首页>
外国专利>
The digital coefficient operation device and the digital filter device null which use the quorum multiplier and the quorum
The digital coefficient operation device and the digital filter device null which use the quorum multiplier and the quorum
展开▼
机译:使用定额乘法器和定额的数字系数运算装置和数字滤波器装置为零
展开▼
页面导航
摘要
著录项
相似文献
摘要
PROBLEM TO BE SOLVED: To contrive miniaturization, reduction of power consumption and speed up of an arithmetic operation by reducing the number and scale of adders in the constant multiplier.;SOLUTION: In the constant multiplier 1 to perform multiplication between a definite multiplier 'M' and an indefinite multiplier 'X', when plural multiplication term groups '3j' (j is a positive integer) consisting of three power terms of 2 exist in a formula of power of 2 developed from definite multiplier 'M', a multiplication formula '1' is calculated from a multiplication formula '0' so that the group of multiplication terms are replaced with the multiplication formula '1' formed by multiplying the indefinite multiplier 'X' by a formula replaced with a multiplication term group '3j' as a common term and a multiplication term group '3j' left by binding the multiplication term group '3j' and the constant multiplier 1 is constituted so as to perform multiplication of the multiplication formula '1'. The constant multiplier 1 is constituted by arranging an addition sign by making it correspond to the adder and arranging a multiplication sign by making it correspond to a shift circuit and a code converting part 105 to match the sign of the definite multiplier 'M' is provided at the last stage.;COPYRIGHT: (C)2001,JPO
展开▼