Patent ID: 7741876

Claim:
A differential transmission line that is provided on a printed circuit board furnished with a plurality of laminated conductor layers, and that is furnished with at least three signal lines that transmit a differential signal from a driver unit on the printed circuit board to a receiver unit on the printed circuit board, wherein the at least three signal lines are provided in at least two conductor layers of the plurality of conductor layers, and wherein the signal lines comprise: (a) a signal line parallel segment in which the signal lines run parallel; (b) a first signal line route length adjustment segment, connecting from a differential signal output terminal in the driver unit to the signal line parallel segment, for adjusting the length of the signal line; and (c) a second signal line route length adjustment segment, connecting from the signal line parallel segment to a differential signal input terminal in the receiver unit, for adjusting the length of the signal line; and wherein the signal lines are formed such that they are equal in length to one another in the first signal line route length adjustment segment.