公开(公告)号：US20120063595A1

公开(公告)日：2012-03-15

申请号：US12735391

申请日：2009-01-16

申请人： Ayoub Massoudi ,  Frederic Lefebvre ,  Alain Durand

发明人： Ayoub Massoudi ,  Frederic Lefebvre ,  Alain Durand

IPC分类号： H04N7/167

CPC分类号： H04N7/1675 ,  H04L9/0844 ,  H04L9/3247 ,  H04L63/08 ,  H04L63/10 ,  H04N19/13 ,  H04N19/147 ,  H04N19/154 ,  H04N19/467 ,  H04N19/63 ,  H04N19/70 ,  H04N21/23476

摘要： A layered audiovisual packet data stream, such as one obtained by a JPEG2000 encoder, is received together with information (metadata) about the contribution of each packet to the reduction of image distortion. The distortion-to-rate ratio for each packet is calculated and the packets are ordered in descending ratio. The non-encrypted packet having the highest ratio is encrypted until the target distortion is obtained. Also provided is an apparatus. In a variant, the data in the packets are substituted by dummy data instead of encrypted.

摘要翻译： 诸如由JPEG2000编码器获得的分层视听分组数据流与关于每个分组对于减少图像失真的贡献的信息（元数据）一起被接收。 计算每个数据包的失真率比，并按照降序排序数据包。 具有最高比率的非加密分组被加密直到获得目标失真。 还提供了一种装置。 在一个变体中，分组中的数据被虚拟数据替代而不是加密。

公开(公告)号：US20090013189A1

公开(公告)日：2009-01-08

申请号：US12215620

申请日：2008-06-27

申请人： Michel Morvan ,  Alain Durand ,  Frederic Lefebvre

发明人： Michel Morvan ,  Alain Durand ,  Frederic Lefebvre

IPC分类号： H04L9/00

CPC分类号： G11B20/00086 ,  G06K9/00711 ,  G11B20/00166 ,  G11B20/0055 ,  H04N5/913 ,  H04N21/2541 ,  H04N21/4627 ,  H04N21/47205 ,  H04N21/835 ,  H04N21/8355 ,  H04N2005/91328

摘要： A system for protection against unauthorized modifications of digital content, in particular image content, in which a content processing system retrieves content, a fingerprint for the content and at least one modification limit expressing authorized modifications to the content. The content may then be modified, but before saving or exportation is allowed, a second fingerprint is calculated, and the difference between the fingerprints is compared with the at least one modification limit. If the difference is within the allowed bounds, then saving or exportation is allowed; if not, it is prevented. Also provided are a method and a content consumer device performing essentially the same steps before allowing rendering of the content.

摘要翻译： 一种防止未经授权修改数字内容的系统，特别是其中内容处理系统检索内容的图像内容，内容的指纹以及表示对内容的授权修改的至少一个修改限制。 然后可以修改内容，但在允许保存或导出之前，计算第二指纹，并且将指纹之间的差异与至少一个修改限制进行比较。 如果差异在允许范围内，则允许保存或导出; 如果没有，就防止了。 还提供了在允许呈现内容之前执行基本上相同的步骤的方法和内容消费者设备。

公开(公告)号：US08213613B2

公开(公告)日：2012-07-03

申请号：US11198584

申请日：2005-08-05

申请人： Eric Diehl ,  Jean-Pierre Andreaux ,  Louis-Xavier Carbonnel ,  Alain Durand

发明人： Eric Diehl ,  Jean-Pierre Andreaux ,  Louis-Xavier Carbonnel ,  Alain Durand

IPC分类号： H04N7/167

CPC分类号： H04N21/43615 ,  H04N7/163 ,  H04N21/44227 ,  H04N21/4623

摘要： The invention relates to pairing a slave device with a master device, for example decoders in a conditional access system. There is provided a security module that stores a device state that indicates whether a decoder shall be a master or a slave decoder. There is also provided a method in a conditional access system of providing a device with a device state stored on a security module. It is detected that the security module is in connection with the device and the device state is transferred from the security module to the device. There is further provided a method of pairing a slave device with a master device. The slave device asks the master device to identify itself, the master device returns an identification, and if the slave device has not yet been paired with a master device, it checks the identity of the master device and, if the identity is verified pairs with the master device. There is also provided a first, slave, device for pairing with a second, master, device. The first device comprises an interface for sending an identification command to and receiving an identification message from the master device, and a processor for checking the identity of the second device and pairing the first device with the second device.

摘要翻译： 本发明涉及从属设备与主设备的配对，例如条件接入系统中的解码器。 提供了一种安全模块，其存储指示解码器是主器件还是从器件解码器的器件状态。 还提供了一种在条件访问系统中为设备提供存储在安全模块上的设备状态的方法。 检测到安全模块与设备连接，并且设备状态从安全模块传送到设备。 还提供了一种将从设备与主设备配对的方法。 从设备要求主设备自己识别，主设备返回一个标识，如果从设备尚未与主设备配对，则它检查主设备的身份，并且如果身份被验证与 主设备。 还提供了用于与第二主设备配对的第一从设备。 第一设备包括用于向主设备发送识别命令并从主设备接收标识消息的接口，以及用于检查第二设备的身份并将第一设备与第二设备配对的处理器。

公开(公告)号：US07627762B2

公开(公告)日：2009-12-01

申请号：US10514796

申请日：2002-11-08

申请人： Ralf Schaefer ,  Alain Durand ,  Laurent Lesenne ,  Frédéric Pasquier

发明人： Ralf Schaefer ,  Alain Durand ,  Laurent Lesenne ,  Frédéric Pasquier

IPC分类号： H04L9/00 ,  G06F21/24

CPC分类号： H04N7/1675 ,  H04L63/08 ,  H04L63/0823 ,  H04N7/165 ,  H04N21/2351 ,  H04N21/2362 ,  H04N21/2541 ,  H04N21/835

摘要： The present invention concerns a device and a process for signing digital streams, each of them comprising contents, related to audiovisual information, and a signaling. The device applies encrypting to selectively determined descriptors of the signaling, called authenticated descriptors, to obtain signature. The invention also concerns corresponding authentication device and process. Application to authentication of DVB/MPEG digital streams, notably for MHP.

摘要翻译： 本发明涉及用于签署数字流的设备和过程，每个流都包括与视听信息相关的内容和信令。 该设备对选择性确定的信令描述符（称为认证描述符）应用加密以获得签名。 本发明还涉及相应的认证设备和过程。 应用于DVB / MPEG数字流的认证，特别适用于MHP。

公开(公告)号：US20080040771A1

公开(公告)日：2008-02-14

申请号：US11667216

申请日：2005-11-09

申请人： Yan-Mei Tang Talpin ,  Alain Durand ,  Olivier Heen

发明人： Yan-Mei Tang Talpin ,  Alain Durand ,  Olivier Heen

IPC分类号： H04N7/16

CPC分类号： H04N7/163 ,  H04N21/4367 ,  H04N21/6175 ,  H04N21/8355

摘要： A device for presentation of a signal having an audio-visual content, comprising means for presenting said content, means for connecting to a transmission channel which is external with respect to said device for receiving a signal, and a module for transmission of a signal which is disposed in the same container together with the presentation means, comprising means for storing a first identification information, adapted to receive the signal from the connection means and to transmit said signal to the presentation means only when the first identification information corresponds to a second identification information contained in the signal. A system and method for presenting a signal comprising an audio-visual content are also disclosed.

摘要翻译： 一种用于呈现具有视听内容的信号的装置，包括用于呈现所述内容的装置，用于连接到相对于所述用于接收信号的装置外部的传输信道的装置，以及用于传输信号的模块 与显示装置一起设置在相同的容器中，包括用于存储适于从连接装置接收信号并且仅当第一识别信息对应于第二识别信号时将所述信号发送到呈现装置的第一识别信息的装置 信息中包含的信息。 还公开了一种用于呈现包括视听内容的信号的系统和方法。

公开(公告)号：US20070112580A1

公开(公告)日：2007-05-17

申请号：US11482309

申请日：2006-07-07

申请人： Yan-Mei Tang-Talpin ,  Alain Durand ,  Fabien Battini ,  Jean-Louis Diascorn ,  Eric Diehl

发明人： Yan-Mei Tang-Talpin ,  Alain Durand ,  Fabien Battini ,  Jean-Louis Diascorn ,  Eric Diehl

IPC分类号： G06Q99/00

CPC分类号： H04N21/26606 ,  G06F21/10 ,  H04L63/10 ,  H04L2463/101 ,  H04N21/4333 ,  H04N21/440281 ,  H04N21/44213 ,  H04N21/4627 ,  H04N21/8355

摘要： The invention relates to a process for controlling digital rights of the “Play N times” type for a digital audio and/or video content (132), referred to as controlled content (132), the controlled content being consumed by a consumer on a consuming device (112) or on another device delegating the controlling of these rights to the consuming device. According to the invention, such a process is characterized in that charging of one additional usage is inhibited in at least one of the following cases where: the consumer momentarily consumes another content, on the same device (112) where the controlled content (132) is consumed, and then returns to the controlled content (132), the consumer effects a pause in the usage of the controlled content (132), the consumer performs a fast-forward of the controlled content (132), the consumer performs a rewind of the controlled content (132).

摘要翻译： 本发明涉及一种用于控制称为受控内容（132）的数字音频和/或视频内容（132）的“播放N次”类型的数字权利的过程，受控内容被消费者在 消费设备（112）或在将这些权限的控制委托给消费设备的另一设备上。 根据本发明，这种处理的特征在于，在以下情况中的至少一个情况下，禁止对一个附加使用进行充电：其中：消费者在同一设备（112）上暂时消耗另一内容，其中受控内容（132） 消费，然后返回到受控内容（132），消费者在受控内容（132）的使用中产生暂停，消费者执行受控内容（132）的快进，消费者执行倒带 的控制内容（132）。

公开(公告)号：US20050257059A1

公开(公告)日：2005-11-17

申请号：US10514796

申请日：2002-11-08

申请人： Ralf Schaefer ,  Alain Durand ,  Laurent Lesenne ,  Frederic Pasquier

发明人： Ralf Schaefer ,  Alain Durand ,  Laurent Lesenne ,  Frederic Pasquier

IPC分类号： H04L9/00 ,  H04L29/06 ,  H04N7/16 ,  H04N7/167

CPC分类号： H04N7/1675 ,  H04L63/08 ,  H04L63/0823 ,  H04N7/165 ,  H04N21/2351 ,  H04N21/2362 ,  H04N21/2541 ,  H04N21/835

摘要： The present invention concerns a device and a process for signing digital streams, each of them comprising contents, related to audiovisual information, and a signaling. The device applies encrypting to selectively determined descriptors of the signaling, called authenticated descriptors, to obtain signature. The invention also concerns corresponding authentication device and process. Application to authentication of DVB/MPEG digital streams, notably for MHP.

摘要翻译： 本发明涉及用于签署数字流的设备和过程，每个流都包括与视听信息相关的内容和信令。 该设备对选择性确定的信令描述符（称为认证描述符）应用加密以获得签名。 本发明还涉及相应的认证设备和过程。 应用于DVB / MPEG数字流的认证，特别适用于MHP。

公开(公告)号：US20050257046A1

公开(公告)日：2005-11-17

申请号：US11119391

申请日：2005-04-29

申请人： Alain Durand

发明人： Alain Durand

IPC分类号： G06K17/00 ,  H04L9/32 ,  H04L9/00

CPC分类号： H04L9/3268 ,  H04L9/3242 ,  H04L2209/60

摘要： In a method for managing a Certificate Revocation List (CRL), a first device (31, 61) receives the CRL (33, 67) which comprises at least one revoked certificate identifier (SNi). An integrity field (MACi) associated to an entry of the CRL (371, . . . , 37p) is calculated using a secret data (KCRL), wherein an entry comprises at least one revoked certificate identifier of the CRL. The entry and its associated calculated integrity field are transmitted to a second device (32, 62), distinct from the first device and are stored into the second device. The method further comprises checking a validity of a certificate.

摘要翻译： 在用于管理证书吊销列表（CRL）的方法中，第一设备（31,61）接收包括至少一个撤销的证书标识符（SN）的CRL（33,67）。 使用以下方法计算与CRL的条目相关联的完整性字段（MAC＆lt; i＆lt; i＆lt; i＆lt; i＆lt; i＆lt; i＆gt;） 秘密数据（K CRL ），其中条目包括CRL的至少一个撤销的证书标识符。 入口及其相关联的计算完整性字段被传送到与第一设备不同的第二设备（32,62），并且被存储到第二设备中。 该方法还包括检查证书的有效性。

公开(公告)号：US09258595B2

公开(公告)日：2016-02-09

申请号：US10504897

申请日：2003-02-21

申请人： Alain Durand ,  Christophe Laurent ,  Sylvain Lelievre

发明人： Alain Durand ,  Christophe Laurent ,  Sylvain Lelievre

IPC分类号： H04N21/41 ,  H04N21/4367 ,  H04N7/167 ,  H04N21/4147 ,  H04N7/16

CPC分类号： H04N21/4147 ,  H04N7/163 ,  H04N7/1675 ,  H04N21/4122 ,  H04N21/4367

摘要： The processing device is intended to be connected to a network of the second domain so as to receive data encrypted according to an encryption method specific to the first domain. It comprises: a memory for containing a first secret specific to the first domain; means of decryption of the data encrypted with the aid of the first secret so as to obtain decrypted data; means of encryption of the data decrypted according to an encryption method specific to the second domain, so that the data encrypted by said means of encryption cannot be decrypted other than with the aid of a second secret specific to the second domain. The invention also relates to the method for transmitting data encrypted with the aid of the secret specific to the first domain in the network of the second domain.

摘要翻译： 处理装置旨在连接到第二域的网络，以便接收根据第一域专用的加密方法加密的数据。 它包括：用于存储特定于第一域的第一秘密的存储器; 借助于第一秘密加密的数据的解密手段，以便获得解密的数据; 对根据第二域专用的加密方法解密的数据进行加密的装置，使得通过所述加密方式加密的数据不能被解密，而不是借助于特定于第二域的第二秘密。 本发明还涉及用于在第二域的网络中借助于特定于第一域的秘密来发送加密的数据的方法。

公开(公告)号：US09237310B2

公开(公告)日：2016-01-12

申请号：US12590912

申请日：2009-11-16

申请人： Stéphane Onno ,  Eric Diehl ,  Alain Durand

发明人： Stéphane Onno ,  Eric Diehl ,  Alain Durand

IPC分类号： G06F7/00 ,  H04N7/16 ,  H04N21/4627 ,  H04N21/6334

CPC分类号： H04N7/165 ,  H04N21/4627 ,  H04N21/63345

摘要： A method of processing digital content according to a workflow. The digital content is received and information for the workflow is checked to decide if a processing device is authorized to process the content, the workflow imposing that the digital content be processed in a process chain comprising at least two nodes, wherein the processing device is authorized to process the content if it corresponds to the node that according to the process chain is the next node to process the digital content. If the processing device is authorized to process the content, the digital content is processed and the information for the workflow is updated. Also provided is a system.

摘要翻译： 根据工作流处理数字内容的方法。 接收数字内容并检查工作流的信息以确定处理设备是否被授权处理内容，该工作流强加在包括至少两个节点的处理链中处理数字内容，其中处理设备被授权 如果它对应于根据进程链的节点是处理数字内容的下一个节点，则处理内容。 如果处理设备被授权处理内容，则处理数字内容并且更新用于工作流的信息。 还提供了一个系统。