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公开(公告)号：US06804457B1
公开(公告)日：2004-10-12
申请号：US09719044
申请日：2000-12-07
IPC分类号： H04N726
CPC分类号： H04N9/8047 , H04N9/8042 , H04N19/112 , H04N19/40 , H04N19/436 , H04N19/48
摘要： When recording/reproducing a digital video signal having 1080 effective lines, an MPEG stream can be extracted on the reproducing side with a simple structure and without causing serious deterioration of the image quality, and without wastefully consuming the capacity of the recording medium. To achieve this object, a macro block assembling circuit (semi-MPEG) 20 in the compression circuit 10 assembles macro blocks having 16 lines and macro blocks having 8 lines from the digital video signal. A DCT circuit (MPEG) 22 applies field DCT or frame DCT defined by the MPEG standard to the macro blocks with 16 lines and applies only the frame DCT defined by the MPEG standard to the macro blocks with 8 lines.
摘要翻译： 当记录/再现具有1080条有效行的数字视频信号时，可以以简单的结构在再现侧提取MPEG流，并且不会导致图像质量的严重劣化，并且不会浪费记录介质的容量。 为了实现该目的，压缩电路10中的宏块组合电路（半MPEG）20组合具有16行的宏块和来自数字视频信号的具有8行的宏块。 DCT电路（MPEG）22将由MPEG标准定义的场DCT或帧DCT应用于具有16行的宏块，并且仅将由MPEG标准定义的帧DCT仅应用于具有8行的宏块。
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2.发明授权Shuffling device, coding device, decoding device of video signal and medium recording the programs of shuffling, coding and decoding 失效改组装置，编码装置，视频信号解码装置和媒体记录洗牌，编码和解码程序公开(公告)号：US06847685B1
公开(公告)日：2005-01-25
申请号：US09589800
申请日：2000-06-08
申请人： Yuji Fujiwara , Masakazu Nishino , Mitsuhiro Miyashita , Kazuhiro Wake , Seiichi Takeuchi , Keishi Okamoto
发明人： Yuji Fujiwara , Masakazu Nishino , Mitsuhiro Miyashita , Kazuhiro Wake , Seiichi Takeuchi , Keishi Okamoto
CPC分类号： H04N19/33 , H04N19/124 , H04N19/139 , H04N19/15 , H04N19/172 , H04N19/176 , H04N19/186 , H04N19/44 , H04N19/61
摘要： A video signal shuffling device forms a segment with blocks having a given offset value in horizontal and vertical directions from a given starting point uniquely determined on the screen, the offset value being identical in every region. The segment is formed in a unit of one frame or two frames. The shuffling device divides one frame comprising blocks into a plurality of regions. A coding device determines a final priority as well as a final quantizer thereby quantizing a segment and providing the segment with a variable-length-coding based on a first priority, coding-quantity obtained from a plurality of quantizers, second priority and a quantizer. A coding device and its decoder, the coding device carries out a hierarchical coding by only a motion vector in a compressed stream at a lower resolution side and by agreeing a motion detected and a DCT block size with a size on the screen.
摘要翻译： 视频信号混洗装置从在屏幕上唯一确定的给定起始点在水平和垂直方向上形成具有给定偏移值的块的段，每个区域的偏移值相同。 该段以一帧或两帧的单位形成。 洗牌装置将包括块的一个帧分成多个区域。 编码装置确定最终优先级以及最终量化器，从而量化段，并且基于从多个量化器获得的第一优先级，第二优先级和量化器获得的编码量，为段提供可变长度编码。 一种编码装置及其解码器，编码装置仅通过较低分辨率侧的压缩流中的运动矢量进行分层编码，并使检测到的运动和DCT块尺寸与屏幕上的尺寸一致。
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公开(公告)号：US06859560B2
公开(公告)日：2005-02-22
申请号：US09811661
申请日：2001-03-19
CPC分类号： H04N19/184 , H04N19/115 , H04N19/176 , H04N19/186 , H04N19/37 , H04N19/60
摘要： An image signal encoding device has at least encoding means of dividing a luminescence signal and color-difference signals of image signals into macro blocks having a plurality of sub macro blocks and encoding data of the macro blocks with use of any one of a plurality of compression modes of which compression rate is different each other, wherein the total numbers of sub macro blocks in the each macro block are the same for the use of the all kinds of compression modes.
摘要翻译： 图像信号编码装置至少具有将发光信号和图像信号的色差信号分割成具有多个子宏块的宏块和使用多个压缩中的任何一个来编码宏块的数据的编码装置 压缩率彼此不同的模式，其中，对于使用各种压缩模式，每个宏块中的子宏块的总数相同。
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4.发明授权Signal recording apparatus and method, signal reproducing apparatus and method, medium, and information assembly 失效信号记录装置和方法，信号再现装置和方法，介质和信息组装公开(公告)号：US07190884B2
公开(公告)日：2007-03-13
申请号：US09811682
申请日：2001-03-19
IPC分类号： H04N5/917
CPC分类号： H04N19/40 , H04N19/126 , H04N19/48 , H04N19/60
摘要： A signal recording apparatus includes a quantizer for quantizing a signal employing a quantization step. The apparatus further includes a quantization information creator for creating plural pieces of quantization information to specify the quantization step, an encoder for generating an encoded signal from the quantized signal, and a recorder for recording a compressed signal having data containing the plural pieces of quantization information and the encoded signal.
摘要翻译： 信号记录装置包括用于量化采用量化步长的信号的量化器。 该装置还包括用于产生多个量化信息以指定量化步长的量化信息创建器，用于从量化信号产生编码信号的编码器和用于记录具有包含多个量化信息的数据的压缩信号的记录器 和编码信号。
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5.发明授权ECL in a recording and reproduction device in which coefficient groups including coefficient data corresponding to low frequency components of the first axis in at least two overlapped coding blocks are not recorded by the same recording head 失效记录和再现装置中的误差校正，其中包括对应于至少两个重叠编码块中的第一轴的低频分量的系数数据的系数组不被同一记录头记录公开(公告)号：US06289173B1
公开(公告)日：2001-09-11
申请号：US09101832
申请日：1998-07-17
IPC分类号： H04N726
CPC分类号： H04N19/60 , G06T9/007 , G11B20/00007 , G11B20/10 , G11B20/18 , H04N5/78263 , H04N5/9264 , H04N9/7973 , H04N19/89 , H04N19/895
摘要： In a recording and reproducing apparatus with image coding for compression coding of digital video signals and for recording and reproducing the compressed code, digital video signals are divided on a screen into coding blocks which are overlapped so as to share boundary pixels. DCT coefficient data in each coding block are divided into a plurality of groups, and coefficient data in two coding blocks overlapping on the screen are recorded to separate regions on a recording medium. When an error has occurred during a reproducing process, the state of the error occurrence is analyzed and an error correction responsive to the state of error occurrence is performed on coefficient data that has been lost due to the error. Thus, a stable, successful reproduced image can be obtained even if an error occurs during the recording and reproducing process.
摘要翻译： 在具有用于数字视频信号的压缩编码的图像编码并用于记录和再现压缩代码的图像编码的记录和再现装置中，数字视频信号在屏幕上划分为重叠以便共享边界像素的编码块。 每个编码块中的DCT系数数据被划分为多个组，并且在屏幕上重叠的两个编码块中的系数数据被记录在记录介质上的分离区域。 当在再现处理期间发生错误时，分析错误发生的状态，并且响应于错误发生状态的错误校正对由于错误而丢失的系数数据执行。 因此，即使在记录和再现处理期间发生错误，也可以获得稳定的成功的再现图像。
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公开(公告)号：US5966470A
公开(公告)日：1999-10-12
申请号：US968094
申请日：1997-11-12
CPC分类号： G06T9/007
摘要： A coding apparatus for image compression which includes a transformer that transforms image data into a plurality of transform coefficients arranged in a matrix; a quantizer that quantizes each of the transform coefficients into a coefficient data of a predetermined number of bits; a data divider that divides the coefficient data into a fixed-length data part and a variable-length data part and a variable-length encoder that encodes the variable-length data part into a variable-length code.
摘要翻译： 一种用于图像压缩的编码装置，包括将图像数据变换为矩阵排列的多个变换系数的变换器; 量化器，其将每个变换系数量化为预定位数的系数数据; 将系数数据分割为固定长度数据部分和可变长度数据部分的数据分割器以及将可变长度数据部分编码为可变长度代码的可变长度编码器。
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7.发明授权Video image coding and recording apparatus and video image coding, recording and reproducing apparatus 失效视频图像编码和记录装置和视频图像编码，记录和再现装置
公开(公告)号：US5933571A
公开(公告)日：1999-08-03
申请号：US426248
申请日：1995-04-21
IPC分类号： H04N5/92 , G11B20/12 , H03M7/30 , H03M7/40 , H03M13/00 , H04N5/7826 , H04N5/926 , H04N19/102 , H04N19/134 , H04N19/136 , H04N19/18 , H04N19/196 , H04N19/423 , H04N19/59 , H04N19/60 , H04N19/625 , H04N19/65 , H04N19/67 , H04N19/85 , H04N19/88 , H04N19/89 , H04N19/895 , H04N19/91 , H04N5/917 , H04N7/26
CPC分类号： H04N5/9264 , H04N19/85 , H04N19/88 , H04N5/78263
摘要： Coefficient data in two coding blocks which overlap on a video screen are recorded in distant regions on a recording medium, the distant regions not being directly adjacent to one another. Error detected coefficient data during reproduction are corrected with reference to the feature that the overlapped pixels between the two coding blocks are equal.
摘要翻译： 在视频屏幕上重叠的两个编码块中的系数数据被记录在记录介质上的远侧区域中，远处的区域彼此不直接相邻。 参照两个编码块之间的重叠像素相等的特征校正再现期间检测到的误差系数数据。
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8.发明授权Apparatus for compression-coding image data and method of the same based on quantification and frequency transform coefficient amplitude reduction 失效用于对图像数据进行压缩编码的装置及其基于量化和频率变换系数幅度减小的方法
公开(公告)号：US5754696A
公开(公告)日：1998-05-19
申请号：US356883
申请日：1994-12-15
IPC分类号： G06T9/00 , H03M7/40 , H04N1/41 , H04N19/60 , H04N19/625 , H04N19/63 , H04N19/85 , H04N19/91 , H04N19/93 , G06K9/36 , G06K9/46 , H04N7/12
CPC分类号： H04N19/103 , H04N19/14 , H04N19/149 , H04N19/176 , H04N19/18 , H04N19/184
摘要： An image compression-coding device includes a level conversion circuit for adaptively reducing the amplitude of the quantification coefficient data based on statistical characteristics of the quantification coefficient data. The device further includes a selection circuit for selectively outputting either the quantification coefficient data after the level conversion or the quantification coefficient data before the level conversion, so that the image compression-coding device outputs a smaller amount of variable-length codes.
摘要翻译： 图像压缩编码装置包括：电平转换电路，用于根据量化系数数据的统计特性自适应地减小量化系数数据的幅度。 该装置还包括用于选择性地输出电平转换之后的量化系数数据或电平转换之前的量化系数数据的选择电路，使得图像压缩编码装置输出较小量的可变长度码。
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