Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2004-12-10
2010-11-23
Abelson, Ronald (Department: 2476)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S230100, C370S231000, C370S236000, C370S398000, C370S422000, C370S240000, C370S407000, C370S425000
Reexamination Certificate
active
07839868
ABSTRACT:
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.
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Abelson Ronald
Fox Rothschild LLP
FTS Computer Technik GmbH
Ness Anton P.
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