公开(公告)号：US07463736B2

公开(公告)日：2008-12-09

申请号：US10434161

申请日：2003-05-09

Applicant: Nobuhiro Tagashira ,  Keiichi Iwamura ,  Junichi Hayashi ,  Yuji Suga

Inventor： Nobuhiro Tagashira ,  Keiichi Iwamura ,  Junichi Hayashi ,  Yuji Suga

IPC: H04N7/167

CPC classification number: H04N21/234327 ,  H04L9/0836 ,  H04N21/26613

Abstract: In an image process apparatus, a key different for each level of hierarchy is generated on the basis of a specific key with respect to image data having a hierarchical structure, the image data in each level of the hierarchy is encrypted using the generated key for each level, and the specific key is managed, so that key management can be easily performed while the image data having a hierarchical structure is enciphered using different keys for each level of the hierarchy.

Abstract translation: 在图像处理装置中，基于具有层次结构的图像数据的特定键生成针对每个层次的不同级别的关键字，使用所生成的密钥对层级的每个级别中的图像数据进行加密 级别，并且特定密钥被管理，使得可以容易地执行密钥管理，同时使用层级结构的每个级别使用不同的密钥对具有分层结构的图像数据进行加密。

公开(公告)号：US20080279380A1

公开(公告)日：2008-11-13

申请号：US11571009

申请日：2005-08-31

Applicant: Junichi Hayashi

Inventor： Junichi Hayashi

IPC: H04L9/06

CPC classification number: H04N1/4486 ,  G09C5/00 ,  H04L9/088

Abstract: The present invention aims to provide the technique of appropriately enabling the encryption and decryption to the partial area with respect to the image data to which the partial encryption and the multiple encryptions have been applied. More specifically, the predetermined image area in the image data is acquired by a reproduction area designation unit, the overlap area of the acquired image area and the encrypted encryption area is calculated by an overlap judgment unit, the key information corresponding to the calculated overlap area is acquired by a decryption key acquisition unit, and the image data corresponding to the overlap area is acquired by a decryption key acquisition unit, and the image data corresponding to the overlap area is subjected to the encryption and decryption by an image decryption unit by using the acquired key information.

Abstract translation: 本发明的目的在于提供一种适用于相对于应用了部分加密和多次加密的图像数据对部分区域进行加密和解密的技术。 更具体地，通过再现区域指定单元获取图像数据中的预定图像区域，通过重叠判断单元计算所获取的图像区域和加密加密区域的重叠区域，与计算出的重叠区域相对应的密钥信息 由解密密钥获取单元获取，并且通过解密密钥获取单元获取对应于重叠区域的图像数据，并且通过使用图像解密单元对与重叠区域对应的图像数据进行加密和解密 获取的关键信息。

公开(公告)号：US07362860B2

公开(公告)日：2008-04-22

申请号：US10789986

申请日：2004-03-02

Applicant: Junichi Hayashi

Inventor： Junichi Hayashi

IPC: H04N7/167

CPC classification number: H04N1/4486 ,  H04N1/00217 ,  H04N1/4426 ,  H04N1/444

Abstract: This invention allows the encryption side to set whether an image playback apparatus should play back image data in a scrambled state or a non-scrambled state. When a code-block of input image data is an object to be encrypted, it is encrypted. In playing back the data, it is determined whether playback is to be executed by using the encrypted code-block (the scrambling playback mode is to be set). To inhibit use of the encrypted code-block, a terminating marker is placed at the start of the code-block. To use the encrypted code-block, the terminating marker is placed at the end of the code-block.

Abstract translation: 本发明允许加密侧设置图像播放装置是否应以加扰状态或非加扰状态播放图像数据。 当输入图像数据的代码块是要加密的对象时，它被加密。 在回放数据时，确定是否通过使用加密代码块执行重放（加扰重放模式被设置）。 为了禁止使用加密的代码块，在代码块的开始处放置终止标记。 要使用加密的代码块，终止标记位于代码块的末尾。

公开(公告)号：US07339599B2

公开(公告)日：2008-03-04

申请号：US10762038

申请日：2004-01-20

Applicant: Junichi Hayashi

Inventor： Junichi Hayashi

IPC: G09G5/00 ,  G06K9/00 ,  G06K1/00 ,  G06K15/00

CPC classification number: G06T1/0021 ,  G06T2201/0051 ,  G06T2201/0061 ,  H04N1/00864 ,  H04N1/00867 ,  H04N1/32203 ,  H04N1/32208

Abstract: An object of the present invention is to provide a technique by which machines can determine whether printed material is an original or a copy. A technique for outputting printed material which has an effect similar to that of security paper using normal paper instead of specially printed paper such as the security paper is provided. An image-processing apparatus generates a new image by expressing a latent image area with dots of a first dot size and a background area with dots of a second dot size which is different from the first dot size, and generates another image by moving each of the dots included in the latent image area in accordance with a bit value at the corresponding bit position in additional information.

Abstract translation: 本发明的目的是提供一种技术，通过该技术机器可以确定印刷材料是原件还是复印件。 提供了一种用于输出具有类似于安全纸的效果的打印材料的技术，其使用普通纸而不是诸如安全纸的特殊印刷纸。 图像处理装置通过用与第一点尺寸不同的点的第一点尺寸的点和背景区域的点表示潜像区域来生成新图像，并且通过移动 根据附加信息中的相应位位置处的位值，包含在潜像区域中的点。

公开(公告)号：US20070192250A1

公开(公告)日：2007-08-16

申请号：US11621785

申请日：2007-01-10

Applicant: Yasuhiro Nakamoto ,  Junichi Hayashi

Inventor： Yasuhiro Nakamoto ,  Junichi Hayashi

IPC: H04L9/00 ,  H04K1/00

CPC classification number: H04L9/0861 ,  H04L9/0894

Abstract: An information processing apparatus that generates private information used as one of an encryption key for encrypting data or a generation key for generating falsification detection information used in detecting falsification of data, comprises a storage unit adapted to prestore key information, an input unit adapted to input calculation target information, a calculating unit adapted to perform a calculation on targeted information based on the key information held in the storage unit, a detecting unit adapted to detect a predetermined event, and a control unit adapted, when triggered by detection of the event by the detecting unit, to perform controls to generate the private information by making the calculating unit perform the calculation with the input calculation target information as the targeted information, and to place the key information stored in the storage unit in an unusable state.

Abstract translation: 一种信息处理装置，其生成用作加密数据的加密密钥之一的私有信息或用于产生用于检测数据伪造的伪造检测信息的生成密钥，包括适于预存密钥信息的存储单元，适于输入的输入单元 计算对象信息，计算单元，其适于基于保存在存储单元中的关键信息对目标信息进行计算;适合于检测预定事件的检测单元;以及控制单元，当通过检测事件触发时， 所述检测单元通过使所述计算单元以所输入的计算目标信息作为目标信息进行计算，并且将存储在所述存储单元中的所述密钥信息置于不可用状态来执行用于生成所述私人信息的控制。

公开(公告)号：US20070150962A1

公开(公告)日：2007-06-28

申请号：US11615128

申请日：2006-12-22

Applicant: Junichi Hayashi

Inventor： Junichi Hayashi

IPC: H04L9/32

CPC classification number: G06F21/10 ,  G06F21/6209 ,  H04L9/0844 ,  H04L2209/603 ,  H04N1/00204 ,  H04N1/32101 ,  H04N1/4486 ,  H04N2201/001 ,  H04N2201/3246

Abstract: Upon applying a DRM protection process to an image which is generated by an image processing apparatus, which doesn't have any communication means that allows direct communications with a PC, without any alteration, encryption of the image in the apparatus and that of the image in the PC as an internal process of the DRM are required, resulting in poor efficiency. The apparatus executes a part of the DRM protection process for the image, and outputs the encrypted image. The PC receives the image which has undergone the part of the DRM protection process, executes the remaining part of the DRM protection process, and outputs the image which has undergone the DRM protection process. In this case, the PC transmits use condition of the input image to a license server, receives signed use condition from the server, and combines the signed use condition with the input encrypted image.

Abstract translation: 在对由图像处理装置生成的图像应用DRM保护处理的情况下，不进行与PC直接通信的任何通信手段，而不进行任何改变，图像在图像中的加密和图像的加密 在PC中作为DRM的内部过程是必需的，导致效率差。 该装置执行图像的DRM保护处理的一部分，并输出加密图像。 PC接收经过DRM保护处理的部分的图像，执行DRM保护处理的剩余部分，并输出已经经过DRM保护处理的图像。 在这种情况下，PC将输入图像的使用条件发送到许可证服务器，从服务器接收签名使用条件，并将签名的使用条件与输入的加密图像组合。

公开(公告)号：US20060149762A1

公开(公告)日：2006-07-06

申请号：US11329037

申请日：2006-01-11

Applicant: Yuji Suga ,  Junichi Hayashi

Inventor： Yuji Suga ,  Junichi Hayashi

IPC: G06F7/00

CPC classification number: H04L9/0643 ,  H04L9/0836 ,  H04L2209/60

Abstract: It is possible to safely constitute a key management method having an access structure equivalent to the hierarchical key management method with a small amount of calculations. The method includes: a setting step for setting a set (,) of the number of times a one-way hash function is executed for each of the elements of the rank i; a key generation step for generating two separate keys for the elements as the value of the number of times the one-way function has been executed corresponding to the set of the number of times which has been set for the elements of the two original keys for each of the elements; and a key delivery step for delivering the two separate keys for the elements to each of the elements. Furthermore, the method includes an initial key generation step for calculating N keys with a route node positioned at the most significant node when generating a key at each node from a parent node and performing key delivery according to the hierarchical relationship expressed in a directed graph having no cycle; and a node key generation step for generating the value of the number of predetermined times the one-way function is executed according to the execution specification for M keys (M≦N) among the N initial keys in each node, as the M node keys for the node.

Abstract translation: 可以安全地构成具有与分级密钥管理方法等同于具有少量计算的访问结构的密钥管理方法。 该方法包括：设置步骤，用于设置针对秩i的每个元素执行单向散列函数的次数的集合（，）; 密钥生成步骤，用于为元素生成两个单独的密钥作为执行单向功能的次数的值，对应于为两个原始密钥的元素设置的次数集合， 每个元素; 以及用于将元件的两个单独的键递送到每个元件的关键递送步骤。 此外，该方法包括：初始密钥生成步骤，用于当从父节点生成每个节点处的密钥并且根据在有向图中表示的分层关系执行密钥递送时，利用位于最重要节点处的路由节点计算N个密钥， 没有循环; 以及节点密钥生成步骤，用于根据每个节点中的N个初始密钥中的M个密钥（M <= N）的执行规范，生成执行单向功能的预定次数的值，作为M个节点 节点的键。

公开(公告)号：US06993148B1

公开(公告)日：2006-01-31

申请号：US09615577

申请日：2000-07-13

Applicant: Tomoyuki Miyashita ,  Takeshi Makita ,  Junichi Hayashi ,  Tomochika Murakami

Inventor： Tomoyuki Miyashita ,  Takeshi Makita ,  Junichi Hayashi ,  Tomochika Murakami

IPC: G06K9/00

CPC classification number: G06T1/0064 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061

Abstract: This invention reduces degradation in image quality and improves altered portion specifying accuracy in a digital watermark technology. For this purpose, an apparatus of this invention inputs image data and information such as a copyright holder name to be embedded in the image data (S1, S2). A mask pattern having a blue noise characteristic for intermediate- and high-frequency components is set at the image data start position, and pixel data at a target embedding position in the mask pattern is quantized (S5). The quantization error at this time corresponds to the bit information to be embedded at that position. This processing is repeatedly performed for the entire image (S6-S9).

Abstract translation: 本发明可降低图像质量的劣化，并且改善数字水印技术中的部分指定精度。 为此，本发明的装置输入要嵌入在图像数据中的图像数据和诸如版权持有者名称的信息（S 1，S 2）。 在图像数据开始位置设置具有中高频分量的蓝噪声特性的掩模图案，对掩模图案中的目标嵌入位置的像素数据进行量化（S 5）。 此时的量化误差对应于要嵌入该位置的位信息。 对整个图像重复执行该处理（S 6 -S 9）。

公开(公告)号：US06873711B1

公开(公告)日：2005-03-29

申请号：US09676949

申请日：2000-10-02

Applicant: Tomochika Murakami ,  Junichi Hayashi

Inventor： Tomochika Murakami ,  Junichi Hayashi

IPC: H04N1/41 ,  G06T1/00 ,  H04N1/32 ,  H04N1/387 ,  H04N1/46 ,  G06K9/00 ,  G06K15/00 ,  H04N1/40 ,  H04N9/43

CPC classification number: G06T1/005 ,  G06T1/0028 ,  G06T2201/0065 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/32149 ,  H04N1/32229 ,  H04N1/32277 ,  H04N1/32309 ,  H04N2201/3233 ,  H04N2201/327 ,  H04N2201/33378

Abstract: An image processing device is provided to efficiently embed digital watermark information in a gray scale image while suppressing deterioration in the image quality. The image processing device includes an input unit for inputting gray-scale image data in which each pixel is formed of one component. A converter converts the format of the gray-scale image data into color image data in which each pixel is formed of a plurality of components. An embedding unit embeds the digital watermark information in part of the components of the color image data obtained by the converter.

Abstract translation: 提供一种图像处理装置，用于在抑制图像质量劣化的同时，将灰度图像中的数字水印信息有效地嵌入。 图像处理装置包括用于输入其中每个像素由一个分量形成的灰度图像数据的输入单元。 A转换器将灰度图像数据的格式转换成其中每个像素由多个分量形成的彩色图像数据。 嵌入单元将数字水印信息嵌入由转换器获得的彩色图像数据的部分成分。

公开(公告)号：US06826290B1

公开(公告)日：2004-11-30

申请号：US09688108

申请日：2000-10-16

Applicant: Tomochika Murakami ,  Keiichi Iwamura ,  Junichi Hayashi

Inventor： Tomochika Murakami ,  Keiichi Iwamura ,  Junichi Hayashi

IPC: G06K900

CPC classification number: G06T1/0064 ,  G06T1/0028 ,  G06T2201/0065

Abstract: To provide a variety of methods for extracting digital watermark information from an image as correctly as possible. For example, a first pattern arrangement and a second pattern arrangement which is different from the first pattern arrangement for use in a calculation for extracting the digital watermark information are provided. A state of an original image without the digital watermark information embedded is inferred, using a second pattern arrangement, and a reliability of the digital watermark information to be extracted in accordance with the state is determined. Or to decide the embedding position of the digital watermark information from the image data, the extracting start position is discriminated by detecting the positional information by multiple times at the different extracting start positions. Or to detect a geometrical distortion, a registration signal is embedded on the image.

Abstract translation: 提供从图像中​​尽可能正确地提取数字水印信息的各种方法。 例如，提供了与用于提取数字水印信息的计算中使用的第一图案配置不同的第一图案布置和第二图案布置。 推测出没有嵌入数字水印信息的原始图像的状态，使用第二图案排列，并且确定要根据状态提取的数字水印信息的可靠性。 或者为了从图像数据确定数字水印信息的嵌入位置，通过在不同的提取开始位置检测位置信息多次来判别提取开始位置。 或者为了检测几何失真，将注册信号嵌入在图像上。