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논문 기본 정보

자료유형
학술저널
저자정보
Ji-Ho Kim (Chungbuk National University) Dong-Min Won (Chungbuk National University) HyungWon Kim (Chungbuk National University)
저널정보
한국정보통신학회JICCE Journal of information and communication convergence engineering Journal of information and communication convergence engineering Vol.14 No.2
발행연도
2016.6
수록면
106 - 114 (9page)

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초록· 키워드

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Differential sensing methods are more effective in alleviating panel noise than single-line sensing, and thus have been increasingly used in the touch screen industry. However, they have a drawback: they tend to cancel out multiple touches and need touch position recovery algorithms. This paper introduces a novel algorithm of touch position recovery for differential sensing, which is a low-complexity but high-accuracy approach for determining multiple touch positions. We have implemented the proposed method in a touch screen controller system on a chip. In the simulation experiments using realistic touch screen models and a differential sensing circuit, the algorithm exhibited a high detection performance of a signal-tonoise ratio gain of up to 52.21 dB. Therefore, we can conclude that the proposed method is substantially more accurate than the previous method. Further, the proposed method incurs little or no overhead in terms of the detection speed and the chip size.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. EXISTING TOUCH SCREEN SENSING METHODS
Ⅲ. PROPOSED ALGORITHM
Ⅳ. EXPERIMENTAL RESULTS
Ⅴ. CONCLUSION
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