Multiplex transmission system for use in vehicles
First Claim
1. A multiplex communication system for use in a vehicle and having a plurality of communication nodes which are connected to a common multiplex transmission passage and arranged in such a manner that a frame is transceived between said communication nodes so as to exchange information for the purpose of controlling the operation of the vehicle, the system comprising:
- arbitrating means for arbitrating the transmissions of said frames of the nodes in accordance with information about priority given to said frame in a normal operation;
detection means for detecting the occurrence of a failure in a certain communication node or the common multiplex transmission passage;
preparation means for preparing a failure report frame showing the detected failure occurrence while giving a higher priority to said frame than in the normal operation;
transmitting means for transmitting said failure report frame to said transmission passage; and
execution means provided for each of said communication nodes, said execution means performing a control corresponding to the failure after it has received said failure report frame transmitted by said transmitting means.
1 Assignment
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Accused Products
Abstract
A system for reporting the occurrence of a failure in a multiplex communication network system in which a plurality of communication nodes are connected to one another and information is exchanged by transceiving frames. In the system, if a failure takes place in any of the communication nodes, the frame which reports the failure occurrence is transmitted to the network while being given the top priority.
19 Citations
11 Claims
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1. A multiplex communication system for use in a vehicle and having a plurality of communication nodes which are connected to a common multiplex transmission passage and arranged in such a manner that a frame is transceived between said communication nodes so as to exchange information for the purpose of controlling the operation of the vehicle, the system comprising:
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arbitrating means for arbitrating the transmissions of said frames of the nodes in accordance with information about priority given to said frame in a normal operation; detection means for detecting the occurrence of a failure in a certain communication node or the common multiplex transmission passage; preparation means for preparing a failure report frame showing the detected failure occurrence while giving a higher priority to said frame than in the normal operation; transmitting means for transmitting said failure report frame to said transmission passage; and execution means provided for each of said communication nodes, said execution means performing a control corresponding to the failure after it has received said failure report frame transmitted by said transmitting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification