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公开(公告)号：US07246239B2
公开(公告)日：2007-07-17
申请号：US09938870
申请日：2001-08-23
CPC分类号： H04N21/4425 , G06T1/0021 , G06T2201/0051 , G06T2201/0065 , H04N17/004 , H04N21/8358
摘要： The invention provides methods for embedding digital watermarks for authentication of printed objects, and corresponding methods for authenticating these objects. One aspect of the invention is a method of embedding a digital watermark in a digital image to be printed on an object. The method embeds an auxiliary signal in the digital image so that the auxiliary signal is substantially imperceptible, yet machine readable. It converts the image to a halftone image using an inherently unstable halftone screen structure that is likely to cause ink flow errors when reproduced. The errors introduced by reproducing the unstable halftone screen structure incorrectly are automatically detectable by reading the auxiliary signal.
摘要翻译： 本发明提供了用于嵌入用于打印对象认证的数字水印的方法以及用于认证这些对象的相应方法。 本发明的一个方面是将数字水印嵌入到要打印在对象上的数字图像中的方法。 该方法在数字图像中嵌入辅助信号，使得辅助信号基本上不可察觉，但是机器可读。 它使用固有不稳定的半色调屏幕结构将图像转换为半色调图像，在重现时可能会导致墨水流量错误。 通过读取辅助信号可以自动检测通过不正确地再现不稳定半色调屏幕结构引入的错误。
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公开(公告)号：US08006092B2
公开(公告)日：2011-08-23
申请号：US11779061
申请日：2007-07-17
IPC分类号： H04L9/32
CPC分类号： H04N21/4425 , G06T1/0021 , G06T2201/0051 , G06T2201/0065 , H04N17/004 , H04N21/8358
摘要： The invention provides methods for embedding digital watermarks for authentication of printed objects, and corresponding methods for authenticating these objects. One aspect of the invention is a method of embedding a digital watermark in a digital image to be printed on an object. The method embeds an auxiliary signal in the digital image so that the auxiliary signal is substantially imperceptible, yet machine readable. It converts the image to a halftone image using a halftoning process. If copies are made of the printed image, the image characteristics change due a change in the halftoning process used to create the copies. These changes are detected to determine whether a suspect document is authentic.
摘要翻译： 本发明提供了用于嵌入用于打印对象认证的数字水印的方法以及用于认证这些对象的相应方法。 本发明的一个方面是将数字水印嵌入到要打印在对象上的数字图像中的方法。 该方法在数字图像中嵌入辅助信号，使得辅助信号基本上不可察觉，但是机器可读。 它使用半色调处理将图像转换为半色调图像。 如果由打印的图像构成复印件，则由于用于创建复印件的半色调处理的变化，图像特性变化。 检测到这些更改以确定可疑文档是否可信。
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3.发明授权公开(公告)号：US08144368B2
公开(公告)日：2012-03-27
申请号：US10723181
申请日：2003-11-26
申请人： Tony F. Rodriguez , Alastair M. Reed , Ravi K. Sharma , Osama M. Alattar , Brett T. Hannigan , Kenneth L. Levy , Hugh L. Brunk , Geoffrey B. Rhoads , Ammon E. Gustafson
发明人： Tony F. Rodriguez , Alastair M. Reed , Ravi K. Sharma , Osama M. Alattar , Brett T. Hannigan , Kenneth L. Levy , Hugh L. Brunk , Geoffrey B. Rhoads , Ammon E. Gustafson
CPC分类号： H04N1/32149 , B29C45/1418 , B42D25/29 , G06T1/0021 , G06T7/0002 , G06T2201/0064 , G06T2207/30144 , G07D7/0034 , G07D7/004 , H04N1/00002 , H04N1/00005 , H04N1/00037 , H04N1/00092 , H04N1/32208 , H04N1/32219 , H04N1/32261 , H04N1/32304 , H04N1/32309 , H04N2201/3205 , H04N2201/3207 , H04N2201/3226 , H04N2201/3233 , H04N2201/3239 , H04N2201/327 , H04N2201/3271
摘要： This disclosure describes methods for using embedded auxiliary signals in documents for copy detection and other applications. In on application, the auxiliary signal is formed as an array of elements selected from a set of print structures with properties that change differently in response to copy operations. These changes in properties of the print structures that carry the embedded auxiliary signal are automatically detectable. For example, the changes make the embedded auxiliary signal more or less detectable. The extent to which the auxiliary data is detected forms a detection metric used in combination with one or more other metrics to differentiate copies from originals. Examples of sets of properties of the print structures that change differently in response to copy operations include sets of colors (including different types of inks), sets of screens or dot structures that have varying dot gain, sets of structures with different aliasing effects, etc. Robust and fragile watermarks are used in Image Replacement Documents for a variety of applications. Digital watermarks act as on-board mediators in authentication of a variety of printed documents. Finally, digital watermarks are used to help manage quality of the scanners used in imaging systems.
摘要翻译： 本公开描述了在用于复制检测和其他应用的文档中使用嵌入式辅助信号的方法。 在应用中，辅助信号被形成为从一组打印结构中选择的元素的阵列，其具有响应于复制操作而改变的属性。 携带嵌入式辅助信号的打印结构的这些属性变化可以自动检测。 例如，这些改变使得嵌入式辅助信号或多或少被检测出来。 检测辅助数据的程度形成与一个或多个其他度量结合使用的检测度量，以区分副本与原件。 对于复制操作而改变不同的打印结构的属性集合的示例包括具有不同的点增益的颜色（包括不同类型的墨水），屏幕或点结构的集合，具有不同混叠效果的结构集合等 图像替换文档中使用了强大而脆弱的水印，用于各种应用。 数字水印作为各种印刷文件认证中的板载介质。 最后，数字水印用于帮助管理成像系统中使用的扫描仪的质量。
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公开(公告)号：US06782115B2
公开(公告)日：2004-08-24
申请号：US10282908
申请日：2002-10-28
IPC分类号： G06K900
CPC分类号： B42D25/29 , B29C45/1418 , G03H1/08 , G03H2001/0022 , G06T1/0021 , G06T2201/0083 , G07D7/0032 , G07D7/0034 , G07D7/004 , G07F7/08 , G07F7/086 , G07F7/12 , H04N1/00249 , H04N1/32219 , H04N1/32261 , H04N1/32304 , H04N2201/3205 , H04N2201/3207 , H04N2201/3215 , H04N2201/3226 , H04N2201/3233 , H04N2201/3239 , H04N2201/327 , H04N2201/3271 , H04N2201/3281
摘要： Methods for integrating digital watermarks into holograms, watermarked hologram structures, and related applications. One method creates a watermark image, and then embeds the watermark image into a holographic structure. The holographic structure is created using computer generated holography to create a digital representation of the holographic structure. This digital representation is recorded on a physical substrate using optical techniques or microlithography. As an alterative, a watermark signal is embedded in a physical holographic structure by embedding the signal into an image that is optically merged with the holographic structure as it is optically recorded, or by embedding the signal into an image or physical model from which the holographic structure is formed. Another approach the creates a halftone watermarked image, and forms the halftone watermarked image in the hologram by creating hologram dots corresponding to the dots in the halftone watermarked image.
摘要翻译： 将数字水印整合成全息图，水印全息图结构和相关应用的方法。 一种方法创建水印图像，然后将水印图像嵌入全息结构中。 使用计算机生成的全息术创建全息结构以创建全息结构的数字表示。 使用光学技术或微光刻将该数字表示记录在物理基板上。 作为替代，水印信号嵌入在物理全息结构中，通过将信号嵌入到与光学记录的全息结构光学合并的图像中，或者通过将信号嵌入图像或物理模型中，将全息图 结构形成。 另一种方法是产生半色调水印图像，并通过产生对应于半色调水印图像中的点的全息图点在全息图中形成半色调水印图像。
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公开(公告)号：US08355526B2
公开(公告)日：2013-01-15
申请号：US11090968
申请日：2005-03-23
IPC分类号： G06K9/00
CPC分类号： G03H1/041 , G03H1/0244 , G03H1/08 , G03H2001/0016 , G03H2001/0022 , G03H2210/40 , G03H2210/441 , G06K19/16 , G06Q20/341 , G06T1/0021 , G07D7/0032 , G07D7/0034 , G07F7/08 , G07F7/086 , G07F7/12 , H04N1/00249 , H04N2201/3215 , H04N2201/3233 , H04N2201/3281
摘要： The present invention relates generally to digital watermarking holographic structures. One method recites: creating a computer model; executing a transform domain iterative method to convert the computer model into a holographic structure; combining a digital watermark with the holographic structure; and conveying the combined digital watermark and holographic structure to a surface. Other combinations are provided and claimed as well.
摘要翻译： 本发明一般涉及数字水印全息结构。 一种方法说明：创建一个计算机模型; 执行变换域迭代方法将计算机模型转换为全息结构; 将数字水印与全息结构组合; 并将组合的数字水印和全息结构传送到表面。 也提供并要求保护其他组合。
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公开(公告)号：US07711564B2
公开(公告)日：2010-05-04
申请号：US10186175
申请日：2002-06-27
CPC分类号： G10L19/018 , H04N21/42203 , H04N21/8106 , H04N21/84
摘要： The presently claimed invention relates generally to steganography and fingerprinting or hashing. In one embodiment, a method includes: obtaining a first set of plural-bit data, the first set of plural-bit data corresponding to at least a portion of steganographically encoded data in a media signal in the form of a digital watermark; obtaining a second set of plural-bit data, the second set of pural-bit data corresponding to a fingerprint or hash of the media signal. THe fingerprint or hash includes a reduced-bit representation of the media signal, and the first set of plural-bit data is not dependent on information in the second set of plural-bit data. The method further includes carrying out a first action associated with the first set of plural-bit data; and carrying out a second action associated with the second set of plural-bit data. Other embodiments are described and claimed as well.
摘要翻译： 目前要求保护的发明一般涉及隐写术和指纹或散列。 在一个实施例中，一种方法包括：获得第一组多位数据，第一组多位数据对应于数字水印形式的媒体信号中的隐写编码数据的至少一部分; 获得第二组多位数据，第二组平均位数据对应于媒体信号的指纹或散列。 指纹或散列包括媒体信号的缩减比特表示，并且第一组多位数据不依赖于第二组多位数据中的信息。 该方法还包括执行与第一组多位数据相关联的第一动作; 以及执行与所述第二组多位数据相关联的第二动作。 其他实施例也被描述和要求保护。
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7.发明申请公开(公告)号：US20090233621A1
公开(公告)日：2009-09-17
申请号：US12426787
申请日：2009-04-20
IPC分类号： H04W4/02
CPC分类号： G01S5/0081 , H04W24/00 , H04W64/00
摘要： A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.
摘要翻译： 用于确定蜂窝网络中的位置和定时信息的系统包括与SCU通信的时空校准单元（SCU）和多个节点。 每个节点包括节点ping驱动器，其从小区站点的相应子集接收帧同步信息，并且将帧同步信息与使用本地节点时钟生成的相应接收计数标记相关联。 该系统还包括用户手机，其包括从服务小区站点和一个或多个相邻小区站点接收帧同步信息的手持机ping驱动程序，并且将帧同步信息与使用本地手持机时钟生成的相应接收计数戳相关联。 SCU使用来自节点和手机ping驱动程序的信息来确定手机位置。
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8.发明授权公开(公告)号：US08421675B2
公开(公告)日：2013-04-16
申请号：US12426787
申请日：2009-04-20
CPC分类号： G01S5/0081 , H04W24/00 , H04W64/00
摘要： A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.
摘要翻译： 用于确定蜂窝网络中的位置和定时信息的系统包括与SCU通信的时空校准单元（SCU）和多个节点。 每个节点包括节点ping驱动器，其从小区站点的相应子集接收帧同步信息，并且将帧同步信息与使用本地节点时钟生成的相应接收计数标记相关联。 该系统还包括用户手机，其包括从服务小区站点和一个或多个相邻小区站点接收帧同步信息的手持机ping驱动程序，并且将帧同步信息与使用本地手持机时钟生成的相应接收计数戳相关联。 SCU使用来自节点和手机ping驱动程序的信息来确定手机位置。
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公开(公告)号：US07930546B2
公开(公告)日：2011-04-19
申请号：US11619123
申请日：2007-01-02
IPC分类号： H04L9/00
CPC分类号： G10L25/48 , G10L19/018
摘要： Identification of media content, such as audio, can be performed through use of watermarking or fingerprinting (aka content signature) technologies. Aspects of these technologies may be combined to advantageous effect. For example, in dealing with the problem of fingerprint errors arising from object distortion, operations known from digital watermarking systems can be employed.
摘要翻译： 可以通过使用水印或指纹（也称为内容签名）技术来执行诸如音频的媒体内容的识别。 这些技术的方面可以组合到有利的效果。 例如，在处理由于对象失真引起的指纹错误的问题时，可以采用从数字水印系统所知的操作。
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公开(公告)号：US20100205445A1
公开(公告)日：2010-08-12
申请号：US12761230
申请日：2010-04-15
申请人： Hugh W. Anglin , Hugh L. Brunk , Jeremy Cattone , William C. Hein, III , Eric C. Hudson , Kevin C. Jones , Kenneth L. Levy , Tyler J. McKinley , Philip R. Patterson , Burt W. Perry , Geoffrey B. Rhoads , Phillip Andrew Seder , Steven W. Stewart
发明人： Hugh W. Anglin , Hugh L. Brunk , Jeremy Cattone , William C. Hein, III , Eric C. Hudson , Kevin C. Jones , Kenneth L. Levy , Tyler J. McKinley , Philip R. Patterson , Burt W. Perry , Geoffrey B. Rhoads , Phillip Andrew Seder , Steven W. Stewart
IPC分类号： H04L9/00
CPC分类号： G06T1/0021
摘要： Various improvements relating to digital watermarking and related technologies are detailed, including methods that enhance security and functionality, and new articles including watermarked puzzles and marked DNA.
摘要翻译： 详细介绍了与数字水印和相关技术有关的各种改进，包括增强安全性和功能性的方法，以及包含水印拼图和标记DNA的新文章。
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