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1.发明授权
公开(公告)号：US5177797A
公开(公告)日：1993-01-05
申请号：US496006
申请日：1990-03-20
摘要： An image data coding system, wherein an image data in a bit map form is divided into first and second groups, pixels in each group of which are distributed over the whole area of the image data in the bit map form. First and second coders respectively code the first and second groups of image data into first and second groups of coded image data. The first and second groups of image data in the original image data are respectively input into first and second memories, respectively. Blocks of the first group of image data are supplied to the first coder at first times, respectively, and blocks of the second group of image data are supplied to the second coder at second times, respectively. Boundaries of the blocks in the first group of image data are located in different positions from boundaries of the blocks in the second group of image data, and the first times are different from the second times. In the receiver side, first and second decoders respectively decode the above first and second groups of coded image data into first and second groups of decoded image data. By composing the first and second groups of decoded image data, the original image data in the bit map form is restored.
摘要翻译： 一种图像数据编码系统，其中位图形式的图像数据被划分为第一组和第二组，每组中的像素以位图形式分布在图像数据的整个区域上。 第一和第二编码器分别将第一和第二组图像数据编码为第一组和第二组编码图像数据。 分别将原始图像数据中的第一组图像数据和第二组图像数据分别输入到第一和第二存储器中。 第一组图像数据的块分别在第一次被提供给第一编码器，并且第二组图像数据的块分别在第二次被提供给第二编码器。 第一组图像数据中的块的边界位于与第二组图像数据中的块的边界不同的位置，并且第一次与第二次不同。 在接收机侧，第一和第二解码器分别将上述第一组和第二组编码图像数据解码为第一组和第二组解码图像数据。 通过构成第一组和第二组解码图像数据，恢复位图形式中的原始图像数据。
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公开(公告)号：US5327173A
公开(公告)日：1994-07-05
申请号：US655359
申请日：1991-02-19
CPC分类号： H04N19/124 , H04N19/50 , H04N19/503 , H04N5/926
摘要： A moving image coding apparatus comprises: an intraframe coding circuit for carrying out band compression of moving image data by intraframe coding; an interframe coding circuit for carrying out band compression of moving image data by interframe coding; a block division circuit for dividing data in each frame into a plurality of blocks each of which includes a predetermined number of pixels; and a coding switch circuit for switching a coding operation which is carried out in the coder, so that coding is carried out by the intraframe coding circuit for moving image data of a predetermined portion of pixels in each of the plurality of blocks, and coding is carried out by the interframe coding circuit for moving image data of a remaining portion of pixels in each of the plurality of blocks. A moving image decoding apparatus comprises: an interframe decoding circuit for decoding moving image data which is band compressed by interframe coding; an intraframe decoding circuit for decoding moving image data which is band compressed by intraframe coding; and a decoding switch circuit for switching a decoding operation which is carried out in the decoder, so that decoding is carried out by the intraframe decoding circuit when moving image data which is band compressed by intraframe coding is input, and decoding is carried out by the interframe decoding circuit when moving image data which is band compressed by interframe coding is input.
摘要翻译： PCT No.PCT / JP90 / 00799 Sec。 371日期1991年2月19日 102（e）1991年2月19日PCT申请1990年6月19日PCT公布。 WO90 / 16130 PCT出版物 日期：1990年12月27日。运动图像编码装置包括：帧内编码电路，用于通过帧内编码对运动图像数据进行带宽压缩; 帧间编码电路，用于通过帧间编码进行运动图像数据的频带压缩; 块分割电路，用于将每帧中的数据分成多个块，每个块包括预定数量的像素; 以及用于切换在编码器中执行的编码操作的编码开关电路，使得通过帧内编码电路进行编码，以移动多个块中每个块中的预定部分像素的图像数据，并且编码是 由帧间编码电路执行，用于移动多个块中每个块中的剩余部分像素的图像数据。 一种运动图像解码装置，包括：帧间解码电路，用于对通过帧间编码进行频带压缩的运动图像数据进行解码; 一个帧内解码电路，用于对通过帧内编码进行频带压缩的运动图像数据进行解码; 以及用于切换在解码器中执行的解码操作的解码开关电路，使得当通过帧内编码进行了频带压缩的运动图像数据被输入时，通过帧内解码电路进行解码，并且解码由 输入通过帧间编码进行频带压缩的图像数据的帧间解码电路。
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公开(公告)号：US4754336A
公开(公告)日：1988-06-28
申请号：US942286
申请日：1986-12-16
申请人： Yoshitsugu Nishizawa
发明人： Yoshitsugu Nishizawa
CPC分类号： H04N19/93 , H04N19/129 , H04N19/15 , H04N19/593 , H04N19/13 , H04N19/91
摘要： A picture data communication system with a scanning pattern change includes a plurality of scanning pattern selecting units responsive to input picture signals for selecting a type of scanning pattern, a plurality of difference encoding and quantizing units responsive to the outputs of the scanning pattern selecting units for encoding and quantizing differences between data in adjacent frames in a sequence of frames for pixels and quantizing the encoded difference data. The system also includes a plurality of subsequent encoding units responsive to the outputs of the difference encoding and quantizing units for encoding the quantized encoded difference data and encoding and run length data representing the length of a sequence of the same pixel information, a comparison unit for comparing amounts of information between the outputs of the plurality of subsequent encoding units for determining the output of the minimum amount of information, a selection unit responsive to the outputs of the subsequent encoding units and the comparison unit for selecting the output of the minimum amount of information, and an identification unit responsive to the output of the selection unit for inserting a discrimination code to the selected output of the minimum amount of information.
摘要翻译： 具有扫描图案变化的图像数据通信系统包括多个扫描图案选择单元，其响应于用于选择扫描图案的类型的输入图像信号，响应于扫描图案选择单元的输出的多个差分编码和量化单元 编码和量化用于像素的帧序列中的相邻帧中的数据之间的差异并量化编码的差分数据。 该系统还包括响应于差分编码和量化单元的输出的多个后续编码单元，用于对量化的编码差分数据进行编码和编码和运行表示相同像素信息的序列的长度的长度数据;比较单元， 比较用于确定最小信息量的输出的多个后续编码单元的输出之间的信息量，响应于后续编码单元的输出的选择单元和用于选择最小量的输出的比较单元 信息和识别单元，其响应于所述选择单元的输出，用于将识别代码插入所选择的最小信息量的输出。
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