| 摘要 |
<p>PROBLEM TO BE SOLVED: To miniaturize a picture signal processor for encoding/decoding a picture signal through the use of a main memory and to reduce cost. SOLUTION: A picture input/output block 4 thins Y, Cr and Cb data inputted in parallel by 4:2:2 into 4:1:1, multiplexes them and converts them into a data stream MUX-DATA of Y, Cr and Cb. Then, it is written into the main memory 6 through a buffer 5. Thus, data can be transferred by using the transmission line of one system. A compression/expansion block 7 encodes the data stream into a block unit, decodes input encoding data CMP-DATA and writes it into the main memory 6. A system control block mediates access to the main memory 6 by the respective blocks.</p> |
