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1. 发明授权

US08782114B2 Arithmetic device 失效
标题翻译：算术设备
公开(公告)号：US08782114B2
公开(公告)日：2014-07-15
申请号：US13355642
申请日：2012-01-23
申请人： Tomoko Yonemura , Taichi Isogai , Hirofumi Muratani , Atsushi Shimbo , Yoshikazu Hanatani , Kenichiro Furuta , Kenji Ohkuma , Yuichi Komano , Hanae Ikeda
发明人： Tomoko Yonemura , Taichi Isogai , Hirofumi Muratani , Atsushi Shimbo , Yoshikazu Hanatani , Kenichiro Furuta , Kenji Ohkuma , Yuichi Komano , Hanae Ikeda
IPC分类号： G06F7/00 , H04L9/30
CPC分类号： H04L9/3073
摘要： According to one embodiment, a representation converting unit converts a set of n elements (h0, h1, . . . , hn−1) (hi: a member of a finite field Fp^m, 0≦i≦n−1) that is a projective representation of a member g of an n-th degree algebraic torus Tn(Fp^m) (n: positive integer, p: prime number, m: positive integer) into a limited projected representation expressed by a set of n elements (h′0, h′1, . . . , h′n−1) (h′i: a member of the finite field Fp^m, 0≦i≦n−1) in which at least one element out of the n elements is a zero element 0 or an identity element 1. An arithmetic unit omits part of Fp^m operation that is arithmetic operation in the finite field Fp^m based on a fact that an element in the set of n elements (h′0, h′1, . . . , h′n−1) represented by the limited projective representation is a zero element “0” or an identity element “1” when performing Fp^mn operation that is arithmetic operation of a finite field Fp^mn in combination with the Fp^m operation.
摘要翻译：根据一个实施例，表示转换单元将n个元素（h0，h1，...，hn-1）（hi：有限域Fp ^ m，0＆nlE; i＆nlE; n-1的成员）的集合转换为是由一组n个元素表示的有限投影表示的n阶代数环面Tn（Fp ^ m）（n：正整数，p：素数，m：正整数）的成员g的投影表示（h'0，h'1，...，h'n-1）（h'i：有限域Fp ^ m，0＆nlE; i＆nlE; n-1的成员），其中至少一个元素 n个元素是零元素0或身份元素1.算术单元省略了Fp ^ m操作的一部分，这是基于n个元素集合中的元素（h）的事实的有限域Fp ^ m中的算术运算由有限的投影表示表示的'0，h'1，...，h'n-1'是执行Fp ^ mn操作时的零元素“0”或身份元素“1”，这是运算有限的场Fp ^ mn结合 Fp ^ m操作。

2. 发明授权

US08675874B2 Apparatus for performing data compression processing using algebraic torus 失效
标题翻译：用于使用代数环面进行数据压缩处理的装置
公开(公告)号：US08675874B2
公开(公告)日：2014-03-18
申请号：US12406507
申请日：2009-03-18
申请人： Hirofumi Muratani , Tomoko Yonemura , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
发明人： Hirofumi Muratani , Tomoko Yonemura , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
IPC分类号： H04L29/06
CPC分类号： H04L9/3073 , H04L9/3013 , H04L2209/30
摘要： A compressing unit compresses an element on an algebraic torus into affine representation according to a compression map. A determining unit determines whether a target element on the algebraic torus to be compressed is an exceptional point representing an element on the algebraic torus that cannot be compressed by the compression map. The compressing unit generates, when it is determined that the target element is the exceptional point, a processing result including exceptional information indicating that the target element is the exceptional point, and generates, when it is determined that the target element is not the exceptional point, a processing result including affine representation obtained by compressing the target element according to the compression map.
摘要翻译：压缩单元根据压缩图将代数环面上的元素压缩为仿射表示。确定单元确定要压缩的代数环面上的目标元素是否是代表不能由压缩映射压缩的代数环面上的元素的异常点。当确定目标元素是异常点时，压缩单元产生包括指示目标元素是异常点的异常信息的处理结果，并且当确定目标元素不是异常点时，生成，包括通过根据压缩图压缩目标元素获得的仿射表示的处理结果。

3. 发明申请

US20100046743A1 APPARATUS FOR PERFORMING DATA COMPRESSION PROCESSING USING ALGEBRAIC TORUS 失效
标题翻译：用于使用ALGBRAIC TORUS执行数据压缩处理的装置
公开(公告)号：US20100046743A1
公开(公告)日：2010-02-25
申请号：US12406507
申请日：2009-03-18
申请人： Hirofumi Muratani , Tomoko Yonemura , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
发明人： Hirofumi Muratani , Tomoko Yonemura , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
IPC分类号： H04L9/28 , G06F17/30
CPC分类号： H04L9/3073 , H04L9/3013 , H04L2209/30
摘要： A compressing unit compresses an element on an algebraic torus into affine representation according to a compression map. A determining unit determines whether a target element on the algebraic torus to be compressed is an exceptional point representing an element on the algebraic torus that cannot be compressed by the compression map. The compressing unit generates, when it is determined that the target element is the exceptional point, a processing result including exceptional information indicating that the target element is the exceptional point, and generates, when it is determined that the target element is not the exceptional point, a processing result including affine representation obtained by compressing the target element according to the compression map.
摘要翻译：压缩单元根据压缩图将代数环面上的元素压缩为仿射表示。确定单元确定要压缩的代数环面上的目标元素是否是代表不能由压缩映射压缩的代数环面上的元素的异常点。当确定目标元素是异常点时，压缩单元产生包括指示目标元素是异常点的异常信息的处理结果，并且当确定目标元素不是异常点时，生成，包括通过根据压缩图压缩目标元素获得的仿射表示的处理结果。

4. 发明申请

US20080247597A1 DEVICE FOR DETECTING DIGITAL WATERMARK 审中-公开
标题翻译：用于检测数字水印的设备
公开(公告)号：US20080247597A1
公开(公告)日：2008-10-09
申请号：US12061327
申请日：2008-04-02
申请人： Taichi Isogai
发明人： Taichi Isogai
IPC分类号： G06K9/00
CPC分类号： G06T1/0085
摘要： A device includes: a reception unit that receives video image; an extraction unit that extracts the watermark patterns from the video image; a storage unit that stores an accumulated information pieces and a number of accumulation times; a calculation unit that calculates degrees of correlation between the accumulated information pieces and the watermark patterns; an accumulation unit that accumulates the watermark patterns in one of the accumulated information pieces having the degree of correlation that is larger than a threshold value and is the largest among the calculated degrees of correlation; a selection unit that selects a top N-pieces of the accumulated information pieces stored in the storage unit having largest number of the accumulation times, where N is a positive integer; and a watermark value calculation unit that obtains a digital watermark value from the accumulated information pieces selected by the selection unit.
摘要翻译：一种设备包括：接收视频图像的接收单元; 提取单元，从视频图像中提取水印图案; 存储单元，其存储累积的信息块和多个累积时间; 计算单元，其计算累积信息和水印图案之间的相关度; 累积单元，其将所述相关度大于阈值的所述累计信息中的一个积累，并且在所计算的相关度中最大; 选择单元，其选择存储在具有最多累积次数的存储单元中的N个累积信息段，其中N是正整数; 以及水印值计算单元，从由所述选择单元选择的累积信息中获取数字水印值。

5. 发明申请

US20050190948A1 Method of embedding a digital watermark and a digital watermark embedding apparatus 审中-公开
标题翻译：嵌入数字水印的方法和数字水印嵌入装置
公开(公告)号：US20050190948A1
公开(公告)日：2005-09-01
申请号：US11017919
申请日：2004-12-22
申请人： Taichi Isogai
发明人： Taichi Isogai
IPC分类号： G06T1/00 , G06K9/00 , H04N1/32 , H04N1/387 , H04N7/08 , H04N7/081
CPC分类号： G06T1/0028 , G06T1/0071 , G06T2201/0065 , H04N1/32144 , H04N1/32229 , H04N1/32304
摘要： A plurality of areas are specified in an original image in which a digital watermark is to be embedded. The areas are classified into embedding areas in which watermark information is to be embedded and specification areas in which another area is to be specified. A plurality of areas are again specified in the specification areas and these areas are classified as embedding areas. Watermark information is input and each watermark is generated based on the size and shape of the each embedding area, and the digital watermarks are arranged in positions indicated by the embedding areas and embedded into the original image.
摘要翻译：在要嵌入数字水印的原始图像中指定多个区域。这些区域被分类为要嵌入水印信息的嵌入区域和要指定其他区域的指定区域。在规格区域再次指定多个区域，将这些区域分类为嵌入区域。输入水印信息，并根据每个嵌入区域的大小和形状生成每个水印，并将数字水印布置在嵌入区域所指示的位置并嵌入到原始图像中。

6. 发明授权

US08934631B2 Decompressing apparatus and compressing apparatus 有权
标题翻译：解压缩装置和压缩装置
公开(公告)号：US08934631B2
公开(公告)日：2015-01-13
申请号：US13225964
申请日：2011-09-06
申请人： Yoshikazu Hanatani , Taichi Isogai , Hirofumi Muratani , Tomoko Yonemura
发明人： Yoshikazu Hanatani , Taichi Isogai , Hirofumi Muratani , Tomoko Yonemura
IPC分类号： H04K1/00 , H04L9/30 , G09C1/00
CPC分类号： G09C1/00 , G06F17/12 , H04L9/3066 , H04L2209/30
摘要： According to one embodiment, a decompressing apparatus includes an input unit, a calculating unit, a first selecting unit, and a decompressing unit. The input unit inputs additional data, which is obtained based on trace expression data in which an element in a subgroup of a multiplicative group of a finite field is trace-expressed and affine expression data in which the trace expression data is affine-expressed, and the trace expression data. The calculating unit calculates a plurality of solutions of simultaneous equations derived by the trace expression data. The first selecting unit selects any of a plurality of items of affine expression data in which the element is affine-expressed based on the additional data, the affine expression data being found from the solutions. The decompressing unit decompresses the selected affine expression data to the element.
摘要翻译：根据一个实施例，解压缩装置包括输入单元，计算单元，第一选择单元和解压缩单元。输入单元输入基于跟踪表达数据获得的附加数据，其中有限域的乘法组的子组中的元素被跟踪表达，并且其中仿射表达数据被仿射表达的仿射表达式数据;以及跟踪表达式数据。计算单元计算由轨迹表达数据导出的多个联立方程的解。第一选择单元基于附加数据选择多个项目的仿射表达数据中的元素进行仿射表示，从解决方案中找到仿射表达数据。解压缩单元将所选择的仿射表达式数据解压缩到元素。

7. 发明授权

US08438205B2 Exponentiation calculation apparatus and method for calculating square root in finite extension field 有权
公开(公告)号：US08438205B2
公开(公告)日：2013-05-07
申请号：US12393558
申请日：2009-02-26
申请人： Tomoko Yonemura , Hirofumi Muratani , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
发明人： Tomoko Yonemura , Hirofumi Muratani , Atsushi Shimbo , Kenji Ohkuma , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Yoshikazu Hanatani
IPC分类号： G06F17/10 , G06F7/38 , G06F7/52 , G06F7/50 , H04L9/28
CPC分类号： G06F17/10 , G06F7/724
摘要： In a computing device that calculates a square of an element in a finite field, a vector representation of the element in the finite field is accepted. The vector representation includes a plurality of elements. The computing device performs a multiplication operation on a base field using the accepted elements, and obtains a multiplication value. The multiplication operation is determined by a condition under which the element in the finite field is placed in an algebraic torus. The computing device performs an addition and subtraction operation using the obtained multiplication value and the accepted elements, and obtains a calculation result of the square of the element. The addition and subtraction operation is determined by the condition. The computing device then outputs the calculation result.

8. 发明申请

US20120124114A1 ARITHMETIC DEVICE 失效
标题翻译：算术设备
公开(公告)号：US20120124114A1
公开(公告)日：2012-05-17
申请号：US13355642
申请日：2012-01-23
申请人： Tomoko YONEMURA , Taichi ISOGAI , Hirofumi MURATANI , Atsushi SHIMBO , Yoshikazu HANATANI , Kenichiro FURUTA , Kenji OHKUMA , Yuichi KOMANO , Hanae IKEDA
发明人： Tomoko YONEMURA , Taichi ISOGAI , Hirofumi MURATANI , Atsushi SHIMBO , Yoshikazu HANATANI , Kenichiro FURUTA , Kenji OHKUMA , Yuichi KOMANO , Hanae IKEDA
IPC分类号： G06F7/00
CPC分类号： H04L9/3073
摘要： According to one embodiment, a representation converting unit converts a set of n elements (h0, h1, . . . , hn−1) (hi: a member of a finite field Fp̂m, 0≦i≦n−1) that is a projective representation of a member g of an n-th degree algebraic torus Tn(Fp̂m) (n: positive integer, p: prime number, m: positive integer) into a limited projected representation expressed by a set of n elements (h′0, h′1, . . . , h′n−1) (h′i: a member of the finite field Fp̂m, 0≦i≦n−1) in which at least one element out of the n elements is a zero element 0 or an identity element 1. An arithmetic unit omits part of Fp̂m operation that is arithmetic operation in the finite field Fp̂m based on a fact that an element in the set of n elements (h′0, h′1, . . . , h′n−1) represented by the limited projective representation is a zero element “0” or an identity element “1” when performing Fp̂mn operation that is arithmetic operation of a finite field Fp̂mn in combination with the Fp̂m operation.
摘要翻译：根据一个实施例，表示转换单元将一组n个元素（h0，h1，...，hn-1）（hi：有限域Fpm，0＆nlE; i＆nlE; n-1的成员）由n个元素（h'0）表示的有限投影表示中的n次代数圆环Tn（Fpm）（n：正整数，p：素数，m：正整数）的成员g的投影表示，h'1，...，h'n-1）（h'i：有限域Fpm，0＆nlE; i＆nlE; n-1的成员），其中n个元素中的至少一个元素为零元素0或身份元素1.运算单元基于以下事实省略了在有限域Fpm中的算术运算的Fpm运算的一部分：n个元素（h'0，h'1，...，，由有限的投影表示表示的h'n-1是在组合中执行有限域Fpmn的算术运算的Fpmn运算时的零元素“0”或单位元素“1” 随着Fpm操作。

9. 发明申请

US20100046745A1 ENCRYPTING APPARATUS, DECRYPTING APPARATUS, CRYPTOCOMMUNICATION SYSTEM, AND METHODS AND COMPUTER PROGRAM PRODUCTS THEREFOR 审中-公开
标题翻译：加密设备，分解设备，CRYPTOCOMM通信系统及其计算机程序产品
公开(公告)号：US20100046745A1
公开(公告)日：2010-02-25
申请号：US12397668
申请日：2009-03-04
申请人： Yoshikazu Hanatani , Kenji Ohkuma , Atsushi Shimbo , Hirofumi Muratani , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Tomoko Yonemura
发明人： Yoshikazu Hanatani , Kenji Ohkuma , Atsushi Shimbo , Hirofumi Muratani , Taichi Isogai , Yuichi Komano , Kenichiro Furuta , Tomoko Yonemura
IPC分类号： H04L9/06
CPC分类号： H04L9/083 , H04L9/3073 , H04L2209/30
摘要： A decrypting apparatus that decrypts encrypted data that has been encrypted first data containing plain data, the encrypted data being represented by using an affine representation F_{p̂m}×F_{p̂m}̂*(where p: a prime number; m: a natural number; and ̂: exponentiation) obtains encrypted data represented in a vector format and a secret key corresponding to a public key and judges whether a vector component contained in the encrypted data is the affine representation F_{p̂m}×F_{p̂m}̂*. Further, based on the result of the judging process, the decrypting apparatus maps the vector component onto each of the members of an algebraic torus by forming a decompression map and decrypts the encrypted data mapped onto each of the members of the algebraic torus, by using the secret key, therefore obtains the plain data.
摘要翻译：一种解密装置，对已经加密的加密数据进行第一数据的解密，该数据包含普通数据，加密数据使用仿射表示法F_ {pm}×F_ {pm} *（其中p：素数; m：数字;和：取幂）获得以向量格式表示的加密数据和与公钥对应的秘密密钥，并且判断加密数据中包含的向量成分是否为仿射表示F_ {pm}×F_ {pm} * 。此外，基于判断处理的结果，解密装置通过形成解压缩映射将矢量分量映射到代数环面的每个成员上，并且通过使用映射到代数环面的每个成员的加密数据进行解密秘密密钥，因此获得普通数据。

10. 发明授权

US07636451B2 Digital watermark embedding apparatus and method, and digital watermark detection apparatus and method 失效
标题翻译：数字水印嵌入装置及方法，以及数字水印检测装置及方法
公开(公告)号：US07636451B2
公开(公告)日：2009-12-22
申请号：US11469499
申请日：2006-09-01
申请人： Taichi Isogai
发明人： Taichi Isogai
IPC分类号： G06K9/00 , H04L9/32
CPC分类号： G06T1/0085 , G06T2201/0051 , G06T2201/0083
摘要： A digital watermark embedding apparatus includes a watermark providing unit configured to provide a digital watermark, an obtaining unit configured to obtain an image component from a plurality of frames of video contents based on image data of the plurality of frames, the image component affecting an error occurring at a time of detecting an image pattern of the digital watermark, a generating unit configured to generate a first image pattern and a second image pattern in converse relation, using the image pattern of the digital watermark and the image component, and an overlapping unit configured to overlap the first image pattern and the second image pattern the frames on the frames, respectively, to eliminate or reduce the image component.
摘要翻译：数字水印嵌入装置包括水印提供单元，被配置为提供数字水印;获取单元，被配置为基于多个帧的图像数据从多个视频内容帧获得图像分量，图像分量影响误差发生在检测数字水印的图像模式时，生成单元，被配置为使用数字水印和图像分量的图像图案生成相反关系的第一图像图案和第二图像图案，以及重叠单元被配置为分别与帧上的帧重叠第一图像图案和第二图像图案以消除或减少图像分量。

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