A vehicle power transmitting and receiving control device, applied to a vehicle including an on-vehicle power storage device that transmits and receives power to and from an external power supply device and a communication unit that performs bidirectional communication to transmit and receive the power, includes a determination unit that determines, when an abnormality occurs in the bidirectional communication performed before transmitting and receiving the power, whether or not to continue the bidirectional communication in accordance with a content of the abnormality.

Either one of a communication device and a communication device comprises a direct current power supply configured to generate a direct current for serial communication from alternating current power supplied from an alternating current power supply through a power line and a common line and pass the generated direct current through a current loop. Either the communication device or the communication device comprises an adjuster configured to adjust the impedance between a signal line and the common line based on the voltage between the signal line and the common line (530).

Embodiments of methods and systems for supporting coexistence of multiple technologies in a Power Line Communication (PLC) network are disclosed. A long coexistence preamble sequence may be transmitted by a device that has been forced to back off the PLC channel multiple times. The long coexistence sequence provides a way for the device to request channel access from devices on the channel using other technology. The device may transmit a data packet after transmitting the long coexistence preamble sequence. A network duty cycle time may also be defined as a maximum allowed duration for nodes of the same network to access the channel. When the network duty cycle time occurs, all nodes will back off the channel for a duty cycle extended inter frame space before transmitting again. The long coexistence preamble sequence and the network duty cycle time may be used together.

The present disclosure concerns a system for driving a Venetian blind comprising a blind assembly which comprises a Venetian blind, an electric motor for actuating the movement of said Venetian blind and first electronic means configured to generate a drive signal for driving said electric motor; a control unit having drive means for driving the movement of said Venetian blind, a power source for generating a current signal to power said electric motor and second electronic means that are in signal communication with said drive means and with said power source for controlling said electric motor; a two-wire power line disposed between said control unit and said blind assembly to power said electric motor with said current signal and the first electronic means are in signal communication with said second electronic means via said two-wire power line. The system is characterized in that the first electronic means are configured to generate a first data signal identifying the state of said electric motor and to detect a current signal in said two-wire power line identifying the current value absorbed by said electric motor; said second electronic means are configured to receive said first data signal and to detect said current signal, said second electronic means are configured to condition said first data signal and said current signal to thereby generate a second data signal; said first electronic means are configured to receive said second data signal and to condition said second data signal and said current signal, said drive signal being generated as a function of said second data signal.

A power line communication method for realizing data communication between at least one first or sending power line communication partner device and at least one second or receiving power line communication partner device. The method checks transmission conditions of a plurality of possible communication channels, thereby generating transmission condition data descriptive for the communication conditions of the respective possible communication channels. Additionally, communication conditions of the plurality of possible communication channels are selected as actual communication conditions based on the transmission condition data.

The present technique relates to a battery device, a battery management method, and an electronic apparatus that can easily manage a battery device formed with a large number of battery cells. When a battery (51) has capacitive properties (or when the equivalent circuit of the battery (51) for an AC signal at a frequency f is a capacitor (51C)), a series circuit formed with a capacitor (171) and a coil (172) (=a coil (172-1)+a coil (172-2)) is provided in parallel to the battery (51), to form a blocking filter. The capacitor (171) and the coil (172-1) form a series resonance circuit. The capacitor (51C) and the coil (172-2) form a parallel resonance circuit. The present invention can be applied to an electronic apparatus that includes a large number of battery cells, for example.

Systems and methods for efficiently allocating beacon slot among multiple nodes on multiple levels within a power line communication network are described. In various implementations, these systems and methods may be applicable to Power Line Communications (PLC). For example, a method may include performing, by a communications device, assigning beacon transmission times to nodes within the communication device's network. The assigned beacon transmission times comprise a beacon slot and frame pattern. The beacon slot and frame pattern ensure that each node does not transmit a beacon in a beacon slot that is adjacent to a beacon slot assigned to a parent or child node. A beacon transmission slot is reserved for a base node in every frame. The frames may be organized into thirty-two-frame superframes, wherein each frame comprises a base node beacon slot and four switch node beacon slots.

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.

A rechargeable battery is coupled to a power delivery unit or an external load unit. In a charging mode, the power delivery unit converts an input power to a converted voltage and/or current. A charging circuit converts the converted voltage and/or current to a charging voltage and/or current for charging the rechargeable battery. Power data is communicated between the power delivery unit and the rechargeable battery by: 1) the power delivery unit adjusting the converted voltage, wherein the power data is expressed by plural voltage levels of the converted voltage; and/or 2) the rechargeable battery adjusting a battery input current, wherein the power data is expressed by plural current levels of the battery input current. At least one of the converted voltage, the converted current, the charging voltage, or the charging current is adjusted according to the power data.

Representative implementations of devices and techniques provide communication between networked nodes operating on a communication network medium. In an implementation, a node generates a broadcast frame that includes at least a preamble and a payload. The preamble of the broadcast frame may include supplemental information. The supplemental information may be associated with one or more symbols of the preamble. The supplemental information may contain predetermined header information for use by nodes operating on the communication network medium.