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1. 发明授权

US3944978A Electro-optical method and apparatus for making identifications 失效
标题翻译：电光学方法和识别装置
公开(公告)号：US3944978A
公开(公告)日：1976-03-16
申请号：US504185
申请日：1974-09-09
申请人： Niels P. Jensen , Harvey L. Kasdan , James T. Thomasson
发明人： Niels P. Jensen , Harvey L. Kasdan , James T. Thomasson
IPC分类号： A61B5/117 , G06K9/00 , G06K9/74 , G07C9/00
CPC分类号： A61B5/1172 , G06K9/00067 , G06K9/74 , G07C9/00142 , G07C9/00158
摘要： A reference diffraction pattern is generated by radiating an invariant physical characteristic such as a fingerprint with coherent light, this reference diffraction pattern being converted by a detector into a reference electrical function which is stored. A person to be identified then has a corresponding invariant physical characteristic such as his fingerprint radiated by coherent light to cause generation of a sample diffraction pattern. The frequency domain of the entire sample diffraction pattern is detected simultaneously to provide a sample electrical function. The reference electrical function in storage is then compared with the sample electrical function and if a correlation exists within a given tolerance, it is known that the person from which the sample electrical function is derived corresponds to the person from which the reference electrical function was derived. The invariant physical characteristics may be fingerprints as mentioned, or signatures, or combinations of both.
摘要翻译：通过用相干光照射诸如指纹的不变物理特性来生成参考衍射图案，该参考衍射图案由检测器转换成存储的参考电功能。然后，要识别的人具有相应的不变物理特征，例如由相干光辐射的指纹，以产生样品衍射图。同时检测整个样品衍射图的频域以提供样品电功能。然后将存储中的参考电功能与采样电功能进行比较，并且如果在给定容限内存在相关性，则已知从其导出样本电功能的人对应于从其导出参考电功能的人。不变的物理特征可以是所提及的指纹，或签名，或两者的组合。

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