Patent ID: 7639001
Filing Date: 2009-12-29
Classification: H04B,H04L

Abstract:
1. An apparatus for providing auxiliary channel communication on an electrical signal-based network, the apparatus comprising: an electrical signal source adapted to provide a high-speed data signal extending over a high frequency range and having a first maximum peak-to-peak value, the signal source adapted to provide an auxiliary data signal extending over a low frequency range below the high frequency range and having a second maximum peak-to-peak value smaller than the first maximum peak-to-peak value, wherein the second maximum peak-to-peak value is at least two orders of magnitude smaller than the first maximum peak-to-peak value, the second maximum peak-to-peak value is larger than at least twice a RMS noise voltage, ν  wherein k is Avogadro's number, T is temperature in K, and B is the bandwidth of the low frequency range; and a controller coupled to the signal source for controlling the signal source to produce the high-speed data signal and for modulating the high-speed data signal with the auxiliary data signal.