Patent ID: 7251802

Claim:
A wiring route deciding system for a wiring board containing a multi-pin part, the system comprising: an input unit for receiving wiring board and wire connection information, wiring constraint information, and wiring setting information; a draw wiring processing unit for deciding a wiring route of a draw wiring from a part pin to a part periphery boundary according to the various wiring information inputted by the input unit; an inter-draw wire wiring processing unit for deciding a wiring route between end points of the wiring route of a draw wiring decided by the draw wiring processing unit; and an output unit for outputting a wiring route information decided by the draw wiring processing unit and the inter-draw wire wiring processing unit, wherein the draw wiring processing unit includes: an extraction processing unit for cutting out one or more parts connected to a net according to part areas, the one or more parts being expanded by a wiring margin area around the parts, from a real wiring board and arranging them onto a virtual wiring board; an arrangement processing unit for performing an arrangement such that the direction of each of the parts and pin arrangement are appropriate on the virtual wiring board; a wiring processing unit for deciding a wiring route between the parts on the virtual wiring board and a draw wiring information in the part areas; and a feedback processing unit for cutting out a draw wiring information in the part areas decided by the wiring processing unit on the virtual wiring board, such part areas being previously cut out by the extraction processing unit from the real wiring board, and performing feedback processing of the draw wiring information to the real wiring board.