Patent ID: 7257792

Claim:
A design aiding apparatus for placing components on a multilayer wiring board with consideration for electromagnetic compatibility quality, comprising: an information storage unit operable to store design information that includes design criterion information, component information, pin information and net information; a plane foil-layer determining unit operable to determine a layer for placing a plane foil; a plane foil-area determining unit operable to determine a plane foil-area for placing the plane foil on the plane foil-layer; a perimeter-area detecting unit operable to detect a perimeter-area having a predetermined margin on the edge of the plane foil-area; a prohibited-area determining unit operable to determine an area on a different layer corresponding to the perimeter-area as a prohibited-area; and a placing unit operable to place components within an area on the different layer corresponding to the plane foil-area excluding the prohibited-area.