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AssigneeFTS Computer Technik GmbH
InventorHermann Kopetz
Estimating the term…
A communication method for transmitting Ethernet messages in a distributed real-time system in which a plurality of network node computers, e.g. four network node computers (111, 112, 113, 114), each comprising at least one communication controller (121, 122, 123, 124), are linked via a communication system comprising one or more communication channels (109), one or more intelligent star couplers (101, 102) being disposed in each communication channel. According to the invention, a distinction is made between conventional Ethernet messages (ET messages) and time-triggered Ethernet messages (TT messages), the TT messages being transported with an a priori known constant delay time (Δ) between transmitter and receiver, and, when there is a time conflict between ET and TT messages, the transport of the ET message that is in conflict being delayed or aborted in order to be able to transport the TT message with the constant delay time (Δ). Furthermore, the invention relates to a corresponding communication system and a star coupler for such a communication system.
A communication method for the transmission of Ethernet messages in a distributed real-time system in which a plurality of network node computers, each of which comprises at least one communication controller, are connected via a communication system that comprises one or more communication channels, one or more intelligent star couplers being disposed in each communication channel, and a distinction being made between conventional Ethernet messages (ET messages) and time-triggered messages (TT messages), and
A star coupler for a communication system for the transmission of Ethernet messages in a distributed real-time system comprising a plurality of network node computers, each of which comprises at least one communication controller, the communication system comprising one or more communication channels via which the network node computers are connected to each other, and one or more intelligent star couplers being disposed within each communication channel, wherein it is equipped to distinguish between conventional Ethernet messages (ET messages) and time-triggered Ethernet messages (TT messages) and to transport the TT messages having an a priori known constant delay time (Δ) between transporter and receiver, and wherein the constant delay time (Δ) is selected in such a way that within this delay time (Δ) the output channels of the star coupler can be cleared for the transport of the incoming TT message, whereby, when there is a time conflict between ET and TT messages, the ET message in conflict is aborted in order to be able to transport the TT message with the constant delay time (Δ).
A star coupler for a communication system for the transmission of Ethernet messages in a distributed real-time system comprising a plurality of network node computers, each of which comprises at least one communication controller, the communication system comprising one or more communication channels via which the network node computers are connected to each other, and one or more intelligent star couplers being disposed within each communication channel, wherein it is equipped to distinguish between conventional Ethernet messages (ET messages) and time-triggered Ethernet messages (TT messages) and to transport the TT messages having an a priori known constant delay time (Δ) between transporter and receiver, whereby, when there is a time conflict between ET and TT messages, the ET message in conflict is aborted in order to be able to transport the TT message with the constant delay time (Δ),
Dependencies are inferred from the claim text.