An interactive optimization technique for the nominal design of integrated circuits

It is pointed out that in solving the nominal design problem, proper values must be assigned to the set of designable parameters of an integrated circuit in such a way that the requirements of the circuit characteristics are fulfilled. The approach outlined here is based on a boundary curve of the optimization problem, the curve serving as an assessment criterion in visualizing the problem condition and controlling the entire optimization process. A standardized representation of the boundary curve suited for graphic terminals is presented, along with an analysis of its characteristics and computational methods for evaluating the boundary curve. By way of example, the approach is applied to a multiple objective design problem of an integrated circuit.