A gateway for a vehicle communication system is configured to forward a payload message from a first node of a first fieldbus system to a second node of a second fieldbus system, wherein the first and the second fieldbus systems are different. The gateway is configured to synchronize a first clock in the first node with a second clock in the second node.

An operation method of a switch apparatus in an Ethernet-based vehicle network, includes: receiving a first frame including original data from an end node; generating a second frame including the original data; duplicating the original data to generate duplicated data; and generating a third frame including the duplicated data and an indicator indicating that the third frame includes the duplicated data.

A gateway apparatus includes a first network controller, a second network controller, and a time synchronization control unit. The first network controller has a first timer time-synchronized with nodes within a first network domain. The second network controller has a second timer time-synchronized with nodes within a second network domain. The time synchronization control unit includes a processor configured to store the observed times of the switching points of synchronized time slots within the first network domain, based on system time within the second network domain, and adjusts the rate of the second timer based on a comparison of a time difference between the successive observed times and a nominal length of the time slots.

A method in which the propagation times of a target network are simulated in an actual network, wherein the topology of the target network includes a number of senders and a number of receivers, and wherein the topology of the actual network includes one or more of the senders and receivers. A path between a first sender and a first receiver in the topology of the actual network differs from the path between the first sender and the first receiver in the topology of the target network, wherein in the actual network at least one first message of the first sender is received through a first network interface by a gateway having at least two network interfaces, is delayed by a delay, and is sent through a second network interface on a path to the first receiver.

A receive buffer of the type that receives information at regular time slots and is required to indicate any status changes to a micro control unit (MCU), the receive buffer including: a slot status field for storing slot status information at each timeslot for the receive buffer; a receive interrupt flag for sending a signal to the MCU for indicating a change of the slot status field on receipt of the information at each timeslot; characterized in that the receive buffer also includes: an empty slot recognition bit for determining if an empty slot is received and generating an indicator thereof, wherein the indicator is passed to the MCU instead of the useless empty slot status field.

A method operates an onboard power supply system in a motor vehicle. The onboard power supply system has a master controller and a slave controller, in which the master controller communicates with the slave controller via a subsidiary bus system and a further onboard power supply system component via a main bus system. Present requests are received in the slave controller and in response to the present requests, performing one of: putting the slave controller into an operating mode and switching the master controller to a transmission mode, in which the master controller coordinates communication between the slave controller and the onboard power supply system component; or putting the slave controller into a sleep mode and switching the master controller to an undertaking mode, in which the master controller responds to queries from the onboard power supply system component to the slave controller.

A connection device for connecting to all bus systems of a motor vehicle is provided for communicating between different vehicle systems and is included in a gateway for the motor vehicle. A computing device designed for controlling the exchange of data between the bus systems is also included in the gateway. The gateway additionally has at least one communication device for wireless Communication in a network having at least one device external to the motor vehicle and the computing device is designed for controlling the data exchange between the several bus systems and the network.

A method includes capturing a first sample data signal, the first sample data signal being associated with a first time domain and storing a first value associated with the first sample data signal in a first element position of a first memory buffer. The method also includes generating, in response to a completion of a sampling window and in response to a request from a data consumer, a snapshot of values stored in the first memory buffer and storing the snapshot of values in a data consumer memory. The method also includes extracting, by the data consumer in a second time domain, at least one value from the snapshot of values and calculating, by the data consumer, at least one of a motor position of a motor and a motor velocity of the motor using the at least one value from the snapshot of values.

An architecture for transmitting data within an avionics system fitted to a vehicle, the architecture comprising a first field bus and a first avionics bus. According to the invention, the architecture comprises at least two primary channels each comprising: a primary field interface enabling communication between each primary channel via the first field bus, the field interfaces being interconnected with the first field bus; and a first avionics interface compatible with the first avionics bus. The architecture comprises at least one primary computer provided with a second avionics interface in communication via the first avionics bus with only one first avionics interface among the first avionics interfaces.

A system for data transmission in a motor vehicle includes a central control unit, a first zonal control module, and a first LIN bus. The central control unit includes at least a first LIN master and a second LIN master. The first zonal control module is operably coupled to the central control unit via a first data connection. The first LIN bus is operably coupled to the first zonal control module. A first LIN slave connected to the LIN bus is assigned to the first LIN master, and a second LIN slave connected to the LIN bus is assigned to the second LIN master.