Patent ID: 6898616
Filing Date: 2005-05-24
Classification: H04L

Abstract:
1. An arbitrary function generating circuit employing a simple arithmetic circuit element for calculating the following generalized Lotka-Volterra equation (Equation 1), (x i is the size of a population i representing the elements of a system; μ ij is a constant of interaction between the elements; and r i is an intrinsic constant for each element representing the growth rate of the population i;) the arbitrary function generating circuit comprising: a plurality n of modules, each having a plurality n of input terminals and one output terminal; and a plurality n of connecting wires including a first connecting wire for connecting the output terminal of the first module to the first input terminal of each module; a second connecting wire for connecting the output terminal of the second module to the second input terminal of each module; and continuing in a like manner until the nth connecting wire for connecting the output terminal of the nth module to the nth input terminal of each module; each module comprising: a group of n variable resistors connected to the n input terminals; an output sum connecting wire connecting the output terminals of the variable resistors to total their output values; a multiplier having an amplifier for multiplying the total of the output values by the output value from the corresponding module; and an integrator for integrating the output values.