A method for identifying a minimal subset of noise violator nets that can be removed to ensure that no net has quiet noise that exceeds a specified maximum noise. Nets and the coupled noise between them are initially represented in a weighted directed graphical representation. Each net is a vertex in...http://www.google.com.hk/patents/US5471397?utm_source=gb-gplus-share專利 US5471397 - Identifying subsets of noise violators and contributors in package wiring
