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    Holographic authentication element and document having holographic authentication element formed thereon
    51.
    发明授权
    Holographic authentication element and document having holographic authentication element formed thereon 有权
    全息认证元件和其上形成有全息认证元件的文档

    公开(公告)号：US06222650B1

    公开(公告)日：2001-04-24

    申请号：US09388309

    申请日：1999-09-01

    申请人： Michael D. Long

    发明人： Michael D. Long

    IPC分类号： G03H100

    CPC分类号： G03H1/041 ,  G03H1/0011 ,  G03H1/0236 ,  G03H2001/048 ,  G03H2001/0482 ,  G03H2001/0497 ,  G03H2001/2223 ,  G03H2001/2231 ,  G03H2001/2244 ,  G03H2001/2247 ,  G03H2210/13 ,  G03H2210/22 ,  G03H2210/32 ,  G03H2210/52 ,  G03H2210/55 ,  G03H2225/22 ,  G03H2240/42 ,  G06K19/16

    摘要： Device, method, and system for recording diffractive high resolution text, pictorial, and/or other graphical information is provided which is particularly suited to recording information that would be difficult to reproduce by typical counterfeiting methods. The information recorded may be used to authenticate the recorded item, or indirectly, an item to which the recording is attached. Such items may include legal, financial and commercial instruments, credit cards, and packaging for such items as software, art, and other items where forgery of the item may be a concern. In one embodiment of the invention light is selectively passed by a shutter, and a spatial filter then cleans the beam to remove undesirable frequency components. A liquid crystal display (LCD) dynamically receives a data stream from a computer where each of the displayed data values presents an optical characteristic (for example density, phase, or polarization) to the filtered beam and causes diffraction into a plurality of diffracted beams, the character of which is dependent on the data displayed. A mask selectively passes only predetermined ones of the beams so that only frequency components that will generate the desired optical interference fringes are allowed to pass. Additional optical components receive the passed beams and redirect them to overlap at an output plane to form interference fringes. These interference fringes can have a very high spatial frequency so that extremely fine lines or small objects, including text and graphics, can be recorded.

    摘要翻译： 提供用于记录衍射高分辨率文本，图形和/或其他图形信息的装置，方法和系统，其特别适用于通过典型的伪造方法记录难以再现的信息。 记录的信息可以用于对记录的项目进行认证，或者间接地验证记录附着的项目。 这些项目可能包括法律，金融和商业工具，信用卡，以及软件，艺术品和其他物品的伪造物品可能会引起关注的物品的包装。 在本发明的一个实施例中，光被快门选择性地通过，并且空间滤光器然后清洁光束以去除不期望的频率分量。 液晶显示器（LCD）动态地接收来自计算机的数据流，其中每个显示的数据值向滤波的光束呈现光学特性（例如，密度，相位或极化），并将衍射衍射成多个衍射光束， 其字符取决于显示的数据。 掩模仅选择性地仅通过预定的光束通过，使得仅允许产生期望的光学干涉条纹的频率分量通过。 附加的光学部件接收所传递的光束并将其重定向在输出平面处重叠以形成干涉条纹。 这些干涉条纹可以具有非常高的空间频率，使得可以记录包括文本和图形在内的极细线或小物体。

    Computer-assisted holographic image formation technique which determines interference pattern data used to form the holographic
    52.
    发明授权
    Computer-assisted holographic image formation technique which determines interference pattern data used to form the holographic 失效
    计算机辅助全息图像形成技术，其确定用于形成全息的干涉图案数据

    公开(公告)号：US5347375A

    公开(公告)日：1994-09-13

    申请号：US981296

    申请日：1992-11-25

    申请人： Tutomu Saito ,  Toshikazu Matsui

    发明人： Tutomu Saito ,  Toshikazu Matsui

    IPC分类号： G03H1/08 ,  G06F17/17 ,  G03H1/04 ,  G06F7/38 ,  G06K9/76

    CPC分类号： G03H1/0841 ,  G03H1/0476 ,  G06F17/175 ,  G03H1/0891 ,  G03H2001/0478 ,  G03H2001/0825 ,  G03H2210/32 ,  G03H2210/42 ,  G03H2210/44 ,  G03H2226/02 ,  G03H2240/62 ,  Y10S359/90

    摘要： A computer-generated hologram recording apparatus includes a diffraction image generator which receives an input image signal representing an object and computes a corresponding diffraction pattern with a first sampling density. An interpolation processor is connected to the diffraction image generator via an intermediate page memory. The interpolation processor subjects the diffraction pattern to the interpolation process to create an interpolated diffraction pattern with an increased second sampling density. An interference pattern generator is connected to the interpolation processor to compute an interference caused pattern between the interpolated diffraction pattern and a reference wave by converting amplitude and phase distributions of the input image signal into the intensity distribution. A multi-beam scan printing apparatus records the interference pattern on a previously selected recording medium for later reproduction by use of white light.

    摘要翻译： 计算机生成的全息图记录装置包括：衍射图像生成器，其接收表示对象的输入图像信号，并以第一采样密度计算相应的衍射图案。 内插处理器经由中间页存储器连接到衍射图像生成器。 内插处理器将衍射图案进行插值处理，以产生具有增加的第二采样密度的内插衍射图案。 干涉图案发生器连接到内插处理器，通过将输入图像信号的幅度和相位分布转换成强度分布来计算内插衍射图案和参考波之间的干涉引起的图形。 多光束扫描打印设备将干涉图案记录在先前选择的记录介质上，以便通过使用白光进行后续再现。

    AUTOMATIC THREE-DIMENSIONAL PRESENTATION FOR HYBRID MEETINGS
    53.
    发明公开
    AUTOMATIC THREE-DIMENSIONAL PRESENTATION FOR HYBRID MEETINGS 审中-公开

    公开(公告)号：US20230236543A1

    公开(公告)日：2023-07-27

    申请号：US17586416

    申请日：2022-01-27

    申请人： Microsoft Technology Licensing, LLC

    发明人： Rolly SETH ,  Omar AMIN

    IPC分类号： G03H1/08 ,  G06F3/0482

    CPC分类号： G03H1/08 ,  G06F3/0482 ,  G03H2210/32 ,  G03H2210/33

    摘要： Systems and methods are directed to automatically generating a three-dimensional (3D) holographic presentation from a two-dimensional (2D) slide presentation. A network system receives an indication to generate the 3D holographic presentation, which causes automatic generation of the 3D holographic presentation by the network system. In response to receiving the indication, the network system accesses the 2D slide presentation from a user device associated with a presenter and accesses, from a mapping database, a plurality of mappings that indicate how to convert elements of each slide of the 2D slide presentation into a 3D format. The network system then transforms elements of each slide from a 2D format into the 3D format based on the plurality of mappings. The 3D holographic presentation is generated from the transformed elements by blending the transformed elements with a background and/or real-world image data captured by an image capture device.