Patent Document ID: 8504956
Application ID: 13460814
Patent Flag: 1

Claim One:
1. A computer implemented method for delay calculation comprising: obtaining, using one or more processors, an input voltage waveform to a circuit wherein the input voltage waveform comprises an input slew and wherein the circuit comprises a driver circuit with an output connected to a wiring circuit wherein the wiring circuit has one or more sinks; pre-processing a composite current source library, wherein the library includes a representation of the driver circuit; determining current waveform moments for the driver circuit based on the pre-processing, the input slew to the driver circuit, and the wiring circuit which is connected to the output of the driver circuit; convolving the current waveform moments for the driver circuit with a frequency domain impulse response function for the wiring circuit to produce a frequency domain function for a voltage waveform at each sink; and calculating a delay and slew to each sink of the circuit based on the frequency domain function for the voltage waveform at each sink, where the input voltage waveform further comprises an input delay.