Sughrue, Mion, Zinn, Macpeak & Seas, PLLC
Moving picture decoding system
 An adder restores an image data by adding an output of a reverse DCT portion and an output of a predicted value calculating portion to output to a macro-block buffer. Data temporarily stored in the macro-block buffer is written in a predicting dynamic memory per a unit of data of one word consisted of 2.times.2 blocks of luminance component (Y), 1.times.2 blocks of Cr component and 1.times.2 blocks of Cb components, via a memory data bus. A prediction reference block of the preceding frame stored in the predicting dynamic memory is output to a reference block buffer via the memory data bus. A restored image data of the preceding frame in the predicting dynamic memory is output to a line buffer via the memory data bus. 
NEC Corporation
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Akira Toshiaki
Sawada Kitsuki