Title:
METHOD AND APPARATUS FOR SENSING A PLURALITY OF CONTACT INPUTS
Document Type and Number:
WIPO Patent Application WO/2012/008751
Kind Code:
A2
Abstract:
The present invention relates to a method for sensing contact inputs in a contact input sensing apparatus comprising a sensing electrode. The method for sensing contact inputs comprises: a first step of enabling an input terminal of the sensing electrode to supply a driving signal for a first time period so as to obtain a sensed signal; a second step of enabling the input terminal of the sensing electrode to supply a driving signal for a second time period so as to obtain a sensed signal; and a third step of determining the location of the contact input based on the difference between the sensed signal obtained in the first step and the sensed signal obtained in the second step, wherein the first time period and the second time period are different from each other. The coordinates of the contact inputs can thereby be accurately determined even when two or more contact inputs are applied.
Inventors:
NAM, Sung Sik (Melfas, Inc. #812-814 Star Valley, 60-11,Gasan-dong, Geumcheon-gu, Seoul 153-777, 153-777, KR)
Application Number:
KR2011/005153
Publication Date:
January 19, 2012
Filing Date:
July 13, 2011
Export Citation:
Assignee:
MELFAS, INC. (#812-814 Star Valley, 60-11Gasan-dong, Geumcheon-gu, Seoul 153-777, 153-777, KR)
(주)멜파스 (서울시 금천구 가산동 60-11 스타밸리 812-814, 153-777 Seoul, 153-777, KR)
(주)멜파스 (서울시 금천구 가산동 60-11 스타밸리 812-814, 153-777 Seoul, 153-777, KR)
International Classes:
G06F3/041
Attorney, Agent or Firm:
FIRSTLAW LEE & KO (Trust Tower, 275-7Yangjae-dong, Seocho-ku, Seoul 137-739, 137-739, KR)
Claims:
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