To fully evaluate a real signal line and a real memory cell adjacent to a dummy signal line and utilize dummy signal line as real signal line, a semiconductor memory includes at least one real signal line connected to real memory cells driven by a real driver and at least one dummy signal line outside...http://www.google.com/patents/US7697355?utm_source=gb-gplus-sharePatent US7697355 - Semiconductor memory and system with matching characteristics of signal supplied to a dummy signal line and a real signal line
