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In this paper we propose a novel detection algorithm that delivers impressive savings in the sensing time of the capacitive touchscreen systems using sequential energy detection methods. We also show that these savings can translate into a significant boost to the operational battery life of today's mobile devices. We provide numerical analysis of sequential energy detection scheme, and the average...
This paper presents a new efficient detection method on capacitive touch screens by mixing multi-channel inputs and expanding the sensing bandwidth. Multi-channel touch signals can be combined with a modulation scheme which allows an overlap in spectral domain. By expanding the sensing bandwidth, the overlapped region can be minimized which leads to more accurate detection. The touch-detection problem...
This paper presents a novel, power efficient and low-latency method for detecting touch locations on capacitive touch screens. In capacitive touch screens, only a few touch sensors experience detectable change corresponding to the touch locations. We show that power consumption can be reduced by monitoring fewer number of samples than the standard method to sense changes in capacitances and their...
This paper presents a novel touch detection scheme on a capacitive touch screen with reduced sensing latency and low power consumption. We make use of the fact that a small number of touch sensors have appreciable changes in their capacitance values corresponding to the touch locations; this enables reduction in energy consumption via sensing fewer number of measurements compared to the standard approach...
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