公开(公告)号：EP2628068A4

公开(公告)日：2014-02-26

申请号：EP11832837

申请日：2011-10-07

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  WALLANDER MATS PETTER ,  JUHLIN PETER

IPC: G06F3/042

CPC classification number: G06F3/041 ,  G06F3/0428 ,  G06F2203/04109

公开(公告)号：EP2845081A4

公开(公告)日：2015-12-16

申请号：EP13784581

申请日：2013-04-29

Applicant: FLATFROG LAB AB

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

IPC: G06F3/042 ,  G06F3/041

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

公开(公告)号：EP2823382A4

公开(公告)日：2015-10-21

申请号：EP13757203

申请日：2013-03-07

Applicant: FLATFROG LAB AB

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

IPC: G06F3/042 ,  G06F3/041 ,  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 at grid points in a regular grid in a Fourier domain; and operate a two-dimensional inverse Fourier transform on the interpolated Fourier coefficients so as to generate an interaction pattern for the touch surface. The interpolated Fourier coefficients 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 ore lines of symmetry 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; 处理用于在傅立叶域中的规则网格中的网格点处产生内插傅里叶系数的数据样本; 并对内插的傅里叶系数进行二维傅里叶逆变换，以生成触摸面的相互作用图案。 对于各个网格点组，依次生成内插傅里叶系数。 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。 在正常网格中通过对称线对齐的网格点。 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：EP2810146A4

公开(公告)日：2015-09-16

申请号：EP13744212

申请日：2013-01-29

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  BJÖRKLUND 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 data samples that represent detected signal energy on the actual detection lines; generate 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 a signal interaction pattern for the touch surface based on the interpolated sinogram. The signal processor implements an error correction 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: 使用触摸系统启用触摸灵敏度，该触摸系统包括被配置为沿着触摸表面的检测线传导信号的面板。 信号处理器以重复序列操作，以产生表示实际检测线上检测到的信号能量的数据样本; 基于所述数据样本生成内插正弦图，其包括表示在所述触摸表面上具有期望位置的虚拟检测线的插值样本; 并且基于插值的正弦图来重建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维持的值，来实现纠错以抵消数据样本中数据样本的有效性状态变化的影响 虚拟检测线从前者重复的相对信号传输。

公开(公告)号：EP2795437A4

公开(公告)日：2015-07-15

申请号：EP12860074

申请日：2012-12-18

Applicant: FLATFROG LAB AB

Inventor： WALLANDER MATS PETTER ,  JUHLIN PETER ,  KRUS MATTIAS

IPC: G06F3/042 ,  G06F3/041

CPC classification number: G06F3/0421 ,  G06F3/0412 ,  G06F3/0418 ,  G06F2203/04109

Abstract: A device implements a data processing method for an optical FTIR-based touch system. The touch system defines detection lines across a surface portion of a panel by propagating light inside the panel from a plurality of incoupling points to a plurality of outcoupling points, such that each location on the surface portion is illuminated by incident light rays. At least one light detector is coupled to the outcoupling points to generate an output signal. The device obtains signal values for the detection lines from the output signal and processes the signal values to at least partly compensate for variations in the apparent interaction among the subset of detection lines that interact with an object on the surface portion.

公开(公告)号：EP2673697A4

公开(公告)日：2014-07-02

申请号：EP12857555

申请日：2012-12-10

Applicant: FLATFROG LAB AB

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

IPC: G06F3/042 ,  G06F3/041

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