Method and apparatus for routing
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United States of America Patent
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Jan 17, 2006
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 defining a global route for a net in a region of a layout, where each net has a set of routable elements. The method partitions the region into several rectangular sub-regions. It then identifies a set of sub-regions that contain the routable elements of the net. Next, it defines a global route that connects the identified sub-regions, where the global route includes at least one non-Manhattan edge that crosses a boundary between two sub-regions at a non-vertex location.
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