| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve information compression efficiency in the block coding of a picture signal. SOLUTION: The extent of the movement of a picture is judged by a movement judgement circuit 5 on the basis of a luminance signal on a memory 3, and the ratio of the frame correlation and the field correlation of the picture is detected by a correlation detection circuit 6. A sample number conversion processing circuit 7 determines the contents of processing to be given to a color difference signal on the memory 4 on the basis of the extent of the movement and the ratio of the correlation, and processes the corresponding color difference signal in accordance with the determined contents, and stores it on the memory 8.</p> |
