Invention Application
US20090067310A1 STORAGE MEDIUM, PREFERABLY FOR A CARRIER, AND READING DEVICE AND METHOD FOR READING THE STORAGE MEDIUM 审中-公开
存储介质,优先用于载体,读取装置和读取存储介质的方法

STORAGE MEDIUM, PREFERABLY FOR A CARRIER, AND READING DEVICE AND METHOD FOR READING THE STORAGE MEDIUM
Abstract:
The invention relates to a storage medium, preferably a carrier. The aim of the invention is to make manipulation of data information of the storage medium or of non-authorized copies of the storage medium visible. For this purpose, the storage medium comprises a transparent layer and a layer produced from an opaque material, the layer of the opaque material having a section with a medium transmittance between 0% and 100% which is semi-transparent to electromagnetic radiation and an informative content comprising the value of the medium transmittance being stored in the storage medium.
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