Title :
Pressure Sensitive Stylus and Algorithm for Touchscreen Panel
Author :
Chih-Lung Lin ; Chia-Sheng Li ; Yi-Ming Chang ; Tsung-Chih Lin ; Jiann-Fuh Chen ; U-Chen Lin
Abstract :
This work presents a new simple passive 3D stylus and its associated stroke reconstruction algorithm for capacitive touch panels that detects the x,y -directional position and z -directional strength without the help of a pressure sensor. The proposed algorithm can successfully detect touch information while eliminating noise. Moreover, unintended touch will be recognized and its effects are eliminated while the desired signal will be accessed by the touch system to enhance the handwriting experience. The results of experiments on a touch panel system were analyzed, demonstrating the effectiveness of the proposed stylus and its stroke reconstruction algorithm.
Keywords :
pressure sensors; touch sensitive screens; associated stroke reconstruction algorithm; capacitive touchscreen panel system; handwriting experience; passive 3D stylus; pressure sensitive stylus; pressure sensor; stroke reconstruction algorithm; touch information detection; unintended touch; Capacitance; Indium tin oxide; Kalman filters; Reconstruction algorithms; Sensors; Touch screens; Capacitive-type panel (CTP); pressure sensing stylus; stroke reconstruction algorithm;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2012.2220524
