公开(公告)号：EP1393313A1

公开(公告)日：2004-03-03

申请号：EP02724533.1

申请日：2002-04-19

申请人： Koninklijke Philips Electronics N.V.

发明人： KALKER, Antonius, A., C., M. ,  HAITSMA, Jaap, A. ,  VAN DER VEEN, Minne ,  BRUEKERS, Alphons, A., M., L.

IPC分类号： G11B20/00 ,  H04N1/32

CPC分类号： H04H20/31 ,  G06T1/0028 ,  G06T2201/0202 ,  G11B20/00086 ,  G11B20/00884 ,  G11B20/00891 ,  H04N1/32154 ,  H04N1/3216 ,  H04N2201/3236

摘要： Disclosed is a non-frame-based method and an arrangement for embedding a watermark in an information signal (x(n)), e.g. an audio signal. The method comprises calculating (101) a non-cyclic convolution of the information signal with a watermark signal (v(n)) and combining (102) the convolution with the information signal. The non-cyclic convolution may be calculated by overlapped Fast Fourier transform filtering.

摘要翻译： 公开了一种基于非基于帧的方法和用于在信息信号（x（n））中嵌入水印的装置，例如， 一个音频信号。 该方法包括计算（101）信息信号与水印信号（v（n））的非循环卷积以及将卷积与信息信号组合（102）。 非循环卷积可以通过重叠快速傅里叶变换滤波来计算。

公开(公告)号：EP0862318A3

公开(公告)日：2003-09-17

申请号：EP98301025.7

申请日：1998-02-12

申请人： ContentGuard Holdings, Inc.

发明人： Stefik, Mark J. ,  Petrie, Glen W. ,  Okamoto, Steve A. ,  Briggs, Nicholas H.

IPC分类号： H04N1/32 ,  H04N7/24

CPC分类号： G06F21/10 ,  G06F17/30017 ,  G06Q20/14 ,  G06T1/0021 ,  G06T2201/0064 ,  G07F17/0014 ,  G07F17/16 ,  H04N1/32144 ,  H04N21/8358 ,  H04N2201/3236 ,  H04N2201/3269

摘要： Described herein is a trusted rendering system for use in a system for controlling the distribution and use of digital works. The trusted rendering system facilitates the protection of rendered digital works which have been rendered on a system which controls the distribution and use of digital works through the use of dynamically generated watermark information that is embedded in the rendered output. The watermark data typically provides information relating to the owner of the digital work, the rights associated with the rendered copy of the digital work and when and where the digital work was rendered. This information will typically aid in deterring or preventing unauthorized copying of the rendered work to be made. The system for controlling distribution and use of digital works provides for attaching persistent usage rights to a digital work. Digital works are transferred between repositories which are used to request and grant access to digital works. Such repositories are also coupled to credit servers which provide for payment of any fees incurred as a result of accessing a digital work.

公开(公告)号：EP1326424A2

公开(公告)日：2003-07-09

申请号：EP02258586.3

申请日：2002-12-12

申请人： CANON KABUSHIKI KAISHA

发明人： Wakao, Satoru, Canon Kabushiki Kaisha ,  Ikeda, Yasuyuki, Canon Kabushiki Kaisha

IPC分类号： H04N1/32 ,  H04N1/21

CPC分类号： H04N1/32128 ,  H04N2101/00 ,  H04N2201/3235 ,  H04N2201/3236

摘要： An image generation apparatus, in generating verification data (digital signature or MAC) necessary for detecting an alteration in image data, generates secret information Ks necessary for the generation of the verification data, utilizing secret information A and secret information B. In this manner, the image generation apparatus makes difficult the leakage and the analysis of the secret information Ks, necessary for generation of the verification data for the image data, whereby the safety and the confidentiality of the secret information Ks can be improved.

摘要翻译： 在生成用于检测图像数据的变更所需的验证数据（数字签名或MAC）的图像生成装置中，利用秘密信息A和秘密信息B生成生成验证数据所需的秘密信息Ks。以这种方式， 图像生成装置难以产生用于图像数据的验证数据所必需的秘密信息Ks的泄漏和分析，从而可以提高秘密信息Ks的安全性和机密性。

公开(公告)号：EP1324264A2

公开(公告)日：2003-07-02

申请号：EP02258558.2

申请日：2002-12-11

申请人： SONY UNITED KINGDOM LIMITED

发明人： Pelly, Jason Charles ,  Tapson, Daniel Warren

IPC分类号： G06T1/00

CPC分类号： H04N1/32154 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0063 ,  H04N1/32165 ,  H04N2201/3236 ,  H04N2201/324 ,  H04N2201/327

摘要： A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words into a copy of the original material item. The encoding data processor is arranged to form other code words of the set by cyclically shifting a first code word. The system includes a detecting data processor operable to identify the code word in the marked material item. The detecting data processor is operable to recover the code word from the marked material item and to form a Fourier transform of the recovered code word and a Fourier transform of the first code word of the set. The data detecting processor forms correlation samples by forming an inverse transform of a combination of the recovered and the first code word. Each of the correlation value samples provides the correlation value for one of the set of code words. A computationally efficient way of calculating the correlation for each code word in the set is thereby provided. As a result a time taken to detect a code word present in a marked material item is improved. The watermarking system finds particular application in identifying a point of distribution of pirate copies of video material generated by capturing the watermarked image, using, for example, a camcorder in a cinema.

摘要翻译： 一种水印系统包括编码数据处理器，其可操作以通过将预定的一组代码字中的一个引入原始物料的副本来生成原始物料的至少一个标记版本。 编码数据处理器被布置成通过循环移位第一码字来形成集合的其他码字。 该系统包括可操作以识别标记物料中的代码字的检测数据处理器。 检测数据处理器可操作以从标记的物料项目中恢复代码字，并形成恢复的代码字的傅立叶变换和该组的第一代码字的傅里叶变换。 数据检测处理器通过形成恢复和第一码字的组合的逆变换来形成相关样本。 每个相关值样本提供该组码字之一的相关值。 从而提供了计算有效的方法来计算集合中每个码字的相关性。 结果，提高了检测标记物料中存在的代码字的时间。 水印系统在识别通过使用例如电影院中的摄像机捕获水印图像而生成的视频资料的盗版副本的特定应用。

公开(公告)号：EP1303980A2

公开(公告)日：2003-04-23

申请号：EP01954962.5

申请日：2001-07-25

申请人： Goldhar/Jaffe Technology Development

发明人： JAFFE, Jonathan, E. ,  GOLDHAR, Joel, D. ,  WAROT, Michael, A.

IPC分类号： H04N1/00

CPC分类号： H04N1/32128 ,  H04N2101/00 ,  H04N2201/0084 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3252 ,  H04N2201/3253 ,  H04N2201/3274 ,  H04N2201/3277

摘要： A method and system of authentication for sensor-recorders and other information capture devices is disclosed. In accordance with aspects of the current invention, a digital sample of the environment is obtained. From this sample and at least one parameter representative of at least one condition under which the sample was generated, a digital signature is created. This signature is stored in memory with the sample to be checked at a later time for authenticity. The file is checked for authenticity by generating a second signature from the file and comparing that signature to the original signature. If the two signatures are identical, the sample is considered authentic and if the two signatures are different, the sample cannot be authenticated.

公开(公告)号：EP1298913A2

公开(公告)日：2003-04-02

申请号：EP02078855.0

申请日：2002-09-18

申请人： EASTMAN KODAK COMPANY

发明人： Fredlund, John Randall, c/o Eastman Kodak Company ,  Parker, Martin Alan, c/o Eastman Kodak Company

IPC分类号： H04N1/32

CPC分类号： H04L63/0823 ,  H04L63/123 ,  H04N1/32101 ,  H04N1/32122 ,  H04N2101/00 ,  H04N2201/3226 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3274 ,  H04N2201/3278

摘要： A system and method of authenticating a digital still image captured using a digital image capture device. To process the digital still image for later authentication, a signature data is transmitted from a remote location to the digital image capture device. Upon capturing the digital still image, an image identification is associated with the digital still image. The signature data is then applied to the captured digital still image to produce an authentication signature representative of the captured digital still image. The authentication signature is associated with the image identification and transmitted from the digital still image to the remote location for storage at the remote location. To verify the authenticity of the digital still image, the digital still image is transmitted to the remote location. The signature data for the transmitted digital still image is accessed and applied to the transmitted digital still image to produce a verification signature. The authentication signature and the verification signature are compared to determine the authentication of the transmitted digital still image. In an alternate embodiment, the signature data and image identification are sent to the image capture device to generate the verification signature, which is transmitted to the remote location for comparison with the authentication signature.

摘要翻译： 一种使用数字图像捕获装置识别数字静止图像的系统和方法。 为了处理数字静态图像用于稍后的认证，将签名数据从远程位置发送到数字图像捕获装置。 在捕获数字静止图像时，图像识别与数字静止图像相关联。 然后将签名数据应用于所捕获的数字静止图像，以产生代表所捕获的数字静止图像的认证签名。 认证签名与图像识别相关联，并从数字静止图像发送到远程位置以存储在远程位置。 为了验证数字静态图像的真实性，将数字静止图像传输到远程位置。 访问所发送的数字静止图像的签名数据并将其应用于所发送的数字静止图像以产生验证签名。 比较认证签名和验证签名，以确定所发送的数字静止图像的认证。 在替代实施例中，签名数据和图像标识被发送到图像捕获设备以生成验证签名，其被发送到远程位置以与认证签名进行比较。

公开(公告)号：EP1296478A2

公开(公告)日：2003-03-26

申请号：EP02354138.6

申请日：2002-09-10

申请人： STMicroelectronics S.A.

发明人： Wuidart, Luc ,  Balthazar, Pierre

IPC分类号： H04L9/30 ,  H04L9/32 ,  H04N7/24

CPC分类号： H04L9/3273 ,  G06T1/0021 ,  H04L2209/608 ,  H04N1/32144 ,  H04N2201/3236

摘要： L'invention concerne un procédé et un système sécurisé de transmission de données numériques (DATA) entre un émetteur et un récepteur, comprenant une phase d'authentification du récepteur par un algorithme symétrique à partage de clé d'authentification (K A , K B ) sans transmission de celle-ci, une phase de marquage (WM) des données en utilisant la clé d'authentification comme clé de marquage, et une phase de transmission des données marquées (WD).

摘要翻译： 本发明涉及一种用于在发射机和接收机之间传输数字数据（DATA）的方法和安全系统，包括通过对称密钥共享算法（KA，KB）对接收机进行认证的阶段，而无需 其传输，使用认证密钥作为标记密钥的数据的标记阶段（WM）以及标记数据（WD）的传输阶段。

公开(公告)号：EP1223742A1

公开(公告)日：2002-07-17

申请号：EP00955073.2

申请日：2000-08-28

申请人： Celartem Technology, Inc.

发明人： SHINDO, Jiro, c/o Celartem Technology Inc.

IPC分类号： H04N1/387 ,  G06F12/14 ,  G06F15/00 ,  G06T1/00

CPC分类号： H04N1/32144 ,  G06F21/10 ,  G06F2221/0737 ,  G06F2221/0744 ,  G06F2221/2101 ,  G06F2221/2151 ,  G06T1/0021 ,  G06T2201/0051 ,  H04N1/00209 ,  H04N1/2179 ,  H04N1/4413 ,  H04N1/4426 ,  H04N1/444 ,  H04N2201/3205 ,  H04N2201/3207 ,  H04N2201/3214 ,  H04N2201/3215 ,  H04N2201/3233 ,  H04N2201/3236

摘要： An image distribution system is configured with multiple clients 2 connectable via a network environment, such as Internet 1; image file server 3 having image file database 5 containing image files and log file 6; user database 7; and security control server 4 having image key database 8 and log file 9. Image data from the image file server can be opened once the client who made the image data request gains access to the security control server using an IP address obtained from the image file server, is granted authorization, and obtains an image key. The client encodes security data, such as the date and time of the distribution of the image data, user ID, serial number of hard disk drive, and client's IP address, in order to embed it in the image data unarchived into its memory in the form of an electronic watermark and transmits the security data to the security control server in order to store it in the log file at the same time.

摘要翻译： 图像分发系统配置有可通过诸如因特网1的网络环境连接的多个客户机2; 具有包含图像文件和日志文件6的图像文件数据库5的图像文件服务器3; 用户数据库7; 以及具有图像密钥数据库8和日志文件9的安全控制服务器4.一旦图像数据请求的客户端使用从图像文件获得的IP地址访问安全控制服务器，则可以打开来自图像文件服务器的图像数据 服务器，获得授权，并获得图像密钥。 客户端编码安全数据，例如图像数据分发的日期和时间，用户ID，硬盘驱动器的序列号和客户端的IP地址，以将其嵌入到未被归档到其内存中的图像数据中 电子水印的形式，并将安全数据发送到安全控制服务器，以便同时将其存储在日志文件中。

公开(公告)号：EP0895691B1

公开(公告)日：2002-07-10

申请号：EP96913827.0

申请日：1996-04-23

申请人： Charney, Leon H. ,  Bushinsky, Shay H. ,  Ur, Shmuel

发明人： UR, Shmuel

IPC分类号： H04N1/32

CPC分类号： H04N1/32133 ,  G06F21/10 ,  G06F2221/0737 ,  G06K15/02 ,  G06K2215/0082 ,  G06T1/0021 ,  G07D7/20 ,  H04N1/32101 ,  H04N1/32144 ,  H04N1/32203 ,  H04N1/32288 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/327 ,  H04N2201/3271

摘要： Each copy of software (9) is assigned a unique identifying code pattern (27) which is printed on all documents (19) produced with that software (9) by a high resolution printer (17). The unique identifying code pattern (27) is a plurality of spaced apart marks having a size no greater than about 300 dpi, and is therefore, at best, barely noticeable to the human observer. The 'invisible signature' is also reproduced on documents (19) made by unauthorized copies of software (9) which can therefore be traced. Preferably, the unique identifying code (27) is replicated multiple times (271-275) over the document (19) using an error correcting code to assure that at least one replication will be clear of matter selected for printing by the software. A high resolution scannner (21) extracts and identifies the code patterns (271-275) printed on the document (19). In systems where the software (9) generates (39) a print file for the high resolution printer (17), print commands for the pattern replications (271-275) are interspersed (41) with the other print commands making identification and removal of the commands very difficult and not worth the effort since the 'invisible signature' does not prevent copying of the software (9) or noticeably detract from the appearance of the finished document (19).

公开(公告)号：EP1189427A2

公开(公告)日：2002-03-20

申请号：EP01121368.3

申请日：2001-09-06

申请人： Hitachi, Ltd. ,  Hitachi Government and Public Corporation System Engineering Ltd.

发明人： Shouduka, Kenichi, Hitachi Government and Public ,  Toyoshima, Hisashi, Hitachi, Ltd., Intellectual ,  Kikuta, Atsushi, Hitachi, Ltd., Intellectual ,  Yonezawa, Yasushi, Hitachi Government and Public

IPC分类号： H04N1/32

CPC分类号： G06F21/645 ,  H04N1/32144 ,  H04N2201/3233 ,  H04N2201/3236 ,  H04N2201/327

摘要： A method of managing an electronic mark using an agent includes the steps of filing (210) an application of issuing the electronic mark together with user information to be buried in the electronic mark, entrusting (210) generation of the electronic mark together with the information of the user who applied for issuance of the electronic mark and the original image information for representing original image data where the user information is to be buried; generating (410) the electronic mark by burying the information of the user in the original image data represented by the original image information to be generated; and providing (312) the generated electronic mark to a mark user who filed an application of issuing the electronic mark.

摘要翻译： 使用代理管理电子商标的方法包括以下步骤：将发出电子商标的应用与要埋在电子商标中的用户信息一起提交（210），委托（210）电子商标的生成以及信息 申请发行电子商标的用户和用于表示用户信息要埋藏的原始图像数据的原始图像信息; 通过将用户的信息埋入由要生成的原始图像信息表示的原始图像数据中来产生（410）电子标记; 并向所述提交发出电子商标的申请的标记用户提供（312）生成的电子商标。