PUCs: detecting transparent, passive untouched capacitive widgets on unmodified multi-touch displays
PUCs: detecting transparent, passive untouched capacitive widgets on unmodified multi-touch displays
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PUC：在未修改的多点触控显示器上检测透明、无源、未触摸的电容式小部件
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发表时间：
2013
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通讯作者：
Jan O. Borchers
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作者：
Simon Voelker;Kosuke Nakajima;Christian Thoresen;Yuichi Itoh;Kjell Ivar Øvergård;Jan O. Borchers
电容式多点触控显示器的设计并不是为了检测放置在其上的被动物体，事实上，这些系统通常包含过滤器来主动拒绝此类触摸数据。本文对该问题进行了技术分析，并介绍了无源非接触式电容器件（PUCs）。与以前的方法不同，PUCs不需要电源，它们可以完全透明，即使没有用户触摸它们也可以可靠地检测到，并且它们不需要对触摸显示器或其驱动器进行内部电气或软件修改。我们展示了在17种不同的现成电容触摸显示模型上测试pu的结果，并提供了初步的技术设计建议。
Capacitive multi-touch displays are not designed to detect passive objects placed on them-in fact, these systems usually contain filters to actively reject such touch data. We present a technical analysis of this problem and introduce Passive Untouched Capacitive Widgets (PUCs). Unlike previous approaches, PUCs do not require power, they can be made entirely transparent, they are detected reliably even when no user is touching them, and they do not require internal electrical or software modifications of the touch display or its driver. We show the results from testing PUCs on 17 different off-the-shelf capacitive touch display models, and provide initial technical design recommendations.