Patent ID: 8150266
Filing Date: 2012-04-03
Classification: H04B

Abstract:
1. A method for performing differential signaling through parallel ports in a manner that reduces noise caused by coupling between neighboring ports, comprising: transmitting a number of differential signals from a sender to a receiver through parallel ports; wherein the parallel ports are organized in a two-dimensional grid; wherein each differential signal is transmitted through a first port and a second port that carry complementary positive and negative components of the differential signal; wherein the first and second ports of a differential pair are diagonally adjacent to each other in the two-dimensional grid; whereby because the first and second ports transition in opposite directions, coupling noise is cancelled on a neighboring port that is horizontally adjacent to the first port and vertically adjacent to the second port, and wherein a transition on the neighboring port couples equally to the first and second ports and is consequently rejected as common-mode noise by a corresponding differential receiver, wherein four differential pairs in the two-dimensional grid are arranged into a tiling pattern that can be replicated to cover the two-dimensional grid, wherein: