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36 条记录 (耗时 0.015 秒)

    Coding system and method
    23.
    发明公开
    Coding system and method 失效
    Kodierungssystem und -verfahren。

    公开(公告)号：EP0603878A2

    公开(公告)日：1994-06-29

    申请号：EP93120766.6

    申请日：1993-12-23

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Murakami, Tokumichi, c/o Mitsubishi Denki K.K. ,  Kato, Yoshiaki, c/o Mitsubishi Denki K.K. ,  Shimada, Toshiaki, c/o Mitsubishi Denki K.K.

    IPC分类号： H04N7/137 ,  H04N7/30 ,  H04N7/36 ,  H04N7/50

    CPC分类号： H04N19/86 ,  H04N19/107 ,  H04N19/112 ,  H04N19/117 ,  H04N19/14 ,  H04N19/146 ,  H04N19/149 ,  H04N19/172 ,  H04N19/503 ,  H04N19/527 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82

    摘要： An interframe coding system which eliminates higher frequency components contained in an image signal effectively and adaptively with an adaptive filter provided in a coding loop. The adaptive filter eliminates the higher frequency components with the optimal filtering intensity for an image signal specified with a filtering coefficient which is decided by a filter controller. The filtering coefficient is decided by normalization of the difference between an input image signal and a predictive signal from a frame memory by the "Activity" of the input image signal or the predictive signal. The "Activity" can be based upon the sum of the absolute or squared difference values based upon the mean value of luminance intensity of pixels of the image signal.

    摘要翻译： 一种帧间编码系统，其利用编码环路中提供的自适应滤波器有效地自适应地消除图像信号中包含的较高频率分量。 自适应滤波器消除了由滤波器控制器决定的滤波系数指定的图像信号的最佳滤波强度的较高频率分量。 通过输入图像信号或预测信号的“活动”将输入图像信号和来自帧存储器的预测信号之间的差异归一化来确定滤波系数。 “活动”可以基于基于图像信号的像素的亮度强度的平均值的绝对值或平方差值的总和。

    Method and apparatus for the motion compensated predictive coding of an image signal
    25.
    发明公开
    Method and apparatus for the motion compensated predictive coding of an image signal 失效
    对于具有运动补偿的图像信号的预测编码方法和装置。

    公开(公告)号：EP0508351A2

    公开(公告)日：1992-10-14

    申请号：EP92105930.9

    申请日：1992-04-06

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Murakami, Tokumichi, c/o Mitsubishi Denki K.K. ,  Asai, Kohtaro, c/o Mitsubishi Denki K.K. ,  Kato, Yoshiaki, c/o Mitsubishi Denki K.K. ,  Yamada, Yoshihisa, c/o Mitsubishi Denki K.K.

    IPC分类号： H04N7/137

    CPC分类号： H04N19/577 ,  H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/51 ,  H04N19/61

    摘要： 7 A motion compensation predicting coding apparatus includes a motion detector for comparing pixel data in an image signal with pixel data of the previous image signal to generate a motion vector. The motion vector is indicative of the displacement differences between the image signal and the previous image signal. The image signal may be organized into blocks of pixel data for a single field or for multiple fields when motion detection is performed on the image signal by the motion detector. A subtracter generates a prediction compensation error signal by subtracting the pixel data in the previous image signal from the pixel data of the image signal. A coder receives the prediction compensation error signal and generates an appropriate coded output. The apparatus may also include an adaptive blocking mechanism for receiving the prediction compensation error signal and organizing the data in the signal into blocks into one of several fashions as dictated by the motion vector.

    摘要翻译： 运动补偿预测编码装置包括用于在图像信号与先前图像信号的像素数据进行比较的像素数据，以产生运动矢量的运动检测器。 的运动矢量指示的图像信号和先前图像信号之间的位移的差异。 的图像信号可以为单个场或用于当运动检测由所述运动检测器的图像信号上执行多个字段被组织成像素数据块。 减法器基因费率通过从图像信号的像素数据之前的图像信号中减去该像素的数据的预测误差信号的补偿。 的编码器接收关于适当的编码输出的预测误差信号的补偿和基因率。 因此，该装置可以包括在自适应阻挡机构，用于接收所述预测误差信号和补偿在信号中的数据组织成块成几个时装之一由运动矢量所指示的。

    Transform coding apparatus
    26.
    发明公开
    Transform coding apparatus 失效
    Transformationskodierungsgerät。

    公开(公告)号：EP0414074A2

    公开(公告)日：1991-02-27

    申请号：EP90115439.3

    申请日：1990-08-11

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Kato, Yoshiaki, c/o Mitsubishi Denki K.K. ,  Murakami, Tokumichi, c/o Mitsubishi Denki K.K.

    IPC分类号： H04N7/30

    CPC分类号： H04N19/18 ,  H04N19/126 ,  H04N19/132 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/154 ,  H04N19/176 ,  H04N19/196

    摘要： This invention relates to a transform coding apparatus where linear transform (21) is performed for input signal series such as image signals, and transform coefficients are quantized (4) from lower frequency compo­nents to higher frequency components in the transform region, and then the quantized transform coefficients are coded and outputted. The quantized transform coefficients being zero are counted, and when the count value exceeds the prescribed threshold value, the quantization is terminated so that high speed in the coding is intended and variation of the code generation rate can be prevented.

    摘要翻译： 本发明涉及对图像信号等输入信号序列进行线性变换的变换编码装置，将变换系数从变换区域的低频分量量化为较高频分量，然后对量化后的变换系数进行编码，输出 。 对量化的变换系数为零进行计数，并且当计数值超过规定的阈值时，终止量化，从而可以防止编码中的高速度，并且可以防止代码生成速率的变化。

    Multimedia information processing system
    27.
    发明公开
    Multimedia information processing system 失效
    系统zur Verarbeitung von Multimedianachrichten

    公开(公告)号：EP0726680A2

    公开(公告)日：1996-08-14

    申请号：EP95110181.5

    申请日：1995-06-29

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Murakami, Tokumichi, c/o Mitsubishi Denki K.K. ,  Matsuzaki, Kazuhiro, c/o Mitsubishi Denki K.K. ,  Kato, Yoshiaki, c/o Mitsubishi Denki K.K. ,  Ohira, Hideo, c/o Mitsubishi Denki K.K.

    IPC分类号： H04N7/52 ,  H04N7/24

    CPC分类号： H04N21/2368 ,  H04N7/52 ,  H04N21/236 ,  H04N21/23614 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/4302 ,  H04N21/434 ,  H04N21/4341 ,  H04N21/4344 ,  H04N21/4348 ,  H04N21/4382 ,  H04N21/64322

    摘要： A multimedia information processing system comprises an information-source coding section for generating an element packet containing coded multimedia information and additional information to specify the packet, a packet multiplexing section for generating multiplexed stream by multiplexing the element packet, and a transmission processing section for outputting the multiplexed stream as a transmission signal corresponding transmission media. In this multimedia information processing system, a processing sequence from selection of multimedia information to transmission or storage processing is classified, and the processing contents and input/output data are determined for each hierarchy. Data exchange between services such as broadcasting, communication, storage in computer and so on can be easily attained. Additionally, hardware structure of this system can be simplified, and additional functions can be easily added.

    摘要翻译： 多媒体信息处理系统包括：信息源编码部分，用于生成包含编码多媒体信息的元素分组和用于指定分组的附加信息;分组多路复用部分，用于通过复用元素分组来产生多路复用流;以及发送处理部分，用于输出 多路复用流作为传输信号对应传输媒体。 在该多媒体信息处理系统中，将从多媒体信息的选择到发送或存储处理的处理顺序分类，并且为每个层次确定处理内容和输入/输出数据。 可以容易地实现广播，通信，计算机存储等服务之间的数据交换。 此外，该系统的硬件结构可以简化，并且可以轻松添加附加功能。

    Coding system and method
    30.
    发明公开
    Coding system and method 失效
    Kodierungssystem und -verfahren。

    公开(公告)号：EP0603878A3

    公开(公告)日：1996-01-24

    申请号：EP93120766.6

    申请日：1993-12-23

    申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Murakami, Tokumichi, c/o Mitsubishi Denki K.K. ,  Kato, Yoshiaki, c/o Mitsubishi Denki K.K. ,  Shimada, Toshiaki, c/o Mitsubishi Denki K.K.

    IPC分类号： H04N7/137 ,  H04N7/30 ,  H04N7/36 ,  H04N7/50

    CPC分类号： H04N19/86 ,  H04N19/107 ,  H04N19/112 ,  H04N19/117 ,  H04N19/14 ,  H04N19/146 ,  H04N19/149 ,  H04N19/172 ,  H04N19/503 ,  H04N19/527 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82

    摘要： An interframe coding system which eliminates higher frequency components contained in an image signal effectively and adaptively with an adaptive filter provided in a coding loop. The adaptive filter eliminates the higher frequency components with the optimal filtering intensity for an image signal specified with a filtering coefficient which is decided by a filter controller. The filtering coefficient is decided by normalization of the difference between an input image signal and a predictive signal from a frame memory by the "Activity" of the input image signal or the predictive signal. The "Activity" can be based upon the sum of the absolute or squared difference values based upon the mean value of luminance intensity of pixels of the image signal.

    摘要翻译： 一种用于输入信号（12）的帧间编码的帧间编码系统，具有包括用于对输入信号进行帧间编码的编码器（4）的局部解码循环，用于产生解码信号（18）的解码装置（5） ）和帧存储器（1），其接收解码信号并输出​​预测信号（14）。 该系统还包括控制器（21a），用于从帧存储器接收输入信号和预测信号，用于计算输入信号和预测信号之间的差值，用于计算输入信号的特性并产生编码控制 信号（25）基于差异和用于控制编码器的特性。