Importance

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Abstract

A layout data converter (111) is supplied with layout data and prepares segment data. In response to an instruction from an operating section (102), an instruction input device prepares necessary data. In order to move each component in a movement target direction, a terminal constraint graph generator (104) calculates, with reference to the respective data, a moving group relative movement limit length within which one component is movable towards another component with a wire interposed therebetween, subtracts the moving group relative movement limit length from a moving distance of the one component to obtain a difference, and memorizes the difference as a moving distance of the other component. A component compactor (107) moves each component over the moving distance thus obtained. A wire compactor (108) calculates routing limit position data representative of a routing limit position determined by pulling the wire between the components around the other component. A rerouting unit trims the wire and reroutes the wire within the routing limit range.

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First Claim