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Maximizing responsiveness of touch sensing via charge multiplexing in touchscreen devices


Abstract:

This paper presents a novel touch sensing scheme for capacitive touchscreen devices that is capable of maximizing the responsiveness of touch sensing, thereby enabling th...Show More

Abstract:

This paper presents a novel touch sensing scheme for capacitive touchscreen devices that is capable of maximizing the responsiveness of touch sensing, thereby enabling the realization of high-speed/resolution touchscreens. The heart of our proposed scheme is to measure various combinations of channels of the touchscreen in a way to preserve orthogonality among channels, and to detect the presence of touch by decomposing the measurements into orthogonal components. After designing the measurement and detection algorithms in detail, we demonstrate via simulation that our proposed scheme indeed works.
Published in: IEEE Transactions on Consumer Electronics ( Volume: 56, Issue: 3, August 2010)
Page(s): 1905 - 1910
Date of Publication: 28 October 2010

ISSN Information:


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