| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the circuit scale of hardware and to improve a processing speed by diverting midway calculating data of the fixed coefficient multiplication of color difference for converting data R and midway calculating data of fixed coefficient multiplication for converting data B to the conversion calculation of data G. SOLUTION: Midway calculation data of the fixed coefficient multiplication of the color difference Cr for converting data R and midway calculating data of fixed coefficient multiplication for converting data B are directed to the conversion calculation of data G. Then a G conversion part 6 is provided with partial product generation circuits 71 and 72 respectively supplied with the respective midway calculation results SR and SB of an R conversion part 4 and a B conversion part 5 to give perspective necessary shift operation and generating respective partial products MR and MB, an adding circuit 61 adding the partial products MR and MB to generate a partial product MRB, an inverter I61 inverting the partial product MRB to generate an inverted partial product BMRB, and a two-input adding circuit 62 adding a luminance Y and the inverted partial product BMRB outputting data G.</p> |
