Reduction of Noise Spikes in Touch Screen Systems by Low Pass Spatial Filtering
Accepted version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Gao, S
McLean, D
Lai, J
Micou, C
Nathan, A
Abstract
This paper reports on a low-pass spatial filtering technique for reduction of noise spikes in capacitive touch screen panels. Filter bandwidth is adjusted by dynamically evaluating attenuation of signal and noise spikes. Based on the experimental results, we boost the signal-to-noise ratio by 15.6 dB and attenuate noise spikes by 19.25 dB. The processed signal yields higher detection accuracy and lower power consumption.
Description
Keywords
capacitance touch screen panels (TSPs), low-pass spatial filtering, noise spike reduction and signal attenuation
Journal Title
Journal of Display Technology
Conference Name
Journal ISSN
1551-319X
1558-9323
1558-9323
Volume Title
12
Publisher
IEEE