Information communication system, device and method

• US 7,443,875 B2
• Filed: 10/28/2004
• Issued: 10/28/2008
• Est. Priority Date: 06/28/2004
• Status: Active Grant

• Current Assignee: Yamaha Marine Kabushiki Kaisha
• Original Assignee: Yamaha Marine Kabushiki Kaisha
• Inventors: Okuyama, Takashi
• Primary Examiner(s): Jung; Min
• Application Number:
  US10/975,327
• Publication Number:
  US 20050286539A1
• Time in Patent Office: 1,461 Days
• Field of Search: 370445-448, 370/458, 370/400, 370/461
• US Class Current: 370/445
• CPC Class Codes: H04L 12/413 with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD]
• CPC Class Codes: H04L 12/417 with deterministic access, e.g. token passing
• CPC Class Codes: H04L 2012/40286 the transportation system being a waterborne vessel

Abstract

An information communication device for communicating information among a plurality of components includes a plurality of nodes, each being of a particular node type that corresponds to a particular transmission slot of a plurality of transmission slots. Each transmission slot is formed from a communication cycle that has a prescribed time period. The plurality of transmission slots are synchronized with one another. The communication cycle includes a static transmission area and a dynamic transmission area, where the static transmission area includes the plurality of transmission slots that correspond to the node types. The dynamic transmission area is adapted to transmit information. Each of the plurality of nodes includes a conflict detector that determines when a transmission conflict occurs as a result of nodes of the same node type beginning transmission using the same transmission slot. Each of the plurality of nodes also includes a transmission area setter for changing the transmission slots in the static transmission area based upon information transmitted in the dynamic transmission area.

Claims

1. An information communication device for communicating information among a plurality of components, the information communication device comprising:

a plurality of nodes, each being of a particular node type that correspond to a particular transmission slot of a plurality of transmission slots, each transmission slot formed from a communication cycle having a prescribed time period, said plurality of transmission slots being synchronized with one another;

said communication cycle further comprising a static transmission area and a dynamic transmission area, said static transmission area including the plurality of transmission slots that correspond to the node types, and the dynamic transmission area being adapted to transmit information indicative of a transmission conflict between at least two nodes; and

each of the plurality of nodes comprising a conflict detector that determines when the transmission conflict occurs as a result of nodes of the same node type beginning transmission using the same transmission slot, and a transmission area setter for changing at least one of the transmission slots in the static transmission area from a first assigned transmission slot to a second assigned transmission slot based upon information transmitted in the dynamic transmission area.

2. The information communication device of claim 1, wherein the plurality of components comprises a plurality of outboard motors, remote control levers, and key switches of a boat, and the plurality of nodes includes at least one node for controlling one or more engines of one or more of the outboard motors, nodes for the remote control levers, and nodes for key switches.

3. The information communication device of claim 1, wherein the transmission area setter is in communication with a selection operator which can be selectively operated, said transmission area setter comprising a discrimination information transmitter adapted to transmit discrimination information to the dynamic transmission area when both the conflict detector detects said transmission conflict and the selection operator is operated.

4. The information communication device of claim 3, wherein the transmission area setter changes transmission slots in the static transmission area when the conflict detector detects the transmission conflict and when the discrimination information transmitted from a selected node of the dynamic transmission area is received.

5. The information communication device of claim 3, wherein the selection operator comprises a switch.

6. The information communication device of claim 1, wherein said transmission area setter automatically changes the transmission slots in the static transmission area.

7. The information communication device of claim 1, wherein said information is automatically transmitted in the dynamic transmission area based upon said transmission conflict.

8. An information communication device for communicating information among a plurality of components, the information communication device comprising:

a plurality of nodes, each being of a particular node type that corresponds to a particular transmission slot of a plurality of transmission slots, each transmission slot formed from a communication cycle having a prescribed time period, said plurality of transmission slots being synchronized with one another, said communication cycle further comprising a static transmission area and a dynamic transmission area, said static transmission area having the plurality of transmission slots that correspond to the node types, and the dynamic transmission area being adapted to transmit information indicative of a transmission conflict between at least two nodes; and

a hub providing communication between at least two nodes, said hub comprising a conflict detector for detecting the transmission conflict that occurs when nodes of the same node type transmit using the same transmission slot, said hub further comprising a discrimination information transmitter for transmitting discrimination information from a connection port to a connection port node, said discrimination information transmitter adapted to transmit the discrimination information via the dynamic transmission area when the conflict detector detects said transmission conflict, each node comprising a transmission area setter for changing the transmission slot in the static transmission area when receiving the discrimination information.

9. The information communication device of claim 8, wherein the plurality of components comprises a plurality of outboard motors, remote control levers, and key switches of a boat, and the plurality of nodes includes at least one node for controlling one or more engines of one or more of the outboard motors, nodes for the remote control levers, and nodes for key switches.

10. An information communication method for communicating information over a network, the information communication method comprising:

initializing a plurality of nodes by assigning a same initial transmission slot of a plurality of transmission slots to each node, each node being of a same particular node type, each node adapted to communicate using the transmission slot, each transmission slot formed from a communication cycle having a time period, a static transmission area, and a dynamic transmission area, said static transmission area having the plurality of transmission slots;

detecting a transmission conflict between nodes of the same node type, said transmission conflict occurring as a result of nodes of the same node type beginning transmission using the same transmission slot;

providing discrimination information in said dynamic transmission area in response to said detecting; and

reassigning the transmission slot of at least one node to a different transmission slot based at least partially upon said discrimination information.

11. The information communication method of claim 10, wherein said providing discrimination information is performed after setting a switch.

12. The information communication method of claim 10, wherein said providing discrimination information is performed automatically.

13. The information communication method of claim 10, further comprising the step of communicating operational information associated with a component of a boat between at least two of the plurality of nodes using the dynamic transmission area.

14. The information communication method of claim 13, further comprising sensing the operation of the component of the boat and generating the information transmitted in the dynamic transmission area.

15. An information communication method for communicating information over a network, the information communication method comprising:

initializing a node by assigning a transmission slot of a plurality of transmission slots, the node being of a particular node type, the node adapted to communicate using the transmission slot, each transmission slot formed from a communication cycle having a time period, a static transmission area, and a dynamic transmission area, said static transmission area having the plurality of transmission slots;

detecting at the node a transmission conflict between the node and at least one other node of the same node type, said transmission conflict occurring as a result of nodes of the same node type beginning transmission using the same transmission slot;

receiving at the node discrimination information provided in said dynamic transmission area in response to said transmission conflict; and

changing the transmission slot of the node based at least partially upon said discrimination information.

16. The information communication method of claim 15, further comprising the step of communicating operational information associated with a component of a boat between at least two of the plurality of nodes using the dynamic transmission area.

17. The information communication method of claim 16, further comprising sensing the operation of the component of the boat and generating the information transmitted in the dynamic transmission area.