Invention Grant
- Patent Title: Prevention of unauthorized copying or scanning
- Patent Title (中): 防止未经授权的复制或扫描
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Application No.: US12276034Application Date: 2008-11-21
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Publication No.: US08373895B2Publication Date: 2013-02-12
- Inventor: Zhigang Fan , Francis K Tse , Robert E Nuuja
- Applicant: Zhigang Fan , Francis K Tse , Robert E Nuuja
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Fleit Gibbons Gutman Bongini & Bianco P.L.
- Agent Philip E. Blair
- Main IPC: G06F15/00
- IPC: G06F15/00 ; G06F3/12 ; G06K1/00 ; G06K15/00

Abstract:
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.
Public/Granted literature
- US20100128299A1 PREVENTION OF UNAUTHORIZED COPYING OR SCANNING Public/Granted day:2010-05-27
Information query