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US 7,158,488 B2Granted
Communication control apparatus and method
AssigneeYamaha Corporation
InventorJunichi Fujimori
Life of this patent
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AssigneeYamaha Corporation
InventorJunichi Fujimori
Estimating the term…
One or more nodes on a communication network are selected and set as one node group. In each of the nodes, group identification information representing the node group to which the node belongs is stored in advance. The group identification information is attached to the header of a data packet to be transmitted, so that nodes constituting a node group that should commonly receive data can be readily identified by comparing the group identification information imparted to the transmitted data packet and the group identification information stored in each receiving node. Given node can choose to become a node of a particular function, such as a clock master node, in which case control is performed to delete, from the node group, a node having so far played the role of the node of the particular function in such a manner that there exists only one node of the particular function per node group.
A communication system having a communication network and a plurality of nodes connected to the communication network and in which audio data are transferred between the plurality of nodes with respective sampling clocks of the plurality of nodes synchronized via a synchronization signal packet, said communication system comprising:
A communication control apparatus for inclusion in a given one of a plurality of nodes connected to a communication network in a communication system in which audio data are transferred between the plurality of nodes with respective sampling clocks of the plurality of nodes synchronized via a synchronization signal packet transmitted by any one of the plurality of nodes set as a clock master node, the plurality of nodes being grouped into a plurality of node groups, said communication control apparatus comprising:
A communication control apparatus for inclusion in a given one of a plurality of nodes connected to a communication network in a communication system in which audio data are transferred between the plurality of nodes with respective sampling clocks of the plurality of nodes synchronized via a synchronization signal packet transmitted by any one of the plurality of nodes set as a clock master node, the plurality of nodes being grouped into a plurality of node groups, said communication control apparatus comprising:
A communication control method for execution in a communication system having a communication network and a plurality of nodes connected to the communication network and in which audio data are transferred between the plurality of nodes with respective sampling clocks of the plurality of nodes synchronized via a synchronization signal packet, said plurality of nodes being grouped into a plurality of groups, said method comprising:
A communication control method for execution in a given one of a plurality of nodes connected to a communication network in a communication system in which audio data are transferred between the plurality of nodes with respective sampling clocks of the plurality of nodes synchronized via a synchronization signal packet transmitted by any one of the plurality of nodes set as a clock master node, the plurality of nodes being grouped into a plurality of node groups, said communication control method comprising:
A communication control method for execution in a given one of a plurality of nodes connected to a communication network in a communication system in which audio data are transferred between the plurality of nodes with respective sampling clocks of the plurality of nodes synchronized via a synchronization signal packet transmitted by any one of the plurality of nodes set as a clock master node, the plurality of nodes being grouped into a plurality of node groups, said communication control method comprising:
Dependencies are inferred from the claim text.