发明名称 System for reading and authenticating a composite image in a sheeting
摘要 A system for reading and authenticating a composite image in a sheeting. A exemplary embodiment of the invention provides a system for reading and authenticating a sheeting including a composite image that appears to the unaided eye to be floating above or below the sheeting or both. The present invention also relates to methods of reading and authenticating a composite image that appears to the unaided eye to be floating above or below the sheeting or both.
申请公布号 US7616332(B2) 申请公布日期 2009.11.10
申请号 US20040002943 申请日期 2004.12.02
申请人 3M INNOVATIVE PROPERTIES COMPANY 发明人 KENNER MARTIN A.
分类号 G06F15/00 主分类号 G06F15/00
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