发明名称 POSITIONING MODULE, OPTICAL TOUCH SYSTEM AND METHOD OF CALCULATING A COORDINATE OF A TOUCH MEDIUM
摘要 A method of calculating a coordinate of a touch medium is disclosed in the present invention. The method includes obtaining a first image to determine whether the first image overlaps a first threshold, generating a first interceptive boundary when the first image overlaps the first threshold, obtaining a second image to generate a second interceptive boundary by overlap of the second image and a second threshold, determining whether the first interceptive boundary overlaps the second interceptive boundary, and confirming a status of the touch medium according to determination.
申请公布号 US2014146019(A1) 申请公布日期 2014.05.29
申请号 US201314097257 申请日期 2013.12.05
申请人 PIXART IMAGING INC. 发明人 LIN YU-CHIA;LU CHUN-YI;LIN CHUN-SHENG;HUANG YU-HSIANG;CHENG HSIN-CHI
分类号 G06F3/042 主分类号 G06F3/042
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