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公开(公告)号：US20090136026A1
公开(公告)日：2009-05-28
申请号：US12295650
申请日：2007-03-29
CPC分类号： G06T1/005 , G06T2201/0065 , G06T2201/0083 , H04L9/065 , H04L2209/608
摘要： The invention relates to embedding a spread spectrum watermark in a data signal as well as to detection of the embedded watermark. A data signal (4) is encrypted (15) or received in the form of an encrypted data signal (9), the signal being encrypted by modifying (3) it in accordance with one or more entries of a look-up-table (2) in which an encryption table (6) is stored. The encryption is carried out by a first computing device (15) such as a server device. The watermark is actually embedded while decrypting (13) the signal. This takes place in a second computing device (16), possibly in a client device, in a similar manner The client device employs a decryption table (8), which is a modified (i.e. watermarked) version of the encryption table (6). The decryption table may generated by the server and securely communicated to the client. The data signal is decrypted in accordance with entries of a look-up-table (12). The look-up-tables (2,12) in server and client are addressed by the same sequence of pointers generated by respective index generators (1). The mismatch between encryption table (6) and decryption table (8) causes the de-signal (14) to have an embedded watermark.
摘要翻译： 本发明涉及在数据信号中嵌入扩频水印以及嵌入水印的检测。 数据信号（4）被加密（15）或以加密数据信号（9）的形式接收，该信号通过根据查找表的一个或多个条目修改（3） 2），其中存储加密表（6）。 加密由诸如服务器设备的第一计算设备（15）执行。 在解密（13）信号时实际嵌入水印。 这可以以类似的方式在可能在客户端设备中的第二计算设备（16）中进行。客户端设备使用作为加密表（6）的修改（即加水印）版本的解密表（8）。 解密表可以由服务器生成并且安全地传送给客户机。 数据信号根据查找表（12）的条目解密。 服务器和客户机中的查找表（2,12）由相应的索引生成器（1）生成的相同的指针序列进行寻址。 加密表（6）与解密表（8）之间的失配导致去信号（14）具有嵌入的水印。
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公开(公告)号：US20080301456A1
公开(公告)日：2008-12-04
申请号：US12097522
申请日：2006-12-15
IPC分类号： H04L9/06
CPC分类号： G11B20/00086 , G06F21/16 , G06T1/0071 , G06T2201/0063 , G06T2201/0064 , G11B20/00884 , H04N5/765 , H04N5/85 , H04N5/913 , H04N21/2541 , H04N21/4627 , H04N21/8358 , H04N2005/91335 , H04N2201/323
摘要： The invention relates to a watermark generation method for generating watermarks to be embedded in digital media, where said watermark is generated by combining at least two watermark patterns from a set of watermark patterns. The set of watermark patterns are divided into at least two subsets of watermark patterns, and the subsets are hierarchically related and the watermark patterns in said watermark are directly related watermark patterns. Directly related means that the watermark patterns are related like parent and child in a hierarchical structure e.g. a tree structure. Further, the invention relates to an apparatus adapted to generate watermarks to be embedded in media.
摘要翻译： 本发明涉及一种水印生成方法，用于产生要嵌入在数字媒体中的水印，其中通过从一组水印图案中组合至少两个水印图案来生成所述水印。 所述水印图案集合被划分为至少两个水印图案子集，并且所述子集是分层相关的，并且所述水印中的水印图案是直接相关的水印图案。 直接相关意味着水印图案与分层结构中的父和子相关联，例如 树结构。 此外，本发明涉及适于产生要嵌入媒体的水印的装置。
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公开(公告)号：US20080250240A1
公开(公告)日：2008-10-09
申请号：US12089755
申请日：2006-10-06
IPC分类号： H04L9/00
CPC分类号： G06T1/005 , G06T2201/0065 , G06T2201/0081 , G10L19/018 , H04N1/00204 , H04N1/00244 , H04N1/32336
摘要： A system and a method for secure remote informed watermark detection making use of a side-information. The system in overview comprises a remote detector and a server computing system wherein a database with side-information assigned to specific descriptors of data signals is stored at the server computing system and wherein a remote detector intending to identify the watermark of a data signal will derive the descriptor of the data signal and subsequently contact the trusted server computing system in order to obtain the necessary side-information for the informed watermark detection.
摘要翻译： 一种使用侧信息的安全远程通知水印检测的系统和方法。 该系统概述包括远程检测器和服务器计算系统，其中具有分配给数据信号的特定描述符的侧信息的数据库被存储在服务器计算系统中，并且其中将导出旨在识别数据信号的水印的远程检测器 数据信号的描述符，并随后与受信任的服务器计算系统联系，以便获得通知水印检测所需的侧信息。
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公开(公告)号：US20080240435A1
公开(公告)日：2008-10-02
申请号：US12093690
申请日：2006-11-06
IPC分类号： H04L9/00
CPC分类号： G06T1/0028 , G06T2201/0083 , G06T2201/0202
摘要： Disclosed are a method and a system for secure watermark embedding in a server-client configuration (60,70). The method comprises encrypting (210) the data signal (x) and generating (240) a decryption key wherein a watermark (Wi) is included. The client decrypts (420) the encrypted data signal in order to obtain a watermarked data signal (xw). In accordance with the invention, the encryption mechanism and decryption key are made dependent on a perceptual mask (m1,m2) so as eventually make the embedded watermark more robust.
摘要翻译： 公开了一种用于在服务器 - 客户端配置中嵌入安全水印的方法和系统（60,70）。 该方法包括加密（210）数据信号（x）并产生（240）解密密钥，其中包括水印（W SUB）。 客户端解密（420）加密的数据信号，以便获得加水印的数据信号（x ）。 根据本发明，加密机制和解密密钥取决于感知掩码（m 1，m 2），以便最终使嵌入的水印更加鲁棒。
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公开(公告)号：US10045430B2
公开(公告)日：2018-08-07
申请号：US12864520
申请日：2009-01-26
摘要： A lighting system and a method for a operating a lighting system, enabling to obtain an identification tag (7) comprised in lighting design data (5) directly from an output beam (3), i.e. from the emitted light of the at least one lighting unit (2). It is thus possible to trace any unauthorized distribution of a lighting design by monitoring the emitted light without the need to directly access the controller or any other part of the lighting system.
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公开(公告)号：US20120087550A1
公开(公告)日：2012-04-12
申请号：US13378208
申请日：2010-06-17
申请人： Antonius Hermanus Maria Akkermans , Sabri Boughorbel , Dirk Jeroen Breebaart Breebaart , Alphons Antonius Maria Lambertus Bruekers , Berk Gokberk , Koen Theo Johan De Groot , Emile Josephus Carlos Kelkboom , Thomas Andreas Maria Kevenaar , Aweke Negash Lemma
发明人： Antonius Hermanus Maria Akkermans , Sabri Boughorbel , Dirk Jeroen Breebaart Breebaart , Alphons Antonius Maria Lambertus Bruekers , Berk Gokberk , Koen Theo Johan De Groot , Emile Josephus Carlos Kelkboom , Thomas Andreas Maria Kevenaar , Aweke Negash Lemma
IPC分类号： G06K9/00
CPC分类号： G06K9/0008 , G06K9/00067 , G06K9/036 , G06K9/629 , G06K9/6292
摘要： A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrolment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of xr, yr, and angle αr. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.
摘要翻译： 本发明的基本思想是当生成个体的生物特征模板时，选择性地采用至少两种不同的特征提取过程中的一种。 个体向生物特征提供生物特征，例如指纹，虹膜，耳朵，面部等，从中可以将生物特征数据导出到注册机构的传感器。 在下文中，要讨论的属性将是指纹，即使可以使用任何合适的生物特征属性。 从指纹，导出生物特征数据的位置参考点。 可以使用多种已知方法中的任何适当的方法来实现位置参考点的推导。 这样的参考点可以是核心的位置，三角形，细节坐标的加权平均值，或类似的。 通常，参考点包括表示为由xr，yr和角度αr表示的三维坐标的指纹的核心。 针对导出的位置参考点计算贡献指标，并且确定导出的位置参考点是否可以被认为是可靠的。 根据导出的参考点的可靠性，选择两个不同特征提取过程之一; 使用导出的参考点不变的方法来提取第一特征集，或者使用考虑到导出的参考点的方法。 参考点的估计越好，参考点依赖性提取方法越可靠。 最后，使用提取的第一特征集生成生物特征模板。
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公开(公告)号：US07546467B2
公开(公告)日：2009-06-09
申请号：US10509548
申请日：2003-02-26
IPC分类号： H04L9/00
CPC分类号： G11B20/00891 , G10L19/018 , G10L19/02 , G11B20/00086
摘要： A method of generating a watermark signal, embedding the watermark signal within a multimedia signal, and subsequently detecting the watermark signal is described. The watermark signal is the sum of two sequences of values, the second sequence of values being a circularly shifted version of the first sequence.
摘要翻译： 描述了一种产生水印信号，在水印信号内嵌入水印信号，随后检测水印信号的方法。 水印信号是两个值序列的和，第二个序列是第一个序列的循环版本。
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公开(公告)号：US07546466B2
公开(公告)日：2009-06-09
申请号：US10509413
申请日：2003-02-26
CPC分类号： G11B20/00891 , G10L19/018 , G10L19/02 , G11B20/00086
摘要： Method and apparatus are described for compensating for time offset in a received signal, so as to correctly align the frame sequence of a received signal to a sequence of transmitted symbols. Each symbol extends over Ts signal samples. The received signal is first divided into a sequence of frames of length Ts, and then each framedivided into a multiplicity of Nb sub-frames. Subsequently, Nb sequences of values are formed, where every successive value in each sequence is derived from the corresponding sub-frame within each successive frame. Each of the Nb sequences is an estimate for the correctly aligned sequence of transmitted symbols.
摘要翻译： 描述了用于补偿接收信号中的时间偏移的方法和装置，以便将接收到的信号的帧序列正确地对准发射符号序列。 每个符号都延伸到Ts信号样本上。 接收到的信号首先被划分成长度为Ts的帧序列，然后被分成多个Nb子帧。 随后，形成Nb序列，其中每个序列中的每个连续值从每个连续帧内的相应子帧导出。 每个Nb序列是发送符号的正确对齐序列的估计。
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公开(公告)号：US07266466B2
公开(公告)日：2007-09-04
申请号：US10509411
申请日：2003-02-26
IPC分类号： H04B1/10
CPC分类号： G10L19/018 , G11B20/00891
摘要： Method and apparatus are described for compensating for a linear time scale change in a received signal, so as to correctly rescale the frame sequence of the received signal. Firstly, an initial estimate of the sequence of symbols is extracted from the received signal. Successive estimates of correctly time scaled sequences of the symbols are then generated by interpolating the values of the initial estimates.
摘要翻译： 描述了用于补偿接收信号中的线性时标变化的方法和装置，以便正确地重新缩放接收信号的帧序列。 首先，从接收到的信号中提取符号序列的初始估计。 然后通过内插初始估计值来生成符号的正确时间缩放序列的连续估计。
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20.发明授权System and method for verifying the identity of an individual by employing biometric data features associated with the individual 有权通过采用与个体相关联的生物特征数据特征来验证个体身份的系统和方法公开(公告)号：US09160522B2
公开(公告)日：2015-10-13
申请号：US13516082
申请日：2010-12-15
CPC分类号： H04L9/00 , G06F21/32 , G06F2221/2129 , H04L9/28 , H04L9/32 , H04L9/3231 , H04L9/3247
摘要： The invention relates to a system for verifying the identity of an individual by employing biometric data features associated with the individual, which system comprises at least one or more hardware components, an enrollment means, and a verifying means, wherein said enrollment means are arranged in deriving a first biometric template data, said first biometric template data being secret and associated with a first set of first biometric data features of said individual, and in receiving a further set of first biometric data features of said individual, and in deriving a further biometric template data associated with said further set of first biometric data, and wherein said verifying means are arranged in comparing the first biometric template data with the further biometric template data to check for correspondence, wherein the identity of the individual is verified if correspondence exists. The invention aims to provide a solution to the above identified drawbacks and thereto at least one of said hardware components is provided with at least one component specific data feature associated therewith and wherein said enrollment means are arranged in associating at least one of said component specific data features with said biometric template data.
摘要翻译： 本发明涉及一种用于通过采用与该个体相关联的生物特征数据特征来验证个体的身份的系统，该系统包括至少一个或多个硬件组件，注册装置和验证装置，其中所述注册装置被布置在 导出第一生物特征模板数据，所述第一生物测定模板数据是秘密的并且与所述个体的第一组第一生物统计数据特征相关联，并且在接收所述个体的另一组第一生物特征数据特征，并且在导出另一生物特征 与所述另外的第一生物统计数据集相关联的模板数据，并且其中所述验证装置被布置为将所述第一生物测定模板数据与所述另外的生物测定模板数据进行比较以检查对应关系，其中，如果存在对应关系则验证个体的身份。 本发明旨在提供一种解决上述确定的缺陷的方案，并且至少一个所述硬件组件具有与其相关联的至少一个组件特定数据特征，并且其中所述注册装置被布置为将至少一个所述组件特定数据 具有所述生物特征的模板数据。
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