发明名称 |
Integrated circuit for measuring the distance |
摘要 |
An integrated circuit for measuring the distance houses an oscillator in a package. Further, a plane inductor is provided on the surface of the package housing the oscillator. The plane inductor is connected to the oscillator so as to specify a frequency of the oscillator. If conductive material approaches the surface of the package, the frequency of the oscillator is varied by means of the plane inductor. The approaching distance of the conductive material is detected by detecting the frequency of the oscillator. The conductive material is mostly metal, however, the integrated circuit for measuring the distance can measure the approaching distance of non-metal conductive material such as conductive liquid.
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申请公布号 |
US5949293(A) |
申请公布日期 |
1999.09.07 |
申请号 |
US19980023771 |
申请日期 |
1998.02.13 |
申请人 |
JAPAN SYSTEM DEVELOPMENT CO., LTD. |
发明人 |
AKAMATSU, NORIO;KANAOKA, HIDESHI |
分类号 |
G01B7/00;G01B7/14;G01C3/10;G01D5/20;G01D5/243;G01N27/00;G01V3/11;H03B5/18;(IPC1-7):H03B5/18 |
主分类号 |
G01B7/00 |
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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