Node apparatus and communication network
Patent 4885742 Issued on December 5, 1989. Estimated Expiration Date: 
January 27, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 27, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and means for demand accessing and broadcast transmission among ports in a distributed star network Data processing systems and methods Multicast routing algorithm Distributed load sharing Network to transmit prioritized subtask pockets to dedicated processors Patent #: 4814979 InventorAssigneeApplicationNo. 302258 filed on 01/27/1989US Classes:370/408, Nodes interconnected in hierarchy to form a tree370/445Carrier sense multiple access (CSMA)ExaminersPrimary: Griffin, Robert L.Assistant: Chin, Wellington Attorney, Agent or FirmForeign Patent References
International ClassesH04J 003/02H04J 003/24 Foreign Application Priority Data1988-01-28 JPAbstractA node apparatus is used in a communication network having a hierarchical structure and transmission paths each coupling one node apparatus to another node apparatus or a terminal device. The node apparatus has at least one high order direction port, low order direction ports, and a control unit for controlling the coupling of the high order direction port and the low order direction ports. When signals are transmitted from the terminal devices approximately at the same time, one of the signals which first reaches the node apparatus provided in a highest order layer is broadcasted within the communication network and remaining signals are eliminated.Field of SearchTree or cascade | |
