发明授权
- 专利标题: Prevention of unauthorized copying or scanning
- 专利标题(中): 防止未经授权的复制或扫描
-
申请号: US12276034申请日: 2008-11-21
-
公开(公告)号: US08373895B2公开(公告)日: 2013-02-12
- 发明人: Zhigang Fan , Francis K Tse , Robert E Nuuja
- 申请人: Zhigang Fan , Francis K Tse , Robert E Nuuja
- 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: Fleit Gibbons Gutman Bongini & Bianco P.L.
- 代理商 Philip E. Blair
- 主分类号: G06F15/00
- IPC分类号: G06F15/00 ; G06F3/12 ; G06K1/00 ; G06K15/00
摘要:
A method for embedding “no-scan” or “no-copy” information in a document border includes encoding information as a plurality of data carrying dot pair patterns. For each page of a document to be rendered, the method includes determining whether the border area is blank. If found not blank the border area is cleared. Each of the plurality of data carrying dot patterns is embedded in the blank border area of the document page. The document page with the embedded data carrying dot patterns is then rendered, where each data carrying dot is too small to be visually noticeable.
公开/授权文献
- US20100128299A1 PREVENTION OF UNAUTHORIZED COPYING OR SCANNING 公开/授权日:2010-05-27
信息查询