Information transmitting device and information transmitting method for watercraft
First Claim
1. A multiple node network comprising a management node, a plurality of terminal nodes, and a bus arranged to connect and provide communication among the terminal nodes and the management node, the management node sending an individual information transfer demanding frame to each terminal node, at least one terminal node adapted to respond to the management node with an individual information response frame, the management node adapted to allocate a network address to each terminal node through a network address notification frame, at least one terminal node capable of allocating an arbitrary network address upon receiving no allocated network address from the management node when the terminal node is attempting to join the network and the terminal node determining that the management node has a fault, the arbitrary network address being converted to a network address by the terminal node when no other terminal node has a network address identical to the arbitrary address.
1 Assignment
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Accused Products
Abstract
A multiple node network includes a plurality of terminal nodes. A management node at least initially manages the terminal nodes. A bus connects the respective terminal nodes and the management node to one another. The respective terminal nodes and the management node communicate with one another using the bus. The management node requests identification codes from each terminal node. Each terminal node responds with an individual identification code and then receives a physical address from the management node to establish communication. When a fault in the management node is detected while a terminal node is trying to enter communication, the terminal node assigns an arbitrary address to establish communication if the arbitrary address is not identical to any other terminal node address or after a predetermined amount of time has elapsed.
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Citations
34 Claims
- 1. A multiple node network comprising a management node, a plurality of terminal nodes, and a bus arranged to connect and provide communication among the terminal nodes and the management node, the management node sending an individual information transfer demanding frame to each terminal node, at least one terminal node adapted to respond to the management node with an individual information response frame, the management node adapted to allocate a network address to each terminal node through a network address notification frame, at least one terminal node capable of allocating an arbitrary network address upon receiving no allocated network address from the management node when the terminal node is attempting to join the network and the terminal node determining that the management node has a fault, the arbitrary network address being converted to a network address by the terminal node when no other terminal node has a network address identical to the arbitrary address.
- 15. A communication method between a plurality of nodes in a network, the nodes including terminal nodes and a management node configured to at least initially manage the terminal nodes, the method comprising the management node sending an individual information transfer demanding frame to one or more of the terminal nodes, the one or more terminal nodes responding to the management node with an individual information response frame, the management node allocating a network address the responding terminal node through a network address notification frame, at least one of the terminal nodes applying an arbitrary address upon detection that the management node has a fault when a terminal node is trying to join the network, converting the arbitrary address to an operating network address when no response from the management node is received and no other terminal node has been assigned the arbitrary address.
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18. A communication method between a plurality of nodes in a network, the nodes including terminal nodes and a management node configured to assign network addresses to each of the terminal nodes in normal operation, the method comprising:
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determining a failure by the management node to assign a network address to one of the terminal nodes;
selecting an arbitrary network address for said one terminal node;
determining whether the arbitrary network address is identical to a network address currently used by one of the other terminal nodes; and
using the arbitrary network address as the network address for said one terminal node if the arbitrary network address is not identical to a network address used by one of the other terminal nodes. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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- 29. A communication system for a vehicle comprising an engine, at least one sensor detecting an operating condition of the vehicle, and a network having a plurality of terminal nodes and a management node, at least one terminal node communicating with the engine and at least another one of the terminal nodes communicating with at least the sensor, the management node adapted to assign a network address to each terminal node when the terminal node is attempting to join the network, each terminal node capable of determining whether the management node has failed to assign the terminal node a network address and assigning itself a network address that is not currently used by any other terminal node active on the network.
Specification