Provided are a wire harness and a communication relay method with which effects such as reduction in the relay processing load of an in-vehicle device or improvement in the scalability of an in-vehicle device can be expected. A wire harness according to an embodiment includes a circuit board detachably mountable to an in-vehicle device, a plurality of communication lines connected to the circuit board, and a relay unit provided on the circuit board and configured to relay communication between the plurality of communication lines and to relay communication between the communication lines and the in-vehicle device.

A module for asynchronous differential serial communication on a bus is disclosed. The module is connectable to the bus in a first connecting mode, wherein a non-inverting terminal of the module is connected to a non-inverted bus signal line and an inverting terminal is connected to an inverted bus signal line, and a second connecting mode given by an inverse of the first connecting mode. The module includes a detector determining the connecting mode based on the binary state of a start bit of a reception signal provided by a transceiver of the module based on a received communication signal and a binary state of a first bit of a reference signal corresponding to a voltage difference between the voltages of the signals received via the non-inverted and the inverted terminal during reception of this communication signal.

The present disclosure provides a CAN network topology for an HVAC communication system. The CAN network topology comprises at least three primary nodes having a predetermined termination impedance and a plurality of end nodes coupled to each primary node, wherein the predetermined termination impedance is set to the optimal setting of 180 ohms. Advantageously, the present disclosure eliminates the need for physically setting CAN node terminations. This reduces install time and removes variability of the install settings. Further, removing this variability reduces the risk for post-installation call-backs due to incorrect system setup. The present disclosure optimizes signal slew rate, which improves signal reliability.

An electronic controller of a restraint control system for a vehicle comprises an electronic control unit including a first serial interface. The electronic controller also comprises a communications controller including a second serial interface and a plurality of PSI5 (Peripheral Sensor Interface 5) digital communications interfaces. Each of the first and second serial interfaces are Serial Peripheral Interfaces (SPI) in direct communications with one another, and the digital communications interfaces are each configured to communicate with a remote sensor. The communications controller is configured to transmit a voltage sync pulse to each of the remote sensors via the PSI5 digital communications interfaces in response to a synchronization command received from the electronic control unit via the serial interconnection. The voltage sync pulses on each of the PSI5 interfaces may be staggered and non-overlapping to reduce EMI production and to reduce the current load of the electronic controller.

A controller area network (CAN) transmitter includes an output stage circuit including a CANH port and a CANL port, and an input stage circuit configured to receive an input signal. The input signal is configured to indicate whether the output stage circuit is to provide dominant or recessive states. The CAN transmitter includes a cascode circuit configured to provide output signals on the output stage circuit to provide dominant or recessive states based on the input signal. The CAN transmitter includes a switch circuit configured to, based upon the input signal, switch the cascode circuit on and off.

A network system includes a first network through which a frame of a first type is transmitted in accordance with a first communication protocol and includes a second network in which a frame of a second type is transmitted in accordance with a second communication protocol. A gateway device is connected to the first network and the second network. The gateway device sequentially receives frames of the first type from the first network and determines whether to transmit data regarding the received frames of the first type to the second network. The gateway device transmits, to the second network, a frame of the second type including data regarding a plurality of the frames of the first type determined to be transmitted to the second network when a condition relating to a number of frames of the first type received by the gateway device is satisfied.

A vehicle anomaly detection server includes: a communicator that communicates with a vehicle to receive a log of an in-vehicle network in the vehicle; a processor; and a memory including at least one set of instructions that, when executed by the processor causes the processor to perform operations including: selecting, when information indicating that an anomaly is occurring to a first vehicle among vehicles is obtained by the processor, an anomaly-related vehicle from among the vehicles based on the anomaly, the first vehicle being the vehicle that communicates with the communicator; transmitting, to the anomaly-related vehicle via the communicator, a first request to transmit a log of an in-vehicle network in the anomaly-related vehicle; and determining whether an anomaly is occurring to the anomaly-related vehicle, based on information indicated by the log transmitted from the anomaly-related vehicle and received by the communicator.

A system for an autonomous vehicle includes sensors, a time sensitive network switch, and a sensor interface. The sensors are configured to generate sensor data. The time sensitive network switch is configured to receive the sensor data and an elevated voltage.

A relay device for vehicle communication includes: a receiving section that receives data for vehicle communication; a relay processing section that transfers the data received at the receiving section to a bus; a storing processing section that temporarily stores the data received at the receiving section; and a data packing section that collects a plurality of the data stored at the storing processing section, and converts the plurality of data into single data for verification.

A frame transmission prevention apparatus connected to a network of a network system including a plurality of electronic control units communicating with one another via the network is provided. The apparatus includes a processor and a memory. The memory includes at least one set of instructions that causes the processor to perform processes when executed by the processor. The processes include receiving a first frame from the network and switching whether to perform a first process for preventing transmission of the first frame on the basis of management information indicating whether prevention of transmission of a frame is permitted if the first frame satisfies a first condition.