| 摘要 |
PURPOSE:To execute a high-speed high-density image data conversion by calculating, to adjoining image data A and B, the adding value (x) and subtracting value (y) of the data, executing the addition and subtraction of the A, B, (x) and (y) respectively by a prescribed rate and obtaining respective interpolating data. CONSTITUTION:To the adjoining image data A and B, the adding value (x) and subtracting value (y) are calculated by an addition and subtraction calculating circuit 5. An interpolating data arithmetic circuit 8 executes the addition and subtraction of the A, B, (x) and (y) respectively by the prescribed rate (provided that 2<-n>-fold:(n) is a positive integer) and obtains respective interpolating data. The data are successively outputted by a selection output circuit 10. In such a way, by executing the operation of A, B X and Y interpolating data after executing the operation of the (x) and (y), the number of stages in which an adder in the whole is series-connected can be reduced, and, as a result, an operation time in the whole can be shortened. |
