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http://dx.doi.org/10.9717/kmms.2015.18.3.401

Study on Elimination of EMI in ELF-Band for EPS-Based Smart TV Control  

Jang, Jin-Soo (Dept. of Electronics and Computer Engineering, Chonnam National University)
Kim, Young-Chul (Dept. of Electronics and Computer Engineering, Chonnam National University)
Publication Information
Journal of Korea Multimedia Society / v.18, no.3, 2015 , pp. 401-407 More about this Journal
Abstract
In this paper, we propose the method to eliminate EMI (Electro-Magnetic Interference) in ELF (Extremely Low Frequency) band below 2 KHz for extending the gesture-recognition distance of smart TVs to more than 3m using electric potential sensor. First, we measure the electric field generated from the back panel of a TV and propose the effective arrangement of two sets of differential sensors as well as the shielding method using metal fiber. Also, we eliminate the PLN (Power Line Noise) and other noise generated from the TV and sensors as well as surrounding environments using filters. Using the proposed EMI eliminating methods, we evaluate displacement ratio on measured signals according to distance between sensors and a moving hand. Experiment results show that our proposed method can extend the hand-gesture sensing distance using EPS (Electric Potential Sensor) up to more than 3m, which is enough to satisfy applicability of EPS based remote control to Smart TVs.
Keywords
EPS; Smart device; ELF; EMI; Kalman Filter;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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