发明授权
US5701000A Code reader and code reading method for reading code printed on surface
of printing medium
失效
用于读取打印介质表面印刷代码的代码阅读器和代码读取方法
- 专利标题： Code reader and code reading method for reading code printed on surface of printing medium
- 专利标题（中）： 用于读取打印介质表面印刷代码的代码阅读器和代码读取方法
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申请号： US500185申请日： 1995-07-10
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公开(公告)号： US5701000A公开(公告)日： 1997-12-23
- 发明人: Masashi Suzuki
- 申请人： Masashi Suzuki
- 申请人地址： JPX Shizuoka
- 专利权人： Kabushiki Kaisha TEC
- 当前专利权人： Kabushiki Kaisha TEC
- 当前专利权人地址： JPX Shizuoka
- 优先权： JPX6-164009 19940715
- 主分类号： G06K7/00
- IPC分类号： G06K7/00 ; G06K7/10
摘要：
A code reader, for reading a code printed on a surface of a printing medium, includes a photoelectric device for converting light reflected from the code into an electric signal. An amplifier is provided for amplifying the electric signal converted by the photoelectric device. A gain adjusting device is provided for adjusting a gain of the amplifier such that a summit level of the electric signal can be raised to a predetermined upper limit level. A digitizing device is provided for converting the electric signal amplified by the amplifier into a binary signal, using a predetermined level.
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