Fast filtering algorithm for zigzag noise of touch tracking of capacitive touch panels
LI Jupeng
ZHANG Zucheng
YANG Jiashuo
FAN Lei
Abstract：Capacitive Touch Panels(CTP) have become the mainstream of human-computer interaction interface in intelligent terminal.Generally,zigzag noise of touch tracking caused by voidage distribution of screen eletrode makes impact on the accuracy of predictions of touch positions.A fast smooth processing algorithm for capacitive touch panels based on IMAF filter model has been proposed in this paper.Non-linear filter model applicable to zigzag pulse interference of touch tracking has been established on the basis of characteristic and genetic analysis of zigzag noise of original touch tracking in touch panels.Temporal serial trajectory data is processed by a first-in first-out fast iterative method so as to achieve the smooth processing of touch tracking of capacitive touch panels.Experimental results have indicated that this proposed algorithm has the capacity of linear and statistical filter processing.Compared with traditional filtering algorithm of touch tracking,this proposed algorithm can achieve effective smooth processing for zigzag noise of touch tracking.
Keywords：signal processingcapacitive touch panelzigzag noiseIMAF modelsmooth trajectory
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 37-42 )