Back to results
US 2010/0135310 A1Published application
Token bus communication system
AssigneeAker Subsea AS
InventorRichard H. Carter
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAker Subsea AS
InventorRichard H. Carter
Estimating the term…
In a token bus system a node with the token can transmit on the bus a packet that contains two destination addresses. One address specifies the node that should receive the data component (payload) of the transmitted packet. The other address specifies the node that should receive the token. The network protocol specifies that a node with the token must immediately transmit a packet containing just the token or a packet with token and data if it has data to send. When no data is being passed from one node to another on the network, the token may be passed from one node to the next in order. Each node will pass the token to the next highest node number. If a node has the token has some data for sending it transmits a packet with the token for the next node and data for any of the nodes. The bus system requires every node to receive all packets and process them to determine whether the token or the data (or both) is destined for that node.
A token bus communication system comprising a multiplicity of nodes connected by a common bus, wherein each node in operative communication with the bus is organized to transmit, when in possession of a token and having data to transmit, a ‘token & data’ packet which includes a payload and a header which specifies a first address identifying which node is to receive the token and a second address identifying which node is to receive the payload.
A network device for use as a node in a token bus communication network comprising a multiplicity of nodes connected by a common bus, wherein the network device is organized to transmit, when in possession of a token and having data to transmit, a ‘token & data’ packet which includes a payload and a header which specifies a first address identifying which node is to receive the token and a second address identifying which node is to receive the payload.
A method of operating a token bus communication network comprising a multiplicity of nodes connected by and in operative communication with a common bus, comprising:
Dependencies are inferred from the claim text.