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1. 发明授权

US5719963A Two-dimensional discrete cosine transform computing circuit 失效
标题翻译：二维离散余弦变换计算电路
公开(公告)号：US5719963A
公开(公告)日：1998-02-17
申请号：US454867
申请日：1995-05-31
申请人： Kimihiko Kazui , Kiyoshi Sakai , Kiichi Matsuda , Akira Nakagawa
发明人： Kimihiko Kazui , Kiyoshi Sakai , Kiichi Matsuda , Akira Nakagawa
IPC分类号： H04N7/30 , G06F17/14 , G06T1/20 , G06T9/00 , H03M7/30 , H04N1/41 , G06K9/20 , G06F15/00 , G06K9/38
CPC分类号： G06F17/147 , G06T9/007
摘要： A two-dimensional discrete cosine transform computing circuit has a transform block, formed by a multiplication unit and a Hadamard transform unit, which performs computations in a sequence of Hadamard transforms followed by multiplications in a two-dimensional discrete cosine transform, and in a sequence of multiplication followed by Hadamard transforms in an inverse two-dimensional discrete cosine transform. A memory block temporarily stores input/output data of the transform block; an input/output processing block performs pre-processing and post-processing such as cumulative addition and subtraction of input/output data of the transform block. A control block controls, when performing processing for either a two-dimensional discrete cosine transform or inverse two-dimensional discrete cosine transform, multiplications of coefficients in the transform block, read/write of the memory block, and the input/output processing block. This configuration achieves high-speed processing and a reduction in scale of the circuitry.
摘要翻译：二维离散余弦变换计算电路具有由乘法单元和Hadamard变换单元形成的变换块，该单元在Hadamard变换序列中进行计算，随后在二维离散余弦变换中进行乘法，并以序列的乘法，然后是逆二维离散余弦变换中的Hadamard变换。存储块临时存储变换块的输入/输出数据; 输入/输出处理块执行诸如变换块的输入/输出数据的累积加法和减法的预处理和后处理。当执行二维离散余弦变换或反向二维离散余弦变换的处理时，控制块控制变换块中的系数乘法，存储块的读/写和输入/输出处理块。该配置实现了高速处理和电路规模的缩小。

2. 发明授权

US6104826A Method of watermark-embedding/extracting identification information into/from picture data and apparatus thereof, and computer readable medium 失效
标题翻译：将图像数据中的识别信息进行水印嵌入/提取的方法及其装置以及计算机可读介质
公开(公告)号：US6104826A
公开(公告)日：2000-08-15
申请号：US948083
申请日：1997-10-09
申请人： Akira Nakagawa , Kimihiko Kazui , Atsuko Tada , Eishi Morimatsu , Koich Tanaka
发明人： Akira Nakagawa , Kimihiko Kazui , Atsuko Tada , Eishi Morimatsu , Koich Tanaka
IPC分类号： H04N7/08 , G06T1/00 , H03M7/30 , H04N1/32 , H04N1/387 , H04N7/081 , G06K9/00
CPC分类号： H04N19/467 , G06T1/0028 , H04N1/32154 , H04N1/32165 , H04N21/23892 , H04N21/8358 , G06T2201/0052 , G06T2201/0083 , H04N2201/3233 , H04N2201/327
摘要： The present invention relates to methods for watermark-embedding/extracting identification information into/from picture data and apparatuses thereof. When identification information is watermark-embedded, the following steps are performed. Combinations of basis functions orthogonal each other are generated in association with each numerical signal. For each combination of the orthogonal basis functions, a weight coefficient is calculated so as to correspond to the combination of the basis functions by calculating a sum of products of values of the basis functions for pixels in the original picture data and pixel values of the pixels. For each numerical signal, a watermark-embedding function is referred, a input value is specified, and a pixel value is changed. When the identification information is extracted from the picture data, for each weight coefficient, the watermark-embedding function is referred, and the value of the watermark-embedding function is calculated for each weight coefficient.
摘要翻译：本发明涉及用于将图像数据中的识别信息进行水印嵌入/提取的方法及其装置。当识别信息嵌入水印时，执行以下步骤。与每个数字信号相关联地产生彼此正交的基函数的组合。对于正交基函数的每个组合，通过计算原始图像数据中的像素的基本函数的值和像素的像素的乘积之和来计算权重系数，以便对应于基函数的组合。对于每个数字信号，参考水印嵌入功能，指定输入值，并改变像素值。当从图像数据中提取识别信息时，对于每个权重系数，参照水印嵌入功能，并且针对每个权重系数计算水印嵌入函数的值。

3. 发明授权

US6104434A Video coding apparatus and decoding apparatus 失效
标题翻译：视频编码装置和解码装置
公开(公告)号：US6104434A
公开(公告)日：2000-08-15
申请号：US877508
申请日：1997-06-17
申请人： Akira Nakagawa , Kimihiko Kazui , Eishi Morimatsu , Takahiro Shimizu
发明人： Akira Nakagawa , Kimihiko Kazui , Eishi Morimatsu , Takahiro Shimizu
IPC分类号： H04N19/50 , G06T9/00 , H03M7/30 , H03M7/36 , H04N19/107 , H04N19/117 , H04N19/126 , H04N19/13 , H04N19/136 , H04N19/139 , H04N19/15 , H04N19/152 , H04N19/167 , H04N19/176 , H04N19/196 , H04N19/423 , H04N19/503 , H04N19/51 , H04N19/59 , H04N19/61 , H04N19/625 , H04N19/80 , H04N19/86 , H04N19/91 , H04N7/30
CPC分类号： H04N19/59 , H04N19/105 , H04N19/117 , H04N19/134 , H04N19/139 , H04N19/152 , H04N19/159 , H04N19/176 , H04N19/196 , H04N19/527 , H04N19/61 , H04N19/82 , H04N19/86
摘要： Video coding apparatus and decoding apparatus capable of reproducing decoded pictures without introducing unwanted noises, even if any considerable difference in pixel values or discontinuity exists at a certain block boundary. In a video coding apparatus employing predictive techniques, a dequantizer and an inverse DCT processor reproduce a prediction error signal from quantized transform coefficients. Here, a first resolution conversion unit (or downsampling unit) might have subsampled the original prediction error signal to reduce its picture resolution. If this is the case, a second resolution conversion unit (or upsampling unit) attempts to restore the original resolution of the prediction error signal by applying an upsampling process to the reproduced prediction error signal having the reduced resolution. In this upsampling process, each new pixel value in a certain block are calculated with reference to some surrounding pixels. The upsampling process, however, will not refer to the pixels belonging to any adjacent blocks that are subject to another coding scheme which is different from the coding scheme of the present block of interest. As an alternate arrangement, the upsampling process will entirely neglect the pixels in any other blocks but will refer only to the present block.
摘要翻译：即使在某个块边界处存在像素值或不连续性的任何相当大的差异，也能够再现解码图像而不引入不需要的噪声的视频编码装置和解码装置。在采用预测技术的视频编码装置中，去量化器和逆DCT处理器从量化变换系数再现预测误差信号。这里，第一分辨率转换单元（或下采样单元）可以对原始预测误差信号进行二次采样以降低其图像分辨率。如果是这种情况，则第二分辨率转换单元（或上采样单元）尝试通过对具有降低的分辨率的再现的预测误差信号应用上采样处理来恢复预测误差信号的原始分辨率。在该上采样处理中，参考一些周围像素计算某个块中的每个新像素值。然而，上采样处理将不涉及属于与当前感兴趣块的编码方案不同的另一编码方案的属于任何相邻块的像素。作为替代布置，上采样处理将完全忽略任何其他块中的像素，但将仅引用当前块。

4. 发明授权

US5737256A Inverse discrete cosine transform apparatus 失效
标题翻译：逆离散余弦变换装置
公开(公告)号：US5737256A
公开(公告)日：1998-04-07
申请号：US505857
申请日：1995-07-24
申请人： Akira Nakagawa , Kimihiko Kazui
发明人： Akira Nakagawa , Kimihiko Kazui
IPC分类号： G06F17/14 , G06T1/20 , H03M7/30 , H04N1/41 , H04N19/42 , H04N19/423 , H04N19/60 , H04N19/625
CPC分类号： G06F17/147
摘要： An 8-point inverse discrete cosine transform (IDCT) is decomposed into four 2-point IDCTs. The four 2-point IDCTs are implemented by four parallel-operating product-sum computing circuits. Each product-sum computing circuit comprises a single multiplying means and accomplishes computation of eight points in four clock cycles. Part of the multiplying means may be implemented by bit shift operation, and others by a semifixed multiplier. A two-dimensional 8.times.8 IDCT circuit is constructed which comprises three semifixed multipliers and one ordinary multiplier, and accomplishes IDCT computation of 8.times.8 points in 64 clock cycles.
摘要翻译： 8点逆离散余弦变换（IDCT）被分解成4个2点IDCT。四个2点IDCT由四个并行操作乘积和计算电路实现。每个乘积和计算电路包括单个乘法装置，并且在四个时钟周期内完成八个点的计算。乘法装置的一部分可以通过位移操作来实现，而另一些乘以半固定乘法器。构建了一个二维8x8 IDCT电路，它包括三个半定义乘法器和一个普通乘法器，并且在64个时钟周期内完成8×8点的IDCT计算。

5. 发明申请

US20130044808A1 IMAGE ENCODING DEVICE AND IMAGE DECODING DEVICE 有权
标题翻译：图像编码装置和图像解码装置
公开(公告)号：US20130044808A1
公开(公告)日：2013-02-21
申请号：US13570566
申请日：2012-08-09
申请人： Akira Nakagawa , Kimihiko Kazui , Hidenobu Miyoshi , Junpei Koyama
发明人： Akira Nakagawa , Kimihiko Kazui , Hidenobu Miyoshi , Junpei Koyama
IPC分类号： H04N7/32
CPC分类号： H04N19/167 , H04N19/105 , H04N19/13 , H04N19/182 , H04N19/593
摘要： A encoding device includes a boundary pixel prediction value generation unit, boundary pixel prediction error estimation unit, and a quantized coefficient encoding unit. The boundary pixel prediction value generation unit generates a boundary pixel prediction value as a prediction value of a boundary pixel adjacent to an encoded block in the encoding block from a locally decoded image of a plurality of encoded blocks adjacent to the encoding block. The boundary pixel prediction error estimation unit generates boundary pixel prediction error estimation information from the boundary pixel prediction value and the encoding block prediction image with respect to the boundary pixel. The quantized coefficient encoding unit generates encoding block entropy encoded data from the quantized coefficients and the boundary pixel prediction error estimation information.
摘要翻译：编码装置包括边界像素预测值生成单元，边界像素预测误差估计单元和量化系数编码单元。边界像素预测值生成单元从与编码块相邻的多个编码块的局部解码图像生成边界像素预测值作为与编码块中的编码块相邻的边界像素的预测值。边界像素预测误差估计单元从边界像素预测值和编码块预测图像生成相对于边界像素的边界像素预测误差估计信息。量化系数编码单元从量化系数和边界像素预测误差估计信息生成编码块熵编码数据。

6. 发明申请

US20120320980A1 VIDEO DECODING APPARATUS, VIDEO CODING APPARATUS, VIDEO DECODING METHOD, VIDEO CODING METHOD, AND STORAGE MEDIUM 审中-公开
标题翻译：视频解码设备，视频编码设备，视频解码方法，视频编码方法和存储介质
公开(公告)号：US20120320980A1
公开(公告)日：2012-12-20
申请号：US13472197
申请日：2012-05-15
申请人： Satoshi SHIMADA , Akira Nakagawa , Kimihiko Kazui , Junpei Koyama
发明人： Satoshi SHIMADA , Akira Nakagawa , Kimihiko Kazui , Junpei Koyama
IPC分类号： H04N7/32
CPC分类号： H04N19/577 , H04N19/463 , H04N19/52 , H04N19/573
摘要： A video decoding apparatus includes a motion vector information storing unit configured to store motion vectors of blocks in previously-decoded pictures and a temporally-adjacent vector predictor generating unit. The temporally-adjacent vector predictor generating unit includes a block determining unit configured to determine multiple blocks in a picture that is temporally adjacent to a picture including a target block to be processed, the determined blocks including a block that is closest to first coordinates in the target block; a vector selecting unit configured to obtain motion vectors of the determined blocks from the motion vector information storing unit and select at least one motion vector from the obtained motion vectors; and a generating unit configured to generate a vector predictor candidate, which is used for a decoding process of the target block, based on the selected motion vector.
摘要翻译：视频解码装置包括：运动矢量信息存储单元，被配置为存储先前解码的图像中的块的运动矢量和时间相邻的矢量预测器生成单元。时间相邻矢量预测器生成单元包括：块确定单元，被配置为确定在时间上与包括要处理的目标块的图像相邻的图像中的多个块，所确定的块包括最接近于待处理的目标块的块目标块; 矢量选择单元，被配置为从所述运动矢量信息存储单元获取所确定的块的运动矢量，并从所获得的运动矢量中选择至少一个运动矢量; 以及生成单元，被配置为基于所选择的运动矢量生成用于目标块的解码处理的向量预测器候选。

7. 发明申请

US20090016621A1 MOVING-PICTURE CODING DEVICE AND MOVING-PICTURE CODING METHOD 有权
标题翻译：移动图像编码装置和移动图像编码方法
公开(公告)号：US20090016621A1
公开(公告)日：2009-01-15
申请号：US12171130
申请日：2008-07-10
申请人： Akira Nakagawa , Hidenobu Miyoshi , Kimihiko Kazui , Hisanari Kimura
发明人： Akira Nakagawa , Hidenobu Miyoshi , Kimihiko Kazui , Hisanari Kimura
IPC分类号： G06K9/36
CPC分类号： H04N19/55 , H04N19/105 , H04N19/107 , H04N19/16 , H04N19/17 , H04N19/174 , H04N19/186 , H04N19/523
摘要： A moving-picture coding device that performs inter-field motion compensation prediction, includes a reference limit area determining unit that determines to select, for each reference picture, with respect to reference pictures used for coding, a luminance or chrominance reference limit area putting a limit to a reference picture used for generating a prediction picture of a luminance or chrominance of a coding target block belonging to the coding target picture limit area of the case upon each reference picture being previously coded; a selecting inhibit vector determining unit that determines, in a case of coding the coding block belonging to the coding target picture limit area, a selecting inhibit vector that inhibits selecting a luminance and the chrominance are comprised only of pixels of the luminance reference limit area and the chrominance reference limit area.
摘要翻译：执行场间运动补偿预测的运动图像编码装置包括参考限制区域确定单元，其确定对于每个参考图像，对于用于编码的参考图像，将亮度或色度参考限制区域放入限制为用于生成属于预先对每个参考图像进行编码的情况的编码对象图像限制区域的编码对象块的亮度或色度的预测图像的参考图像; 选择禁止向量确定单元，其在对编码对象图像限制区域的编码块进行编码的情况下，决定禁止选择亮度和色度的选择禁止矢量，仅包含亮度基准极限区域的像素，色度参考极限区域。

8. 发明授权

US07324697B2 Data embedding device and data extraction device 有权
标题翻译：数据嵌入设备和数据提取设备
公开(公告)号：US07324697B2
公开(公告)日：2008-01-29
申请号：US10637587
申请日：2003-08-11
申请人： Kimihiko Kazui , Akira Nakagawa , Eishi Morimatsu
发明人： Kimihiko Kazui , Akira Nakagawa , Eishi Morimatsu
IPC分类号： G06K9/36
CPC分类号： G06T1/0035 , G06T2201/0053
摘要： A data embedding device includes a dynamic image storage unit storing inter-frame prediction coded dynamic image data, an embedding data storage unit storing embedding data that is embedded into the inter-frame prediction coded dynamic image data, and an embedding unit embedding the embedding data into a rounding direction flag contained per frame data in the inter-frame prediction coded dynamic image data.
摘要翻译：数据嵌入装置包括存储帧间预测编码动态图像数据的动态图像存储单元，存储嵌入在帧间预测编码动态图像数据中的嵌入数据的嵌入数据存储单元，嵌入嵌入数据的嵌入单元进入帧间预测编码动态图像数据中每帧数据所包含的舍入方向标志。

9. 发明授权

US09094683B2 Method of coding moving image and method of decoding moving image 有权
标题翻译：编码运动图像的方法和解码运动图像的方法
公开(公告)号：US09094683B2
公开(公告)日：2015-07-28
申请号：US13602415
申请日：2012-09-04
申请人： Junpei Koyama , Akihiro Yamori , Kimihiko Kazui , Satoshi Shimada , Akira Nakagawa
发明人： Junpei Koyama , Akihiro Yamori , Kimihiko Kazui , Satoshi Shimada , Akira Nakagawa
IPC分类号： H04N19/00 , H04N19/16 , H04N19/513 , H04N19/107 , H04N19/112
CPC分类号： H04N19/16 , H04N19/107 , H04N19/112 , H04N19/513
摘要： A method includes extracting a first vector used to code a specific block belonging to a coded field picture arranged chronologically adjacent to a field picture to be coded and to a block to be coded, generating a second vector by scaling the first vector based on a temporal distance between the field picture and a second picture specified by a reference index and referenced for the block and included in the field picture and a temporal distance between a first picture pointed by the first vector and the coded field picture arranged chronologically adjacent to the field picture, and correcting the second vector based on a parity of the field picture, a parity of the first picture, a parity of the second picture and a parity of the coded field picture and forming the corrected second vector.
摘要翻译：一种方法包括提取用于对属于按时间顺序排列的编码场图像编码的第一矢量编码与要编码的场图像相邻的块，并且生成第二矢量，通过基于时间场图像之间的距离和由参考索引指定并被参考并包括在场图像中的第二图像之间的距离以及由第一矢量指向的第一图像与按时间顺序与场图像排列相邻的编码场图像之间的时间距离并且基于场图像的奇偶校验，第一图像的奇偶校验，第二图像的奇偶校验和编码的场图像的奇偶校验来校正第二矢量，并且形成校正的第二矢量。

10. 发明授权

US08306338B2 Moving-picture coding device and moving-picture coding method 有权
标题翻译：运动图像编码装置和运动图像编码方法
公开(公告)号：US08306338B2
公开(公告)日：2012-11-06
申请号：US12171130
申请日：2008-07-10
申请人： Akira Nakagawa , Hidenobu Miyoshi , Kimihiko Kazui , Hisanari Kimura
发明人： Akira Nakagawa , Hidenobu Miyoshi , Kimihiko Kazui , Hisanari Kimura
IPC分类号： G06K9/36
CPC分类号： H04N19/55 , H04N19/105 , H04N19/107 , H04N19/16 , H04N19/17 , H04N19/174 , H04N19/186 , H04N19/523
摘要： A moving-picture coding device that performs inter-field motion compensation prediction, includes a reference limit area determining unit that determines to select, for each reference picture, with respect to reference pictures used for coding, a luminance or chrominance reference limit area putting a limit to a reference picture used for generating a prediction picture of a luminance or chrominance of a coding target block belonging to the coding target picture limit area of the case upon each reference picture being previously coded; a selecting inhibit vector determining unit that determines, in a case of coding the coding block belonging to the coding target picture limit area, a selecting inhibit vector that inhibits selecting a luminance and the chrominance are comprised only of pixels of the luminance reference limit area and the chrominance reference limit area.
摘要翻译：执行场间运动补偿预测的运动图像编码装置包括参考限制区域确定单元，其确定对于每个参考图像，对于用于编码的参考图像，将亮度或色度参考限制区域放入限制为用于生成属于预先对每个参考图像进行编码的情况的编码对象图像限制区域的编码对象块的亮度或色度的预测图像的参考图像; 选择禁止向量确定单元，其在对编码对象图像限制区域的编码块进行编码的情况下，决定禁止选择亮度和色度的选择禁止矢量，仅包含亮度基准极限区域的像素，色度参考极限区域。

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