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1. 发明授权

US4825212A Arrangement for use with a touch control system having a spherically curved touch surface 失效
标题翻译：用于具有球形弯曲的触摸表面的触摸控制系统的布置
公开(公告)号：US4825212A
公开(公告)日：1989-04-25
申请号：US931296
申请日：1986-11-14
申请人： Robert Adler , Peter C. J. Desmares
发明人： Robert Adler , Peter C. J. Desmares
IPC分类号： G06F3/033 , G09G1/16
CPC分类号： G06F3/0436
摘要： A touch control system for a cathode ray tube, or other touch-controlled device capable of recognizing touch positions along a predetermined coordinate axis on a three-dimensionally curved touch surface, includes a substrate comprising a segment of a three-dimensionally curved surface having a touch surface capable of propagating surface acoustic waves. An input surface wave transducer serves to launch a collimated beam of surface acoustic wave energy on the touch surface. If undisturbed, the beam would travel along a path that corresponds to a great circle on the curved surface. An output surface wave transducer develops an electrical output signal upon receipt of surface acoustic wave energy derived from the beam. A reflective array is provided which establishes travel of the beam of energy along a desired path on the touch surface having a contour intermediate a great circle and a parallel. The array has the property of reducing the velocity of surface acoustic wave energy configured and of sufficient density to produce within the array a wave guiding action upon the beam of acoustic wave energy along the desired path effective to confine the beam of energy to the desired path having the intermediate contour.
摘要翻译：一种用于阴极射线管或能够识别沿三维曲面的触摸表面上的预定坐标轴的触摸位置的其他触摸控制装置的触摸控制系统包括：基底，其包括具有三维曲面的三维曲面的部分，能够传播表面声波的触摸表面。输入表面波传感器用于在触摸表面上发射准直的表面声波能量束。如果不受干扰，光束将沿着对应于弯曲表面上的大圆的路径行进。输出表面波传感器在接收到从光束导出的表面声波能量时产生电输出信号。提供了一种反射阵列，其建立沿着具有中间大圆和平行的轮廓的触摸表面上的期望路径的能量束的行进。该阵列具有降低配置的表面声波能量的速度和足够的密度以在阵列内产生沿着期望路径的声波能量波的引导作用，其有效地将能量束限制到期望的路径具有中间轮廓。

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