Patent ID: 6980657

Claim:
A communications receiver, comprising: a chaotic oscillator having an oscillator portion and a chaotic portion with a non-linear resistance element such that when said oscillator and chaotic portions are coupled, they form said chaotic oscillator; a synchronizing resistor that couples said oscillator portion and said chaotic portion to pass a current signal therebetween; said oscillator portion being signally coupled to a communications medium carrying a modulated chaotic signal; said chaotic portion being signally coupled directly to said communications medium such that a voltage of said communications medium is directly applied to said chaotic portion through a circuit path parallel to a coupling allowing said current signal to pass between said oscillator portion and said chaotic portion; a comparator having a first input coupled to said communications channel and a second input coupled to said chaotic portion, wherein the synchronizing resistor is adjusted so that an output of said comparator is clean and clear, and wherein the output of said comparator indicates, by nominal zero levels, a difference between a frequency characterizing said modulated chaotic signal and a frequency of said chaotic portion; and said chaotic portion being coupled to said communications medium through a resistor bridging said first and second inputs of said comparator.