File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

김재준

Kim, Jae Joon
Circuits & Systems Design Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Algorithm for improving snr using high voltage and differential manchester code for capacitive touch screen panel

Author(s)
Ma, HyunggunHeo, SanghyunKim, Jae JoonBien, Franklin
Issued Date
2014-11
DOI
10.1049/el.2014.2269
URI
https://scholarworks.unist.ac.kr/handle/201301/9542
Fulltext
http://digital-library.theiet.org/content/journals/10.1049/el.2014.2269
Citation
ELECTRONICS LETTERS, v.50, no.24, pp.1813 - 1815
Abstract
An algorithm for a capacitive touch screen panel that can make the sum of the signal into '0' for the use of high voltage is presented. The differential Manchester code is combined with the Walsh-Hadamard code to generate an input coded signal. Owing to the property of the differential Manchester code, the Moore-Penrose pseudoinverse matrix is employed to decode-mutual capacitance from the received signal. As only the variation between the un-touch and touch condition is detected at the receiver, a high-voltage input coded signal is used. Unlike a normal touch system, the decoded sensing capacitance in the proposed algorithm does not have an absolute value. Positive decoded capacitance is the un-touch condition and negative decoded capacitance is the touch condition. The simulated signal-to-noise ratio (SNR) of the proposed algorithm is 27.9 dB, which is 8.26 dB higher than SNR in not return to zero (NRZ).
Publisher
INST ENGINEERING TECHNOLOGY-IET
ISSN
0013-5194

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.