ROTATIONALLY SYMMETRIC TAGS
    130.
    发明公开
    ROTATIONALLY SYMMETRIC TAGS 有权
    旋转对称的MARKS

    公开(公告)号:EP1567975A4

    公开(公告)日:2006-04-12

    申请号:EP02779045

    申请日:2002-12-03

    发明人: LAPSTUN PAUL

    IPC分类号: G06K19/06 G06K7/10 G06K9/18

    摘要: Machine-readable coded data disposed on or in a substrate in accordance with a layout, and method of generating such coded data, The layout has six-fold rotational symmetry and includes 6 identical sub-layouts rotated 1/6 revolutions apart about a center of rotational symmetry of the layout. The coded data is disposed in accordance with each sub-layout including rotation-indicating data that distinguishes the rotation of that sub-layout from the rotation of at least one other sub-layout within the layout. In one embodiment, the symbols of the sub-layouts are interleaved with each other