发明名称 |
TOUCH SCREEN INPUT SYSTEM |
摘要 |
A touch screen input system (10) for use with a display screen (12) having a photo-active display surface including a controllable sweeping beam. The system includes at least one photo-detector (20) in combination with detection circuitry for continuously registering the position of the beam in the display surface. A pointer (26) is adapted to reflect light from the beam to the photo-detector to provide a latch signal which is used to hold a signal identifying display screen location corresponding to pointer means location. |
申请公布号 |
US4733022(A) |
申请公布日期 |
1988.03.22 |
申请号 |
US19860816065 |
申请日期 |
1986.01.03 |
申请人 |
WALES, R. LANGDON;CROWLEY, H. W. |
发明人 |
WALES, R. LANGDON;CROWLEY, H. W. |
分类号 |
G06F3/033;G06F3/037;G06F3/042;G08C21/00;(IPC1-7):G08C21/00 |
主分类号 |
G06F3/033 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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