Patent ID: 7231336
Filing Date: 2007-06-12
Classification: G06F

Abstract:
1. A method of performing a glitch check in simulating a circuit, the method comprising the following steps: determining current maximum and minimum values for an optimization parameter of the circuit; determining a signal characteristic value for circuit simulation based on the current maximum and minimum optimization parameters, said signal characteristic value being the width of a signal pulse; determining a current average optimization parameter; calculating a prime criterion parameter based on the current minimum and maximum optimization parameters and the signal characteristic value; determining whether the prime criterion parameter converges to a prescribed range; simulating the circuit based on the current average optimization parameter; calculating a new signal characteristic value using the circuit simulation; determining the results of the circuit simulation based on the new signal characteristic value; setting the current average optimization parameter to a new optimization parameter in response to the new signal characteristic value; and repeating the process of determining whether the prime criterion parameter converges into the prescribed range, wherein the width of the signal pulse is measured respectively for simulations based on the current minimum, current maximum and current average optimization parameters and wherein the current average optimization parameter is set to be the current minimum optimization parameter if both simulations based on the current minimum and current average optimization parameters indicate the same status, either both succeed or both fail, otherwise the current average optimization parameter is set to be the current maximum optimization parameter.