公开(公告)号：US4805017A

公开(公告)日：1989-02-14

申请号：US21909

申请日：1987-03-04

申请人： Masahide Kaneko ,  Kiichi Matsuda ,  Naoki Mukawa ,  Toshio Koga

发明人： Masahide Kaneko ,  Kiichi Matsuda ,  Naoki Mukawa ,  Toshio Koga

IPC分类号： H04N19/50 ,  G06T9/00 ,  H04N7/18 ,  H04N7/12

CPC分类号： H04N19/61 ,  H04N19/503 ,  H04N19/30

摘要： A motion compensation difference interframe or intra-frame coding system includes a block data redundancy compression and coding unit, a PIXEL data coding unit and a prediction data generator unit. The block data redundancy compression and coding unit codes a motion compensated (MC) difference between an input image in a block and a motion predicted image from the prediction data generator unit, and transmits coded data to a receiver. The PIXEL data coding unit receives an error between the MC difference and a decoded MC difference from the block data redundancy compression and coding unit, rearranges the error in PIXEL data and codes the PIXEL error, when the error is greater than a predetermined value. The PIXEL coded data is also transmitted to the receiver. The prediction data generator unit generates predicted block data of the motion of the image. The redundancy compression and coding unit may include a filter circuit rejecting pulse components contained in the MC difference.

摘要翻译： 运动补偿差分帧间或帧内编码系统包括块数据冗余压缩编码单元，PIXEL数据编码单元和预测数据生成单元。 块数据冗余压缩和编码单元对来自预测数据发生器单元的块中的输入图像和运动预测图像之间的运动补偿（MC）差进行编码，并将编码数据发送到接收器。 PIXEL数据编码单元从块数据冗余压缩和编码单元接收MC差异和解码的MC差异之间的错误，重新排列PIXEL数据中的错误，并在错误大于预定值时对PIXEL错误进行编码。 PIXEL编码数据也被发送到接收机。 预测数据生成部生成图像的运动的预测块数据。 冗余压缩编码单元可以包括拒绝包含在MC差异中的脉冲分量的滤波器电路。

公开(公告)号：US4727421A

公开(公告)日：1988-02-23

申请号：US783198

申请日：1985-10-02

申请人： Toshio Koga

发明人： Toshio Koga

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/36 ,  H04N7/12 ,  H04N1/419 ,  H04N7/18

CPC分类号： H04N19/51 ,  H04N19/30

摘要： A code conversion system for picture signals, e.g., television signals. In accordance with this system, an operation is made to select a coding parameter by using N scanning lines of the picture signal as a unit so as to encode the picture signal by using the coding parameter. When coding operations with respect to the picture signal carried out every N scanning lines are repeated in succession to provide the same coding result, an operation is made to encode a repetition number of the coding operations, thus providing a code conversion system suitable for a low transmission bit rate of picture signals. Particularly, this system is greatly practicable when applied to a predictive coding system.

摘要翻译： 用于图像信号的代码转换系统，例如电视信号。 根据该系统，通过使用图像信号的N条扫描线作为单位来进行选择编码参数的操作，以便通过使用编码参数对图像信号进行编码。 当针对每N个扫描行执行的图像信号的编码操作被连续地重复以提供相同的编码结果时，进行编码编码操作的重复次数的操作，从而提供适合于低的编码转换系统 图像信号的传输比特率。 特别地，当应用于预测编码系统时，该系统非常实用。

公开(公告)号：US4460923A

公开(公告)日：1984-07-17

申请号：US383841

申请日：1982-06-01

申请人： Akira Hirano ,  Toshio Koga

发明人： Akira Hirano ,  Toshio Koga

IPC分类号： H04N7/26 ,  H04N7/32 ,  H04N7/36 ,  H04N7/12

CPC分类号： H04N19/567 ,  H04N19/152 ,  H04N19/50 ,  H04N19/503 ,  H04N19/51

摘要： In an adaptive predictive coding system for television signals in which one optimum prediction function is selected in block unit from a plurality of prediction functions alloted to a plurality of blocks each consisting of a plurality of picture elements which divide each frame for the television signal and the optimum prediction function is used for predictive coding of the television signal, a motion vector is determined in accordance with both motion vector information and prediction error information, so that the efficiency of coding can be remarkably improved especially where the transmission speed is low.

摘要翻译： 在一种用于电视信号的自适应预测编码系统中，其中从块单元中选择一个最佳预测函数，该多个预测函数分配给多个块，每个块由多个图像元素组成，每个图像元素分割电视信号的每个帧， 最佳预测函数用于电视信号的预测编码，根据运动矢量信息和预测误差信息确定运动矢量，从而可以显着提高编码效率，特别是在传输速度低的情况下。

公开(公告)号：US4144543A

公开(公告)日：1979-03-13

申请号：US861340

申请日：1977-12-16

申请人： Toshio Koga

发明人： Toshio Koga

IPC分类号： G06T9/00 ,  H03M3/04 ,  H04N7/36 ,  H04N11/04 ,  H04N7/12

CPC分类号： H04N11/046 ,  H03M3/042 ,  H04N19/503

摘要： A predictive encoder produces a prediction error signal in response to an autocorrelated signal, such as a television broadcast signal. The encoder includes a prediction signal producing circuit for producing several prediction signals for each sample element of the autocorrelation signal. The several prediction signals comprise preferably a single intraframe prediction signal and a group of interframe or interfield prediction signals. The group of prediction signals are compared with the sample element of the autocorrelation signal to produce a selection signal indicative of which one of the group gives the best approximation of the autocorrelated signal. The prediction signal of the group giving the best approximation along with the intraframe prediction signal are selected out of the total number of prediction signals. A further selection is made between the two first selected prediction signals according to a prediction error signal. The last selected prediction signal is compared with the autocorrelation signal to form a prediction error signal which is transmitted along with the selection signal. A predictive decoder for use in combination with the encoder reproduces the prediction error signal, and the selection signal produces the prediction signals corresponding to those used in the encoder, selects at least two thereof according to the reproduced selection signal, and again selects one of the last-mentioned at least two prediction signals according to the reproduced prediction error signal.

摘要翻译： 预测编码器响应于诸如电视广播信号之类的自相关信号产生预测误差信号。 编码器包括一个预测信号产生电路，用于产生自相关信号的每个样本元素的几个预测信号。 几个预测信号优选地包括单个帧内预测信号和一组帧间或场间预测信号。 将该组预测信号与自相关信号的采样元件进行比较，以产生指示该组中哪一个给出自相关信号的最佳近似的选择信号。 从预测信号的总数中选出与帧内预测信号一起提供最佳近似的组的预测信号。 根据预测误差信号进一步选择两个第一选择的预测信号。 将最后选择的预测信号与自相关信号进行比较，形成与选择信号一起发送的预测误差信号。 与编码器组合使用的预测解码器再现预测误差信号，并且选择信号产生与编码器中使用的预测信号相对应的预测信号，根据再现的选择信号选择其中的至少两个，并再次选择 根据再现的预测误差信号，最后提到至少两个预测信号。