发明名称 |
Method and apparatus for recognizing code information |
摘要 |
A light source, a converging lens and a light responsive image sensor are optically coupled to recognize the code information such as bar codes recorded on an object. The light source supplies the code information with illumination light and the image sensor receives the reflected light through the converging lens to convert it into the image signal. The distance between the lens and the image sensor is adjusted automatically in response to the image signal such that clear reflected light is received by the image sensor, whereby correct information recognizing operation is attained.
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申请公布号 |
US4136821(A) |
申请公布日期 |
1979.01.30 |
申请号 |
US19770818669 |
申请日期 |
1977.07.25 |
申请人 |
NIPPONDENSO CO., LTD. |
发明人 |
SUGIURA, AKIO;OKAMOTO, ATUTOSHI;NOJIRI, TADAO |
分类号 |
G06K7/015;G02B7/32;G02B27/40;G06K7/10;(IPC1-7):G06K7/14;G03B7/08;G06K5/00 |
主分类号 |
G06K7/015 |
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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