中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

232 records (took 0.022 seconds)

    Systems and method for policy based printing and forgery detection
    81.
    发明公开
    Systems and method for policy based printing and forgery detection 有权
    系统与Verfahren zum regelbasierenden Ausdrucken undFälschungsberurteilung

    公开(公告)号：EP1209897A2

    公开(公告)日：2002-05-29

    申请号：EP01309647.4

    申请日：2001-11-15

    Applicant: Xerox Corporation

    Inventor： Lunt, Teresa F. ,  Hecht, David L. ,  Franklin, Matthew K. ,  Berson, Thomas A. ,  Stefik, Mark J. ,  Bell, Alan G. ,  R. Drews, Dean ,  Breuel, Thomas M. ,  Cass, Todd ,  Greene, Daniel H. ,  Curry, Douglas N. ,  Krivacic, Robert T.

    IPC: H04N1/32

    CPC classification number: H04N1/32523 ,  G06T1/0021 ,  G06T2201/0064 ,  H04N1/32101 ,  H04N1/32144 ,  H04N2201/0082 ,  H04N2201/324 ,  H04N2201/3246 ,  H04N2201/327

    Abstract: A print management system includes a policy (113) that determines a protection level for a document to be printed. The document is printed using forgery detection and deterrence technologies, such as fragile and robust watermarks, glyphs, and digital signatures, that are appropriate to the level of protection determined by the policy. A plurality of printers (130) are managed by a print management system (112). Each printer (130) can provide a range of protection technologies. The policy determines the protection technologies for the document to be printed. The print management system (112) routes the print job to a printer (130) that can apply the appropriate protections and sets the appropriate parameters in the printer. Copy evidence that can establish that a document is a forgery and/or tracing information that identifies the custodian of the document and restrictions on copying of the document and use of the information in the document are included in the watermark that is printed on the document. A document can be verified as an original or established as a forgery by inspecting the copy evidence and/or tracing information in the watermark.

    Abstract translation: 打印管理系统包括确定要打印的文档的保护等级的策略（113）。 该文件使用伪造检测和威慑技术打印，例如脆弱和鲁棒的水印，字形和数字签名，这些技术适用于由策略确定的保护级别。 多个打印机（130）由打印管理系统（112）管理。 每个打印机（130）可以提供一系列保护技术。 该策略确定要打印的文档的保护技术。 打印管理系统（112）将打印作业路由到可以应用适当保护的打印机（130），并将适当的参数设置在打印机中。 复印证明文件是伪造和/或跟踪信息，标识文件的保管人，复制文件的限制和文档中的信息的使用被包含在打印在文档上的水印中。 文档可以通过检查水印中的复制证据和/或跟踪信息来验证为原件或伪造成伪造。

    Embedding two sets of information in a digital image
    82.
    发明公开
    Embedding two sets of information in a digital image 审中-公开
    Einbettung von zweiDatensätzen在einem digitalen Bild

    公开(公告)号：EP1137252A2

    公开(公告)日：2001-09-26

    申请号：EP01200377.8

    申请日：2001-02-05

    Applicant: EASTMAN KODAK COMPANY

    Inventor： Wen, Xin, c/o Eastman Kodak Company

    IPC: H04N1/32

    CPC classification number: H04N1/32208 ,  G06T1/0021 ,  H04N1/32144 ,  H04N1/32293 ,  H04N2201/3239 ,  H04N2201/324

    Abstract: A method for embedding information in a digital image by an imaging device that is electronically connected to a network server includes storing a digital image having first embedded information in an electronic memory at a network server and sending the digital image having the first embedded information from the network server to the imaging device. The method further includes producing second information and using the imaging device to embed the second information in the digital image having the first embedded information to produce a digital image having the first and second embedded information.

    Abstract translation: 通过电子连接到网络服务器的成像装置将信息嵌入到数字图像中的方法包括：将具有第一嵌入信息的数字图像存储在电子存储器中，并在网络服务器处存储，并将具有第一嵌入信息的数字图像从 网络服务器到成像设备。 该方法还包括产生第二信息并使用成像装置将第二信息嵌入具有第一嵌入信息的数字图像中，以产生具有第一和第二嵌入信息的数字图像。

    Electronic watermark data insertion apparatus and electronic watermark data detection apparatus
    83.
    发明公开
    Electronic watermark data insertion apparatus and electronic watermark data detection apparatus 审中-公开
    电子邮件Wasserzeichendateneinfügungsgerätund elektronischesWasserzeichendatenauffindungsgerät

    公开(公告)号：EP1136946A2

    公开(公告)日：2001-09-26

    申请号：EP01107208.9

    申请日：2001-03-22

    Applicant: NEC CORPORATION

    Inventor： Tanaka, Nobuyuki

    IPC: G06T1/00

    CPC classification number: H04N19/467 ,  G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0053 ,  G06T2201/0061 ,  G06T2201/0065 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/32277 ,  H04N21/23892 ,  H04N21/8358 ,  H04N2201/324 ,  H04N2201/327 ,  H04N2201/3283

    Abstract: An electronic watermark data insertion apparatus comprises an insertion information memory (39) for preliminarily storing insertion information for designating electronic watermark data to be inserted block by block and an electronic watermark data insertion unit (33) for inserting, on the basis of the insertion information, the designated electronic watermark data from an electronic watermark data table (37) in a quantized image block by block. An electronic watermark data detection apparatus comprises an electronic watermark date extracting unit (45) for extracting the image data having a biased frequency region projecting in dependency on the inserted electronic watermark data block by block and an electronic watermark data detection unit (50) for calculating a statistical similarity between the extracted data and the electronic watermark data stored in an electronic watermark data table (48). An electronic watermark data accumulator (51) accumulates the statistical similarity for a predetermined time interval to produce an accumulated addition result which is reset after the elapse of the predetermined time interval or when the accumulated addition result exceeds the a predetermined threshold value. A determining unit (52) determines that the electronic watermark data is detected when the accumulated addition result exceeds the predetermined threshold value.

    Abstract translation: 一种电子水印数据插入装置，包括：插入信息存储器，用于预先存储用于指定要逐个插入的电子水印数据的插入信息;以及电子水印数据插入单元，用于根据插入信息 来自电子水印数据表（37）的指定的电子水印数据。 一种电子水印数据检测装置，包括电子水印日期提取单元（45），用于提取根据插入的电子水印数据块逐块投影的偏置频率区域的图像数据和电子水印数据检测单元（50），用于计算 所提取的数据与存储在电子水印数据表（48）中的电子水印数据之间的统计相似度。 电子水印数据累加器（51）在预定的时间间隔内累积统计相似度，以产生经过预定时间间隔之后复位的累积加法结果，或者当累加的相加结果超过预定阈值时。 确定单元（52）确定当累积的相加结果超过预定阈值时检测到电子水印数据。

    Code generating method and unit thereof, code detecting method and unit thereof, and watermark embedding unit and watermark detecting unit
    85.
    发明公开
    Code generating method and unit thereof, code detecting method and unit thereof, and watermark embedding unit and watermark detecting unit 审中-公开
    一种用于代码生成和对应单元，用于识别代码和相应的单元的方法，水印嵌入单元和水印检测部的方法

    公开(公告)号：EP1619872A2

    公开(公告)日：2006-01-25

    申请号：EP05022948.3

    申请日：2000-09-14

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Hirofumi, Muratani, K.K. Toshiba

    IPC: H04N1/32

    CPC classification number: G06T1/005 ,  G06T2201/0063 ,  G10L19/018 ,  H04H20/31 ,  H04H2201/50 ,  H04N1/32144 ,  H04N2201/3226 ,  H04N2201/3236 ,  H04N2201/324 ,  H04N2201/327

    Abstract: A method for detecting an embedded code which is embedded in a predetermined content and concatenates a plurality of component codes, comprising the steps of:

    dividing the embedded code into the plurality of component codes;
    decoding each of the component codes divided, thereby to obtain a plurality of residues pairs each comprising two residues, taking a plurality of integers which are predetermined and are relatively prime to each other, as moduli, the plurality of integers being inputted from a modulus storage section which stores k' different relatively prime numbers p i (i=1,2,...,k'), and
    calculating a user identification number of a colluder who made a collusion attack on the content, from the plurality of residue pairs, wherein
    the plurality of component codes are component codes that have a possibility to have a method of decoding at least one of the residues with respect to the user identification number of the colluder.

    Abstract translation: 其嵌入在预定的内容并连接的分量码复数，包括以下步骤为的嵌入代码检测方法全部：将所述嵌入的码成分量码的多元性; 解码每个划分中的分量码的，从而得到的残基对多个均包括两个残基，采取哪些是预定的并且互为素数彼此，如模量整数复数，整数的多个数据块从一个模数存储输入 这部分存储K“不同相对素数PI（I = 1,2，...，K”），并计算共谋者谁取得对内容的共谋攻击，从残基对所述多个用户标识号， worin的分量码多元性是分量码thathave的可能性有残基中的至少一个解码的方法相对于共谋者的使用者标识号。

    Image forming apparatus and authentication and charging method
    86.
    发明公开
    Image forming apparatus and authentication and charging method 审中-公开
    用于认证和计费图像形成装置和方法

    公开(公告)号：EP1605682A1

    公开(公告)日：2005-12-14

    申请号：EP05011406.5

    申请日：2005-05-25

    Applicant: Ricoh Co., Ltd.

    Inventor： Sugishita, Satoru ,  Ukegawa, Junji

    IPC: H04N1/32 ,  H04N1/00

    CPC classification number: H04N1/4413 ,  H04N1/0035 ,  H04N1/34 ,  H04N1/4426 ,  H04N1/4433 ,  H04N2201/324 ,  H04N2201/3246

    Abstract: An image forming apparatus having a hardware resource used in image forming processing and an application executing the image forming processing, and performing authentication relating to the execution of the image forming processing is disclosed. The image forming apparatus includes a character string display part and a type character string display part. The character string display part displays a character string that does not include the type of the image forming processing, and prompts the authentication. The type character string display part displays the type of the image forming processing.

    SECURE DISTRIBUTION OF DIGITAL REPRESENTATIONS
    87.
    发明授权
    SECURE DISTRIBUTION OF DIGITAL REPRESENTATIONS 有权
    数字显示安全分发

    公开(公告)号：EP1055321B1

    公开(公告)日：2005-08-03

    申请号：EP99905133.7

    申请日：1999-02-09

    Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    Inventor： ZHAO, Jian ,  KOCH, Eckhard ,  SAITO, Makato

    IPC: H04N1/32

    CPC classification number: H04N1/32144 ,  G06T1/0021 ,  H04L63/0428 ,  H04L2463/101 ,  H04L2463/103 ,  H04N1/32272 ,  H04N2201/3205 ,  H04N2201/323 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/324 ,  H04N2201/327 ,  H04N2201/3274 ,  H04N2201/3278 ,  H04N2201/3281

    Abstract: Techniques for secure distribution of digital representations that combine encryption and watermarking. When a user at a client desires to download a digital representation, the user makes a request to a server for the digital representation, which encrypts the digital representation using a first key and downloads the encrypted digital representation to the user. Before the user performs any operation on the decrypted digital representation, a secret fingerprint watermark identifying the user is added to the digital representation. The fingerprint watermark is added either at the server or at the client and a copy of the fingerprinted digital representation is kept at the server. If the user makes an impermissible use of the digital representation, the secret fingerprint watermark can be used to identify the user. The request made by the user indicates the type of use that the user whished to make of the digital representation. If the use involves storage of the digital representation at the client, the server provides a second key that the client employs to encrypt the digital representation. If the user has permission to do so, the user may modify the digital representation and return the modified digital representation to the server for further distribution. In this case, the second key is used to encrypt the digital representation when it is sent to the server. The second key also serves as the user identification in the fingerprint watermark. If the user loses the second key, it can be recovered from the copy of the fingerprinted digital representation kept at the server. The first and second keys and any decrypted copy of the digital representation are kept in secure storage in the client.

Patent Agency Ranking