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Dynamic touch quarantine frames

一种触摸轨迹、触摸表面的技术，应用在基于FTIR的触摸系统领域

Inactive Publication Date: 2017-09-26
FLATFROG LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If each frame is 15ms long, and the number of isolated frames used is 10, a delay of 135ms or more may occur before a real touch is acknowledged and output by the touch system

Method used

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  • Dynamic touch quarantine frames
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Examples

Experimental program
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Embodiment Construction

[0051] Description of the embodiment

[0052] the term

[0053] Before describing embodiments of the present invention, several definitions will be given.

[0054] A "touch object" or "touching object" is a physical object that touches or brings it close enough to a touch surface to be detected by one or more sensors in the touch system. Physical objects may be animate or inanimate.

[0055] An "interaction" occurs when a touching object affects a parameter measured by the sensor.

[0056] "Interaction strength" is a relative or absolute measure of the degree of interaction. "Interaction strength" can be expressed as "decay".

[0057] An "interaction map" or "interaction pattern" is a two-dimensional (2D) distribution of interaction strength across a touch surface or a portion thereof. If the interaction is presented as a decay, the interaction graph / pattern is also denoted a "decay graph" or a "decay pattern".

[0058] "Touch" denotes an interaction point as seen in the...

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PUM

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Abstract

A touch system is described having a method of determining touch of one or more objects on a touch surface of a touch-sensitive apparatus, wherein the method operates in a time sequence of frames, each frame comprising the steps of: for a current frame, processing an output signal of the touch sensitive apparatus to generate one or more touch traces, each touch trace having one or more characteristics; and outputting a confirmed touch signal for each touch trace having a touch trace matching at least one of said one or more characteristics in a first number of frames preceding the current frame, wherein the first number of frames is determined in dependence on said one or more characteristics.

Description

technical field [0001] The present invention relates generally to improved touch determination on touch surfaces of optical touch sensing systems, and in particular to FTIR (frustrated total internal reflection) based touch systems. Background technique [0002] touch sensing system [0003] Touch sensing systems ("touch systems") are used in a wide variety of applications. Typically, a touch system is actuated by a touching object, such as a finger or a stylus, directly contacting the touch surface or by approaching (ie, not touching) the touch surface. The touch system can be used as a touchpad in a laptop computer, in an equipment control panel, and as an overlay on a display of a handheld device such as a mobile phone, for example. A touch panel overlaid on or integrated in a display is also denoted "touch screen". Many other applications are known in the art. [0004] touch type [0005] There are many known techniques for providing touch sensitivity, for example, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042G06F3/03G06F3/041G06F3/0488G06F3/04883
CPCG06F3/0421G06F2203/04109G06F3/04883G06F3/0428G06F3/04186
Inventor 尼克拉斯·奥尔松马库斯·安德里森托马斯·克里斯蒂安松安德里斯·比约克隆德马茨·彼得·沃兰德
Owner FLATFROG LAB
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