| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the amount of hardware without deteriorating processing speed. <P>SOLUTION: As for filters #1 and #2, a filter computing unit 1 carries out product sum operation of input data f0-f2 and respective two or more filter factors consisting of the filters #1 and #2 by using booth algorithm. The filter computing unit 1 comprises: two or more partial product generation units 3 and 4 for generating one or more partial product by inputting one or more group data consisting of filter factors corresponding to input data and the above input data; an adder 10 for generating the summation of partial products; and selectors 7 and 8 which input group data into either one or both of the partial product generation units 3 and 4. For example, in the case where a part of the partial product to be generated from one-group data cannot be generated by the partial product generation unit 3, the selectors 7 and 8 input the group data into the partial product generator of the other partial product generation unit 4 along with the partial product generation unit 3 so as to generate the partial product. <P>COPYRIGHT: (C)2008,JPO&INPIT |
