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1.发明授权公开(公告)号：US07903868B2
公开(公告)日：2011-03-08
申请号：US11702585
申请日：2007-02-06
申请人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Won Hyung Lee , Kil Sang Yoo
发明人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Won Hyung Lee , Kil Sang Yoo
IPC分类号： G06K9/62
CPC分类号： G06T1/0057 , G06T2201/0052 , G06T2201/0083 , G06T2201/0202
摘要： A video fingerprint insertion apparatus is provided. A frequency domain selection unit selects a frequency domain into which a fingerprint is inserted, from frequency domains of a video; a fingerprint insertion position determination unit determines a position where the fingerprint is to be inserted, based on a fingerprint insertion determination value in the selected frequency domain; and a fingerprint insertion unit inserts a fingerprint bit stream whose insertion strength is controlled, to the position where the fingerprint is to be inserted.
摘要翻译： 提供了一种视频指纹插入装置。 频域选择单元从视频的频域中选择插入有指纹的频域; 指纹插入位置确定单元基于所选择的频域中的指纹插入确定值来确定要插入指纹的位置; 并且指纹插入单元将插入强度被控制的指纹比特流插入到要插入指纹的位置。
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2.发明申请公开(公告)号：US20080019577A1
公开(公告)日：2008-01-24
申请号：US11702585
申请日：2007-02-06
申请人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Won Hyung Lee , Kil Sang Yoo
发明人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Won Hyung Lee , Kil Sang Yoo
IPC分类号： G06K9/00
CPC分类号： G06T1/0057 , G06T2201/0052 , G06T2201/0083 , G06T2201/0202
摘要： A video fingerprint insertion apparatus is provided. A frequency domain selection unit selects a frequency domain into which a fingerprint is inserted, from frequency domains of a video; a fingerprint insertion position determination unit determines a position where the fingerprint is to be inserted, based on a fingerprint insertion determination value in the selected frequency domain; and a fingerprint insertion unit inserts a fingerprint bit stream whose insertion strength is controlled, to the position where the fingerprint is to be inserted.
摘要翻译： 提供了一种视频指纹插入装置。 频域选择单元从视频的频域中选择插入有指纹的频域; 指纹插入位置确定单元基于所选择的频域中的指纹插入确定值来确定要插入指纹的位置; 并且指纹插入单元将插入强度被控制的指纹比特流插入到要插入指纹的位置。
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3.发明授权公开(公告)号：US08107669B2
公开(公告)日：2012-01-31
申请号：US11785913
申请日：2007-04-20
申请人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Chee Sun Won , Sung Min Kim
发明人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Chee Sun Won , Sung Min Kim
CPC分类号： G06T1/0057 , G06T2201/0051 , H04N19/467
摘要： A video watermarking apparatus and method are provided, including an information provider for providing spatial domain segmentation information of an image with respect to a compressed video, a grouping unit for grouping the compressed video, based on the spatial domain segmentation information, and generating a grouped spatial domain, an extraction domain selector for selecting an extraction domain for extracting a watermark from the grouped spatial domain, and a watermark extractor for extracting a watermark bit inserted in the extraction domain.
摘要翻译： 提供了一种视频水印设备和方法，包括用于提供关于压缩视频的图像的空间域分割信息的信息提供器，用于基于空间域分割信息对压缩视频进行分组的分组单元，以及生成分组 空间域，用于从分组的空间域中选择用于提取水印的提取域的提取域选择器，以及用于提取插入到提取域中的水印位的水印提取器。
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公开(公告)号：US08081754B2
公开(公告)日：2011-12-20
申请号：US11802007
申请日：2007-05-18
申请人： Mi Suk Huh , Dae Youb Kim , Hwan Joon Kim
发明人： Mi Suk Huh , Dae Youb Kim , Hwan Joon Kim
CPC分类号： H04L9/0891 , H04L9/0836 , H04L63/062 , H04L63/065 , H04L63/104 , H04W12/04
摘要： A key update method and a key update apparatus are provided. The method includes storing data in a database of an update server, the data having an encoded updated node key in response to a node key update for a group; selecting necessary data, from among the data having the encoded updated node key, to calculate a key immediately prior to when the member is switched to the online mode, and generating member update data; and performing a key update with respect to the member using the member update data in a device corresponding to the member which has switched from the offline mode to the online mode.
摘要翻译： 提供了一种密钥更新方法和密钥更新装置。 所述方法包括：将数据存储在更新服务器的数据库中，所述数据响应于组的节点密钥更新而具有编码的更新节点密钥; 从具有编码的更新节点密钥的数据中选择必要的数据，以便在成员切换到在线模式之前计算密钥，并生成成员更新数据; 并且使用与从离线模式切换到在线模式的成员相对应的设备中的成员更新数据对成员进行密钥更新。
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公开(公告)号：US08374353B2
公开(公告)日：2013-02-12
申请号：US11819604
申请日：2007-06-28
申请人： Dae Youb Kim , Mi Suk Huh , Tae-Chul Jung , Hwan Joon Kim
发明人： Dae Youb Kim , Mi Suk Huh , Tae-Chul Jung , Hwan Joon Kim
IPC分类号： G06F21/00
CPC分类号： H04L9/0836 , H04L9/0891
摘要： A method and apparatus for updating a group key of a group corresponding to a binary tree are provided. The method includes updating keys of leaf nodes that correspond to new members, in response to a join of at least two new members joining the group; determining whether both of two child nodes of a single ancestor node are updated when updating a key of the single ancestor node of the leaf nodes; establishing one of the two child nodes as an update use node when both the two child nodes are updated; and updating a key of the ancestor node using the updating node. Thus, the group key may be effectively updated with respect to multi-join.
摘要翻译： 提供了一种用于更新与二叉树对应的组的组密钥的方法和装置。 所述方法包括响应于至少两个加入所述组的新成员的连接来更新对应于新成员的叶节点的密钥; 当更新叶节点的单个祖先节点的密钥时，确定单个祖先节点的两个子节点是否被更新; 当两个子节点都更新时，将两个子节点之一建立为更新使用节点; 以及使用所述更新节点来更新所述祖先节点的密钥。 因此，组密钥可以相对于多连接被有效地更新。
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6.发明授权公开(公告)号：US08094871B2
公开(公告)日：2012-01-10
申请号：US11711680
申请日：2007-02-28
申请人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Chee Sun Won , Sung Min Kim
发明人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Chee Sun Won , Sung Min Kim
CPC分类号： H04N19/467 , G06T1/0035 , G06T2201/0053
摘要： An apparatus and method for video watermarking are provided. The apparatus and method include receiving a bit stream encoded by a video encoder by a spatial domain information analyzer and extracting information from a spatial domain of an image with respect to code words forming the bit stream, grouping the code words for each segmented domain by a domain classifier based on the information from the spatial domain, determining a sign of the each segmented domain by a domain sign determiner and inserting a watermark in the each segmented domain according to the sign determined by the domain sign determiner by a watermark bit inserter.
摘要翻译： 提供了一种用于视频水印的设备和方法。 该装置和方法包括：通过空间域信息分析器接收由视频编码器编码的比特流，并且相对于形成比特流的码字从图像的空间域提取信息，将每个分段域的码字分组为 基于来自空间域的信息的域分类器，通过域签名确定器确定每个分段域的符号，并根据由水印位插入器由域标识确定器确定的符号在每个分段域中插入水印。
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7.发明申请公开(公告)号：US20110311098A1
公开(公告)日：2011-12-22
申请号：US13217131
申请日：2011-08-24
申请人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Chee Sun Won , Sung Min Kim
发明人： Hwan Joon Kim , Mi Suk Huh , Dae Youb Kim , Chee Sun Won , Sung Min Kim
IPC分类号： G06K9/00
CPC分类号： H04N19/467 , G06T1/0035 , G06T2201/0053
摘要： An apparatus and method for video watermarking are provided. The apparatus and method include receiving a bit stream encoded by a video encoder by a spatial domain information analyzer and extracting information from a spatial domain of an image with respect to code words forming the bit stream, grouping the code words for each segmented domain by a domain classifier based on the information from the spatial domain, determining a sign of the each segmented domain by a domain sign determiner and inserting a watermark in the each segmented domain according to the sign determined by the domain sign determiner by a watermark bit inserter.
摘要翻译： 提供了一种用于视频水印的设备和方法。 该装置和方法包括：通过空间域信息分析器接收由视频编码器编码的比特流，并且相对于形成比特流的码字从图像的空间域提取信息，将每个分段域的码字分组为 基于来自空间域的信息的域分类器，通过域签名确定器确定每个分段域的符号，并根据由水印位插入器由域标识确定器确定的符号在每个分段域中插入水印。
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公开(公告)号：US20080120329A1
公开(公告)日：2008-05-22
申请号：US11802007
申请日：2007-05-18
申请人： Mi Suk Huh , Dae Youb Kim , Hwan Joon Kim
发明人： Mi Suk Huh , Dae Youb Kim , Hwan Joon Kim
IPC分类号： G06F17/30
CPC分类号： H04L9/0891 , H04L9/0836 , H04L63/062 , H04L63/065 , H04L63/104 , H04W12/04
摘要： A key update method and a key update apparatus are provided. The method includes storing data in a database of an update server, the data having an encoded updated node key in response to a node key update for a group; selecting necessary data, from among the data having the encoded updated node key, to calculate a key immediately prior to when the member is switched to the online mode, and generating member update data; and performing a key update with respect to the member using the member update data in a device corresponding to the member which has switched from the offline mode to the online mode.
摘要翻译： 提供了一种密钥更新方法和密钥更新装置。 所述方法包括：将数据存储在更新服务器的数据库中，所述数据响应于组的节点密钥更新而具有编码的更新节点密钥; 从具有编码的更新节点密钥的数据中选择必要的数据，以便在成员切换到在线模式之前计算密钥，并生成成员更新数据; 并且使用与从离线模式切换到在线模式的成员相对应的设备中的成员更新数据对成员进行密钥更新。
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9.发明申请Method and apparatus for local domain management using device with local authority module 有权使用具有本地权限模块的设备进行本地域管理的方法和装置公开(公告)号：US20080118068A1
公开(公告)日：2008-05-22
申请号：US11819255
申请日：2007-06-26
申请人： Dae Youb Kim , Mi Suk Huh , Tae-Chul Jung , Hwan Joon Kim
发明人： Dae Youb Kim , Mi Suk Huh , Tae-Chul Jung , Hwan Joon Kim
CPC分类号： H04L9/0836 , H04L9/0891
摘要： A group key update method and a group key update apparatus for updating a key of members in a group are provided. The group key update method includes selecting a sub-root node among nodes on the binary tree; performing a node change with respect to the group according to a type of the sub-root node, and generating a changed binary tree; and performing a node key update with respect to the changed binary tree.
摘要翻译： 提供了用于更新组中的成员的密钥的组密钥更新方法和组密钥更新装置。 组密钥更新方法包括在二叉树上的节点中选择子根节点; 根据子根节点的类型执行关于组的节点改变，并且生成改变的二叉树; 并且针对改变的二叉树执行节点密钥更新。
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公开(公告)号：US20080013739A1
公开(公告)日：2008-01-17
申请号：US11819230
申请日：2007-06-26
申请人： Dae Youb Kim , Mi Suk Huh , Tae-Chul Jung , Hwan Joon Kim
发明人： Dae Youb Kim , Mi Suk Huh , Tae-Chul Jung , Hwan Joon Kim
CPC分类号： H04L9/0891 , H04L9/0836
摘要： A method and device for updating a group key are disclosed. The group key updating method comprises determining a start node for a key update on a binary tree, updating a node key of the start node for a key update, updating a node key of a parent node of a node corresponding to the updated node key using the updated node key, and repeatedly performing the updating of the node key of the parent node, and then updating a node key corresponding to a root node of the binary tree. With the disclosed method and device, it is possible to efficiently perform a group key update process.
摘要翻译： 公开了一种用于更新组密钥的方法和设备。 组密钥更新方法包括：确定用于二进制树上的密钥更新的起始节点，更新用于密钥更新的起始节点的节点密钥，使用更新的节点密钥更新与节点密钥相对应的节点的父节点的节点密钥 更新的节点密钥，并且重复执行父节点的节点密钥的更新，然后更新与二叉树的根节点相对应的节点密钥。 利用所公开的方法和装置，可以有效地执行组密钥更新处理。
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