In a design aiding apparatus of the present invention, a plane clearance setting unit acquires information showing a predetermined margin, a component placement unit determines a placement area of a component such that, as seen in a lamination direction of a multilayer wiring board, at least one of the...http://www.google.com.hk/patents/US7257792?utm_source=gb-gplus-share專利 US7257792 - Wiring board design aiding apparatus, design aiding method, storage medium, and computer program
