METHODS AND APPARATUS FOR RENDERING AN OPTICALLY ENCODED MEDIUM UNREADABLE AND TAMPER-RESISTANT
    1.
    发明公开
    METHODS AND APPARATUS FOR RENDERING AN OPTICALLY ENCODED MEDIUM UNREADABLE AND TAMPER-RESISTANT 有权
    方法和装置无法读取,使欺诈SAVE光学媒体编码

    公开(公告)号:EP1230638A4

    公开(公告)日:2004-12-29

    申请号:EP00982688

    申请日:2000-10-18

    摘要: Methods and means for rendering optically readable media unreadable and tamper resistant are disclosed. A method for this include providing the readout surface of the optically readable medium with a roughened surface by embossing, scratching, depositing a non-planar layer or the like which inhibits the readout of the medium (B). Applying a sublimable coating (200) to the roughened surface which results in a smooth surface which enables the readout of the media (C). Providing a barrier layer (200A) to the smoothed surface (D). When used, the barrier layer is removed exposing the sublimable coating (200) (E). This coating evaporates due to heating by the readout beam and/or exposure to the atmosphere to expose the roughened surface rendering the media unreadable (F).

    摘要翻译: 的方法和装置,用于再现的光学可读介质不可读和夯实它抗性是游离缺失盘。 一种用于这种方法包括:通过压花提供所述光学可读介质的读出表面具有粗糙表面,搔抓,沉积其抑制介质(B)的读出的非平面层或类似物。 施加升华涂层(200),以在粗糙表面,这导致表面光滑这使得介质(C)的读出。 提供阻挡层(200A),以平滑表面(D)。 当使用时,阻挡层被除去露出升华涂层(200)(E)。 该涂层蒸发由于由读出BEA m和/或暴露于大气中加热以暴露粗糙表面呈现不可读介质(F)。