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    • 2. 发明申请
    • METHODS AND APPARATUS FOR INCORPORATING AND DECODING INFORMATION ENCRYPTED ON TRANSMISSIVE AND REFLECTIVE SUBSTRATES USING AMPLITUDE AND PHASE CONTRAST MODULATION
    • 使用振幅和相位对比调制方式对装置和反射基板进行加密和解码的方法和装置
    • WO2004084414A2
    • 2004-09-30
    • PCT/US2003/037867
    • 2003-11-24
    • THOR, GautamSIDDIQI, Mansoor
    • THOR, GautamSIDDIQI, Mansoor
    • H03M
    • G03H1/0841G03H1/0276G03H1/0891G03H1/30G03H2001/0292G03H2001/0825G03H2001/2292G03H2210/20G03H2210/441G03H2270/23
    • Methods for incorporating information, within the same or in distinct physical locations, in the form of patterns represented by visual, audio or electronic formats, that originate from a single source but that carry encrypted, complementary 5 information, and such patterns upon appropriate interrogation, regenerate the original. Covert images are created using inverse functions like Fourier transformations of one or more sets of complementary patterns from the original. Covert or hidden images are prepared by methods including converting the spatial domains to the frequency domain of at least a portion of the original image that has been sampled or generated by the computer. Techniques based on phase contrast modulation are also provided. Binary patterns transform the amplitude/phase values of a signal into encoded messages. These are invisible to the naked eye unless viewed using limited-extent sources of light. Methods and apparatus for making, encoding, and encrypting binary patterns for storing recorded information are also provided. One method includes the steps of providing an original image, fragmenting the original image into at least first and second parts, forming a mirror image of one of the a least two parts, inverting the first and second parts, forming a binary pattern of the first part and the second part, and forming a mirror image of the binary pattern of the one of the a least two parts. In this method the binary pattern in each of the parts includes information representing a respective portion of the original image.
    • 在相同或不同的物理位置内以以视觉,音频或电子格式表示的图案形式的信息的信息的方法,其源于单个来源,但是在适当询问时携带加密的,补充的5个信息以及这些模式, 再生原来的。 使用从原始的一组或多组互补模式的傅里叶变换的逆函数创建隐蔽图像。 通过包括将空间域转换为由计算机采样或生成的原始图像的至少一部分的频域的方法来准备隐蔽或隐藏的图像。 还提供了基于相位调制技术。 二进制模式将信号的振幅/相位值转换成编码信息。 除非使用有限的光源来观察,否则这些肉眼看不见。 还提供了用于制作,编码和加密用于存储记录信息的二进制模式的方法和装置。 一种方法包括以下步骤:提供原始图像,将原始图像分段成至少第一和第二部分,形成至少两个部分之一的镜像,反转第一和第二部分,形成第一和第二部分的二进制图案 部分和第二部分,并形成至少两个部分之一的二进制图案的镜像。 在该方法中,每个部分中的二进制图案包括表示原始图像的相应部分的信息。
    • 3. 发明申请
    • UNDER SURFACE MARKING PROCESS FOR A PUBLIC/PRIVATE KEY
    • 公共/私人关键字的表面标记过程
    • WO2013055318A1
    • 2013-04-18
    • PCT/US2011/055752
    • 2011-10-11
    • THOR, Gautam
    • THOR, Gautam
    • G02B5/32
    • G03H1/0011G02B5/32G02B26/0841G03H1/024G03H1/0891G03H1/30G03H2001/0016G03H2001/048G03H2223/19G03H2225/24G03H2240/41G03H2260/62G03H2270/32
    • The innovation involves the use of a laser to ablate a calculated microstructure or employ an adaptation of maskless photolithography using a Digital Micromirror Device to serve as a Spatial Light Modulator to embed a covert diffraction screen, holding encrypted information under transparent surfaces of plastics or glass substrates. One method includes the steps of fragmenting the calculated diffraction screen into at least first and second parts that are placed in separate locations. In this method the binary pattern in each of the parts includes information representing a respective portion of the original image and needs to be interrogated simultaneously to provide a meaningful visual output: each part by itself being incapable of generating any meaningful information. The fragmentation method allows a public-private key type of secure system platform.
    • 该创新涉及使用激光来消融计算的微结构或使用数字微镜器件进行无掩模光刻的适应,以用作空间光调制器以嵌入隐蔽衍射屏幕,将加密信息保持在塑料或玻璃基板的透明表面下 。 一种方法包括将所计算的衍射屏幕分段成放置在分开的位置中的至少第一和第二部分的步骤。 在该方法中,每个部分中的二进制模式包括表示原始图像的相应部分的信息,并且需要被同时询问以提供有意义的视觉输出:每个部分本身不能产生任何有意义的信息。 分片方法允许公钥 - 私钥类型的安全系统平台。