| 摘要 |
PROBLEM TO BE SOLVED: To reduce the area of lookup tables. SOLUTION: A plurality of one-port split lookup tables 22a and 22b having alternately stored therein correction data corresponding to input data are provided as a lookup table that has stored therein the correction data corresponding to the input data at predetermined intervals relevant to predetermined higher-order bits. An address generating unit generates addresses for the plurality of corresponding split lookup tables 22a and 22b from the input data. An interpolation arithmetic unit 26 executes interpolation arithmetic with the use of lower-order bits of the input data for readout data read from two lookup tables. COPYRIGHT: (C)2009,JPO&INPIT
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