Method and apparatus for routing
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United States of America Patent
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Jan 30, 2007
Grant Date -
May 20, 2004
app pub date -
Dec 31, 2002
filing date -
Nov 18, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
Some embodiments of the invention provide a method of identifying global routes for nets in a region of a layout with multiple layers, where each net has a set of routable elements. The method partitions each layer of the region into several sub-regions. For each net, the method then identifies a route that connects the sub-regions that contain the net's set of routable elements. Some of the identified routes have at least one non-Manhattan edge and traverse sub-regions on multiple layers.
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