发明授权
- 专利标题： Embedding information using modulated periodic line patterns
- 专利标题（中）： 使用调制的周期线图案嵌入信息
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申请号： US12637041申请日： 2009-12-14
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公开(公告)号： US08482807B2公开(公告)日： 2013-07-09
- 发明人: Zhigang Fan , Reiner Eschbach , Judith Stinehour
- 申请人： Zhigang Fan , Reiner Eschbach , Judith Stinehour
- 申请人地址： US CT Norwalk
- 专利权人： Xerox Corporation
- 当前专利权人： Xerox Corporation
- 当前专利权人地址： US CT Norwalk
- 代理机构： Fay Sharpe LLP
- 主分类号： H04N1/32
- IPC分类号： H04N1/32 ; G06T22/00
摘要：
A method and system is provided providing a variable data guilloché pattern comprised of variable data differential line pattern fonts comprising decodable template symbols which are capable of being selectively assembled into a predetermined variable data code. The differential line pattern fonts are further spatially modulated for imposition of a second data channel on a printed document. The representation can be decoded with a digital scanner capable of identifying the embedded patterns and spatially modulated transform function and communicate it to a user for verifying a document containing the code.
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