Method and apparatus for transforming an arbitrary topology collection of nodes into an acyclic directed graph
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United States of America Patent
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Jul 21, 1998
Issued Date -
N/A
app pub date -
Dec 20, 1996
filing date -
Dec 21, 1992
priority date (Note) -
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Abstract
A system and method are described which take an arbitrarily assembled collection of nodes on a bus or network and imposes an optimized hierarchical tree structure where there is only one root node. Nodes having both parent and child nodes are considered branch nodes while nodes having only parent nodes are leaf nodes. Loops or cycles in the physical topology are resolved into a logical topology that is acyclic and directed. A signaling scheme is developed in which nodes, via on board communications hardware, signal all connected nodes and respond accordingly until hierarchical relationships are established. Cycles are resolved by intelligently breaking links to yield an acyclic graph. Direction is established by each node recognizing its parent/child status with respect to connected nodes until a single node is established as a root node.
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