发明名称 Interactive display system
摘要 A method for identifying a bounded area of a graphic display. The method uses the division of the display screen into nine areas then the central square is the correlation window. This window can be small, two or three pel width, or large if the application is seeking to identify a larger area. The point indicated by the operator is in the center of the correlation window. An object (bounded area) which intersects this square will register a bit. It can be seen that a bounded area will intersect the correlation window if either: (a) any part of the boundary actually passes through the window, or (b) any arbitrary point within the window is inside the area.
申请公布号 US4814755(A) 申请公布日期 1989.03.21
申请号 US19870082978 申请日期 1987.08.04
申请人 INTERNATIONAL BUSINESS MACHINES CORPORATION 发明人 JOHNSON, PETER W.;QUARENDON, PETER
分类号 G06F3/048;G06F3/033;G06F3/14;G06T11/80;G06T17/00;G09G5/14;G09G5/42;(IPC1-7):G09G1/16 主分类号 G06F3/048
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