公开(公告)号：US5694330A

公开(公告)日：1997-12-02

申请号：US230249

申请日：1994-04-20

申请人： Keiichi Iwamura ,  Takayuki Aizawa ,  Izumi Narita ,  Takatoshi Suzuki

发明人： Keiichi Iwamura ,  Takayuki Aizawa ,  Izumi Narita ,  Takatoshi Suzuki

IPC分类号： G06F11/10 ,  H03M13/00 ,  H03M13/15

CPC分类号： H03M13/151

摘要： A multiplier calculates a product S'(x)=S(x).multidot..lambda.(x) mod X.sup.d-1 of a syndrome polynomial S(x) generated by a syndrome generator and an erasure position polynomial .lambda.(x) generated by an erasure position polynomial generator, modulo X.sup.d-1. A constant multiplier sequentially multiplies coefficients of the polynomial S'(x) and the erasure position polynomial .lambda.(x) with a power of a primitive root .alpha. of a code. The power exponents in this multiplication are determined in units of coefficients. Every time this multiplication is executed, an adder sequentially adds predetermined combinations of products. A plurality of arithmetic and logic operations according to the numbers of correctable erasures and errors are sequentially executed using the sums. A divisor and dividend are selected in accordance with the number of erasures included in the code on the basis of the plurality of arithmetic and logic operation results. A division is executed using the selected divisor and dividend. A value at a position, discriminated to be an error position, of the code is corrected based on the division result, thus performing error correction including erasure correction with a simple circuit arrangement.

摘要翻译： 乘数计算由校正子发生器产生的校正子多项式S（x）的乘积S'（x）= S（x）×λ（x）mod Xd-1以及由擦除产生的擦除位置多项式λ（x） 位数多项式生成器，模Xd-1。 常数乘法器将多项式S'（x）和擦除位置多项式λ（x）的系数与代码的原始根α的幂相乘。 该乘法中的幂指数以系数为单位确定。 每次执行该乘法时，加法器依次添加预定的乘积组合。 使用这些和顺序地执行根据可校正的擦除和错误的数量的多个算术和逻辑运算。 根据多个算术和逻辑运算结果，根据代码中包含的擦除次数来选择除数和除数。 使用选定的除数和股息执行分割。 基于分割结果来校正代码的被判定为错误位置的位置处的值，从而以简单的电路布置执行包括消失校正的纠错。

公开(公告)号：US5315600A

公开(公告)日：1994-05-24

申请号：US711990

申请日：1991-06-07

申请人： Keiichi Iwamura ,  Takayuki Aizawa ,  Izumi Narita ,  Takatoshi Suzuki

发明人： Keiichi Iwamura ,  Takayuki Aizawa ,  Izumi Narita ,  Takatoshi Suzuki

IPC分类号： H03M13/00 ,  G06F11/10 ,  H03M13/15 ,  G06F11/00

CPC分类号： G06F11/10 ,  H03M13/151

摘要： Respective processes of decoding in error correction are subjected to parallel processing using a plurality of processing elements (PEs) each having the same configuration. At any given time, when processing of one process has been terminated, processing proceeds to a PE having the highest priority among PEs waiting for processing. The PE which has received data recognizes and executes the next process for that data.

摘要翻译： 使用具有相同配置的多个处理元件（PE）对误差校正中的解码的各个处理进行并行处理。 在任何给定的时间，当一个进程的处理已经终止时，处理进行到等待处理的PE中具有最高优先级的PE。 已接收数据的PE识别并执行该数据的下一个进程。

公开(公告)号：US07613350B2

公开(公告)日：2009-11-03

申请号：US11129417

申请日：2005-05-16

申请人： Keiichi Iwamura

发明人： Keiichi Iwamura

IPC分类号： G06K9/46

CPC分类号： G06Q20/3433 ,  G06T13/80 ,  G07F7/02 ,  G07F7/086 ,  G09G5/12 ,  G09G5/42 ,  G09G2340/02 ,  G09G2340/125 ,  H04N5/4401 ,  H04N5/765 ,  H04N5/77 ,  H04N5/775 ,  H04N5/85 ,  H04N19/25 ,  H04N19/27 ,  H04N21/23412 ,  H04N21/234318 ,  H04N21/2347 ,  H04N21/2541 ,  H04N21/41407 ,  H04N21/42203 ,  H04N21/4223 ,  H04N21/44012 ,  H04N21/4405 ,  H04N21/4627 ,  H04N21/47205 ,  H04N21/4786 ,  H04N21/835

摘要： The invention generates moving image information obtained by compositing a moving image of a user and objects selected by the user, and provides the generated moving image information to the user. For instance, when the user has inserted a coin or coins into a device, a select menu of pre-stored stories is displayed, and the user selects one story from the menu. Then, the user selects a desired background scene and feature player in that story to determine pre-stored objects. After that, an image of the user is sensed, and is stored as a moving image object. The moving image object is then composited with the previously selected objects according to MPEG 4 to generate single stream information. The generated moving image information is then delivered to the user.

摘要翻译： 本发明生成通过合成用户的运动图像和用户选择的对象而获得的运动图像信息，并将生成的运动图像信息提供给用户。 例如，当用户将硬币或硬币插入到设备中时，显示预先存储的故事的选择菜单，并且用户从菜单中选择一个故事。 然后，用户在该故事中选择所需的背景场景和特征播放器以确定预先存储的对象。 之后，感测到用户的图像，并将其存储为运动图像对象。 然后，根据MPEG 4将运动图像对象与先前选择的对象合成以产生单个流信息。 然后将生成的运动图像信息传递给用户。

公开(公告)号：US07571323B2

公开(公告)日：2009-08-04

申请号：US10759364

申请日：2004-01-16

申请人： Keiichi Iwamura ,  Kitahiro Kaneda

发明人： Keiichi Iwamura ,  Kitahiro Kaneda

IPC分类号： H04L9/00 ,  G06K9/00

CPC分类号： H04N1/00846 ,  G06T1/0021 ,  G06T2201/0051 ,  G06T2201/0062 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/00864 ,  H04N1/00867 ,  H04N1/0087 ,  H04N1/00875 ,  H04N1/00883 ,  H04N1/32144 ,  H04N2201/3246 ,  H04N2201/327

摘要： A method for image processing comprising inputting and reading a combined image that includes a latent image unperceivable by the human eye, a patterned image in the background allowing the latent image to appear clearly on a recording medium when data recorded on a recording medium is copied onto another recording medium, and text and/or image data embedded with a digital watermark. The text and/or image data is extracted from the combined image and the digital watermark extracted from the text and/or image data. A permission code enabling copying of image data composed of a combination of a patterned image and the extracted text and/or image data onto a recording medium is input. The copying is regulated based on the extracted digital watermark and the permission code.

摘要翻译： 一种用于图像处理的方法，包括输入和读取包括人眼不可察觉的潜像的组合图像，背景中的图案化图像，允许潜像在记录介质上记录的数据被复制到记录介质上清晰地显示在其上 另一种记录介质，以及嵌入数字水印的文本和/或图像数据。 从组合图像和从文本和/或图像数据提取的数字水印中提取文本和/或图像数据。 输入允许将由图案化图像和提取的文本和/或图像数据的组合组成的图像数据复制到记录介质上的许可代码。 基于提取的数字水印和许可代码对复制进行调整。

公开(公告)号：US07552335B2

公开(公告)日：2009-06-23

申请号：US10712869

申请日：2003-11-12

申请人： Keiichi Iwamura

发明人： Keiichi Iwamura

IPC分类号： H04L9/00

CPC分类号： H04N1/32128 ,  H04N2201/3233 ,  H04N2201/3245 ,  H04N2201/3274 ,  H04N2201/3278

摘要： The present invention provides a technique that allows for a valid modification that is authorized by the author of data, while assuring the originality of the data. An information processing apparatus for processing original data created by a predetermined author is provided. The information processing apparatus includes a modification-information storing unit for storing modification information regarding a modification onto a storage medium when the original data is modified, and a modification-assuring-information creating unit for creating modification assuring information for assuring that the modification information is true.

摘要翻译： 本发明提供了一种技术，其允许由数据作者授权的有效修改，同时确保数据的原创性。 提供了一种用于处理由预定作者创建的原始数据的信息处理装置。 该信息处理装置包括修改信息存储单元，用于当修改原始数据时将关于修改的修改信息存储到存储介质上;修改信息创建单元，用于创建修改确保信息以确保修改信息为 真正。

公开(公告)号：US07535488B2

公开(公告)日：2009-05-19

申请号：US09987832

申请日：2001-11-16

申请人： Satoru Wakao ,  Keiichi Iwamura

发明人： Satoru Wakao ,  Keiichi Iwamura

IPC分类号： H04N5/225 ,  H04N7/167 ,  H04L9/00

CPC分类号： H04N1/32128 ,  H04L9/3247 ,  H04L2209/60 ,  H04N2201/3205 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3274 ,  H04N2201/3278

摘要： An image verification system has an image generation device and a first image verification device. The image generation device includes (a) an image data generation unit that generates image data, and (b) a first verification data generation unit that generates first verification data from the image data using a common key in common key cryptography. The first image verification device includes (a) a first verification unit that verifies, using the image data, the first verification data and the common key, whether the image data is altered, and (b) a second verification data generation unit that generates second verification data from the image data using a private key in public key cryptography without editing the image data, if the first verification unit verifies that the image data is not altered.

摘要翻译： 图像验证系统具有图像生成装置和第一图像验证装置。 图像生成装置包括：（a）生成图像数据的图像数据生成单元，以及（b）第一验证数据生成单元，其使用公共密钥加密中的公共密钥从图像数据生成第一验证数据。 第一图像验证装置包括：（a）第一验证单元，其使用图像数据验证第一验证数据和公共密钥，是否改变图像数据;以及（b）生成第二验证数据的第二验证数据生成单元 如果第一验证单元验证图像数据未被改变，则使用公共密钥加密中的专用密钥从图像数据获得的验证数据，而不编辑图像数据。

公开(公告)号：US20080276095A1

公开(公告)日：2008-11-06

申请号：US11574089

申请日：2005-10-25

申请人： Keiichi Iwamura

发明人： Keiichi Iwamura

IPC分类号： H04L9/32

CPC分类号： H04L9/3242 ,  H04L9/0869 ,  H04L9/3247

摘要： A verification information generation system comprises a first and a second data processing apparatuses. The first data processing apparatus comprises a holding unit adapted to hold a first secret information which is set in advance, a reception unit adapted to receive information associated with the second secret information from the second data processing apparatus, a key information generation unit adapted to generate key information on the basis of the first secret information and the information associated with the second secret information, a key derivation auxiliary information generation unit adapted to generate key derivation auxiliary information which allows the key information to be derived from the second secret information, a verification information generation unit adapted to generate verification information on the basis of information to be verified and the key information, and an output unit adapted to output the information to be verified, the verification information, and the key derivation auxiliary information. The second secret information is information which is set in advance in the second data processing apparatus.

摘要翻译： 验证信息生成系统包括第一和第二数据处理装置。 第一数据处理装置包括：保持单元，适于保持预先设置的第一秘密信息;接收单元，适于从第二数据处理装置接收与第二秘密信息相关联的信息;密钥信息生成单元，适于生成 基于所述第一秘密信息和与所述第二秘密信息相关联的信息的密钥信息，密钥导出辅助信息生成单元，其适于生成允许从所述第二秘密信息导出所述密钥信息的密钥导出辅助信息，验证 信息生成单元，其适于基于要验证的信息和密钥信息生成验证信息;以及输出单元，适于输出要被验证的信息，验证信息和密钥导出辅助信息。 第二秘密信息是在第二数据处理装置中预先设定的信息。

公开(公告)号：US07171021B2

公开(公告)日：2007-01-30

申请号：US11078376

申请日：2005-03-14

申请人： Jun Yoshida ,  Keiichi Iwamura

发明人： Jun Yoshida ,  Keiichi Iwamura

IPC分类号： G06K9/00

CPC分类号： G06F21/10 ,  G06F2221/0737 ,  G06T1/0021

摘要： The primary objective of the present invention is the prevention, or the detection, of an illegal act involving digital contents. To achieve this objective, whether an illegal procedure involving digital contents has been performed is determined based on results obtained by performing a predetermined operation for at least a part of the digital contents, and a predetermined process is performed for the digital contents in accordance with the results of determination.

摘要翻译： 本发明的主要目的是预防或检测涉及数字内容的非法行为。 为了实现该目的，基于通过对数字内容的至少一部分执行预定操作而获得的结果来确定是否执行涉及数字内容的非法程序，并且根据该数字内容执行预定处理 测定结果。

公开(公告)号：US20060253448A1

公开(公告)日：2006-11-09

申请号：US11458439

申请日：2006-07-19

申请人： Nobuhiro Tagashira ,  Keiichi Iwamura ,  Tsutomu Ando

发明人： Nobuhiro Tagashira ,  Keiichi Iwamura ,  Tsutomu Ando

IPC分类号： G06F17/30

CPC分类号： H04N21/2541 ,  G06Q50/184 ,  H04N21/835

摘要： A data processing apparatus for reproducing a plurality of object streams having predetermined information severally, which apparatus is provided with an IPMP information extraction circuit (54) for extracting hierarchical management information for controlling the permission and inhibition of the usage of each object from input data, a usage status check circuit (56) for judging whether the usage of an upper level object of a subjected object is prohibited or not in accordance with the IPMP information extracted by the IPMP information extraction circuit (54), and a control information extraction circuit (58) for controlling the data processing apparatus to prohibit the usage of the subjected object if the usage of the upper level object of the subjected object is prohibited in accordance with a judgment result by the usage status check circuit (56).

摘要翻译： 一种数据处理装置，用于分别再现具有预定信息的多个对象流，该装置设置有IPMP信息提取电路（54），用于从输入数据中提取用于控制每个对象的使用的许可和禁止的分层管理信息， 使用状况检查电路（56），根据IPMP信息提取电路（54）提取出的IPMP信息，判定受影响对象的上位对象的使用是否被禁止;以及控制信息提取电路 58），用于根据使用状态检查电路（56）的判断结果，如果禁止使用被摄体的上位对象，则控制数据处理装置禁止使用被处理物体。

公开(公告)号：US20060050926A1

公开(公告)日：2006-03-09

申请号：US11222958

申请日：2005-09-12

申请人： Keiichi Iwamura

发明人： Keiichi Iwamura

IPC分类号： G06K9/00

CPC分类号： H04N1/32203 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32272 ,  H04N2201/3233 ,  H04N2201/327

摘要： An encrypted image C(i, j) is generated by exclusively ORing pseudo random number values, which are generated using a key k0 as a key, and respective bits, except for the LSBs, of B pixel data at respective pixel positions (i, j) of digital image data I(i, j). First check bits B(i, j) corresponding to the pixel positions of pixels are generated based on the image C(i, j) and a conversion table. A digitally watermarked image I′(i, j) is obtained by embedding the first check bits in the LSBs of the corresponding pixel data of the digital image data. Check bits U(i, j) are obtained by encrypting pixel data by exclusively ORing respective bits, except for the LSBs, of B pixel data at positions (i, j) of the image I′(i, j) and the pseudo random numbers. If each check bit U(i, j) matches the LSB of the corresponding B pixel data, it is determined that the corresponding pixel is free from tampering.