公开(公告)号：US07228064B2

公开(公告)日：2007-06-05

申请号：US10211716

申请日：2002-08-02

申请人： Yoshiyuki Wada ,  Makoto Hirai ,  Tokuzo Kiyohara ,  Kosuke Yoshioka ,  Hideshi Nishida ,  Yukiharu Ieda

发明人： Yoshiyuki Wada ,  Makoto Hirai ,  Tokuzo Kiyohara ,  Kosuke Yoshioka ,  Hideshi Nishida ,  Yukiharu Ieda

IPC分类号： H04N7/26 ,  H03N7/40

CPC分类号： H04N9/7921 ,  H04N5/78266 ,  H04N9/8042 ,  H04N9/8047 ,  H04N19/42

摘要： The present invention provides an image decoding apparatus that realizes speed-up processing of taking out an MR (macroblock remainder) from a fixed length unit that consists of a first DCT block and the MR, without increasing cost. A Setup processor 3 outputs one out of a plurality of fixed length units that constitute an SB (synchronized block). First, calculation is performed for a length from a beginning of the fixed length unit to a EOB (end of block) that is included in the fixed length unit. The calculated length is then used as an offset in taking out the MR. Then an end portion of a second DCT block that is included in the MR is combined with a corresponding beginning portion of the second DCT block, in order to obtain the complete second DCT block. The complete second DCT block is outputted to a variable length code decoder 13.

摘要翻译： 本发明提供一种图像解码装置，其实现从由第一DCT块和MR组成的固定长度单元取出MR（宏块余数）的加速处理，而不增加成本。 安装处理器3输出构成SB（同步块）的多个固定长度单元中的一个。 首先，从固定长度单位的开始到包括在固定长度单位中的EOB（块末尾）的长度进行计算。 然后将计算出的长度用作取出MR的偏移量。 然后，包括在MR中的第二DCT块的结束部分与第二DCT块的对应开始部分组合，以便获得完整的第二DCT块。 完整的第二DCT块被输出到可变长度码解码器13。