Method and apparatus for optimizing the path of a physical wire
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United States of America Patent
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-
May 1, 2001
Grant Date -
N/A
app pub date -
Jan 23, 1998
filing date -
Mar 4, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for transforming a topological wire route to a physical wire route is described where the topological wire is a connected route having only a topological position determined with respect to terminals or obstacles. A topological wire is first selected and then obstacles which sight the selected wire are identified. A fan with a radius that is a predetermined number times a minimum space is then set to the identified obstacle as a forbidden region. A minimum space must be left between the selected wire and the identified obstacle. Finally, a shortest route is detected so that it does not pass through the forbidden region, and the route of the physical wire on the board is determined with the shortest route.
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