公开(公告)号：US5572710A

公开(公告)日：1996-11-05

申请号：US120220

申请日：1993-09-13

申请人： Shigehiro Asano ,  Shouzou Isobe ,  Jiro Amemiya ,  Hirofumi Muratani

发明人： Shigehiro Asano ,  Shouzou Isobe ,  Jiro Amemiya ,  Hirofumi Muratani

IPC分类号： G06F17/50 ,  G06F17/00 ,  G06F9/455

CPC分类号： G06F17/5027 ,  G06F17/5022 ,  Y10S706/92 ,  Y10S706/921

摘要： A logic simulation system capable of handling a very large scale circuit while realizing a high speed simulation by retaining the parallelism of the simulation targets. The system includes: a host computer having data of the simulation target divided into a plurality of sections defining different simulation phases to be executed sequentially in time division; an emulator for emulating the simulation target, including: a plurality of programmable emulation chips for mapping the simulation target, each emulation chip having a memory with a plurality of memory banks provided in correspondence to the plurality of sections for registering mapping data specifying a function to be realized by each emulation chip in emulating each of the plurality of sections; a programmable network for interconnecting the plurality of emulation chips; and an emulation control unit for controlling the plurality of emulation chips and the network by sequentially switching the memory banks of the memory of each emulation chip and changing connections among the plurality of emulation chips provided by the network in emulating each of the plurality of sections; and an interface unit for interfacing the host computer and the emulator.

摘要翻译： 一种逻辑仿真系统，能够通过保持模拟目标的并行性实现高速仿真，处理大规模电路。 该系统包括：具有模拟目标的数据的主计算机，被划分为定义不同模拟阶段的多个部分，以便按时间顺序执行; 用于仿真所述模拟目标的仿真器，包括：用于映射所述模拟目标的多个可编程仿真芯片，每个仿真芯片具有存储器，所述存储器具有与所述多个部分对应地设置的多个存储体，用于将指定功能的映射数据注册到 每个仿真芯片在模拟多个部分中的每个部分时实现; 用于互连所述多个仿真芯片的可编程网络; 以及仿真控制单元，用于通过顺序地切换每个仿真芯片的存储器的存储器并且改变由所述网络提供的所述多个仿真芯片中的模拟所述多个部分中的每一个的连接，来控制所述多个仿真芯片和所述网络; 以及用于连接主计算机和仿真器的接口单元。

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。

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。

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。

公开(公告)号：US07624273B2

公开(公告)日：2009-11-24

申请号：US10752683

申请日：2004-01-08

申请人： Hirofumi Muratani

发明人： Hirofumi Muratani

IPC分类号： H04L9/00

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

摘要： 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.

摘要翻译： 相对于用户ID，残差计算部分别分别获得以多个整数为模数的残差。 多个整数被存储在模数存储部分中并且彼此相互叠加。 基于存储在编码参数存储部中的这些残留和参数，分量代码生成部分分别生成以预定位数为单位的由1和0的连续序列构成的分量代码。 这些分量代码由级联部分连接，从而获得嵌入的代码，其构建水印信息。

公开(公告)号：US07099493B2

公开(公告)日：2006-08-29

申请号：US11236654

申请日：2005-09-28

申请人： Hirofumi Muratani

发明人： Hirofumi Muratani

IPC分类号： G06K9/00

CPC分类号： H04N1/00005 ,  H04N1/00002 ,  H04N1/00037

摘要： A digital watermark detecting device comprises a sequence generator which generates a predetermined sequence of numbers corresponding to a watermark which is to be detected, a shift circuit which shifts the digital content in unit of a predetermined part of data in predetermined directions, and obtain a predetermined number of shifted contents, a correlation calculator which divides the digital content and the shifted contents into blocks, arranges predetermined data obtained from the blocks of the contents to form sequences of numbers for each of the digital content and the shifted contents, and calculates correlations between the predetermined sequence of numbers and the sequences of numbers, and a determination unit which determines whether the predetermined sequence of numbers exists in the digital content based on the correlations.

公开(公告)号：US07082537B2

公开(公告)日：2006-07-25

申请号：US10752665

申请日：2004-01-08

申请人： Hirofumi Muratani

发明人： Hirofumi Muratani

IPC分类号： H04L9/00

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

摘要： 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：US06952486B2

公开(公告)日：2005-10-04

申请号：US10815868

申请日：2004-04-02

申请人： Tomoo Yamakage ,  Hirofumi Muratani ,  Hisashi Yamada ,  Toru Kambayashi ,  Shinichiro Koto

发明人： Tomoo Yamakage ,  Hirofumi Muratani ,  Hisashi Yamada ,  Toru Kambayashi ,  Shinichiro Koto

IPC分类号： G06T1/00 ,  H04N1/32 ,  H04N1/387 ,  H04N5/913 ,  H04N7/025 ,  H04N7/035 ,  H04N7/08 ,  H04N7/081 ,  H04K1/00

CPC分类号： H04N7/08 ,  G06T1/005 ,  G06T1/0064 ,  G06T2201/0052 ,  G06T2201/0065 ,  G06T2201/0083 ,  H04N1/32149 ,  H04N1/32154 ,  H04N1/32165 ,  H04N1/32187 ,  H04N1/32203 ,  H04N1/32229 ,  H04N5/913 ,  H04N7/025 ,  H04N7/035 ,  H04N2005/91335 ,  H04N2201/3233 ,  H04N2201/327

摘要： A specific frequency extraction unit extracts a specific frequency component signal from an input image signal, a phase controller and amplitude controller control at least one of the phase and amplitude of the specific frequency component signal in accordance with watermark information, and a watermark information superposition unit superposes the specific frequency component signal on the input image signal to generate an image signal embedded with the watermark information.

摘要翻译： 特定频率提取单元从输入图像信号中提取特定频率分量信号，相位控制器和幅度控制器根据水印信息来控制特定频率分量信号的相位和幅度中的至少一个，以及水印信息叠加单元 将特定频率分量信号叠加在输入图像信号上以产生嵌入水印信息的图像信号。

公开(公告)号：US06804375B2

公开(公告)日：2004-10-12

申请号：US09891298

申请日：2001-06-27

申请人： Hirofumi Muratani

发明人： Hirofumi Muratani

IPC分类号： G06K900

CPC分类号： G06T1/0028 ,  G06K9/6203 ,  G06T1/0057 ,  G06T1/0064 ,  G06T2201/0051 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0081 ,  G06T2201/0083

摘要： Electronic watermarks in digital documents can be detected, even if the content of the digital documents has been subjected to distortion or other attempts to hide or destroy the watermarks. A method involves inputting the distorted image and comparison information, the comparison information including at least one of the original image or information used for embedding the electronic watermark; dividing a domain of the original image into a plurality of patches, based on the comparison information; inputting affine parameters of a predetermined patch from among the patches in the original image; extracting a patch candidate from the distorted image; using a predetermined electronic watermark detection method, judging whether the patch candidate in the distorted image adequately correlates with a neighboring patch in the original image; when the judging indicates an adequate correlation, outputting a part of the electronic watermark.

摘要翻译： 即使数字文档的内容遭受失真或其他尝试隐藏或破坏水印，也可以检测数字文档中的电子水印。 一种方法包括输入失真图像和比较信息，比较信息包括用于嵌入电子水印的原始图像或信息中的至少一个; 基于比较信息将原始图像的域划分成多个补丁; 从原始图像中的斑块中输入预定贴片的仿射参数; 从失真的图像中提取补丁候选; 使用预定的电子水印检测方法，判断失真图像中的补片候选是否与原始图像中的相邻补丁充分相关; 当判断指示足够的相关性时，输出电子水印的一部分。

公开(公告)号：US06768807B1

公开(公告)日：2004-07-27

申请号：US09533767

申请日：2000-03-23

申请人： Hirofumi Muratani

发明人： Hirofumi Muratani

IPC分类号： G06K900

CPC分类号： G06T1/0057 ,  G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0061 ,  G06T2201/0202

摘要： A digital watermark embedding device by which digital data is assumed to be an embedding target and the digital watermark is embedded, has spread spectrum section to set the embedding target to be a unit spreading block which performs the spread spectrum of the spreading block in which the embedding target includes more than two adjacent basic unit of each bases which constructs the plurality of basic units, multiplies the same pseudo-random number signal is multiplied to the embedding target more than two the basic units in the unit spreading block, and perform the spread spectrum of the embedding target, and watermark embedding section to embed the digital watermark in the embedding target to which the spread spectrum is performed by the spread spectrum section.

摘要翻译： 假定数字数据为嵌入目标并嵌入数字水印的数字水印嵌入装置具有扩展频谱部分，以将嵌入目标设置为执行扩展块扩频的单位扩展块，其中， 嵌入目标包括构成多个基本单位的每个基站的两个以上的相邻基本单元，将相同的伪随机数信号乘以多于两个基本单位的嵌入目标，并执行扩展 嵌入目标的频谱以及水印嵌入部分，用于将数字水印嵌入由扩展频谱部分进行扩展频谱的嵌入目标。