US Patent 7171635 Method and apparatus for routing

Patent 7171635 was granted and assigned to Cadence Design Systems on January, 2007 by the United States Patent and Trademark Office.

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Patent Inventor Names

Jonathan Frankle0

Steven Teig0

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Patent 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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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=071716350

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