| 摘要 |
PURPOSE:To make a high-speed operation possible by utilizing the property of the picture element arrangement of a picture of perform processing such as picture rotation in parallel locally. CONSTITUTION:Local data around a picture element A before rotation is as local data 21. When the picture is rotated at an angle alpha around a point 22, local data 21 is moved to a position 22 with a picture element A' as the center. Local data 23 around the picture element A' which is moved by this rotation is correlated with local data 22. This relation is stored preliminarily in a conversion ROM18; and the rotation angle is obtained by the operation, data is substituted in accordance with a conversion table corresponding to this angle in 8 kinds of area and is outputted from a processor. This data is written in a frame memory 15 through a write circuit 17. If the frame memory 15 is divided into 3X3=9 similarly to a frame memory 12, local data are written in parallel with one address.
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