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1. 发明公开

EP1405251A4 DIGITAL AUTHENTICATION WITH DIGITAL AND ANALOG DOCUMENTS 审中-公开
标题翻译：带有数字和模拟文件的数字认证
公开(公告)号：EP1405251A4
公开(公告)日：2005-10-05
申请号：EP02737376
申请日：2002-06-05
申请人： MEDIASEC TECHNOLOGIES GMBH
发明人： ZHAO JIAN
IPC分类号： G06F12/14 , G06F1/00 , G06F21/00 , G06F21/24 , G06T1/00 , G07D7/00 , G09C5/00 , H04N1/32 , H04N1/387 , H04N7/167 , H04N21/8358 , G06K9/00 , G03G21/00 , G06F13/00 , G06K9/46 , H04L9/00 , H04L9/32 , H04N7/18
CPC分类号： H04N21/8358 , G06F21/10 , G06F2221/0737 , G06T1/0021 , G06T1/005 , G06T2201/0065 , G07D7/004 , H04N1/32101 , H04N1/32122 , H04N1/32133 , H04N1/32144 , H04N1/32203 , H04N1/32213 , H04N1/32283 , H04N7/1675 , H04N2201/3225 , H04N2201/3226 , H04N2201/3233 , H04N2201/3235 , H04N2201/3236 , H04N2201/3269 , H04N2201/327 , H04N2201/3271 , H04N2201/3281
摘要： Techniques for incorporating authentication information into digital representations of objects and using the authentication information to authenticate the objects. The authentication information may be made from information in one portion of the digital representation and incorporated into another portion of the digital representation that does not overlap the first portion. Where the digital representation is made into an analog form (703) and that in turn is made into a digital representation (706) and the second digital representation is verified, the two portions must further be non-overlapping in the analog form. The information from which the authentication is made may exist at many levels: representations of physical effects produced by the object, representations of features of the object, codes that represent the object's contents, and representations of descriptions of the object. Also disclosed are a verification server and techniques for reducing errors by an OCR. The verification server (717) verifies authenticated documents. When a document is verified, an identifier is associated with the document and the identifier is used to locate a key for authentication information and in some cases a second copy of the authentication information. The verification process may also involve security patterns that are a physical part of the analog form. The error reduction techniques include an error code specifying characters in the object that are confusing to OCR devices, and the error code is used to correct the results of an OCR reading of an analog form.

2. 发明公开

EP1709525A2 IMPROVED TECHNIQUES FOR DETECTING, ANALYZING, AND USING VISIBLE AUTHENTICATION PATTERNS 审中-公开
标题翻译：改进的技术来识别，分析和使用可见认证模型
公开(公告)号：EP1709525A2
公开(公告)日：2006-10-11
申请号：EP05711265.8
申请日：2005-01-06
申请人： MediaSec Technologies GmbH
发明人： PICARD, Justin , ZHAO, Jian
IPC分类号： G06F7/04 , G06F17/30 , G06K9/00
CPC分类号： H04N1/32154 , G06T1/0042 , G06T1/005 , G06T2201/0065 , G06T2201/0081 , G09C5/00 , H04N1/32309 , H04N2201/3263 , H04N2201/3266 , H04N2201/3269 , H04N2201/3271 , H04N2201/3281 , H04N2201/3284
摘要： Improved techniques for making copy detection patterns and using them to detect copying relationships between digital representations. The techniques include techniques for including a message in a copy detection pattern without altering the copy detection patterns entropy and reading the message, techniques for using a copy detection pattern on an analog form to determine whether the analog form is an original analog form without reference to a digital representation of the original of the analog form's copy detection pattern, techniques for increasing the sensitivity of copy detection using copy detection patterns by modifying one of two copy detection patterns that are being compared to take into account alterations resulting from the copying process, techniques for distributing a copy detection pattern across a document, and techniques for using the entropy of a copy detection pattern to locate the copy detection pattern. Also disclosed are applications of copy detection patterns with copying that involves transformations between the digital and analog forms and with digital-to-digital copying.

3. 发明公开

EP1514227A4 VISIBLE AUTHENTICATION PATTERNS FOR PRINTED DOCUMENT 有权转让
标题翻译：可见认证模型打印的文档
公开(公告)号：EP1514227A4
公开(公告)日：2006-04-05
申请号：EP03728904
申请日：2003-05-14
申请人： MEDIASEC TECHNOLOGIES GMBH
发明人： ZHAO JIAN , PICARD JUSTIN , THORWIRTH NIELS
IPC分类号： B41J5/30 , G07D7/12 , G06K9/00 , G06T1/00 , G06T7/00 , G07D7/20 , H04N1/387
CPC分类号： G09C5/00 , G07D7/0032 , G07D7/20 , H04L9/3226 , H04L2209/608
摘要： Techniques for determining authenticity of analog forms such as packaging or documents (117). One of the techniques determines whether the analog form has been made directly from a digital representation (903) or by photocopying or scanning an analog form. The technique makes the determination by comparing (911) an original digital representation of a portion of the analog form with a digital recording (203) of the portion from the analog form and measuring differences in features that are affected by the operations of photocopying or scanning. The original digital representation (105) and the analog form may have a "noisy", i.e., random or pseudo random pattern. Such noisy patterns may further be used for other authentication purposes, such as determining whether the portion of the analog form that has the noisy pattern has been altered and to carry hidden messages. The noisy pattern may carry a logo or may be. part or all of a barcode.

4. 发明公开

EP1926035A1 Verfahren zum Erstellen eines menschenlesbaren Dokumentes sowie maschinenlesbares Dokument 审中-公开
公开(公告)号：EP1926035A1
公开(公告)日：2008-05-28
申请号：EP06019428.9
申请日：2006-09-16
申请人： MediaSec Technologies GmbH
发明人： Krüger, Roland
IPC分类号： G06F21/00
CPC分类号： G06F17/227 , G06F17/212 , G06F17/2247 , G06F21/64
摘要： Beschrieben wird ein Verfahren zum Erstellen eines menschenlesbaren Dokumentes, das neben wenigstens einen Datensatz wenigstens eine den Datensatz beschreibende semantische Information, kurz Semantik.
Das lösungsgemäße Verfahren setzt sich aus folgenden Verfahrensschritten zusammen:
- Bereitstellen des Datensatzes sowie der Semantik jeweils in digitaler Form,
- Erzeugen einer menschenlesbaren Darstellung des Dokumentes auf der Grundlage des wenigstens einen Datensatzes und der wenigstens einen Semantik,
- Signieren des Datensatzes und der Semantik und
- Integrieren des signierten Datensatzes und der signierten Semantik in die menschenlesbare Darstellung derart, dass eine Extraktion des signierten Datensatzes sowie der signierten Semantik aus der menschenlesbaren Darstellung möglich ist, und dass auf Grundlage des extrahierten, signierten Datensatzes und der extrahierten signierten Semantik eine idempotente, menschenlesbare Darstellung des Dokumentes erzeugbar ist.
摘要翻译：创建方法包括以数字形式提供至少一个数据记录（1）和语义项。数据记录和语义项被电子签名，以生成签名数据记录和签名语义（2），并生成文档的人类可读表示（4）。签名的数据记录和签名语义被组合成生成的表示。提取签名语义，并将其用作生成文档的幂等，可读的表示形式的基础。包含用于验证人类可读文件的方法的独立权利要求。

5. 发明公开

EP1416440A3 Apparatus and methods for improving detection of watermarks in content that has undergone a lossy transformation 审中-公开
标题翻译：装置和在内容上有损变换水印的改进的检测方法
公开(公告)号：EP1416440A3
公开(公告)日：2005-08-17
申请号：EP03025352.0
申请日：2003-11-04
申请人： Mediasec Technologies GmbH
发明人： Zhao, Jian , Picard, Justin , Thorwirth, Niels
IPC分类号： G06T1/00 , G06T7/00
CPC分类号： G06T1/0028 , G06T1/005 , G06T2201/0065 , G06T2201/0081 , G07D7/0032 , G07D7/20
摘要： Techniques for improving detection of watermarks in content that has undergone a lossy transformation. One of the techniques is used when the message that is contained in a watermark belonging to a digital representation that is derived from an original watermarked digital representation cannot be decoded. The technique obtains information about the watermark by comparing the watermark vector for the watermark that cannot be decoded with a replica of the watermark vector from the original watermarked digital representation. The replica is made using the message. Depending on the degree of similarity, the watermark's presence and some of its characteristics may be determined. Another technique improves the robustness of watermarks that are used for authentication by employing a short (even single-bit) watermark vector to make the watermark and using the message needed for the authentication to determine where the watermark is located in the digital representation. Authentication of a digital representation is done by determining whether the watermark is present in the digital representation. In another technique, detection of the presence of a watermark is used to determine what areas of a digital representation have been subject to alteration. Techniques for synchronizing digital representations for watermark detection and other purposes include adding marks whose locations can be automatically detected only with the help of information that is external to the digital representation, such as a key, and adding marks to a sequence of digital representations and detecting the marks by summing the sequence.

6. 发明公开

EP1514227A1 VISIBLE AUTHENTICATION PATTERNS FOR PRINTED DOCUMENT 有权转让
标题翻译：可见认证模型打印的文档
公开(公告)号：EP1514227A1
公开(公告)日：2005-03-16
申请号：EP03728904.8
申请日：2003-05-14
申请人： Mediasec Technologies GmbH
发明人： ZHAO, Jian , PICARD, Justin , THORWIRTH, Niels
IPC分类号： G06K9/00
CPC分类号： G09C5/00 , G07D7/0032 , G07D7/20 , H04L9/3226 , H04L2209/608
摘要： Techniques for determining authenticity of analog forms such as packaging or documents (117). One of the techniques determines whether the analog form has been made directly from a digital representation (903) or by photocopying or scanning an analog form. The technique makes the determination by comparing (911) an original digital representation of a portion of the analog form with a digital recording (203) of the portion from the analog form and measuring differences in features that are affected by the operations of photocopying or scanning. The original digital representation (105) and the analog form may have a 'noisy', i.e., random or pseudo random pattern. Such noisy patterns may further be used for other authentication purposes, such as determining whether the portion of the analog form that has the noisy pattern has been altered and to carry hidden messages. The noisy pattern may carry a logo or may be. part or all of a barcode.

7. 发明公开

EP1349368A1 Verfahren zur Markierung eines Datensatzes 审中-公开
标题翻译：维尔法伦
公开(公告)号：EP1349368A1
公开(公告)日：2003-10-01
申请号：EP03005696.4
申请日：2003-03-13
申请人： Mediasec Technologies GmbH
发明人： Koch, Eckhard, Dr. , Kubbilun, Wolfgang , Liu, Ruizhen
IPC分类号： H04N1/32
CPC分类号： G06T1/005 , G06T2201/0051 , G06T2201/0061 , H04N1/32203 , H04N1/32208 , H04N1/32261
摘要： Die Erfindung betrifft ein Verfahren zur Markierung eines vorzugsweise binär codierten Datensatzes, wobei aus dem Datensatz wenigstens ein Block (1) mit wenigstens einem Bildpunkt, vorzugsweise mit einer Mehrzahl von Bildpunkten zur Einbettung wenigstens einer zusätzlichen Information in den Datensatz ausgewählt wird und wobei der Farbwert wenigstens eines Bildpunktes des Blocks (1) modifiziert wird. Um bei dem vorgenannten Verfahren das Erscheinungsbild des Datensatzes durch die eingebettete Information nur geringfügig zu verändern und eine hohe Sicherheit gegen eine nicht-autorisierte Identifikation der eingebetteten Information zu ermöglichen, wobei gleichzeitig die eingebettete Information eine hohe Robustheit aufweist, ist verfahrengemäß vorgesehen, daß einem Block (1), der lediglich Bildpunkte eines ersten Farbwertes aufweist, ein erster 1-Bit-Schaltzustand zugewiesen wird und daß einem Block (1), der lediglich Bildpunkte eines anderen Farbwertes aufweist, ein zweiter 1-Bit-Schaltzustand zugewiesen wird und daß, gegebenenfalls, ein zur Einbettung vorgesehener Block (1), der Bildpunkte mit wenigstens zwei unterschiedlichen Farbwerten aufweist, so modifiziert wird, daß der Block (1) nach der Modifikation lediglich Bildpunkte eines Farbwertes aufweist.
摘要翻译：该方法包括从数据记录中选择具有多个图像点的块，以便嵌入至少一个附加信息项，从而修改至少一个图像点的颜色值。仅具有第一或第二颜色值的图像点的块被分配第一或第二1位切换状态。用于嵌入具有至少两个颜色值的图像点的块被修改为具有一个颜色值的图像点。该方法包括从数据记录中选择至少一个具有至少一个图像点，优选数量的图像点的块（1），用于将数据记录中的至少一个附加信息项嵌入，并且由此至少一个修改块的图像点。分配仅具有第一颜色值的图像点的块，分配第一1位切换状态，并且仅将具有另一颜色值的图像点的块分配给第二1位切换状态。修改用于嵌入具有至少两个不同颜色值的图像点的块，使得块在修改后仅具有一个颜色值的图像点。还包括以下独立权利要求：（1）具有至少一个数字水印的条形码; （2）带水印的指纹; （3）在签名的图形表示中嵌入数字水印的方法; （4）签署水印; 和（5）增加存储在数据介质上的数据的数据安全性的方法。

8. 发明公开

EP1780636A2 Improved techniques for detecting, analyzing, and using visible authentication patterns 有权转让
标题翻译：用于检测，分析和使用可见验证模式的改进技术
公开(公告)号：EP1780636A2
公开(公告)日：2007-05-02
申请号：EP06121847.5
申请日：2005-01-06
申请人： MediaSec Technologies GmbH
发明人： Zhao, Jian , Picard, Justin
IPC分类号： G06F7/02
CPC分类号： H04N1/32251 , G06K9/00577 , G07D7/004 , G07D7/20 , H04N1/32229 , H04N1/32331 , H04N1/32352 , H04N5/85 , H04N5/913 , H04N2005/91328 , H04N2005/91335 , H04N2201/3235 , H04N2201/3236 , H04N2201/327
摘要： Improved techniques for making copy detection patterns and using them to detect copying relationships between digital representations. The techniques include techniques for including a message in a copy detection pattern without altering the copy detection patterns entropy and reading the message, techniques for using a copy detection pattern on an analog form to determine whether the analog form is an original analog form without reference to a digital representation of the original of the analog form's copy detection pattern, techniques for increasing the sensitivity of copy detection using copy detection patterns by modifying one of two copy detection patterns that are being compared to take into account alterations resulting from the copying process, techniques for distributing a copy detection pattern across a document, and techniques for using the entropy of a copy detection pattern to locate the copy detection pattern. Also disclosed are applications of copy detection patterns with copying that involves transformations between the digital and analog forms and with digital-to-digital copying.
摘要翻译：改进了制作复制检测模式的技术，并使用它们来检测数字表示之间的复制关系。这些技术包括用于在复制检测模式中包括消息而不改变复制检测模式熵并读取消息的技术，用于使用模拟形式上的复制检测模式来确定模拟形式是否是原始模拟形式而不参考模拟形式的复制检测图案的原件的数字表示，用于通过修改正在比较的两个复制检测图案中的一个来考虑由复制过程产生的改变来使用复制检测图案来增加复制检测的灵敏度的技术，技术用于在文档上分发复制检测图案，以及用于使用复制检测图案的熵来定位复制检测图案的技术。还公开了涉及复制的复制检测模式的应用，其涉及数字和模拟形式之间的转换以及数字 - 数字复制。

9. 发明公开

EP1610491A1 Verfahren zur Dokumentation wenigstens einer Verifikation an einem analogen oder digitalen Dokument sowie Herstellung eines derartigen Dokumentes 审中-公开
标题翻译：一种用于这样的文件的文档的方法的模拟或数字文件中的至少一个验证以及制备
公开(公告)号：EP1610491A1
公开(公告)日：2005-12-28
申请号：EP04014615.1
申请日：2004-06-22
申请人： Mediasec Technologies GmbH
发明人： Krüger, Roland , Koch, Eckard, Dr.
IPC分类号： H04L9/32
CPC分类号： H04L9/3226 , H04L9/3247 , H04L2209/68
摘要： Beschrieben wird ein Verfahren zum Dokumentieren wenigstens einer Verifikation, die an einem mit einer elektronischen Signatur versehenen Dokument, das in digitaler oder analoger Form vorliegt und einen semantischen Informationsgehalt aufweist, durchgeführt wird, wobei die elektronische Signatur sowie der semantische Informationsgehalt des Dokumentes in eine digitale Datenstruktur zusammengefasst werden, die der Verifikation unterzogen wird, bei der ein Verifikationsprotokoll erstellt wird, das der digitalen Datenstruktur hinzugefügt wird.
Ferner wird ein Verfahren zur Erzeugung eines gegen Manipulation geschützten, wenigstens mit einer elektronischen Signatur versehenen, wenigstens eine lesbare semantische Information enthaltenden, lesbaren analogen oder digitalen Dokumentes beschrieben.
Das Verfahren zeichnet sich durch folgende Verfahrensschritte aus:

Erzeugen von die semantische Information nach Art, Anordnung und/oder optischem Erscheinungsbild beschreibenden Darstellungsdaten,
Kodieren der Darstellungsdaten unter Bildung eines so genannten Layoutcodes sowie Integrieren des Layoutcodes in das Dokument,
Erstellen der elektronischen Signatur auf Basis von wenigstens Teilen der semantischen Information sowie wenigstens Teilen des Layoutcodes und Integrieren der elektronischen Signatur in das Dokument.
摘要翻译：签名容器可以是智能卡（6）。用户可以输入和接收与在计算机终端（1）的数据，连接到计算机的信息制备单元（3）。该单元准备一个语义信息条（2）。将计算机连接到一个个人识别号码（PIN）号输入端子（4）。 PIN和语义信息中的电子签名生成电路（5）被送入。在卡上的数据可以被转移到一个归档电路（7）。该卡可以被插入到一个卡读取器系统（11-14）。

10. 发明公开

EP1416440A2 Apparatus and methods for improving detection of watermarks in content that has undergone a lossy transformation 审中-公开
标题翻译：装置和在内容上有损变换水印的改进的检测方法
公开(公告)号：EP1416440A2
公开(公告)日：2004-05-06
申请号：EP03025352.0
申请日：2003-11-04
申请人： Mediasec Technologies GmbH
发明人： Zhao, Jian , Picard, Justin , Thorwirth, Niels
IPC分类号： G06T1/00
CPC分类号： G06T1/0028 , G06T1/005 , G06T2201/0065 , G06T2201/0081 , G07D7/0032 , G07D7/20
摘要： Techniques for improving detection of watermarks in content that has undergone a lossy transformation. One of the techniques is used when the message that is contained in a watermark belonging to a digital representation that is derived from an original watermarked digital representation cannot be decoded. The technique obtains information about the watermark by comparing the watermark vector for the watermark that cannot be decoded with a replica of the watermark vector from the original watermarked digital representation. The replica is made using the message. Depending on the degree of similarity, the watermark's presence and some of its characteristics may be determined. Another technique improves the robustness of watermarks that are used for authentication by employing a short (even single-bit) watermark vector to make the watermark and using the message needed for the authentication to determine where the watermark is located in the digital representation. Authentication of a digital representation is done by determining whether the watermark is present in the digital representation. In another technique, detection of the presence of a watermark is used to determine what areas of a digital representation have been subject to alteration. Techniques for synchronizing digital representations for watermark detection and other purposes include adding marks whose locations can be automatically detected only with the help of information that is external to the digital representation, such as a key, and adding marks to a sequence of digital representations and detecting the marks by summing the sequence.
摘要翻译：该方法包括进行比较的数字记录的部分并从模拟制成在部分的原始数字表示（105）以形成具有。的比较结果来确定的矿度的记录图案和图案原始数字表示（111）之间的不相似性。非相似度被用于确定性地矿无论模拟形式是原始模拟形式。独立claimsoft因此包括用于成模拟形式隐藏的消息的方法。

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