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    • 4. 发明授权
    • 인증 시스템 및 방법
    • 인증시스템및방법
    • KR100874294B1
    • 2008-12-18
    • KR1020027002123
    • 2000-08-08
    • 피지컬 옵틱스 코포레이션
    • 코스트르제프스키,앤드류에이.새번트,가젠드라디.잰슨,토마스피.잰슨,조안나엘.
    • G06K9/00
    • G06K9/745G06E3/001G06K9/748G06K19/086
    • An authentication system using a correlator that correlates an input (84) with a reference (88) wherein at least one of the input and reference comprises a phase volume mask having structures that are each less than about six microns in size and can have an aspect ratio (AR) greater than 1:1 so as to produce a phase encoded random pattern having millions of combinations in a mask that is as small as one square millimeter. The random pattern can be convolved with a second pattern, such as a biometric pattern, to produce a phase convolved mask. The correlator (82) preferably is a nonlinear joint transform correlator that can use "chirp" encoding. The correlator optically Fourier transforms (98) images of the reference and input that are thereafter nonlinearly transformed and inverse Fourier transformed by a processor (104) to determine authenticity (106, 110). A spatial light modulator (SLM) can be used as an input or reference.
    • 一种使用将输入(84)与参考(88)相关联的相关器的认证系统,其中输入和参考中的至少一个包括相位体积掩模,该相位体积掩模具有每个尺寸小于约6微米的结构并且可以具有方面 比率(AR)大于1:1,以便产生具有数百万个组合的相位编码随机图案,该掩模小到一平方毫米。 随机模式可以与第二模式(例如生物模式)卷积以产生相位卷积掩模。 相关器(82)优选地是非线性联合变换相关器,其可以使用“啁啾声” 编码。 相关器光学傅立叶变换参考和输入的(98)图像,其随后被处理器(104)进行非线性变换和逆傅立叶变换以确定真实性(106,110)。 空间光调制器(SLM)可以用作输入或参考。
    • 5. 发明公开
    • 인증 시스템 및 방법
    • 认证系统及方法
    • KR1020080088664A
    • 2008-10-02
    • KR1020087022111
    • 2000-08-08
    • 피지컬 옵틱스 코포레이션
    • 코스트르제프스키,앤드류에이.새번트,가젠드라디.잰슨,토마스피.잰슨,조안나엘.
    • G06K9/00
    • G06K9/745G06E3/001G06K9/748G06K19/086
    • An authentication system using a correlator that correlates an input (84) with a reference (88) wherein at least one of the input and reference comprises a phase volume mask having structures that are each less than about six microns in size and can have an aspect ratio (AR) greater than 1:1 so as to produce a phase encoded random pattern having millions of combinations in a mask that is as small as one square millimeter. The random pattern can be convolved with a second pattern, such as a biometric pattern, to produce a phase convolved mask. The correlator (82) preferably is a nonlinear joint transform correlator that can use "chirp" encoding. The correlator optically Fourier transforms (98) images of the reference and input that are thereafter nonlinearly transformed and inverse Fourier transformed by a processor (104) to determine authenticity (106, 110). A spatial light modulator (SLM) can be used as an input or reference.
    • 一种使用将输入(84)与参考(88)相关联的相关器的认证系统,其中所述输入和参考中的至少一个包括相位体积掩模,所述相位体积掩模的结构的尺寸均小于约六微米,并且可以具有方面 比率(AR)大于1:1,以便在小于1平方毫米的掩模中产生具有数百万组合的相位编码随机图案。 随机图案可以与诸如生物特征图案的第二图案进行卷积,以产生相位卷积掩模。 相关器(82)优选地是可以使用“啁啾”编码的非线性联合变换相关器。 相关器光学傅里叶变换参考和输入的(98)图像,然后由处理器(104)进行非线性变换和傅立叶逆变换以确定真实性(106,110)。 空间光调制器(SLM)可用作输入或参考。