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1. 发明授权

US6091774A Code-amount control device and video coding device including the code-amount control device 失效
标题翻译：码量控制装置和包括码量控制装置的视频编码装置
公开(公告)号：US6091774A
公开(公告)日：2000-07-18
申请号：US30205
申请日：1998-02-25
申请人： Masaaki Hyodo , Yoichi Fujiwara , Tadao Matsuura
发明人： Masaaki Hyodo , Yoichi Fujiwara , Tadao Matsuura
IPC分类号： G06T9/00 , H03M7/40 , H04N19/115 , H04N19/132 , H04N19/134 , H04N19/146 , H04N19/149 , H04N19/176 , H04N19/196 , H04N19/42 , H04N19/423 , H04N19/426 , H04N19/503 , H04N19/51 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/91 , H04N7/30
CPC分类号： H04N19/192 , H04N19/115 , H04N19/124 , H04N19/149 , H04N19/176 , H04N19/60 , H04N19/61 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/91
摘要： The invention is directed to provide a code-amount control device for use in video-coding device, which controls the generated code-amount of each block (block length) after variable-length coding in the video-coding process to surely be less than the designated target code-amount. The code amount control device is provided with a rate control circuit for setting a target code-amount of each of blocks to be encoded, a rounding circuit for converting a sequence of quantized values into a set of the number of continuous zeroes and following thereto non-zero quantized values and a code-length table containing variable code-length values to be allocated to respective sets of the number of continuous zeroes and non-zero values. Before variable-length encoding of the image block, the rounding circuit estimates by accumulating the code length of each block with reference to the code-length table and outputs the quantized values as they are to a variable-length coding circuit when the accumulated code-length does not exceed the target code-amount. If the estimated code-length exceeds the target code-amount, the rounding circuit outputs the quantized values after rounding off the excessive portion thereof.
摘要翻译：本发明旨在提供一种在视频编码装置中使用的码量控制装置，其在视频编码处理中控制可变长度编码之后的每个块（块长度）的生成码量肯定小于指定的目标代码量。代码量控制装置设置有用于设置要编码的每个块的目标代码量的速率控制电路，用于将量化值序列转换为连续零个数的集合的舍入电路， - 零量化值和包含可分配给连续零和非零值的相应组的可变代码长度值的代码长度表。在图像块的可变长度编码之前，舍入电路通过参考码长表累积每个块的码长来估计，并且当累加码字编码电路时将量化值原样输出到可变长度编码电路，长度不超过目标代码量。如果估计码长超过目标码量，则舍入电路在舍入其过多部分之后输出量化值。

2. 发明授权

US06343100B1 Motion-vector detecting device 失效
标题翻译：运动矢量检测装置
公开(公告)号：US06343100B1
公开(公告)日：2002-01-29
申请号：US09085001
申请日：1998-05-28
申请人： Yoichi Fujiwara , Tadao Matsuura , Hiroshi Kusao
发明人： Yoichi Fujiwara , Tadao Matsuura , Hiroshi Kusao
IPC分类号： H04B166
CPC分类号： H04N19/105 , H04N19/112 , H04N19/137 , H04N19/51
摘要： In a motion-vector detecting device for detecting motion-vectors of images processed through a two-dimensional filter by a subsampling method, a filter circuit must process pixel values at a block boundary by delaying the pixel value in both horizontal and vertical directions, which complicates reading pixel data from memory and increases the size of the filter circuit. The present invention provides a motion-vector detecting device for detecting motion-vectors by searching a match of a coding block of a coding image with a prediction candidate-block in a searching area of a reference image. The invention further applies a one-dimensional filter for a coding block and a prediction candidate-block in a horizontal direction to restrict frequency bands of the blocks, and calculates a matching error-value between a part of the pixels in the band-limited coding block and a part of the pixels in the band-limited prediction block to detect a motion-vector, in calculating error-values for a group of pixels by the motion-vector detecting circuit, block-end pixels are considered to exist inside the block boundary by the number of pixels rounded off after a decimal point corresponding to one half of the number of taps of the spatial filters.
摘要翻译：在通过二次采样方法检测通过二维滤波器处理的图像的运动矢量的运动矢量检测装置中，滤波器电路必须通过延迟水平和垂直方向上的像素值来处理块边界处的像素值，使从存储器读取像素数据复杂化并增加滤波器电路的尺寸。本发明提供一种运动矢量检测装置，用于通过在参考图像的搜索区域中搜索编码图像的编码块与预测候选块的匹配来检测运动矢量。本发明还在水平方向上应用编码块和预测候选块的一维滤波器以限制块的频带，并且计算频带限制编码中的一部分像素之间的匹配误差值块和一部分像素在频带限制预测块中检测运动矢量，在运动矢量检测电路计算一组像素的误差值时，块结束像素被认为存在于块内边界乘以对应于空间滤波器抽头数的一半的小数点后四舍五入的像素数。

3. 发明授权

US6052417A Motion image coding apparatus adaptively controlling reference frame interval 失效
标题翻译：运动图像编码装置自适应地控制参考帧间隔
公开(公告)号：US6052417A
公开(公告)日：2000-04-18
申请号：US63895
申请日：1998-04-22
申请人： Yoichi Fujiwara , Tadao Matsuura , Hiroshi Kusao
发明人： Yoichi Fujiwara , Tadao Matsuura , Hiroshi Kusao
IPC分类号： H04N19/50 , G06T9/00 , H03M7/36 , H04N19/114 , H04N19/134 , H04N19/136 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/42 , H04N19/423 , H04N19/503 , H04N19/51 , H04N19/577 , H04N19/85 , H04N7/32
CPC分类号： H04N19/177 , H04N19/107 , H04N19/114 , H04N19/503 , H04N19/61
摘要： A motion image coding apparatus providing enhanced image quality as compared with the prior art includes a coding unit for coding first, second and third frames, a prediction efficiency calculating circuit for calculating prediction efficiency in inter-frame prediction, in coding by the coding unit using said first or second frame as a reference frame, and a reference frame interval determining circuit for determining a reference frame interval which is a time interval between the first and second frames, time interval between the second frames and time interval between the first frames.
摘要翻译：与现有技术相比，提供增强图像质量的运动图像编码装置包括：编码第一，第二和第三帧的编码单元，用于在帧间预测中计算预测效率的预测效率计算电路，编码单元使用所述第一帧或第二帧作为参考帧，以及参考帧间隔确定电路，用于确定作为第一帧和第二帧之间的时间间隔的参考帧间隔，第二帧之间的时间间隔和第一帧之间的时间间隔。

4. 发明授权

US06356590B1 Motion vector detecting device 失效
标题翻译：运动矢量检测装置
公开(公告)号：US06356590B1
公开(公告)日：2002-03-12
申请号：US09165151
申请日：1998-10-02
申请人： Tadao Matsuura , Yoichi Fujiwara
发明人： Tadao Matsuura , Yoichi Fujiwara
IPC分类号： H04N712
CPC分类号： H04N19/51
摘要： An apparatus is provided to reduce the memory capacity required to hold the data of a search area when motion vector detection is conducted in a wider area by using a plurality of motion vector detecting circuits. A motion vector detecting device includes an object pixel memory, reference pixel memory, motion vector detecting circuits, and a vector selecting circuit. Data of different blocks are provided to each of motion vector detecting circuits from the object pixel memory. Data of common search areas are simultaneously provided to the motion vector detecting circuits from the reference pixel memory. Output from each of the motion vector detecting circuits is processed by the vector selecting circuit to provide a motion vector in a search area which is wider than the search area of each motion vector.
摘要翻译：提供了一种装置，用于通过使用多个运动矢量检测电路来在较宽区域中进行运动矢量检测时，减少保持搜索区域的数据所需的存储容量。运动矢量检测装置包括对象像素存储器，参考像素存储器，运动矢量检测电路和矢量选择电路。从对象像素存储器向每个运动矢量检测电路提供不同块的数据。公共搜索区域的数据从参考像素存储器同时提供给运动矢量检测电路。来自每个运动矢量检测电路的输出由矢量选择电路处理，以在比每个运动矢量的搜索区域宽的搜索区域中提供运动矢量。

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