A surface acoustic wave touchscreen-type device using two transducers
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Date
2008
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Abstract
Current wireless human-computer interaction devices such as wireless mice and touchscreens, by and large, incorporate a sophisticated electronic architecture. The sophistication achieves wireless capabilities but carries over a cost overhead. In this paper we lay the foundation for developing a novel human-computer interaction device with reduced hardware sophistication. We developed a surface acoustic wave touchscreen-type device using only two transducers, as opposed to, typically, three or more transducers in conventional surface acoustic wave touchscreens. The transducers are mounted on a glass surface and connected into the line-in of a stereo sound card. User-initiated taps are detected, analysed and located on the surface, and the mouse cursor is moved to the computed screen location.
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Keywords
Surface acoustic wave, Touchscreen, Transducer
Citation
Ghaziasgar, M. and Connan, J. (2008) A surface acoustic wave touchscreen-type device using two transducers. Proc. Southern Africa Telecommunication Networks and Applications Conference (SATNAC 2008), Wild Coast Sun, South Africa, 121-126