公开(公告)号：US08791921B2

公开(公告)日：2014-07-29

申请号：US13970526

申请日：2013-08-19

Applicant: Apple Inc.

Inventor： Wayne Carl Westerman

IPC: G09G5/00 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/041 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/0421 ,  G06F3/0488 ,  G06F2203/04101 ,  G06F2203/04104 ,  G06K9/00375 ,  G06T7/11

Abstract: Techniques for identifying and discriminating between different types of contacts to a multi-touch touch-screen device are described. Illustrative contact types include fingertips, thumbs, palms and cheeks. By way of example, thumb contacts may be distinguished from fingertip contacts using a patch eccentricity parameter. In addition, by non-linearly deemphasizing pixels in a touch-surface image, a reliable means of distinguishing between large objects (e.g., palms) from smaller objects (e.g., fingertips, thumbs and a stylus) is described.

Abstract translation: 描述了用于识别和区分不同类型的触点到多点触摸触摸屏设备的技术。 说明性的接触类型包括指尖，拇指，手掌和脸颊。 作为示例，拇指触点可以使用贴片偏心参数与指尖触点区分开。 此外，通过非线性去加重触摸表面图像中的像素，描述了从较小对象（例如，指尖，拇指和触控笔）区分大对象（例如，手掌）的可靠手段。

公开(公告)号：US08542210B2

公开(公告)日：2013-09-24

申请号：US13769045

申请日：2013-02-15

Applicant: Apple Inc.

Inventor： Wayne Carl Westerman

IPC: G06F3/041 ,  G09G5/00

CPC classification number: G06F3/044 ,  G06F3/0418 ,  G06K9/00375

Abstract: Techniques for identifying and discriminating between different input patterns to a multi-touch touch-screen device are described. By way of example, large objects hovering a short distance from the touch-surface (e.g., a cheek, thigh or chest) may be identified and distinguished from physical contacts to the surface. In addition, rough contacts due to, for example, ears and earlobes, may be similarly identified and distinguished from contacts due to fingers, thumbs, palms and finger clasps.