| 摘要 |
PROBLEM TO BE SOLVED: To produce smooth magnification interpolation image data and to improve the image quality after magnification by making a circuit configuration that includes as selection circuit which selects write data to line memory, vertical/horizontal interpolation arithmetic circuits which produce vertical/ horizontal interpolation line data and vertical/horizontal interpolation parameter generation circuits which generate an arithmetic parameter. SOLUTION: In a vertical magnification operation in an image magnification circuit, a frame memory read signal generation circuit 1 reads data from frame memory 2. A selection circuit 7 selects data of the memory 2 or frame memory 5. A vertical interpolation arithmetic circuit 9 applies a frame memory arithmetic parameter to data that is read from the memory 2, also applies a line memory arithmetic parameter to data that is read from the memory 5, makes data after vertical interpolation by finally adding both data and outputs the data to a horizontal interpolation arithmetic circuit 11. |
