A circuit board includes multiple segments, with a first segment having plural signal layers and a second segment having plural signal layers. Signal paths provided by signal layers of the first segment exhibit higher speed signal transmission capability than signal paths provided by the signal layers...http://www.google.fr/patents/US7196906?utm_source=gb-gplus-shareBrevet US7196906 - Circuit board having segments with different signal speed characteristics
Circuit board having segments with different signal speed characteristics
