| 摘要 |
PURPOSE: A color spacer conversion method is provided to substitute an LUT(Look Up Table) storing 256 result values for converting YUV signals to RGB signals to an LUT storing 128 result values, thereby reducing the size of the entire LUT by half. CONSTITUTION: In a color spacer conversion method, an LUT(13) has 2¬(n-1) result values for multiplication included in a formula for calculating RGB signals of N bit from YUV signals of N bit. If input U/V signals exceed 2¬N, RGB signals are calculated by the result values stored in the LUT for the U/V signals. In the other case, complements of 2 for the U/V signals are obtained and RGB signals are calculated by using code values obtained by the inversion of the result values stored in the LUT for the complements of 2.
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