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    METHOD FOR PREVENTING A COPY OF DOCUMENT
    2.
    发明公开
    METHOD FOR PREVENTING A COPY OF DOCUMENT 审中-公开
    方法用于防止文档的副本

    公开(公告)号：EP1930851A4

    公开(公告)日：2009-02-18

    申请号：EP06741764

    申请日：2006-04-29

    申请人： BEIJING FOUNDER ELECTRONICS CO ,  UNIV BEIJING ,  UNIV PEKING FOUNDER GROUP CO

    发明人： QI WENFA ,  XIE JIQUAN ,  YANG BIN ,  DING XIAOHONG ,  DENG JIANG

    IPC分类号： H04N1/00 ,  G03G21/04

    CPC分类号： H04N1/00846 ,  G03G21/046 ,  G03G2215/00932 ,  H04N1/00875 ,  H04N1/00883

    摘要： This invention relates to a method for preventing a copy of document, belonging to a technical field of entire copy protection of document. In the prior art, for some important documents, specially the secret ones, the reproduction of this kind of document is usually prohibited by its owner because of the security. But the technique in the prior art can not solve the problem of preventing unauthorized reproduction. The method of the present invention is intended to embed a shading pattern under the original image of an anti-copy document, detect the marker information hidden in the anti-copy document by an application program installed in the copy device, and decide whether the document can be copied legally or not. By the method of present invention, it is possible to detect the watermark information of the anti-copy document accurately and quickly, and prevent the reproduction of the anti-copy document thoroughly. Moreover, an additional memory space is no need.

    METHOD AND SYSTEM FOR DOCUMENT PRINTING MANAGEMENT AND CONTROL AND DOCUMENT SOURCE TRACKING
    3.
    发明公开
    METHOD AND SYSTEM FOR DOCUMENT PRINTING MANAGEMENT AND CONTROL AND DOCUMENT SOURCE TRACKING 审中-公开
    方法和系统的文档打印管理和控制以及起诉DOCUMENTS

    公开(公告)号：EP2660706A4

    公开(公告)日：2015-01-21

    申请号：EP11853399

    申请日：2011-12-27

    申请人： UNIV PEKING FOUNDER GROUP CO ,  UNIV BEIJING ,  BEIJING FOUNDER ELECTRONICS CO ,  UNIV PEKING FOUNDER R & D CT

    发明人： QI WENFA ,  HAN SHUCHANG ,  WANG GAOYANG ,  WANG LIDONG ,  YANG BIN

    IPC分类号： G06F3/12 ,  H04L29/06

    CPC分类号： G06F3/1238 ,  G06F3/1222 ,  G06F3/1288 ,  G06F3/1289 ,  G06K15/4095 ,  H04L63/102 ,  H04L63/20 ,  H04L67/125 ,  H04L67/34

    摘要： The present invention provides a method and a system for document printing management and control and source tracking. A printing management service program is deployed and run at a server end. A printing monitoring service program is deployed and run at a client end. The printing management service program is responsible for saving client end information, monitoring and managing a client end computer, setting a printing management policy, and delivering an operation instruction to the client end. The printing monitoring service program is responsible for collecting the client end information, sending the client end information to the server end, and executing the operation instruction. The setting the printing management policy comprises authorizing at least one of the model and the name of a client end printer, the type of the printer, the application type, and the confidentiality level of a printed document, and setting a title sensitive word and document source tracking information. Through the present invention, the control on a printing operation of the client end can be enhanced, the flexibility of setting the printing control policy can be increased, and effective document source tracking and content audit means are provided, thereby preventing important paper documents from being printed randomly and being spread illegally.