| 摘要 |
<p>PURPOSE:To improve processing efficiency by detecting intra-frame and odd and even inter-field moving vectors and the added difference of the absolute value of each picture element, selecting an efficient mode from movement compensation and respective block division modes, and controlling a frame memories with movement compensation device. CONSTITUTION:Frame/field movement detection circuits 22 and 21 detects the intra-frame and add and even inter-field moving vectors as well as the added difference of the absolute value of each picture element. A movement prediction mode discrimination circuit 23 and a selector 24 select the efficient mode from among the movement compensation modes in the unit of frame/field. A block division mode discrimination circuit 25 selects the efficient mode from among the respective block division modes for frame/field orthogonal transformation. An address generator 11 controls a frame memory group 10 based on the output of the circuit 25, and a frame memory group 20 with a movement compensation device operates based on the outputs of the circuits 23, 25. Thus, the field or frame processing efficiency can be improved.</p> |
