公开(公告)号：US5136156A

公开(公告)日：1992-08-04

申请号：US624464

申请日：1990-12-10

申请人： Michiyasu Nounen ,  Kouichi Taketoshi ,  Yoshihiro Uragata

发明人： Michiyasu Nounen ,  Kouichi Taketoshi ,  Yoshihiro Uragata

IPC分类号： G06F3/033 ,  G06F3/042

CPC分类号： G06F3/0421

摘要： An improved photoelectric switching device for coordinate detection system comprises a first array of light emitting elements, a first array of photo-detecting elements for receiving the light from the first array of light emitting elements and producing a first block signal when the light is blocked by a stylus, such as a finger, a second array of light emitting elements, a second array of photo-detecting elements for receiving the light from the second array of light emitting elements and producing a second block signal when the light is blocked by the stylus wherein the light receiving surfaces of the second array of photo-detecting elements are aligned an angle, such as 180 degrees, with respect to those of the first array of photo-detecting elements, and a control means such as a microcomputer for driving the first and the second array of the light emitting elements and for discriminating the coordinates of the stylus on the display unit which displays a pattern having several regions allocated for certain control of optional equipment. Therefore, the stylus can be detected even if there is an inadvertent operation in either of the first and the second photo-detecting elements due to a strong incidence of ambient light in the lateral direction.

摘要翻译： 用于坐标检测系统的改进的光电开关装置包括第一阵列的发光元件，第一阵列的光检测元件，用于接收来自第一阵列的发光元件的光，并且当光被 诸如手指的触针，第二发光元件阵列，用于接收来自第二阵列的发光元件的光的第二阵列的光检测元件，并且当光被触针阻挡时产生第二阻挡信号 其中所述第二光电检测元件阵列的光接收表面相对于所述第一光检测元件阵列的角度对齐为180度;以及控制装置，例如用于驱动所述第一 和发光元件的第二阵列，并且用于鉴别显示单元上的触针的坐标，该显示单元显示具有多个reg 分配用于某些可选设备控制的离子。 因此，即使在第一和第二光检测元件中的任何一个中由于在横向上的环境光的强烈入射而存在无意中的操作，也可以检测触针。