Aspects of the subject disclosure may include, for example, a transmission system having a coupling device, a bypass circuit, a memory and a processor. The coupling device can facilitate transmission or reception of electromagnetic waves that propagate along a surface of a transmission medium. The memory can store instructions, which when executed by the processor, causes the processor to perform operations including restarting a timer to prevent the bypass circuit from disabling the transmission or reception of electromagnetic waves by the coupling device. Other embodiments are disclosed.

Systems and methods are provided for optimizing power consumption for power line communication (PLC). An example system may include a coupler that connects the system to a power line; an analog front end (AFE) for handling communications over the power line via the coupler; and a processor for controlling power consumption of the AFE. The processor may determine information regarding one or more control parameters of the analog front end (AFE), the information relating to powerline communications (PLC) over the power line; and based on the information, sets or adjusts the one or more control parameters of the analog front end (AFE), to control power consumption of the analog front end (AFE) during the powerline communications (PLC) over the power line. The analog front end (AFE) may then transmit or receive data over the power line using powerline communications (PLC), based on the one or more control parameters.

The present invention is to provide a power line communication adapter capable of being freely assembled by accessories thereof, which includes an anti-noise device having a first male plug for receiving a power line communication signal from a power outlet, a first female socket for connecting the first male plug with an electrical equipment through a filter module, and a first adapting port connected to the first male plug, such that noise generated by the electrical equipment device can be filtered by the filter module without interfering the power line communication signal; and a power line communication device having a power line communication module along with a second adapting port connected thereto such that, when the first and second adapting ports are connected with each other, the power line communication device and the anti-noise device are combined into an anti-noise adapter for receiving and transmitting the power line communication signal.

A coupling circuit for power line communications includes a coupling transformer having first and second mutually coupled windings, with the first winding connectable to a power line. The second winding includes a pair of intermediate taps with one or more tuning inductor therebetween. The inductor or inductors are set between a first portion and a second portion of the second winding of the coupling transformer. A switch member is provided coupled with the inductor. The switch member is selectively actuatable to short-circuit the inductor.

A circuit, system and method for controlling electrical power to a load, the circuit has a controller with power supply input nodes and a controller data input node. Two power supply input terminals supply electrical power to the circuit. A digital control signal pre-processing unit couples one of the power supply input terminals to the controller data input node. The digital control signal pre-processing unit has a capacitor arranged to block voltage biasing resulting from power supplied across electrical power supply input terminals from being supplied to the controller data input node. The digital control signal pre-processing unit is arranged to generate positive and negative voltage impulses in response to corresponding rising and falling edges of a digital control signal provided at the power supply input terminals. The digital control signal pre-processing unit is further arranged to generate a revised version of the digital control signal without the voltage biasing.

A slave control device receives a communication signal from a master control device, and controls loads according to the received communication signal. A modulator superimposes the communication signal from the master control device on power source lines, and a demodulator demodulates the communication signal superimposed on the power source lines and supplies the demodulated communication signal to the slave control device. The modulator is provided on power source lines on a battery side, and the demodulator is provided on the power source lines on a load side. The modulator superimposes the communication signal on the power source lines which are on a side closer to the loads with respect to the modulator among the power source lines.

Aspects of the subject disclosure may include, for example, a transmission system having a coupling device, a bypass circuit, a memory and a processor. The coupling device can facilitate transmission or reception of electromagnetic waves that propagate along a surface of a transmission medium. The memory can store instructions, which when executed by the processor, causes the processor to perform operations including restarting a timer to prevent the bypass circuit from disabling the transmission or reception of electromagnetic waves by the coupling device. Other embodiments are disclosed.

Audio Frequency Load Control (AFLC) signal processing electronics added to a power factor correction (PFC) unit allowing the AFLC system to operate without the need of large and heavy passive bypass or blocking filters at the PFC installations. The AFLC signal processing electronics a first group of additional electronics tuned to the AFLC frequency for detecting the AFLC carrier signal; and a second group of additional electronics for driving an AFLC impedance switch that is connected in parallel with an AFLC impedance. The AFLC impedance is connected in series with the PFC capacitors, and is sufficiently large to offer significant impedance in series with the PFC capacitors that allows the AFLC signal to bypass the PFC unit.

Systems and methods for designing, using, and/or implementing hybrid communication networks are described. In various embodiments, these systems and methods may be applicable to power line communications (PLC). For example, one or more of the techniques disclosed herein may include methods to coordinate medium-to-low voltage (MV-LV) and low-to-low voltage (LV-LV) PLC networks when the MV-LV network operates in a frequency subband mode and the LV-LV network operates in wideband mode (i.e., hybrid communications). In some cases, MV routers and LV routers may have different profiles. For instance, MV-LV communications may be performed using MAC superframe structures, and first-level LV to lower-level LV communications may take place using a beacon mode. Lower layer LV nodes may communicate using non-beacon modes. Also, initial scanning procedures may encourage first-to-second-level LV device communications rather than MV-to-first-level LV connections.

A main power line (+ and lines) is coupled to a power supply, for example a car battery, grounded to a vehicle chassis. Positive and negative main power lines are coupled to a power line gateway module, and spliced to carry power for a segment, until receiving, by splices, RF power line communcations. The main power lines, now carrying power and RF power line communications are then coupled to remote modules. RF power line communication carries signal from the power line gateway module to a impedance matching network or a transformer are used to match impedances.