METHOD AND SYSTEM FOR IDENTIFYING DOCUMENTS GENERATED BY AN UNAUTHORIZED SOFTWARE COPY
    1.
    发明申请
    METHOD AND SYSTEM FOR IDENTIFYING DOCUMENTS GENERATED BY AN UNAUTHORIZED SOFTWARE COPY 审中-公开
    用于识别未经授权的软件副本生成的文档的方法和系统

    公开(公告)号:WO1997040619A1

    公开(公告)日:1997-10-30

    申请号:PCT/US1996005670

    申请日:1996-04-23

    Abstract: Each copy of software (9) is assigned a unique identifying code pattern (27) which is printed on all documents (19) produced with that software (9) by a high resolution printer (17). The unique identifying code pattern (27) is a plurality of spaced apart marks having a size no greater than about 300 dpi, and is therefore, at best, barely noticeable to the human observer. The "invisible signature" is also reproduced on documents (19) made by unauthorized copies of software (9) which can therefore be traced. Preferably, the unique identifying code (27) is replicated multiple times (27>1 5 1 5 1 5

    Abstract translation: 为每个软件副本(9)分配一个唯一的识别代码模式(27),该识别代码模式被打印在由该软件(9)由高分辨率打印机(17)产生的所有文档(19)上。 独特的识别码图案(27)是具有不大于约300dpi的尺寸的多个间隔开的标记,并且因此至多对人类观察者几乎不可察觉。 “隐形签名”也被复制在由未经授权的软件副本(9)制作的文件(19)上,因此可以追溯。 优选地,使用纠错码在文档(19)上复制多次(27> 1 <-27> 5 <)所述唯一识别码(27),以确保至少一个复制将被清除选择用于打印的物质 由软件。 高分辨率扫描器(21)提取并识别打印在文档(19)上的代码图案(27> 1 <-27> 5 <)。 在软件(9)产生(39)用于高分辨率打印机(17)的打印文件的系统中,模式复制(27> 1 <-27> 5 <)的打印命令与其他打印机(41)分散 由于“隐形签名”不能防止复制软件(9)或显着地损害完成的文档(19)的外观,所以令命令识别和删除命令非常困难并且不值得。

    METHOD AND SYSTEM FOR IDENTIFYING THE SOURCE OF DOCUMENTS GENERATED BY SOFTWARE
    2.
    发明申请
    METHOD AND SYSTEM FOR IDENTIFYING THE SOURCE OF DOCUMENTS GENERATED BY SOFTWARE 审中-公开
    识别软件产生的文件来源的方法和系统

    公开(公告)号:WO1998015917A1

    公开(公告)日:1998-04-16

    申请号:PCT/US1997015736

    申请日:1997-10-07

    Abstract: Each copy (19) of software, such as software used by a digital computer (3) to create a document and the software used by printers (47), facsimile machines (77) or digital copiers (61) to produce or reproduce documents, is assigned a unique identifying code pattern (27) which is printed on all documents (19) produced with that software by a high resolution printer. The unique identifying code pattern (27) is a plurality of spaced apart marks (29) having a size no greater than about 150 dpi and preferably about 300 dpi, and is therefore, at best, barely noticeable to the human observer. The "invisible signature" permits detection of documents (19) made by unauthorized copies of software or by unauthorized or improper use of authorized copies. Preferably, the unique identifying code (27) is replicated multiple times (271-275) over the document (19) using an error correcting code to assure that at least one replication will be clear of matter selected for printing by the software. A high resolution scanner (21) extracts and identifies the code patterns (271-275) printed on the document (19). In systems (1) where the software generates a print file (11) for the high resolution printer, print commands for the pattern replications (271-275) are interspersed with the other print commands making identification and removal of the commands very difficult and not worth the effort since the "invisible signature" does not prevent copying of the software or noticeably detract from the appearance of the finished document (19).

    Abstract translation: 软件的每个副本(19),例如由数字计算机(3)用于创建文档的软件和由打印机(47)使用的软件,传真机(77)或数字复印机(61)来生成或再现文档, 被分配有由高分辨率打印机打印在由该软件生成的所有文档(19)上的唯一识别码模式(27)。 独特的识别码型(27)是具有不大于约150dpi,优选约300dpi的尺寸的多个间隔开的标记(29),并且因此最好仅对人类观察者不太了解。 “无形签名”允许检测未经授权的软件副本或未授权或不正确使用授权副本的文件(19)。 优选地,通过使用错误校正码来复制文件(19)上的多次(271-275)的唯一识别码(27),以确保至少一个复制将清除由软件选择进行打印的物品。 高分辨率扫描器(21)提取并识别打印在文档(19)上的代码图案(271-275)。 在软件生成用于高分辨率打印机的打印文件(11)的系统(1)中,用于模式复制(271-275)的打印命令与其他打印命令分开,使命令的识别和删除非常困难,而不是 值得努力,因为“隐形签名”不能防止软件的复制或显着地减损成品的外观(19)。

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