发明名称 |
Unit for estimating the distance to an obstacle, especially of use by the blind or the sight impaired |
摘要 |
The hand-held electronic system measures the distance of a visible obstacle using a sound echo such as an ultrasound echo. The distance is communicated to the user by a sound signal. The frequency of this sound is varied according to the measured distance to the object, thus allowing estimation of the distance without seeing the object.
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申请公布号 |
FR2787198(A3) |
申请公布日期 |
2000.06.16 |
申请号 |
FR19980015961 |
申请日期 |
1998.12.15 |
申请人 |
LAMY BERNARD |
发明人 |
LAMY BERNARD |
分类号 |
A61H3/06;G01S15/93;(IPC1-7):G01S13/08 |
主分类号 |
A61H3/06 |
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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