公开(公告)号：US09239643B2

公开(公告)日：2016-01-19

申请号：US14045905

申请日：2013-10-04

Applicant: STMicroelectronics S.r.l.

Inventor： Nunziata Ivana Guarneri ,  Alessandro Capra ,  Sebastiano Battiato ,  Giovanni Maria Farinella ,  Francesco Cristaldi

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0416 ,  G06F2203/04104

Abstract: An embodiment of a method of recognizing finger detection data in a detection data map produced by a touch screen includes converting the data from the x, y, z space into a three-descriptor space including: a first coordinate representative of the number of intensity peaks in the map, a second coordinate representative of the number of nodes (i.e., pixels) absorbed under one or more of the intensity peaks. A third coordinate may be selected as the angular coefficient or slope of a piecewise-linear approximating function passing through points having the numbers of nodes absorbed under the intensity peaks ordered in decreasing order over said intensity peaks, which permits singling out finger data with respect to non-finger data over the whole of the touch screen. The third coordinate may be also selected as an adjacency value representative of the extent the intensity peaks are adjacent to one another, which permits singling out finger data produced over a portion of the touch screen with respect to non-finger data produced over another portion of the touch screen.

Abstract translation: 在由触摸屏产生的检测数据图中识别手指检测数据的方法的实施例包括将来自x，y，z空间的数据转换为三描述符空间，包括：表示强度峰值数量的第一坐标 在地图中，表示在一个或多个强度峰值下吸收的节点数（即，像素）的第二坐标。 可以选择第三坐标作为通过具有在所述强度峰值之下以降序排列的强度峰值下吸收的节点数的点的分段线性近似函数的角度系数或斜率，这允许相对于 整个触摸屏上的非手指数据。 也可以选择第三坐标作为代表强度峰值彼此相邻的程度的相邻值，这允许在触摸屏的一部分上产生的手指数据相对于在另一部分上产生的非手指数据 触摸屏。