公开(公告)号：US4177579A

公开(公告)日：1979-12-11

申请号：US889683

申请日：1978-03-24

申请人： David L. Peters ,  Arthur P. Schnitzer ,  John R. Trzeciak ,  Brain J. Woycechowsky

发明人： David L. Peters ,  Arthur P. Schnitzer ,  John R. Trzeciak ,  Brain J. Woycechowsky

IPC分类号： G09B9/08 ,  G09B9/02 ,  G09B9/05 ,  G09B9/06 ,  G09B9/30

CPC分类号： G09B9/301 ,  G09B9/302

摘要： A simulated view on a viewing surface of a raster scan television display of a changeable illuminated area located on a plane surface is provided. The source of illumination is a cone of light whose apex can be located at any distance from an eyepoint and the plane surface and whose conical surface intersects the plane surface creating the illuminated area. Electronic components determine when a line of sight from the eyepoint through the viewing surface intersects the illuminated area. For each line of sight intersection point lying within the illuminated area, a corresponding illumination is created on the viewing surface.

摘要翻译： 提供了位于平面上的可变照明区域的光栅扫描电视显示器的观察表面上的模拟视图。 照明源是一个圆锥体，其顶点可以位于距离眼点和平面表面的任何距离处，并且其锥形表面与平面相交，形成照明区域。 电子元件确定从眼睛通过观察表面的视线与照明区域相交时。 对于位于照明区域内的每个视线交叉点，在观察表面上产生相应的照明。