Abstract
Touch-based interactivity has become an important function in
displays. This paper reports on the signal processing of touch signals
in which touch interactivity is processed as an image, and correlated
double sampling (CDS) algorithm is applied for both common-mode noise
reduction and global multivalued offset cancellation. Based on experimental
results, we achieved a boost in SNR of 7.6 dB. The processed
signal reduces detection errors and power consumption of the system.
© 2016 OAPA
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