发明授权
- 专利标题： Variable guilloche and method
- 专利标题（中）： 可变的guilloche和方法
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申请号： US11699237申请日： 2007-01-29
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公开(公告)号： US08289579B2公开(公告)日： 2012-10-16
- 发明人: Steven J. Simske , Henry Sang , Philippe Mucher
- 申请人： Steven J. Simske , Henry Sang , Philippe Mucher
- 申请人地址： US TX Houston
- 专利权人： Hewlett-Packard Development Company, L.P.
- 当前专利权人： Hewlett-Packard Development Company, L.P.
- 当前专利权人地址： US TX Houston
- 主分类号： H04N1/40
- IPC分类号： H04N1/40 ; G06K9/00
摘要：
A variable guilloche includes at least two guilloche curves, printed in a common space and having at least one point of overlap. The at least two curves are plotted from equations having variables corresponding to a specified data string of steganographic information.
公开/授权文献
- US20080180751A1 Variable guilloche and method 公开/授权日：2008-07-31
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