US 6,983,433 B1
Differential line pair impedance adjustment tool
Mark D. Frank, Longmont, Colo. (US); Jerimy C. Nelson, Fort Collins, Colo. (US); and Karl J. Bois, Fort Collins, Colo. (US)
Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US)
Filed on Feb. 13, 2003, as Appl. No. 10/366,208.
Int. Cl. G06F 17/50 (2006.01)
U.S. Cl. 716—5 20 Claims
OG exemplary drawing
 
1. A computer-implemented method for adjusting impedance, comprising:
searching through a list of differential line pairs in a circuit design database for a target differential line pair, said target differential line pair being flagged as having an incorrect characteristic impedance; and
adjusting a position in a circuit layout described in said circuit design database of at least one line in said differential line pair to correct said characteristic impedance.