| 摘要 |
PURPOSE:To improve the wiring accuracy by preparing a wiring layer including >=3 layers having different pattern running directions and performing the calculation of the congestion degree of each layer, the calculation of the using score of each layer, and the production of a wiring pattern respectively for each wiring subject section. CONSTITUTION:A wiring pattern is automatically decided based on the limit information on the wiring as well as a wiring subject section including of the start and target points of a circuit consisting of a multi-layer wiring layer containing plural wiring layers of different pattern running directions. In this case, the coordinates of the start and target points of a wiring pattern forming a wiring subject section and the wiring limit conditions are read out of a design information file 22 and inputted to a computer 21 in a wiring subject section extracting step S1. The congestion degree of each layer is calculated in a congestion degree calculating step S2, and the using score is calculated for each layer in a score calculating step S3. Then a wiring pattern is produced in a wiring pattern producing step S4 and then a wiring pattern is decided S5. |
