Automatic routing method

Details Automatic routing method Automatic routing method

G - Physics

06

F

G06F 17/50 (2006.01) H01L 21/00 (2006.01)

Patent

CA 2247701

First, initial routing is performed on a net. If a design rule error exists in a wire already routed as a result of the initial routing, the wire already routed, causing the design rule error, is removed. Next, if the wire already routed and removed is a wire interconnecting a movable terminal, freely placeable within a predetermined region, to another terminal, then the movable terminal is displaced within the predetermined region and the removed wire is re-routed such that the displaced movable terminal is interconnected to the other terminal. Accordingly, the movable terminal can be located at an appropriate position within the predetermined region in accordance with the situation of surrounding wires. As a result, routing results of a higher density can be obtained.

Premièrement, un câblage initial d'un réseau est réalisé. Dans le cas d'une erreur de règle de conception due au câblage initial, le fil source de l'erreur est supprimé. Puis, si le fil supprimé relie à un autre terminal un terminal déplaçable sans difficulté dans une zone prédéterminée, alors le terminal déplaçable est déplacé dans la zone prédéterminée et le fil supprimé est rebranché ailleurs, le terminal déplacé étant ainsi interconnecté à l'autre terminal. Il est ainsi possible d'installer le terminal déplaçable en un point voulu de la zone prédéterminée, en tenant compte de la situation des fils environnants, ce qui permet un câblage de densité supérieure.

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