Patent Document ID: 20020199160
Application ID: 10062496
Patent Flag: 0

Claim One:
1. A power supply network analyzing method for analyzing a characteristic of a power supply network having circuit elements to be supplied with power over power supply lines as current sources and constructed by dividing the power supply lines into resistor elements by using a net list of the power supply network, comprising: a first step of converting the circuit elements to the current sources based on design information and computing the resistor elements included in the power supply lines based on physical information, thereby extracting an entire net list; a second step of selecting a portion of the power supply network which includes the current sources and in which the resistor elements are connected in series, and extracting a partial net list; a third step of acquiring a compressed net list by performing circuit compression on the partial net list; a fourth step of replacing the partial net list with the compressed net list and acquiring voltage values of individual nodes in the entire net list and current values between the individual nodes in the entire net list by applying a supply voltage to a power supply terminal in the entire net list; and a fifth step of acquiring voltage values of individual nodes in the partial net list and current values between the individual nodes in the partial net list by giving both end nodes of the partial net list to voltage values of the individual nodes in the entire net list acquired by the fourth step.