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：EP2791763A4

公开(公告)日：2015-08-05

申请号：EP12857303

申请日：2012-12-10

Applicant: FLATFROG LAB AB

Inventor： CHRISTIANSSON TOMAS ,  OHLSSON NICKLAS ,  BJÖRKLUND 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.

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