| 发明名称 |
DEVICE FOR STORING AND READING GENUINE INFORMATION |
| 摘要 |
<p>A method and apparatus are provided for storing and reading authenticating information which is recorded on a carrier comprising at least one diffraction screen for modifying the path of a beam from an optical reading apparatus consisting of a light-source and a light-receiver. A method is provided for producing an information carrier having at least one diffraction screen.</p> |
| 申请公布号 |
JPS5223232(A) |
申请公布日期 |
1977.02.22 |
| 申请号 |
JP19760092105 |
申请日期 |
1976.08.03 |
| 申请人 |
ERU GEE TSUETSUTO RANDEISU UNTO GIIRU TSUUKU AG |
发明人 |
DATSUBITSUDO RESURII GURIINAUEI |
| 分类号 |
G06K7/12;G02B5/18;G02B5/28;G02B27/00;G02B27/42;G06K1/12;G06K7/14;G06K17/00;G06K19/16;G07F7/08 |
主分类号 |
G06K7/12 |
| 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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