Watermarks for secure distribution of digital data
    152.
    发明申请
    Watermarks for secure distribution of digital data 有权
    用于数字数据安全分发的水印

    公开(公告)号:US20030202679A1

    公开(公告)日:2003-10-30

    申请号:US10419490

    申请日:2003-04-21

    Inventor: Ismael Rodriguez

    CPC classification number: H04N1/32299 H04N1/32144 H04N1/32325 H04N2201/323

    Abstract: A visible first watermark and invisible second and third watermarks are embedded in digital media content, in order to protect the media content from piracy. The visible first watermark protects the media content during distribution and storage, while the invisible second and third watermarks are embedded in to identify an owner and displaying entity, respectively. The second and third watermark keys can be used to detect the associated watermarks for forensic purposes. The first, second and third watermark keys are symmetric keys. A distribution entity embeds the visible first watermark in the media content using the first watermark key and embeds an invisible second watermark in the media content using the second watermark key. The distribution entity transmits the media content with the embedded visible first watermark and invisible second watermark to a displaying entity, wherein the displaying entity removes the visible first watermark from the media content using the first watermark key and embeds the invisible third watermark in the media content using the third watermark key.

    Abstract translation: 将可见的第一水印和不可见的第二和第三水印嵌入在数字媒体内容中,以保护媒体内容免受盗版。 可见的第一水印在分发和存储期间保护媒体内容,而不可见的第二和第三水印被嵌入以分别标识所有者和显示实体。 第二和第三水印密钥可以用于检测相关联的水印以进行取证。 第一,第二和第三水印键是对称键。 分发实体使用第一水印密钥将可见第一水印嵌入媒体内容,并使用第二水印密钥将不可见的第二水印嵌入媒体内容。 分发实体将具有嵌入的可见第一水印和不可见的第二水印的媒体内容发送到显示实体,其中显示实体使用第一水印密钥从媒体内容中去除可见的第一水印,并将不可见的第三水印嵌入媒体内容 使用第三个水印键。

    Method for embedding manipulation-secure digital fingerprints into electronic documents
    153.
    发明授权
    Method for embedding manipulation-secure digital fingerprints into electronic documents 有权
    将操作安全数字指纹嵌入电子文档的方法

    公开(公告)号:US06636613B1

    公开(公告)日:2003-10-21

    申请号:US09415538

    申请日:1999-10-08

    Abstract: In a method for embedding collusion-secure digital fingerprints in electronic documents, using a geometric order system one point in the projective space PG (d, q) is unambiguously assigned to each flagging position in a document via a secret function. At least two hyperplanes of PG (d, q) are assigned to each fingerprint, each being exclusively assigned to one fingerprint only, and for each fingerprint precisely those flagging positions that correspond to the points of the selected hyperplane are flagged. To trace attempts to delete fingerprints, an intersection of hyperplanes is reconstructed from the flagged flagging positions that have been found in the document, by analyzing linear dependencies the hyperplanes are determined, and by calculating these hyperplanes the fingerprints of colluding customers may be determined.

    Abstract translation: 在用于将电子文档中的共谋安全数字指纹嵌入的方法中,使用几何秩序系统,投影空间PG(d,q)中的一个点通过秘密功能被明确地分配给文档中的每个标记位置。 至少两个PG(d,q)的超平面被分配给每个指纹,每个指纹仅被分配给一个指纹,并且对于每个指纹,精确地标记与所选超平面的点相对应的标记位置被标记。 为了追踪删除指纹的尝试,通过文档中已经找到的标记标记位置,通过分析确定超平面的线性依赖关系,并通过计算这些超平面,可以确定共谋客户的指纹,重建超平面交叉点。

    METHOD AND APPARATUS FOR TRACKING DOCUMENTS
    157.
    发明申请
    METHOD AND APPARATUS FOR TRACKING DOCUMENTS 审中-公开
    跟踪文件的方法和装置

    公开(公告)号:US20170039519A1

    公开(公告)日:2017-02-09

    申请号:US15296684

    申请日:2016-10-18

    Abstract: A method and apparatus are provided for tracking documents. The documents are tracked by simultaneously monitoring each document's electronic processing status and physical location. Determinations are made whether specific combinations of electronic processing states and physical locations are valid and whether specific movements of documents are permitted. Invalid combinations or movements are reported to a reporting station. The preparation of batches of documents prior to scanning may be monitored and operator metrics related to the batch prep process may be tracked. Exception documents rejected during document processing may be monitored to enable retrieval of such documents.

    Abstract translation: 提供了一种跟踪文档的方法和装置。 通过同时监视每个文档的电子处理状态和物理位置来跟踪文档。 确定电子处理状态和物理位置的特定组合是否有效以及文档的具体移动是否被允许。 无效的组合或动作报告给报告站。 可以监视在扫描之前准备批次的文件,并且可以跟踪与批量制备过程相关的操作者度量。 文件处理期间被拒绝的异常文件可能被监控,以便检索这些文件。

    PRINTING DEVICE AND PRINTING SYSTEM
    160.
    发明申请
    PRINTING DEVICE AND PRINTING SYSTEM 审中-公开
    打印设备和打印系统

    公开(公告)号:US20160042574A1

    公开(公告)日:2016-02-11

    申请号:US14436736

    申请日:2013-12-02

    Inventor: Shinichi Yoshie

    Abstract: To prevent forgery of printouts by a simple configuration that can be easily introduced to an existing system, a printer 3 that prints a receipt based on print data sent from a POS terminal 2 has: a code generating unit 33 that generates a unique code unique to each receipt based on the print data; a print control unit 31 and print unit 45 that print a receipt based on the print data, and print the unique code on the receipt; and a code transmission unit 34 that outputs the unique code to a receipt history server 6.

    Abstract translation: 为了通过可以容易地引入现有系统的简单配置来防止打印输出伪造,基于从POS终端2发送的打印数据打印收据的打印机3具有:代码生成单元33,其生成唯一的代码, 每张收据基于打印数据; 打印控制单元31和打印单元45,其基于打印数据打印收据,并在收据上打印唯一代码; 以及将唯一码输出到收据历史服务器6的代码发送单元34。

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