Patent ID: 7168058
Filing Date: 2007-01-23
Classification: G06F,H05K

Abstract:
1. A printed circuit wiring board design supporting device comprising, in order to design a printed circuit board including signal wiring, power planes, and ground planes: a layout data input part for inputting layout data including structure data of said signal wiring, structure data of said power planes, structure data of said ground planes, spacing data between said power planes and said ground planes, and mounting position data of at least one of an active element and a passive element which are mounted on said printed circuit board; a plane structure extraction part for extracting the structure of said power planes and said ground planes; a via hole extraction part for extracting via holes for interconnecting wiring extending at different levels to each other across said power planes and said ground planes; a capacitor extraction part for extracting capacitors connected between said power planes and said ground planes; a measurement part for measuring the distance between said via holes and said capacitors; a distance comparison part for comparing the upper limit of a tolerable distance range between said via holes and said capacitors to measurement distance between said via holes and said capacitors, which is measured by said measurement part, with respect to the spacing between said power planes and said ground planes; and a warning generation part for generating a warning if said measurement distance is larger than the upper limit of said tolerable distance range.