Patent Document ID: 20110302543
Application ID: 13213714
Patent Flag: 0

Claim One:
1. A pattern designing method, comprising the steps of: carrying out transfer simulation calculation and step simulation calculation by using physical layout data produced from circuit design data, and comparing a result of the transfer simulation calculation and the step simulation calculation with a preset standard; carrying out calculation for electrical characteristics by using parameters obtained from the physical layout when as a result of the comparison, the preset standard is fulfilled; and carrying out calculation for a resistance value and a capacitance value in a physical layout in a cross-sectional direction of coordinates of a portion in which the preset standard is not fulfilled when as a result of the comparison, the preset standard is not fulfilled, carrying out calculation for the electrical characteristics by using parameters obtained from the physical layout when a result of the calculation falls within a preset tolerance, and carrying out calculation for the electrical characteristics when the result of the calculation does not fall within the preset tolerance by reflecting the result of the transfer simulation calculation and the step simulation calculation in the parameters, thereby extracting the parameters.