Patent ID: 7398506

Claim:
A net list producing device for producing a net list with interconnection parasitic element of a second circuit formed of repetition of a first circuit comprising: a first circuit information producing unit obtaining a physical terminal coordinate, a physical terminal name and a logical terminal name of said first circuit and layout data, and operating, based on said obtained physical terminal coordinate, said obtained physical and logical terminal names and said obtained layout data, to specify a parasitic element parasitic on an interconnection of said first circuit, and to produce first circuit information including said physical terminal name and representing physical properties and a connection relationship of an inner element of said first circuit and said parasitic element; a second circuit information producing unit obtaining connection information determining a connection relationship of physical terminals of all of said first circuits included in said second circuit, assigning node names to the physical terminals of all of said first circuits included in said second circuit based on said connection information, and producing second circuit information representing node names of all of said first circuits included in said second circuit; and a second circuit net list producing unit producing a net list of said second circuit formed of said first circuit information and said second circuit information.