Systems, methods, and apparatus for maintenance over an auxiliary power line are disclosed. In one or more embodiments, a disclosed method for generating and transmitting maintenance data from a unit on a vehicle comprises powering the unit by an auxiliary power line connected to the unit or a primary power line connected to the unit. The method further comprises modulating, by the unit, at least a portion of the maintenance data to generate at least one modulated signal. Further, the method comprises transmitting, from the unit, at least one modulated signal on the auxiliary power line. In one or more embodiments, the maintenance data comprises health management (HM) data, built in test (BIT) data, built in test equipment (BITE) data, and/or configuration data.

Methods and devices for wired charging and communication with a wearable device are described. In one embodiment, a symmetrical contact interface comprises a first contact pad and a second contact pad, and particular wired circuitry is coupled to the first and second contact pad to enable charging as well as receive and transmit communications via the contact pads as part of various device states.

An integrated networking scheme that enables data communication and power delivery over a single connection for a network of low power devices spread across a local area is disclosed. The integrated networking scheme provides a simplified technique to transfer data signal and power signal using a single cable with power coupling/decoupling enabled through a bias T-network with diodes, which enable multi-point power injection. A special transistor-resistor network controls the received signal spectrum. The integrated networking scheme provides a signal over power adapter attached to each low power devices in the local area network to enable coupling and decoupling of data signal and power signal. The scheme provides wide-band data communication capabilities, enables plug-and-play power and data capabilities to remote devices.

A power line communication device includes a DC power source device, a power line, and a master station that modulates a supply voltage VBUS supplied to the power line according to transmission data to be transmitted. The master station includes a modulation capacitor that is precharged with a modulation amplitude voltage, a polarity switch unit that determines a polarity of the modulation capacitor connected to the power line according to transmission data, and an inductor connected between the DC power source device and the power line.

Methods and devices for wired charging and communication with a wearable device are described. In one embodiment, a symmetrical contact interface comprises a first contact pad and a second contact pad, and particular wired circuitry is coupled to the first and second contact pads to enable charging as well as receive and transmit communications via the contact pads as part of various device states.

Disclosed herein are two-wire communication systems and applications thereof. In some embodiments, a slave node transceiver for low latency communication may include upstream transceiver circuitry to receive a first signal transmitted over a two-wire bus from an upstream device and to provide a second signal over the two-wire bus to the upstream device; downstream transceiver circuitry to provide a third signal downstream over the two-wire bus toward a downstream device and to receive a fourth signal over the two-wire bus from the downstream device; and clock circuitry to generate a clock signal at the slave node transceiver based on a preamble of a synchronization control frame in the first signal, wherein timing of the receipt and provision of signals over the two-wire bus by the node transceiver is based on the clock signal.

A correct commutation is realized even if a communication error occurs due to a change in an actuator drive current. An electronic control unit that includes a communication section outputting a control signal and that can transmit the control signal to an actuator connected to the electronic control unit via a power line, includes an actuator operation detection section. When the actuator operation detection section detects an actuator operation, the communication section retransmits the control signal at timing of detecting the actuator operation.

A system for securing a Wi-Fi network includes a power source that transmits an electric current along at least one power line, a power line communication (PLC) module in electrical communication with the power source via the at least one power line with the PLC module being configured to modulate the electric current to include a power line communication that contains a Wi-Fi network authentication key, and a control module in electrical communication with and downstream from the PLC module via the at least one power line with the control module being configured to extract the power line communication from the electric current and utilize the Wi-Fi network authentication key to access the Wi-Fi network.

Methods and devices for wired charging and communication with a wearable device are described. In one embodiment, a symmetrical contact interface comprises a first contact pad and a second contact pad, and particular wired circuitry is coupled to the first and second contact pad to enable charging as well as receive and transmit communications via the contact pads as part of various device states.

Disclosed herein are two-wire communication systems and applications thereof. In some embodiments, a slave node transceiver for low latency communication may include upstream transceiver circuitry to receive a first signal transmitted over a two-wire bus from an upstream device and to provide a second signal over the two-wire bus to the upstream device; downstream transceiver circuitry to provide a third signal downstream over the two-wire bus toward a downstream device and to receive a fourth signal over the two-wire bus from the downstream device; and clock circuitry to generate a clock signal at the slave node transceiver based on a preamble of a synchronization control frame in the first signal, wherein timing of the receipt and provision of signals over the two-wire bus by the node transceiver is based on the clock signal.