动态影像预测译码设备(200)系具备：输入端子(201)、译码器(202)、逆量化器(203)、逆转换器(204)、加算器(205)、输出端子(206)、运动补偿器(207)、运动信息复原器(208)、画格内存(104)、运动信息用内存(113)。运动信息复原器(208)系具备：第1运动信息复原器(211)、第0运动信息复原器(212)。 第0运动信息复原器(212)，系将第0附加信息予以输入，从相邻区块之运动信息，生成第0预测运动矢量，将预测运动矢量与附加信息中所含之差分运动矢量进行加算，以生成第0运动信息中所含之运动矢量，借此而复原第0运动信息。第1运动信息复原器(211)，系将第1附加信息予以输入，从经由L113所得之已译码之运动信息，生成第1预测运动矢量。将该预测运动矢量当成第1运动信息中所含之运动矢量，借此而复原第1运动信息。

The invention relates to a dynamic image prediction decoding device and method. A prediction signal generator within a dynamic image prediction encoding device comprises: a means for estimating a No. 0 motion vector for obtaining a No. 0 prediction signal, selecting a No. 0 prediction motion vector similar to the No. 0 motion vector, and generating No. 0 additional information which comprises a No. 0 prediction motion information index for identifying the prediction motion vector, and a difference motion vector that is determined by the No. 0 motion vector and the No. 0 prediction motion vector; a means for selecting a motion vector for generating a No. 1 prediction signal that is highly correlated with an area to be encoded, generating No. 1 additional information comprising a No. 1 prediction motion information index for identifying the motion vector as a No. 1 prediction motion vector, and setting the No. 1 prediction motion vector as a No. 1 motion vector; and a means for combining the No. 0 and No. 1 prediction signals to generate a prediction signal for the area to be encoded.