专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US07489798B2 Method and apparatus for detecting a watermark in a signal 失效
标题翻译：用于检测信号中的水印的方法和装置
公开(公告)号：US07489798B2
公开(公告)日：2009-02-10
申请号：US10596329
申请日：2004-11-24
申请人： Minne Van Der Veen , Aweke Negash Lemma
发明人： Minne Van Der Veen , Aweke Negash Lemma
IPC分类号： G06K9/00
CPC分类号： G10L19/018
摘要： The invention relates to a system for detecting a watermark using informed detection. A first signal potentially having a watermark embedded is received (601) as is a second signal corresponding to the original signal. The signals are segmented (605) into symbol segments. For each symbol segment a first characteristic is determined (607) for a first section and a second characteristic is determined (609) for a second section in response to the first and second signals in those sections. Specifically, ratios between average envelopes are determined. Thus, the first and second characteristic is indicative of the variations of the envelope during a watermark symbol. A watermark symbol estimate is determined (611) from the first and second characteristic. A sequence of estimated watermark symbols is compared to reference watermark symbols and the presence of a watermark symbol is determined (615) depending on the comparison. The invention is particularly suitable for improved detection of a multiplicative watermark.
摘要翻译：本发明涉及使用通知检测来检测水印的系统。接收到可能具有嵌入水印的第一信号（601），就像对应于原始信号的第二信号一样。信号被分段（605）成符号段。对于每个符号段，响应于这些部分中的第一和第二信号，确定第一部分的第一特性（607）和第二部分的第二特性（609）。具体来说，确定平均包络之间的比率。因此，第一和第二特征指示在水印符号期间的包络的变化。从第一和第二特征确定水印符号估计（611）。将估计水印符号的序列与参考水印符号进行比较，并且根据比较确定水印符号的存在（615）。本发明特别适用于改进的乘法水印的检测。

32. 发明申请

US20080253476A1 Method and System for Enabling Collusion Resistant Watermarking 审中-公开
标题翻译：实现抗串扰水印的方法与系统
公开(公告)号：US20080253476A1
公开(公告)日：2008-10-16
申请号：US12066685
申请日：2006-09-12
申请人： Aweke Negash Lemma , Minne Van Der Veen
发明人： Aweke Negash Lemma , Minne Van Der Veen
IPC分类号： H04L25/49
CPC分类号： G06T1/0071 , G06T1/005 , G06T2201/0052 , G06T2201/0053 , G06T2201/0063
摘要： A method and a system for modifying a bitstream signal for enabling collusion resistant bitstream watermarking. The method comprises dividing a bitstream spectral signal X[k] of the bitstream signal bx into a first signal (302) and a second signal (304); multiplying the first signal (302) by a first modification signal (306) and outputting a modified first signal (314); performing a transform operation on said second signal (304) for obtaining a transformed second signal (308); multiplying said transformed second signal (308) by a second modification signal (310) and outputting a second modified signal (312); subtracting said second modified signal (312) from said first modified signal (314) and outputting a modified bitstream spectral signal X′[k] suitable for obtaining a modified bitstream signal b′x of said bitstream signal bx. Thus an efficient manner of applying a collusion resistant property for already encoded contents is provided.
摘要翻译：一种用于修改比特流信号以实现防串扰比特流水印的方法和系统。该方法包括将比特流信号bx的比特流频谱信号X [k]分成第一信号（302）和第二信号（304）; 将第一信号（302）乘以第一修改信号（306）并输出修改的第一信号（314）; 对所述第二信号（304）执行变换操作以获得变换的第二信号（308）; 将所述经变换的第二信号（308）乘以第二修改信号（310）并输出第二修改信号（312）; 从所述第一修改信号（314）中减去所述第二修改信号（312），并输出适于获得所述比特流信号bx的修改的位流信号b'x的修改的比特流频谱信号X'[k]。因此，提供了对已经编码的内容应用防串扰属性的有效方式。

33. 发明申请

US20070168673A1 Method of allocating payload bits of a watermark 审中-公开
标题翻译：分配水印的有效负载比特的方法
公开(公告)号：US20070168673A1
公开(公告)日：2007-07-19
申请号：US10596928
申请日：2005-01-12
申请人： Minne Van Der Veen , Aweke Lemma , Antonius Adrianus Kalker
发明人： Minne Van Der Veen , Aweke Lemma , Antonius Adrianus Kalker
IPC分类号： H04L9/00
CPC分类号： G11B20/00181 , G10L19/018 , G11B20/00086 , G11B20/00144 , G11B20/00289 , G11B20/00557 , G11B20/00884
摘要： A method of dynamically allocating payload bits in a watermarking system (10) is provided. The method including steps of: (a) determining one or more parameters to be conveyed in bits of a payload to be included in watermark information for embedding in programme content; (b) dynamically allocating the bits to corresponding of the one or more parameters so as to represent the one or more parameters in the payload; (c) including the payload in the watermark information; and (d) embedding the watermark information including the payload into the programme content. Such dynamic allocation of payload bits is capable of providing more effective use of payload capacity.
摘要翻译：提供了一种在水印系统（10）中动态分配有效负载比特的方法。该方法包括以下步骤：（a）确定要包含在用于嵌入节目内容的水印信息中的有效载荷的比特中要传送的一个或多个参数; （b）将所述比特动态地分配给所述一个或多个参数的对应，以便表示所述有效载荷中的一个或多个参数; （c）在水印信息中包括有效载荷; 和（d）将包括有效载荷的水印信息嵌入到节目内容中。有效载荷比特的这种动态分配能够提供更有效地使用有效负载能力。

34. 发明申请

US20070064937A1 Method and apparatus for encoding or decoding a bitstream 审中-公开
标题翻译：用于对比特流进行编码或解码的方法和装置
公开(公告)号：US20070064937A1
公开(公告)日：2007-03-22
申请号：US10580503
申请日：2004-11-23
申请人： Adriaan Van Leest , Minne Van Der Veen , Alphons Antonius Maria Bruekers
发明人： Adriaan Van Leest , Minne Van Der Veen , Alphons Antonius Maria Bruekers
IPC分类号： H04N7/167
CPC分类号： H04N19/59 , H04N19/13 , H04N19/132 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/40 , H04N19/467 , H04N19/48 , H04N19/93
摘要： The invention relates to a system for re-encoding bitstreams for content signals. A re-encoder (101) receives a bit-stream comprising e.g. an MPEG-2 encoded signal. The receiver (109) feeds the bitstream to an extraction processor (111) which extracts non-essential information from the bitstream thereby generating a reduced bitstream which is still MPEG-2 compliant. The non-essential information, which specifically may be higher frequency transform coefficients, is re-encoded in a re-encode processor (113) using a non-MPEG-2 encoding principle. The encoding may be optimised for the characteristics of the non-essential information resulting in a more efficient encoding. The re-encoded data is inserted in user data section of the reduced bit stream by a combine processor (115). Thus, an effective reduction in the size of the bitstream may be achieved. A decoder (107) may extract the re-encoded data from the user data section, regenerate the original non-essential information and insert this in the reduced bitstream. Specifically, the original bitstream may be regenerated. The approach may specifically be used for reversible bitstream watermarking that which does not increase the size of the bitstream.
摘要翻译：本发明涉及一种用于重新编码内容信号的比特流的系统。一个重新编码器（101）接收一个比特流，包括例如 MPEG-2编码信号。接收器（109）将比特流馈送到提取处理器（111），其从比特流中提取非必要信息，从而生成仍然符合MPEG-2标准的缩减比特流。可以使用非MPEG-2编码原理，在重新编码处理器（113）中重新编码非特定信息，具体可以是更高的频率变换系数。可以针对非必要信息的特性优化编码，从而产生更有效的编码。重新编码的数据通过组合处理器（115）插入到缩减比特流的用户数据部分中。因此，可以实现比特流的大小的有效减小。解码器（107）可以从用户数据部分提取重新编码的数据，再生原始非必要信息并将其插入到缩减比特流中。具体地说，可以再生原始比特流。该方法可以具体用于不增加比特流大小的可逆比特流水印。

35. 发明申请

US20070052560A1 Bit-stream watermarking 审中-公开
标题翻译：位流水印
公开(公告)号：US20070052560A1
公开(公告)日：2007-03-08
申请号：US10557681
申请日：2004-05-19
申请人： Minne Van Der Veen , Aweke Lemma , Alphons Antonius Eindhoven
发明人： Minne Van Der Veen , Aweke Lemma , Alphons Antonius Eindhoven
IPC分类号： H03M7/34
CPC分类号： G10L19/018 , G06T1/0035 , G06T2200/28 , G06T2201/0052 , G10L19/002 , G10L19/0204 , G10L19/167 , G11B20/00086 , G11B20/00891 , H04N5/913 , H04N9/8042 , H04N2005/91335
摘要： The present invention relates to methods, devices, a media signal and a recorded medium for watermarks embedded in the sub-band domain of compressed media. Watermarks (w[n]) are embedded into the sub-band signals (xi−1[n], xi[n], xi+1[n]) of at least one selected sub-band of a compressed bit-stream (bk) using a watermark inserting unit (18). In this way there is no need to fully decode and re-encode the media signal for embedding the watermark. The watermark is embedded in selected sub-bands (e.g. sub-bands 7-15 of 32). In a preferred embodiment, the selected sub-bands are upsampled before embedding and downsampled therafter to avoid aliasing. The invention also allows embedding multiple watermarks in different sub-bands (e.g. one watermark in sub-bands 7-11, and a different watermark in sub-bands 12-16).
摘要翻译：本发明涉及嵌入在压缩介质的子带域中的水印的方法，装置，媒体信号和记录介质。水印（w [n]）被嵌入到子带信号（x 1，...，n， 1）使用水印插入单元（18）对压缩比特流（b＆lt;＆gt; k＆gt;）的至少一个所选子带进行编码。以这种方式，不需要完全解码和重新编码用于嵌入水印的媒体信号。水印被嵌入在选定的子带中（例如32的子带7-15）。在优选实施例中，所选择的子带在嵌入之前被上采样，并且在下采样以避免混叠。本发明还允许将多个水印嵌入不同的子带（例如子带7-11中的一个水印，以及子带12-16中的不同水印）。

36. 发明申请

US20060168448A1 Raising detectability of additonal data in a media signal having few frequency components 审中-公开
标题翻译：提高具有较少频率成分的媒体信号中的附加数据的可检测性
公开(公告)号：US20060168448A1
公开(公告)日：2006-07-27
申请号：US10560679
申请日：2004-06-15
申请人： Minne Van Der Veen , Aweke Lemma , Javier Aprea , Alphons Antonius Maria Bruekers
发明人： Minne Van Der Veen , Aweke Lemma , Javier Aprea , Alphons Antonius Maria Bruekers
IPC分类号： H04L9/00 , H04N7/16
CPC分类号： H04N1/32149 , G06T1/005 , G06T2201/0052 , G06T2201/0065 , G10L19/018 , H04N1/3216 , H04N1/32203 , H04N1/32352 , H04N7/08 , H04N2201/327
摘要： The present invention relates to a methods, devices, a media signal as well as an information storage medium related to embedding additional data in a media signal. A first adding unit (12) mixes the media signal (x) with a noise signal (n) in order to provide a modified media signal (x+n), and a combiner unit (14) combines additional data (w) with the modified media signal (x+n) through multiplying the modified media signal with the additional data in order to provide a host modifying media signal (mw). In this way the additional data can be detected with a higher certainty in an output signal (y) if the media signal (x) includes few frequency components.
摘要翻译：本发明涉及一种方法，设备，媒体信号以及与在媒体信号中嵌入附加数据有关的信息存储介质。第一加法单元（12）将媒体信号（x）与噪声信号（n）混合，以便提供修改的媒体信号（x + n），并且组合器单元（14）将附加数据（w）与通过将修改的媒体信号与附加数据相乘来修改媒体信号（x + n），以提供主机修改媒体信号（m≠W）。以这种方式，如果媒体信号（x）包括很少的频率分量，则在输出信号（y）中可以更高的确定性来检测附加数据。

37. 发明申请

US20060161776A1 Embedding watermarks for protecting multiple copies of a signal 审中-公开
标题翻译：嵌入水印以保护信号的多个副本
公开(公告)号：US20060161776A1
公开(公告)日：2006-07-20
申请号：US10564295
申请日：2004-07-02
申请人： Minne Van Der Veen , Antonius Adrianus Kalker
发明人： Minne Van Der Veen , Antonius Adrianus Kalker
IPC分类号： H04L9/00
CPC分类号： G11B20/00884 , G11B20/00086 , G11B20/00173
摘要： The present invention relates to methods, devices and a signal related to simplifying the embedding of watermarks in different copies of a media signal (x). The watermarking process is split into two parts, one that is based on signal dependent properties and one that is based on watermark specific properties. The signal dependent properties are determined in advance, while the watermark specific properties are determined at the time of delivery of the media signal. The signal dependent watermarking properties (p) of a media signal (x) are determined in a properties determining unit (14) and stored in a signal properties store (16), such that the signal dependent properties can be used for embedding more than one watermark (WA, WB, WC) in different copies of the media signal. In this way it is possible to embed watermarks in multiple copies of the same media signal with small time delays.
摘要翻译：本发明涉及方法，设备和与简化在媒体信号（x）的不同副本中嵌入水印有关的信号。水印过程被分为两部分，一个是基于信号相关属性，一个基于水印特定属性。信号相关属性是预先确定的，而在传送媒体信号时确定水印特定属性。媒体信号（x）的信号相关水印属性（p）在属性确定单元（14）中确定并存储在信号属性存储器（16）中，使得信号相关属性可用于嵌入多于一个在媒体信号的不同副本中的水印（W SUB，W B，W C C）。以这种方式，可以以小的时间延迟将水印嵌入相同媒体信号的多个副本中。

38. 发明申请

US20060140440A1 Reversible watermarking of digital signals 审中-公开
标题翻译：数字信号的可逆水印
公开(公告)号：US20060140440A1
公开(公告)日：2006-06-29
申请号：US10542139
申请日：2004-01-13
申请人： Minne Van Der Veen , Alphons Antonius Bruekers , Adriaan Van Leest , Stephane Cavin
发明人： Minne Van Der Veen , Alphons Antonius Bruekers , Adriaan Van Leest , Stephane Cavin
IPC分类号： G06K9/00
CPC分类号： H04N19/467 , G10L19/018 , G11B20/00086
摘要： The invention relates to methods, devices, a system of devices and a signal where additional information is embedded in media content. The system includes a device (10) providing additional information (O, D) in a signal (y) having media content, comprising a first mapping unit (14) mapping the amplitude values of the media content onto first new values, and a multiplexing unit (16) inserting the additional information into the mapped media content. The system also includes a device (12) for receiving additional information (O, D) in a signal (y) having media content, comprising a demultiplexing unit (22) arranged to receive a signal including media content (xQ) the amplitude values of which have been mapped onto first new values together with additional embedded information (O, D), and remove the additional information from the mapped media content. The invention allows insertion of watermarks into media content such as audio.
摘要翻译：本发明涉及方法，设备，设备系统以及其中附加信息被嵌入在媒体内容中的信号。该系统包括在具有媒体内容的信号（y）中提供附加信息（O，D）的设备（10），包括将媒体内容的幅度值映射到第一新值的第一映射单元（14）单元（16）将附加信息插入到映射的媒体内容中。该系统还包括用于在具有媒体内容的信号（y）中接收附加信息（O，D）的设备（12），包括解复用单元（22），其被布置为接收包括媒体内容（x < / SUB>），其幅度值与附加嵌入信息（O，D）一起映射到第一新值上，并从映射的媒体内容中移除附加信息。本发明允许将水印插入诸如音频的媒体内容中。

39. 发明申请

US20050177738A1 Watermark embedding and retrieval 审中-公开
标题翻译：水印嵌入和检索
公开(公告)号：US20050177738A1
公开(公告)日：2005-08-11
申请号：US10513746
申请日：2003-04-15
申请人： Minne Van Der Veen , Alphons Antonius Maria Bruekers
发明人： Minne Van Der Veen , Alphons Antonius Maria Bruekers
IPC分类号： G06T1/00 , G10L19/00 , G11B20/00 , H04N1/387 , H04N7/26 , H04L9/32
CPC分类号： H04N21/8358 , H04N19/467
摘要： Fingerprinting is a technique to identify multimedia signals by extracting robust perceptual features of the signal contents and searching the extracted features in a database where titles, artists, etc. are stored. Watermarking is a technique of embedding payload data in a signal in an unobtrusive manner. The invention combines both techniques. A fingerprint (M(i)) is extracted (1) from a host signal (x) and stored in a database (5). A watermark (w(i)) is embedded (2) in the host signal by modifying (21) the signal, such that the fingerprint (M′(i)) of the modified signal (x′) differs slightly from the original fingerprint. The difference is so small that the database considers them to be similar. At the receiver end, the fingerprint is extracted (3) from the watermarked signal and applied to the database, which responds by returning the original fingerprint of the signal. The embedded watermark is retrieved by subtracting (4) the original fingerprint supplied by the database from the fingerprint extracted from the host signal.
摘要翻译：指纹是通过提取信号内容的鲁棒感知特征并搜索存储标题，艺术家等的数据库中的提取特征来识别多媒体信号的技术。水印技术是以不引人注意的方式将有效载荷数据嵌入到信号中。本发明结合了两种技术。从主机信号（x）提取指纹（M（i））（1）并存储在数据库（5）中。通过修改（21）信号将修改信号（x'）的指纹（M'（i））与原始指纹略微不同，将水印（w（i））嵌入（2）。差异很小，数据库认为它们是相似的。在接收端，从水印信号中提取指纹（3），并将其应用于数据库，通过返回信号的原始指纹进行响应。通过从主机信号提取的指纹中减去（4）由数据库提供的原始指纹来检索嵌入水印。

40. 发明申请

US20100177888A1 WARERMARKING AND ENCRYPTION OF ENTROPY-CODED DATA USING ADDITIVE HUFFMAN TABLE 审中-公开
标题翻译：使用添加剂HUFFMAN表加密和加密熵编码数据
公开(公告)号：US20100177888A1
公开(公告)日：2010-07-15
申请号：US12667247
申请日：2008-07-01
申请人： Aweke Negash Lemma , Mehmet Utku Celik , Minne Van Der Veen , Stefan Katzenbeisser
发明人： Aweke Negash Lemma , Mehmet Utku Celik , Minne Van Der Veen , Stefan Katzenbeisser
IPC分类号： H04L9/28 , H03M7/00
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N7/1675 , H04N19/13 , H04N19/467 , H04N19/48 , H04N21/2347 , H04N21/4405 , H04N21/8358
摘要： A secure forensic watermarking system is disclosed that distributes the same encrypted content to all users. The decryption key is different for each user, so that the decrypted content differs slightly from the original, i.e. is watermarked. Forensic tracking is possible by distributing unique decryption keys to individual users. The invention allows a forensic mark to be securely embedded in the compressed domain signal. In an embodiment of this invention, the content (x) and an encryption sequence (r) are entropy encoded using a homomorphic Huffman table. A homomorphic Huffmann table is a table H having the property that there exists an operation f( ) such that H-1 (f(H(a),H(b)))=a+b.
摘要翻译：公开了一种安全的法医水印系统，其将相同的加密内容分发给所有用户。解密密钥对于每个用户是不同的，使得解密的内容与原始内容略有不同，即被加密。通过向个别用户分发唯一的解密密钥可以进行取证跟踪。本发明允许将法医标记安全地嵌入到压缩域信号中。在本发明的一个实施例中，内容（x）和加密序列（r）使用同态霍夫曼表进行熵编码。同形霍夫曼表是具有存在使得H-1（f（H（a），H（b）））= a + b的操作f（）的性质的表H。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式