Patent ID: 6559757
Filing Date: 2003-05-06
Classification: H04B

Abstract:
A power line communication system comprising:(a) a processor for encoding digital data into phase packets; (b) a Gray encoder coupled to said processor for Gray encoding said digital data; (c) a sine wave approximator operatively coupled to said processor for generating a high frequency sine wave-shaped communication signal on command by said processor; (d) mean for superimposing said generated high frequency sine wave-shaped communication signal on a low frequency alternating current (AC) power line; (e) means for decoupling said superimposed high frequency sine wave-shaped communication signal from said low frequency AC power line; (f) means for filtering said decoupled high frequency sine wave-shaped communication signal; (g) means for digitizing said filtered decoupled high frequency sine wave-shaped communication signal; (h) a demodulator operatively coupled to said processor for receiving and demodulating said digitized high frequency communication signal to extract phase information therefrom, said demodulated high frequency communication signal sent to said processor for communication data recognition; and (i) a Gray decoder coupled to said demodulator for Gray decoding said digital data signal.