METHOD AND APPARATUS FOR TRANSMITTING INTELLIGENCE OVER A CARRIER

摘要

A method and apparatus for transmitting intelligence over a carrier wave are disclosed in which a signal wave is combined with a carrier wave to produce a composite wave having a recognizable pattern of variations in intervals that are defined by preselected locations in the composite wave. The pattern of variations in intervals resulting from the combination of the signal wave with the carrier wave represents at least a portion of the intelligence to be transmitted over the carrier wave. The intelligence is extracted from the composite wave for subsequent utilization. In the preferred embodiment the intelligence is transmitted over an electric power distribution network utilizing the alternating wave thereon as the carrier wave. The variations in intervals defined by the preselected locations in the wave are detected and the detected interval variations are converted into a signal which has a characteristic that is a function of the recognizable pattern of interval variations.