| 摘要 |
PROBLEM TO BE SOLVED: To speed up dividing process at the time of quantization by using the quotient obtained by dividing 1st data by 2nd data as the result of a comparison of large/small relation between each multiplication result and the 1st data. SOLUTION: Respective multipliers 18 to 25 multiply given divisors by specified multipliers. Respective comparators 26 to 33 inputs tmp as a DCT coefficient and a divisor which is multiplied as specified and compare the both with each other, thereby outputting '1' as their comparison results when tmp is less than the divisor which is multiplied as specified. When tmp is larger than the divisor, on the other hand, the comparators 26 to 33 output '0' as their comparison results. The comparators 26 to 32 supply their output values to a counter 34. Further, the comparator 33 supplies the output value as its comparison result to a computing element 14. Namely, the comparator 33 informs the computing element 14 of the result of the comparison between tmp and the multiplied divisor as a decision result showing whether or not tmp meets specific requirements. |
