Title :
Application of 4k-order Hadamard matrices to simultaneous driving capacitive touch systems
Author :
Jong Kang Park ; Chang-Ju Lee ; Do-Yeon Kim ; Jung-Hoon Chun ; Jong Tae Kim
Author_Institution :
Coll. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea
Abstract :
In recent years, simultaneous driving and sensing techniques for capacitive sensors have used to obtain high signal-to-noise ratio for given time limit of the touch system. In this paper, we show more effective utilization of design constraints of touch system by the use of the variants of 4k-order orthogonal codes. It is also possible to ease the specification of input stages of receivers in capacitive touch controllers.
Keywords :
Hadamard matrices; capacitance measurement; capacitive sensors; orthogonal codes; tactile sensors; 4k-order Hadamard matrices; 4k-order orthogonal code; capacitive sensor; capacitive touch controller; capacitive touch system; sensing technique; signalto-noise ratio; Capacitive sensors; Error correction; Error correction codes; Receivers; Signal to noise ratio; Vectors;
Conference_Titel :
Consumer Electronics (ICCE), 2015 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4799-7542-6
DOI :
10.1109/ICCE.2015.7066527
