Patent ID: 7886249

Claim:
A method executed by a computer for supporting design of a printed circuit board having a first major and a second major surfaces for mounting a plurality of elements, the method comprising: a step of the computer creating a copy of a plan view of the first major surface and a mirror copy of a plan view of the second major surface; a step of performing a calculation for obtaining a shortest straight line distance between one of the elements appearing in the copy and another of the elements appearing in the mirror copy when the copy and the mirror copy are placed side by side so that the copy and the mirror copy contact each other, wherein the shortest straight line distance is a length of a line between the one and the another intersecting obliquely with a line at which the copy and the mirror copy contact each other; and a step of obtaining a creepage distance between the one of the elements and the another of the elements by adding a value of a thickness of the printed circuit board to a value of the shortest straight line distance.