Three Color Algorithm for Two-Layer Printed Circuit Boards Layout with Minimum Via

Title & Authors
Three Color Algorithm for Two-Layer Printed Circuit Boards Layout with Minimum Via
Lee, Sang-Un;

Abstract
The printed circuit board (PCB) can be used only 2 layers of front and back. Therefore, the wiring line segments are located in 2 layers without crossing each other. In this case, the line segment can be appear in both layers and this line segment is to resolve the crossing problem go through the via. The via minimization problem (VMP) has minimum number of via in layout design problem. The VMP is classified by NP-complete because of the polynomial time algorithm to solve the optimal solution has been unknown yet. This paper suggests polynomial time algorithm that can be solve the optimal solution of VMP. This algorithm transforms n-line segments into vertices, and p-crossing into edges of a graph. Then this graph is partitioned into 3-coloring sets of each vertex in each set independent each other. For 3-coloring sets $\small{C_i}$, (i
Keywords
Via;Crossing;Coloring;Independent set;Two layer;
Language
Korean
Cited by
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