Patent ID: 6788743
Filing Date: 2004-09-07
Classification: H04L

Abstract:
A method of increasing the data communicated in a data channel established by transmitting a primary data using a reference clock signal, including the steps of:modulating the reference clock signal with a secondary data to form a modulated reference clock signal containing the secondary data; transmitting the primary data using the modulated reference clock signal; receiving the primary data as received primary data; recovering the modulated reference clock signal from the received primary data to form a recovered modulated reference clock signal; recovering the primary data from the received primary data to form a recovered primary data; and recovering the secondary data from the recovered modulated reference clock signal to form a recovered secondary data, wherein the step of modulating the reference clock signal with secondary data includes the steps of: supplying a data byte value as the secondary data; selecting a modulation frequency corresponding to the data byte value; generating a modulation frequency signal having the selected modulation frequency; and combining the modulation frequency signal with the reference clock signal to form the modulated reference clock signal prior to transmitting the primary data.