Method and apparatus for producing multi-layer topological routes
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United States of America Patent
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May 24, 2005
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app pub date -
Aug 9, 2002
filing date -
Jan 22, 2002
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Abstract
Some embodiments of the invention provide a method for identifying topological routes in a multi-layer region of a design layout. The method selects a first net that has several routable elements. For the selected net, it then specifies a first multi-layer topological route that connects the first net's routable elements before selecting another net for routing. The first topological route traverses a plurality of layers. In addition, a topological route is a route that represents a set of diffeomorphic geometric routes.
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