ONE-DIMENSIONAL SYSTOLIC ARRAY TYPE ARITHMETIC DEVICE AND DCT/IDCT ARITHMETIC UNIT USING SAME

摘要

PURPOSE: To facilitate layout operation by making the array structure of the arithmetic device regular. CONSTITUTION: Arithmetic devices 6 to 9 each consisting of a multiplier 10 which inputs a multiplier and a multiplicand and outputs a carry signal and a sum signal, an adder which adds both the output signals of the multiplier 10 to the carry signal and sum signal from the precedent stage and outputs a carry signal and a sum signal, and a register 12 which holds both the output signals of the adder 11 for one cycle are connected in one-dimensional manner array and both outputs of the computing element 9 as the final stage are added together.