Wiring pattern design manner and CAD system null for wiring pattern design

摘要

PURPOSE: To easily design the wiring pattern of a printed circuit board equipped with non-grating patterns. ;CONSTITUTION: A wiring block designating means 8 is provided to decide a wiring starting point and a wiring ending point, and a designated point reading means 18 is provided to read the designated points. Further, a dummy wiring pattern generating means 16 is provided to generate a wiring pattern between a starting point and the wiring ending point according to a generating rule in the case of pull-out set in advance when the starting point is the wiring starting point or according to a generating rule in the case of pull-in set in advance when instructed point is coincident with the wiring ending point. When the starting point and the instructed point are set at positions where a rectangle having sides in X and Y directions can be formed with these points as diagonal points, the wiring pattern generated by this means 16 has a shape formed by coupling a line segment straightly advancing from one point along the long side of the rectangle and a line segment reaching from the other point to the long side at a prescribed angle to the side in the X direction.;COPYRIGHT: (C)1993,JPO&Japio