Information carrier, and system for positioning such an information carrier in an apparatus
    11.
    发明授权
    Information carrier, and system for positioning such an information carrier in an apparatus 失效
    信息载体和用于将这种信息载体定位在装置中的系统

    公开(公告)号:US07433255B2

    公开(公告)日:2008-10-07

    申请号:US11568241

    申请日:2005-04-21

    IPC分类号: G11C7/00

    CPC分类号: G11B7/0033 G11B7/0938

    摘要: The invention relates to an information carrier, and a system for positioning such an information carrier in an apparatus. This system comprises an optical element (102) for generating a periodic array of light spots (103) intended to be applied to an information carrier (101), said information carrier (101) comprising a first periodic structure (108) intended to interfere with said periodic array of light spots (103) for generating a first Moiré pattern, and a second periodic structure (109) intended to interfere with said periodic array of light spots (103) for generating a second Moiré pattern, analysis means for deriving from said first and second Moiré patterns, the angle value (S) between said periodic array of light spots (103) and said information carrier (101), and actuation means (AC1-AC2-AC3) for adjusting the angular position of said information carrier (101) with respect to said array of light spots (103), from control signals (114) derived based on said angle value (S).

    摘要翻译: 本发明涉及一种信息载体,以及用于将这种信息载体定位在装置中的系统。 该系统包括用于产生旨在施加到信息载体(101)的光点周期性阵列(103)的光学元件(102),所述信息载体(101)包括旨在干扰 所述周期阵列的光点(103)用于产生第一莫尔图案,以及第二周期性结构(109),其旨在干扰所述周期性阵列的光点(103)以产生第二莫尔图案,分析装置用于从所述 第一和第二莫尔图案,所述光点周期阵列(103)和所述信息载体(101)之间的角度值(S)以及用于调节所述光点(103)的角位置的致动装置(AC 1 -AC 2 -AC 3) 信息载体(101)相对于所述光点阵列(103)从根据所述角度值(S)导出的控制信号(114)。