Patent ID: 6229432
Filing Date: 2001-05-08
Classification: H04B

Abstract:
A module for power line control systems to enhance electrical appliance control on a single board, said single board comprising:a transmitter circuit for sending signals over a power line;a receiver circuit for receiving signals transmitted over the power line; anda control circuit coupled to said transmitting circuit and said receiving circuit, said control circuit including a microprocessor, a signal attenuation control circuit coupled to said receiver circuit, said signal attenuation circuit including a zero crossing detect circuit coupled to said microprocessor, said signal attenuation circuit structured and arranged to vary the amount of attenuation in relation to a count of complement pair signal pulses received by said receiver circuit, and associated memory, said memory including instructions enabling said microprocessor to interpret the conditioned received signals, generate transmit signals, attenuate the received signals according to the complement pair signal pulses counted by said microprocessor within a receive window of approximately one millisecond following a zero crossing detect, and control a circuit which controls the electrical appliance.