Soft pin locations in a hybrid paradigm are optimized according to circuit density centers of circuit components coupled to the soft pins. As a result, the soft pins are located closer to components with heavier loads and further from components with lighter loads. Circuit density centers are determined...http://www.google.de/patents/US6298468?utm_source=gb-gplus-sharePatent US6298468 - Placement-based pin optimization method and apparatus for computer-aided circuit design
