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    METHODS FOR DESIGNING AND PRODUCING A SECURITY FEATURE
    2.
    发明公开
    METHODS FOR DESIGNING AND PRODUCING A SECURITY FEATURE 审中-公开

    公开(公告)号：US20240051325A1

    公开(公告)日：2024-02-15

    申请号：US18266562

    申请日：2021-12-14

    申请人： Koenig & Bauer Banknote Solutions SA

    发明人： Robert Laird Stewart

    IPC分类号： B42D25/342 ,  B42D25/21

    CPC分类号： B42D25/342 ,  B42D25/21

    摘要： A method of designing at least an area of a printed image in a security feature is provided. The security feature comprises an array of optical elements overlaying the printed image. The method comprises designing an icon matrix comprising rows and columns of pixels having pixel values representing an icon to be viewed by a user of the security feature; determining a desired gap size to provide a desired magnification of the icon; generating an array of two dimensional matrices of pixels, wherein the array comprises a sequence of repeated sets of matrices, wherein each set comprises a first number of matrices of a first type having a first size and a second number of matrices of a second type having a second size, wherein the matrix of the first type and the matrix of the second type are based on the icon matrix, and wherein the first number, second number, first size, and second size are selected such that, the mean size of each matrix within the set deviates from the modal matrix size by the desired gap size. A printed image for a security feature is also provided.

    Security Device with Chaosmetric Artifacts from Fractal Patterns
    6.
    发明申请
    Security Device with Chaosmetric Artifacts from Fractal Patterns 有权

    公开(公告)号：US20230043690A1

    公开(公告)日：2023-02-09

    申请号：US17694737

    申请日：2022-03-15

    申请人： Blocktag, Inc.

    发明人： Nova Spivack ,  Allie Zhang ,  Chun Ming Chin

    IPC分类号： B42D25/305 ,  B42D25/21 ,  G06K7/14

    摘要： Security devices having chaosmetric artifacts from fractal patterns are disclosed. In one aspect, embodiments of the present disclosure include a security device, having a physical surface having formed thereon a composite pattern. The composite pattern can created from created from joining of an imprint of a first base pattern and an imprint of a second base pattern. The first base pattern can be created from a first basic building block. In one embodiment, the first base pattern is a fractal pattern based on the first basic building block which forms chaosmetric artifacts in the physical surface upon printing.

    Applying and Using Unique Unclonable Physical Identifiers
    7.
    发明申请
    Applying and Using Unique Unclonable Physical Identifiers 有权

    公开(公告)号：US20220242160A1

    公开(公告)日：2022-08-04

    申请号：US17721524

    申请日：2022-04-15

    申请人： DUST Identity, Inc.

    发明人： Ophir Gaathon ,  Peter Gillooly ,  Jonathan Hodges ,  Jeffrey Germain ,  Sinan Karaveli

    IPC分类号： B42D25/41 ,  B42D25/45 ,  B42D25/313 ,  B42D25/21 ,  B42D25/387

    摘要： In a general aspect, unique unclonable physical identifiers are applied and used. A method of applying the unique marker can include receiving an object having a surface feature and forming a unique marker on the surface feature of the object. The unique marker includes a distribution of elements and conforms with a morphology of the surface feature. The method further includes extracting orientation information from the unique marker. The orientation information can indicate relative spatial orientations of the respective elements. The method additionally includes generating a unique code for the object based on the orientation information. The surface feature can be facets, surface patterns, textures, or other indentations of the object. The surface feature can include a region of the object that is susceptible to tampering.