A power management arrangement (10) for a device connection system 5 is described. The power management arrangement comprises a processing module (30) connected to data communication lines (35) for exchanging data with one or more peripherals (100), an interrupt interface (20) connected to interrupt channels (25) for sending an interrupt to and from one or more of the peripherals (100), and a local storage (50) connected to the processing module (30) for storing of logic operations relating to communication with and operation of the plurality of peripherals (100).

Techniques for establishing a network connection via a physical medium after exiting a low-power state. The technique includes receiving circuit configuration information for configuring a circuit for establishing a network connection via a physical medium. The technique also includes determining first redundancy information based on the circuit configuration information. The technique also includes storing the determined first redundancy information and the circuit configuration information. The technique also includes entering, by the circuit, a low-power state, and exiting the low-power state. The technique also includes determining second redundancy information based on the stored circuit configuration information after the circuit has exited the low-power state. The technique also includes comparing the second redundancy information to the first redundancy information. The technique also includes detecting an error based on the comparing. The technique also includes outputting an indication of the detected error.

A network system includes at least one transmission path and a plurality of terminal devices each connected to the transmission path. Each of the terminal devices includes a transceiver, a startup processing unit, and a switching unit. The transceiver is configured to operate either one of a first standby unit and a second standby unit according to a switching instruction. The switching unit is configured to output the switching instruction to the transceiver to operate the second standby unit when a transmission path empty period lasts for a predetermined preparation time or more after a non-designation period has lasted for a predetermined operation determination time or more.

A receiver circuit includes a feedback loop including a device. The receiver circuit also includes a register and a sequencer. The sequencer is configured to, responsive to an error signal being below a threshold value, cause the register to store a value indicative of the state of the feedback loop. The sequencer is also configured to cause the feedback loop to transition to a lower power state, and, responsive to a detected wake-up event, cause the previously stored value indicative of the state of the feedback loop to be loaded from the register into the device and enable the feedback loop.

According to one embodiment, an adapter apparatus includes a first connector conforming to the first standard, a second connector conforming to the second standard, a first transmitter and circuitry. The first transmitter transmits a first signal to a first external apparatus connected via the first connector. The first signal associates with a request to determine whether a first mode is supported by the first external apparatus. The first mode corresponds to a communication mode that conforms to a second standard via the first connector. The circuitry generates a second signal when the first external apparatus does not support the first mode. The second signal is used to make an indication representing that the first external apparatus does not support the first mode.

According to an aspect, a communication device setting apparatus, that performs setting in a plurality of switch devices, includes a setting control unit, a power supply control unit, and a setting unit. The setting control unit sequentially selects the setting contents with respect to the switch devices whose wire connection has been completed. The power supply control unit performs control to supply power to the switch devices in which the setting contents selected by the setting control unit are to be set. The setting unit performs setting according to the setting contents, which are selected by the setting control unit, in the switch devices to which power is supplied by the power supply control unit.

In one embodiment, a method includes transmitting power in a power and data distribution system comprising at least two pairs of wires, negotiating a power level between Power Sourcing Equipment (PSE) and a Powered Device (PD) in the power and data distribution system, transmitting the power at a power level greater than 100 watts, periodically checking each of the wires for a fault, and checking for an electrical imbalance at the wires.

Among other things, techniques are described for controlling power of electronic devices of a vehicle. For example, a vehicle includes a power source, a power distribution unit configured to control power to at least one electronic device from the power source, a first processor configured for communicating power commands to the power distribution unit. The power distribution unit comprises a second processor configured to execute computer executable instructions stored in computer-readable medium for carrying out operations including adjusting a power distribution from the vehicle power source to the at least one electronic device based on a power command received from the first processor.

Provided is a control device capable of reducing power consumption in a control system. The control device includes a master control unit and at least one slave control unit that is connected to the master control unit via a communication line. The master control unit includes a circuit for, upon completion of data transmission from the slave control unit via an uplink, transmitting an instruction for deactivating the uplink to the slave control unit via a downlink, as well as a circuit for, in order to obtain data from the slave control unit, transmitting an instruction for activating the uplink to the slave control unit via the downlink. The slave control unit includes a circuit for keeping the downlink active, and for activating/deactivating the uplink in accordance with an instruction from the master control unit transmitted via the downlink.

An electrical infrastructure system and method of use of the system for a vehicle. There are several electronic control units (ECU) for one or several functional units (30n) for the vehicle. The ECUs are connected through a network (32). The infrastructure system is configured to implement a state map including various operational states Sn that the vehicle can adopt. These operational states are connected by one or several transitions Tn, where the transition from one operational state to another depends on predetermined transition conditions being satisfied. The infrastructure system is configured to receive one or several input signals (34) to at least one ECU, comprising parameter values that represent events. The at least one ECU is configured to analyze the input signals with the aid of the transition conditions, to determine an operational state, and to make the operational state that has been determined available on the network (32).