Title :
Digital processing of touch signal - error probability
Author :
Milivojevic, Zoran N. ; Mirkovic, Milena ; Stefanovic, Margareta
Author_Institution :
Ei Televizija, Nis, Yugoslavia
Abstract :
A new algorithm for digital processing of a touch signal is proposed. We consider the calculation of the error probability in the process of deciding on the existence of the optical infrared beam between the infrared transmitter and receiver. The error probability is calculated in the function of: (a) the ambient illumination simulated by the reflector placed a certain distance in front of the center of the touch interface; (b) window functions implemented in the algorithm for processing of the touch signal. The error probability is calculated for some classical, time-symmetrical as well as for some original, time-asymmetrical window functions.
Keywords :
error statistics; optical information processing; touch sensitive screens; ambient illumination; digital processing; error probability; infrared receiver; infrared transmitter; optical infrared beam; time-asymmetrical window functions; time-symmetrical window functions; touch interface; touch signal; Acoustic beams; Cathodes; Computer displays; Error probability; Lighting; Optical beams; Optical receivers; Optical sensors; Optical transmitters; Signal processing;
Conference_Titel :
EUROCON'2001, Trends in Communications, International Conference on.
Conference_Location :
Bratislava, Slovakia
Print_ISBN :
0-7803-6490-2
DOI :
10.1109/EURCON.2001.938165
