A computerized apparatus configured for high-speed data transactions between components thereof. In one embodiment, the computerized apparatus includes a high-speed data bus apparatus; a user interface apparatus in data communication with the high-speed data bus apparatus configured to enable a user to interact with the computerized apparatus; an input/output apparatus in data communication with the high-speed data bus apparatus and configured to interchange data with one or more devices external to the computerized apparatus; a mass storage apparatus in data communication with the high-speed data bus apparatus and configured to store data; a computer program for use by the high-speed data bus apparatus; and a substantially unified data interface in data communication with each of the user interface apparatus, the input/output apparatus, the mass storage apparatus, and the high-speed data bus apparatus.

A communication apparatus, for relaying a time synchronizing signal between a master and a slave that transmit PTP (Precision Time Protocol) signals, stores a first time of the communication apparatus at a point in time that the communication apparatus receives a first time synchronizing signal addressed to the slave, obtains a second time of the master at a point in time that the first time synchronizing signal is transmitted from the master, from the first time synchronizing signal or the like, obtains an amount of offset that is a difference between a reference time of the master and a reference time of the communication apparatus, using the first time as a time of the slave and the second time as the time of the master in a time synchronizing algorithm of the PTP, and corrects the reference time of the communication apparatus using the amount of offset.

An EtherCAT packet forwarding system with distributed clocking is provided. The system comprises a master device and a plurality of slaves. The master comprises a processing port and a forward port for being respectively coupled to the at least two Ethernet ports of the master device in a redundant ring topology. The slaves comprise an internal clock indicating a current time, and a slave memory comprising a processing timestamp variable, a forwarding timestamp variable, a temporary timestamp variable and a copy-direct bit.

Synchronisation methods for synchronising processor nodes of an Engine Control and Monitoring System (ECaMS) for an engine. A method comprises counting, at a first acquisition integrated circuit in a first processor node of the ECaMS, a first control cycle count, and storing at the first acquisition integrated circuit a first transmission slot index. The method further comprises counting a second control cycle count and storing a second transmission slot index at a second acquisition integrated circuit in a second processor node of the ECaMS. The method also comprises transmitting a message including the first control cycle count and transmission slot index from the first to second acquisition integrated circuits, and receiving the message at the second acquisition circuit. The method also comprises synchronising the first and second processor nodes using the first and second control cycle counts and transmission slot indexes.

Engine Control and Monitoring Systems (ECaMS) for engines are disclosed. An ECaMS comprises a first processor node and a second processor node. The first processor node comprises a first acquisition integrated circuit (IC), a first output IC, and a first processor. The second processor node comprises a second acquisition IC, a second output IC, and a second processor. The first acquisition IC is connected directly to the second acquisition IC.

A relay device system is a relay device system to be installed in a vehicle, the relay device system including a wireless relay device configured to wirelessly communicate with a communication device provided outside the vehicle, a plurality of wired relay devices that are connected in a ring to the wireless relay device, and an in-vehicle network formed in a ring by a communication line connecting the wireless relay device and the plurality of wired relay devices, in which the plurality of wired relay devices each include an ECU communication unit configured to communicably connect to an ECU for controlling an on-board device installed in the vehicle, and the wireless relay device and the plurality of wired relay devices are configured to communicate with each other through the in-vehicle network, using two clockwise and counterclockwise paths.

The present disclosure relates to control systems, clock synchronization methods, controllers, node devices, and vehicles. In one example control system provided in this application, a primary controller directly sends a reference clock signal to at least one node device by using a ring network, so that the at least one node device can perform timing based on a frequency of the reference clock signal.

A computerized apparatus configured for high-speed data transactions between components thereof. In one embodiment, the computerized apparatus includes a high-speed data bus apparatus; a user interface apparatus in data communication with the high-speed data bus apparatus configured to enable a user to interact with the computerized apparatus; an input/output apparatus in data communication with the high-speed data bus apparatus and configured to interchange data with one or more devices external to the computerized apparatus; a mass storage apparatus in data communication with the high-speed data bus apparatus and configured to store data; a computer program for use by the high-speed data bus apparatus; and a substantially unified data interface in data communication with each of the user interface apparatus, the input/output apparatus, the mass storage apparatus, and the high-speed data bus apparatus.

Disclosed are an optical burst transport network, a node, a transmission method and a computer storage medium. The method comprises: measuring, by a master node, the network ring length of an OBTN, and according to a measurement result, calculating the length of a data frame, the number of time slots in the data frame, the length of the time slots and the guard interval of the time slots; according to the calculated length of the data frame, the number of time slots in the data frame, the length of the time slots and the guard interval of the time slots, sending a testing data frame and a testing control frame to a slave node to conduct frame synchronization training and time slot synchronization training; according to a result of the frame synchronization training and a result of the time slot synchronization training, sending, by the master node, a data frame and a bandwidth map to the slave node; and according to a bandwidth request sent from the node, generating, by the master node, a new bandwidth map, and sending the new bandwidth map to the slave node.

In one embodiment, a synchronized communication system includes a plurality of network devices, and clock connections to connect the network devices in a closed loop configuration, wherein the network devices are configured to distribute among the network devices a reference clock time from any selected one of the network devices.