Method and apparatus for maintaining directory services for a video transmission network
First Claim
1. A video transmission network having plurality of nodes including at least one master node, a plurality of slave nodes responsive to said master node through routers of the video transmission system, and an information directory system containing directory information, said information directory system being characterized by;
- a central directory associated with said master node, and a plurality of slave directories each associated with at least one of said slave nodes; and
directory maintenance means at said master node, said routers, and said slave nodes for controlling said information directory system through the routers to maintain information in said slave directories consistent with information in said central directory wherein said slave nodes include nodes having different characteristics and wherein said master node is provided with information on the presence of said slave nodes and their characteristics and the type of information required by said slave nodes;
wherein and said maintenance means at said master node is adapted to filter information sent to said slave directories in accordance with the requirements of the characteristics of the slave nodes to which the information is sent.
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Abstract
A video information transmission network having a plurality of nodes including at least one master node and a number of slave nodes responsive to master node; as well as an information directory containing directory information. The information directory includes a central directory associated with the master node, and a number of slave directories associated with the slave nodes. There is a directory maintenance updater associated with the information directory adapted to maintain information in the slave directories consistent with information in the central directory.
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Citations
20 Claims
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1. A video transmission network having plurality of nodes including at least one master node, a plurality of slave nodes responsive to said master node through routers of the video transmission system, and an information directory system containing directory information, said information directory system being characterized by;
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a central directory associated with said master node, and a plurality of slave directories each associated with at least one of said slave nodes; and directory maintenance means at said master node, said routers, and said slave nodes for controlling said information directory system through the routers to maintain information in said slave directories consistent with information in said central directory wherein said slave nodes include nodes having different characteristics and wherein said master node is provided with information on the presence of said slave nodes and their characteristics and the type of information required by said slave nodes;
wherein and said maintenance means at said master node is adapted to filter information sent to said slave directories in accordance with the requirements of the characteristics of the slave nodes to which the information is sent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a video transmission network having a number of nodes including at least one master node, a plurality of routers, and a plurality of slave nodes responsive to said master node through said routers, an information directory system containing directory information, said information directory system comprising:
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a central directory associated with said master node, and a plurality of slave directories associated with said slave nodes; and directory maintenance means in said routers associated with a central directory and said plurality of slave directories of said information directory system to maintain information in said slave directories consistent with information in said central directory wherein said slave nodes include nodes having different characteristics and wherein said master node is provided with information on the presence of said slave nodes and their characteristics and the type of information required by said slave nodes; and
wherein said maintenance means for said master node is adapted to filter information sent to said slave directories in accordance with the requirements of the characteristics of the slave nodes to which the information is sent. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. In a video transmission network having a plurality of nodes including at least one master node and a plurality of slave nodes connected to the master node through routers, the method comprising:
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providing a central directory associated with the master node and a plurality of slave directories associated with the slave nodes; maintaining network configuration and call information in the slave directories consistent with the information in the central directory through the routers distinguishing between the different characteristics of the slave nodes and providing information to the master node on those characteristics and the type of information needed by each slave node; and filtering by the master node of the information supplied to a directory associated with a slave node in accordance with the information provided to the master node on the characteristics of the slave node and the type of information needed by the slave node. - View Dependent Claims (19, 20)
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Specification