Touch sensing apparatus and method of operating the same
作者： Christer Fåhraeus , Henrik Wall , Tomas Christiansson , Ola Wassvik
DOI:
关键词: Processing element 、 Autocorrelation 、 Engineering 、 Signal 、 Code (cryptography) 、 Light detector 、 Common emitter 、 Optics
摘要: A touch sensing apparatus includes a group of emitters arranged to emit light illuminate at least part the surface, detector receive from emitters, and processing element. Each emitter is controlled transmit code by way emitted such that identifies respective emitter. The codes may partly be transmitted concurrently. selected value an autocorrelation each significantly higher than cross-correlation between any two different emitters. element processes output signal separate received individual based on codes, determine position object/objects
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