公开(公告)号：EP0598346A3

公开(公告)日：1994-12-07

申请号：EP93118303.2

申请日：1993-11-11

申请人： GENERAL INSTRUMENT CORPORATION OF DELAWARE

发明人： Shen, Paul ,  Krause, Edward A. ,  Tom, Adam

IPC分类号： H04N7/137 ,  H04N7/13 ,  H04N7/133 ,  H03M7/42

CPC分类号： H03M7/425 ,  H04N19/13 ,  H04N19/152 ,  H04N19/50 ,  H04N19/60 ,  H04N19/89 ,  H04N19/91

摘要： A method and apparatus are provided for decoding variable length codewords carried in data blocks. A first buffer is loaded with a succession of data blocks. A second buffer is loaded with a first data block from the first buffer during a decoding cycle. The variable length codewords from the first data block in the second buffer are decoded to recover information. The process continues, with the second buffer being loaded with one data block at a time to successively decode new data blocks during successive decoding cycles.

公开(公告)号：EP0562420A3

公开(公告)日：1994-06-01

申请号：EP93104283.2

申请日：1993-03-16

申请人： GENERAL INSTRUMENT CORPORATION OF DELAWARE

发明人： Krause, Edward A. ,  Tom, Adam ,  Liu, Vincent

IPC分类号： H04N7/133

CPC分类号： G06T9/008 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/60 ,  H04N19/91

摘要： A vector coding scheme for video transform coefficients is provided. A vector is generated to identify a group of coefficients from a block of transform coefficients that qualify for transmission according to predetermined criteria. In an illustrated embodiment, only coefficients having nonzero amplitudes are transmitted. The vector is encoded to provide a vector code word for transmission. The coefficients from the group qualifying for transmission are encoded to provide coefficient code words for transmission. The vector code word correlates the coefficient code words to coefficient locations in the block. In a preferred embodiment, the block is divided into a plurality of regions containing subsets of coefficients. A separate vector is transmitted for each region, correlating the coefficient code words to coefficient locations in the corresponding region of the block.

公开(公告)号：EP0598346A2

公开(公告)日：1994-05-25

申请号：EP93118303.2

申请日：1993-11-11

申请人： GENERAL INSTRUMENT CORPORATION OF DELAWARE

发明人： Shen, Paul ,  Krause, Edward A. ,  Tom, Adam

IPC分类号： H04N7/137 ,  H04N7/13 ,  H04N7/133 ,  H03M7/42

CPC分类号： H03M7/425 ,  H04N19/13 ,  H04N19/152 ,  H04N19/50 ,  H04N19/60 ,  H04N19/89 ,  H04N19/91

摘要： A method and apparatus are provided for decoding variable length codewords carried in data blocks. A first buffer is loaded with a succession of data blocks. A second buffer is loaded with a first data block from the first buffer during a decoding cycle. The variable length codewords from the first data block in the second buffer are decoded to recover information. The process continues, with the second buffer being loaded with one data block at a time to successively decode new data blocks during successive decoding cycles.

摘要翻译： 提供了用于解码数据块中携带的可变长度码字的方法和设备。 第一个缓冲区加载了一系列数据块。 在解码周期期间，第二缓冲器被加载来自第一缓冲器的第一数据块。 来自第二缓冲器中的第一数据块的可变长度码字被解码以恢复信息。 该过程继续，第二缓冲器一次加载一个数据块，以在连续的解码周期中连续地解码新的数据块。

公开(公告)号：EP0562420A2

公开(公告)日：1993-09-29

申请号：EP93104283.2

申请日：1993-03-16

申请人： GENERAL INSTRUMENT CORPORATION OF DELAWARE

发明人： Krause, Edward A. ,  Tom, Adam ,  Liu, Vincent

IPC分类号： H04N7/133

CPC分类号： G06T9/008 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/60 ,  H04N19/91

摘要： A vector coding scheme for video transform coefficients is provided. A vector is generated to identify a group of coefficients from a block of transform coefficients that qualify for transmission according to predetermined criteria. In an illustrated embodiment, only coefficients having nonzero amplitudes are transmitted. The vector is encoded to provide a vector code word for transmission. The coefficients from the group qualifying for transmission are encoded to provide coefficient code words for transmission. The vector code word correlates the coefficient code words to coefficient locations in the block. In a preferred embodiment, the block is divided into a plurality of regions containing subsets of coefficients. A separate vector is transmitted for each region, correlating the coefficient code words to coefficient locations in the corresponding region of the block.

摘要翻译： 提供了一种用于视频变换系数的矢量编码方案。 产生矢量以根据预定标准从符合传输条件的变换系数块中识别一组系数。 在所示实施例中，仅发送具有非零幅度的系数。 向量被编码以提供用于传输的向量码字。 对来自符合传输的组的系数进行编码以提供用于传输的系数码字。 矢量码字将系数码字与块中的系数位置相关联。 在优选实施例中，块被分成包含系数子集的多个区域。 对于每个区域发送单独的向量，将系数码字与块的相应区域中的系数位置相关联。

公开(公告)号：EP0562420B1

公开(公告)日：1998-08-12

申请号：EP93104283.2

申请日：1993-03-16

申请人： GENERAL INSTRUMENT CORPORATION OF DELAWARE

发明人： Krause, Edward A. ,  Tom, Adam ,  Liu, Vincent

IPC分类号： H04N7/30

CPC分类号： G06T9/008 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/60 ,  H04N19/91