发明名称 |
Floating coordinate system |
摘要 |
Apparatus for determining the position of a cursor with respect to a floating coordinate system, such as a menu. The floating menu incorporates two sensing devices similar to that in the cursor. A processing unit determines the position of the two sensing devices and the position of the cursor with respect to a fixed coordinate system. From this data the position of the cursor with respect to the floating menu is determined.
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申请公布号 |
US4334124(A) |
申请公布日期 |
1982.06.08 |
申请号 |
US19800134345 |
申请日期 |
1980.03.26 |
申请人 |
INTERGRAPH CORPORATION |
发明人 |
IMSAND, BRUCE E.;KUEHLTHAU, ROBERT L. |
分类号 |
G06F3/033;G06F3/046;(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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