| 摘要 |
PURPOSE:To obtain the interpolation data having a small error with a simple constitution by performing the interpolation arithmetic processing with use of the correction data and at the same time correcting the interpolation data obtained from said interpolation arithmetic processing. CONSTITUTION:A correction data producing circuit 3 delivers the prescribed correction data based on the distance information between the sampling points where the interpolation data are obtained. An interpolation arithmetic processing circuit 2 applies the interpolation arithmetic processing to the sampling data based on said correction data, and outputted the interpolation data. Then the interpolation data is weighted to the data obtained via a filter circuit 6 through a multiplication circuit 7 and a coefficient generating circuit 8 in accordance with the distance information. Then the output data on said weighting process is added with the interpolation data given from the circuit 2 via an addition circuit 5. |
