Patent ID: 7826551

Claim:
A differential signal transfer method comprising: converting 2 M −1 original signals into 2 M −1 differential signal pairs, where M is an integer of 2 or more, and wherein each pair consists of a first differential signal and a second differential signal having opposite phases; amplifying the 2 M −1 differential signal pairs to obtain 2 M −1 amplified differential signal pairs, each amplified differential signal pair consists of a first amplified differential signal and a second amplified differential signal having opposite phases; and transferring the amplified 2 M −1 differential signal pairs to 2 M signal lines such that each of the 2 M signal lines includes M overlapping amplified differential signals among the first amplified differential signals and the second amplified differential signals of the 2 M −1 differential signal pairs, wherein the 2 M −1 original signals are divided into M different sets of original signals, wherein each m-th set (where m is 1 to M) includes 2 M−m original signals, wherein each of the first and second amplified differential signals of each m-th set of original signals is obtained by amplifying each of the first and second differential signals of each m-th set of original signals by a gain of 2 −m and wherein each of the first and second amplified differential signals of each m-th set of original signals is applied to m of the 2 M signal lines.