专利名称：MARKING ARTICLES USING A COVERT DIGITALLY WATERMARKED IMAGE
followme发明人：LAWANDY, NABIL, M.,CONROY, JEFFREY, L.,SMUK, ANDREI, Y.
公共标志申请号：EP02776583
六级时间分配>same to you
申请日：20020606
公开号：EP1412915A4tarc
公开日：
20061004
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专利内容由知识产权出版社提供
赖世雄美语从头学摘要：A marking system that includes forming at least one marking in or on an article, wherein the image formed is not visible to the unaided human obrver, and further contains at least one digital watermark. The digitally watermarked image compris emissive and photoabsorptive portions. The digitally watermarked image is applied using a substance reactive to a predetermined excitation source, and exposure to ultraviolet light. Other traditional techniques, such as printing with fluorescent inks may be ud in combination. The digitally watermarked image is subquently obrvable upon exposure to the predetermined excitation source. The digitally watermarked image may be obrved and decoded by appropriately configured detection systems, wherein the information obtained may be ud for purpos including, but not limited to, authentication and curity of the article or information contained within the article.
日期 英文申请人：SPECTRA SYSTEMS CORPORATION
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