Patent ID: 7461363

Claim:
A system for analyzing response values sum of differential signals, the system comprising: a storage device for storing a design file of differential signal paths restraining the differential signals; and an analyzing module configured for analyzing the response values sum of the differential signals, the analyzing module comprising: a simulator configured for receiving configurations of simulation parameters, for simulating the differential signal paths with an analog transmission channel according to the design file, for simulating differential signal transmissions of the differential signals according to received configurations, and for simulating a plurality of pulse signals into the analog transmission channel according to the received configurations; an analyzing sub-module configured for analyzing the analog transmission channel into different channel modes according to the received configurations, and analyzing the differential signal transmissions into different signal modes corresponding to the different channel modes; a storage sub-module configured for recording an impulse response of each of the channel modes when the plurality of pulse signals are being transmitted through the channel modes; and a calculating sub-module configured for transforming each signal mode and the impulse response of a corresponding channel mode to respectively generate a first value and a second value by utilizing Fast Fourier Transform Algorithm, for multiplying the first value by the second value to generate a third value, for transforming the third value to a fourth value by utilizing Inverse Fast Fourier Transform Algorithm, and for summing all the fourth values corresponding to all of the channel modes to be the response values sum of the differential signals.