分延伸。 每个组中假想检测线之间的单独间距和所述组之间角度上的个体差异被选择为使得该组匹配样本变换成在傅立叶域中伪平面网格上布置为数据点的傅立叶系数。 通过层析重建处理（44）匹配样本集合以生成表面部分内的相互作用参数的二维分布。

公开(公告)号：WO2010006882A3

公开(公告)日：2010-04-15

申请号：PCT/EP2009057723

申请日：2009-06-22

Applicant: FLATFROG LAB AB ,  WASSVIK OLA ,  CHRISTIANSSON TOMAS

Inventor： WASSVIK OLA ,  CHRISTIANSSON TOMAS

IPC: G06F3/042

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

Abstract: An apparatus is controlled to detect locations of a plurality of objects on a touch surface of a panel (1). An input scanner arrangement introduces at least three beams (B1- B6) of radiation into the panel (1) for propagation by internal reflection, and sweeps the beams (B1-B6) inside the panel across a sensing area, preferably in at least two different principal directions (R1, R2). At least one radiation detector is arranged to receive the beams (B1-B6) 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 (B1-B6) 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.

Abstract translation: 控制装置以检测面板（1）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个辐射束（B1-B6）引入到面板（1）中以通过内部反射传播，并且将扫描板内的光束（B1-B6）扫过感测区域，优选地在至少两个 不同的主方向（R1，R2）。 至少一个辐射检测器被布置成当它们被扫过感测区域时从输入扫描器装置接收光束（B1-B6）。 数据处理器连接到辐射检测器，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（B1-B6）的衰减来识别位置，该衰减可从输出 辐射探测器的信号。 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。

公开(公告)号：AU2010308594A1

公开(公告)日：2012-04-26

申请号：AU2010308594

申请日：2010-10-13

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS

IPC: G06F3/042

Abstract: A touch-sensing apparatus is based on frustrated total internal reflection (FTIR). The apparatus comprises a panel, in which sheets of light are propagated by internal reflection between a touch surface and an opposite surface. A light sensor arrangement is optically connected to the panel to measure transmitted light energy on detection lines across the touch surface. Each detection line represents a light path across the touch surface from a light source to a light sensor. An object that touches the touch surface will frustrate the propagating light and cause a local attenuation among the detection lines. A data processor is connected to the light sensor arrangement and configured to execute a process for extracting touch-related data. In the process, an output vector is generated to contain signal values indicative of light received by the light sensor arrangement on a set of detection lines (step 52), and a two-dimensional attenuation field on the touch surface is represented by one or more two-dimensional basis functions. Each basis function defines an attenuation strength within its two-dimensional extent. The process reconstructs the attenuation field from the output vector (step 54), based on a mapping of the set of detection lines to each basis function. In the reconstruction, an estimated attenuation field is calculated by optimizing at least one of the attenuation strength and the location of each basis function such that the estimated attenuation field yields the output vector. The estimated attenuation field is then processed for extraction of the touch-related data (step 56).

公开(公告)号：AU2010290148A1

公开(公告)日：2012-03-15

申请号：AU2010290148

申请日：2010-09-01

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  WASSVIK OLA

IPC: G06F3/042

Abstract: A touch-sensitive system comprises a light transmissive panel (1) defining a touch surface and an opposite surface; an illumination arrangement (3) comprising emitters (2) configured to introduce light into the panel (1) for propagation in the panel (1) in an emission pattern; a light detection arrangement (5) comprising detectors (4) configured to receive the light propagating in the panel (1). A control unit (6) is arranged to control the operation of the touch-sensitive system. The control unit (6) executes a control method to monitor the light received in the light detecting arrangement (5) for detection of touches on the touch surface, the touches attenuating the light propagating in the panel (1). The control method also selects a mode for the emission pattern in dependence of the occurrence of touches on the touch surface and controls the emission pattern in accordance with the selected mode.

公开(公告)号：CA2778154A1

公开(公告)日：2011-04-28

申请号：CA2778154

申请日：2010-10-13

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  BRYBORN MATTIAS

IPC: G06F3/042

Abstract: A touch-sensing apparatus comprises a light transmissive panel, in which sheets of light are propagated by internal reflection between a touch surface and an opposite surface from an incoupling site to an outcoupling site. The touch-sensing apparatus is configured such that objects touching the touch surface cause a local attenuation of at least two sheets of light. A light sensor arrangement is optically connected to the outcoupling site to measure transmitted light energy. A data processor is connected to the light sensor arrangement and configured to execute a touch determination process. The process operates on at least oneprojection signal which is indicative of a spatial distribution of light within the outcoupling site. In the process, the projection signal(s) is/are processed for identification of signal profiles representing the attenuation (step 202). The signal profiles are used for identifying one or more candidate touch areas on the touch surface (step 1206´). The projection signal(s) is/are then processed to reconstruct a two-dimensional distribution of signal values locally within the one or more 1 candidate touch areas (step 1207), whereupon touch data for the or each object is determined by processing the reconstructed signal values within the candidate touch areas (step 1208).