公开(公告)号：USRE32633E

公开(公告)日：1988-03-29

申请号：US811635

申请日：1985-12-20

申请人： Dean Hovey ,  James Sachs ,  James Yurchenco ,  William Lapson

发明人： Dean Hovey ,  James Sachs ,  James Yurchenco ,  William Lapson

IPC分类号： G06F3/038

CPC分类号： G06F3/038 ,  G06F3/0312 ,  G06F3/03543

摘要： A cursor control device having particular application to a computer display system is disclosed. The cursor control includes a unitary frame, having a domed portion substantially surrounding and retaining a ball which is free to rotate. X-Y position indicating means are provided, such that rotation of the ball provides signals indicative of X-Y positions on the display system. The ball is free to "float" in the vertical direction within the dome, and thereby maintain good surface contact. X-Y positions are established by movement of the control device over a surface. A display system and method is disclosed for use in conjunction with the cursor control device, which permits a user to select command options simply by movement of the displayed cursor over a "pull-down" menu bar.