公开(公告)号：US07082537B2

公开(公告)日：2006-07-25

申请号：US10752665

申请日：2004-01-08

Applicant: Hirofumi Muratani

Inventor： Hirofumi Muratani

IPC: H04L9/00

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

Abstract: Residue calculating sections respectively obtain residues which take a plurality of integers as modulus, with respect to a user ID. The plurality of integers are stored in modulus storage sections and are prime to each other. Based on these residues and parameters stored in a coding parameter storage section, component codes constructed by continuous sequences of 1 and 0 using a predetermined number of bits as a unit are respectively generated by component code generating sections. These component codes are concatenated by a concatenating section, thereby to obtain a code to be embedded, which constructs watermark information.

公开(公告)号：US20060072786A1

公开(公告)日：2006-04-06

申请号：US11261442

申请日：2005-10-28

Applicant: Stephen Watson ,  Daniel Collens ,  Kevin Hui ,  Michael Malcolm

Inventor： Stephen Watson ,  Daniel Collens ,  Kevin Hui ,  Michael Malcolm

IPC: G06K9/00

CPC classification number: H04N1/32187 ,  G06T1/0035 ,  H04N1/32165 ,  H04N1/32277 ,  H04N19/467 ,  H04N21/2383 ,  H04N21/23892 ,  H04N21/4348 ,  H04N21/8358 ,  H04N2201/324

Abstract: A method of embedding information in digital content representing media streams. The method includes (1) selecting a set of locations within that digital content reprensenting the media stream to embed information, (2) selecting a set of possible alterations to make at those locations, and (3) making a subset of the possible alterations. The set of locations and possible alterations is herein sometimes called a “watermark.” The subset of actual alterations that are made is herein sometimes called a “fingerprint.” The method determines a set of locations at which there are alternative versions of digital content representing the same media stream, such as one being the original and one being an alternative version of the same digital content, herein sometimes called the “original movie” and the “alt-movie,” or herein sometimes called the “original block” and the “alt-block” for a particular block in the digital content representing the media stream.

Abstract translation: 一种在表示媒体流的数字内容中嵌入信息的方法。 该方法包括：（1）选择代替媒体流的数字内容中的一组位置以嵌入信息;（2）选择在这些位置进行的一组可能的改变，以及（3）制作可能的改变的子集。 这里的位置和可能的改变在这里有时被称为“水印”。 所做的实际改变的子集有时称为“指纹”。 该方法确定一组位置，其中存在代表相同媒体流的数字内容的替代版本，例如一个是原始的，一个是相同数字内容的替代版本，在此有时称为“原始电影”，并且 “alt-movie”，或有时称为“原始块”的“alt-block”和表示媒体流的数字内容中的特定块的“alt-block”。

公开(公告)号：US20050268104A1

公开(公告)日：2005-12-01

申请号：US11137759

申请日：2005-05-26

Applicant: Satoru Sugishita ,  Junji Ukegawa

Inventor： Satoru Sugishita ,  Junji Ukegawa

IPC: B41J5/30 ,  B41J5/44 ,  G03G21/00 ,  G06F3/00 ,  G06F3/048 ,  G06F3/12 ,  H04L9/00 ,  H04N1/00 ,  H04N1/32 ,  H04N1/34 ,  H04N1/44

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.

Abstract translation: 公开了一种图像形成装置，具有用于图像形成处理的硬件资源和执行图像形成处理的应用，并且执行与执行图像形成处理有关的认证。 图像形成装置包括字符串显示部分和类型字符串显示部分。 字符串显示部显示不包括图像形成处理的类型的字符串，并提示认证。 类型字符串显示部分显示图像形成处理的类型。

公开(公告)号：US20050240768A1

公开(公告)日：2005-10-27

申请号：US10516156

申请日：2003-05-21

Applicant: Aweke Lemma ,  Javier Aprea

Inventor： Aweke Lemma ,  Javier Aprea

IPC: G06T1/00 ,  G10L19/018 ,  G11B20/00 ,  H04N1/32 ,  H04N1/387 ,  H04N1/40 ,  H04N7/26 ,  H04L9/00

CPC classification number: G11B20/00086 ,  G06T1/005 ,  G10L19/018 ,  G11B20/00884 ,  G11B20/00891 ,  H04N1/32149 ,  H04N1/32315 ,  H04N2201/324 ,  H04N2201/327

Abstract: Methods and apparatus for processing a multimedia signal comprising a watermark signal are described. The method includes the steps of: removing at least a portion of the watermark signal, and adding a new watermark signal to the multimedia signal so as to form a new watermarked multimedia signal.

Abstract translation: 描述了用于处理包括水印信号的多媒体信号的方法和装置。 该方法包括以下步骤：去除水印信号的至少一部分，并向多媒体信号添加新的水印信号，以形成新的水印多媒体信号。

公开(公告)号：US20030099374A1

公开(公告)日：2003-05-29

申请号：US10169210

申请日：2002-10-17

Inventor： Jong Uk Choi ,  Gi Chul Choi

IPC: G06K009/00

CPC classification number: H04N1/32144 ,  G06F21/64 ,  H04N1/32101 ,  H04N1/32315 ,  H04N2201/3233 ,  H04N2201/324 ,  H04N2201/327

Abstract: The present invention relates to a method and apparatus for authenticating various types of digital certificates by using a text embedding method. The execution of the present invention is divided into two cases, one case including images in the certificate and another case not including the images in the certificate, according to the characteristic of the certificate. In the former case, a text embedding method is applied to images included in the certificate to embed a series of information text (a specific number of the certificate, and issuing organization, name of a person in charge, etc.) designated by a person who issues the certificate into the images. In the latter case, there is generated an image imperceptible to the human eye but having the same color as the ground color of certificate.

Abstract translation: 本发明涉及一种通过使用文本嵌入方法来认证各种类型的数字证书的方法和装置。 根据证书的特征，将本发明的执行分为两种情况，一种情况包括证书中的图像和不包括证书中的图像的另一种情况。 在前一种情况下，将文本嵌入方法应用于证书中包含的图像，以嵌入一系列信息文本（特定号码的证书，发行机构，负责人的姓名等），由人指定 谁将证书发布到图像中。 在后一种情况下，产生了人眼不可察觉但具有与证书的底色相同的颜色的图像。

公开(公告)号：US20010046308A1

公开(公告)日：2001-11-29

申请号：US09907256

申请日：2001-07-17

Inventor： Hirotaka Nakano ,  Masahiro Hashimoto ,  Koji Manabe

IPC: G06K009/00 ,  G06K009/36 ,  G06K009/46

CPC classification number: H04N19/00 ,  G06T1/0021 ,  G06T1/0035 ,  G06T1/20 ,  G06T2201/0052 ,  G06T2201/0053 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/32187 ,  H04N1/32192 ,  H04N1/32277 ,  H04N19/467 ,  H04N19/60 ,  H04N21/23892 ,  H04N21/8358 ,  H04N2201/324

Abstract: An image data encoding system is disclosed, that comprises a discrete cosine transforming means for discrete-cosine transforming the original image, an electronic watermark data embedding means for embedding the electronic watermark data in the data that has been transformed by the discrete cosine transforming means, and a data selecting means for selecting the output signal of the discrete cosine transforming means or the output signal of the electronic watermark data embedding means. Another image data encoding system is also disclosed, that comprises an electronic watermark embedding means for embedding electronic watermark data selected from a plurality of types of electronic watermark data to the digital image data, wherein at least one of the plurality of types of electronic watermark data is predetermined electronic watermark data that does not affect the digital image data even if the electronic watermark data is embedded in the digital image data.

Abstract translation: 公开了一种图像数据编码系统，其包括用于离散余弦变换原始图像的离散余弦变换装置，用于将电子水印数据嵌入已由离散余弦变换装置变换的数据中的电子水印数据嵌入装置， 以及数据选择装置，用于选择离散余弦变换装置的输出信号或电子水印数据嵌入装置的输出信号。 还公开了另一种图像数据编码系统，其包括用于将从多种类型的电子水印数据中选出的电子水印数据嵌入数字图像数据的电子水印嵌入装置，其中，多种类型的电子水印数据 即使将电子水印数据嵌入在数字图像数据中也是不影响数字图像数据的预定电子水印数据。

公开(公告)号：US5949885A

公开(公告)日：1999-09-07

申请号：US920365

申请日：1997-08-29

Applicant: F. Thomson Leighton

Inventor： F. Thomson Leighton

IPC: G06F1/00 ,  G06F21/00 ,  G06T1/00 ,  G11B20/00 ,  H04N1/32 ,  H04N5/913 ,  G09C5/00 ,  H04L9/00

CPC classification number: H04N5/913 ,  G06F21/10 ,  G06T1/005 ,  G06T1/0071 ,  H04N1/32144 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/32304 ,  G06F2221/0737 ,  G06T2201/0063 ,  G06T2201/0081 ,  G06T2201/0083 ,  G11B20/00086 ,  G11B20/00884 ,  H04N2005/91335 ,  H04N2201/3233 ,  H04N2201/3236 ,  H04N2201/324 ,  H04N2201/327

Abstract: A watermarking procedure wherein each of a set of copies of the work has a slightly-modified form of a "baseline" watermark that is placed within a critical region of the data. The slight variations in the watermarks, however, are not perceptually visible and do not interfere with the work. If multiple persons collude to attempt to create an "illicit" copy of the work (i.e., a copy without a watermark), however, at least one of the modified watermarks is present in the copy, thereby identifying both the illicit copy and the copier.

Abstract translation: 一种水印过程，其中作品的一组副本中的每一个具有放置在数据的关键区域内的“基线”水印的稍微修改形式。 然而，水印的轻微变化在感知上不可见，不会干扰工作。 然而，如果多个人串通尝试创建该作品的“非法”副本（即，没有水印的副本），那么至少一个修改的水印存在于副本中，从而识别非法复制和复印机 。

公开(公告)号：KR1020010090545A

公开(公告)日：2001-10-18

申请号：KR1020010015295

申请日：2001-03-23

Applicant: 닛폰 덴키 가부시끼 가이샤

Inventor： 타나카노부유키

IPC: H04N5/913

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: PURPOSE: To provide an electronic watermark data insertion device and an electronic watermark detector that can insert and detect electronic watermark data with a simple configuration without deteriorating the image quality. CONSTITUTION: An electronic watermark data insertion unit 34 of the electronic watermark data insertion device stores insertion information to designate electronic watermark data to be inserted in advance by each pixel block and inserts the electronic watermark data designated from an electronic watermark data table 42 based on the insertion information to each pixel block. The electronic watermark data detector allows an electronic watermark data extract device 66 to extract prominent image data in a frequency region depending on the electronic watermark data inserted by each pixel block, and the electronic watermark data detector 70 calculates statistic similarity. An electronic watermark data adder 71 accumulates the image data for a prescribed time and the electronic watermark data detector discriminates that the electronic watermark data are detected when the result of accumulation, which is reset after a lapse of a prescribed time or when the accumulated data exceeds a predetermined threshold value, exceeds this threshold.

Abstract translation: 目的：提供一种电子水印数据插入装置和电子水印检测器，可以用简单的配置插入和检测电子水印数据，而不会降低图像质量。 构成：电子水印数据插入装置的电子水印数据插入单元34存储插入信息以指定要由每个像素块预先插入的电子水印数据，并且基于电子水印数据表42插入从电子水印数据表42指定的电子水印数据 插入信息到每个像素块。 电子水印数据检测器允许电子水印数据提取装置66根据由每个像素块插入的电子水印数据在频域中提取突出图像数据，电子水印数据检测器70计算统计学相似度。 电子水印数据加法器71将规定时间的图像数据进行累加，电子水印数据检测器鉴别在经过规定时间之后复位的累积结果或累积数据超过时累积的结果时，检测出电子水印数据 预定阈值超过该阈值。

公开(公告)号：KR1020010050788A

公开(公告)日：2001-06-25

申请号：KR1020000057646

申请日：2000-09-30

Applicant: 가부시끼가이샤 도시바

Inventor： 무라타니히로프미

IPC: H04N21/83 ,  H04N21/8358

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

Abstract: PURPOSE: A unit for detecting a watermark is provided to realize firmness regarding a collusion attack, by not increasing a code length of a built-in code as watermark information even if the whole number of users and colluders are large. CONSTITUTION: One code word selected from a plurality of code words forming a single code is outputted in response to an inputted user identification number. A correlation value is obtained between the outputted code word and a content. Whether a code word corresponding to the inputted user identification number based upon the correlation value is in the content is determined. The unit(2) for detecting a watermark detects watermark information including the information of the user identification number from a predetermined content.

Abstract translation: 目的：提供用于检测水印的单元，以便即使整个用户数量和共谋者数量较大，也不会将内置代码的代码长度增加为水印信息，从而实现串通攻击的牢固性。 构成：响应于输入的用户标识号，输出从形成单个代码的多个代码字中选择的一个代码字。 在输出的代码字和内容之间获得相关值。 确定基于相关值的与输入的用户识别号码相对应的码字是否在内容中。 用于检测水印的单元（2）从预定内容检测包括用户标识号的信息的水印信息。

公开(公告)号：KR100548983B1

公开(公告)日：2006-02-02

申请号：KR1020000065038

申请日：2000-11-02

Applicant: 주식회사 다고아이티 ,  주식회사 마크애니

Inventor： 최종욱 ,  최기철

IPC: G06F17/00 ,  G06F21/20

CPC classification number: H04N1/32144 ,  G06F21/64 ,  H04N1/32101 ,  H04N1/32315 ,  H04N2201/3233 ,  H04N2201/324 ,  H04N2201/327

Abstract: 본 발명은 텍스트 임베딩(Text Embedding) 방법을 이용한 각종 디지털 증명서의 인증을 위한 방법 및 장치에 관한 것이다. 본 발명에 따르면 증명서가 위조 또는 변조되었을 경우, 그 변동 상황을 알아내고, 위조 및 변조된 부분을 검출하며, 변동 상황 검출과 함께 원본 증명서의 내용을 복원하는 방법과 기술 및 장치가 제공된다.
본 발명은 인증을 위한 일련의 정보를 담은 텍스트(이하 "정보 텍스트")가 삽입된 증명서를 발급하기 위한 장치 및 소프트웨어, 텍스트가 삽입된 증명서를 인식하기 위한 장치 및 소프트웨어가 포함된다. 본 발명의 실행은 증명서의 특성에 의하여 두 가지로 나뉘어 진다. 증명서 내용에 이미지 형태가 포함되었을 경우와 증명서에 이미지 형태가 포함되어 있지 않을 경우이다. 증명서에 이미지가 포함되는 경우, 증명서에 포함되어있는 이미지에 텍스트 임베딩 기법을 적용하여 발급자가 정하는 일련의 정보 텍스트(증명서 고유 번호나 발급기관, 담당자 이름 등)를 삽입하며, 증명서에 이미지가 포함되어있지 않을 경우는 증명서의 바탕색과 같은 색으로 되어 육안으로 식별이 불가능한 이미지(이하 "투명 이미지" : 보통 흰색 이미지)를 생성하고 삽입하고자 하는 정보 텍스트를 상기 투명 이미지에 삽입한 후 증명서에 다시 삽입한다. 삽입하는 정보 텍스트는 영문 텍스트를 기본으로 하여, 한국어, 중국어, 일본어를 포함한 2바이트 완성형 코드인 국제 표준인 ISO 10646 코드, Unicode를 포함한다. 디지털 증명서의 발급을 위한 텍스트 임베딩 방법은 증 명서에 이미지가 포함될 경우는 세 단계 즉, 삽입할 정보 텍스트를 생성하는 단계, 생성한 정보 텍스트를 증명서에 포함되어 있는 이미지에 삽입하는 단계, 삽입한 정보 텍스트를 추출하여 증명서를 인증하는 단계로 이루어진다. 증명서에 이미지 형태의 파일이 포함되어 있지 않은 경우는 삽입할 정보 텍스트를 생성하는 단계, 투명 이미지를 생성하는 단계, 생성한 정보 텍스트를 투명 이미지에 삽입하여 증명서에 넣는 단계, 증명서의 인증을 위해 투명 이미지에서 정보 텍스트를 추출하는 단계로 이루어진다.
본 발명은 증명하려는 내용이 담긴 문서 형태를 기본으로 하여 작성되고 발급되는 각종 증명서의 위조 및 변조를 방지할 수 있으며, 증명서 제공자와 증명서 사용자의 권익을 보호할 수 있다.
전자문서, 인증, 나머지 연산자, 디지털 증명서,바 코드