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Method and apparatus for routing

  • US 20040098694A1
  • Filed: 12/31/2002
  • Published: 05/20/2004
  • Est. Priority Date: 11/18/2002
  • Status: Active Grant
First Claim
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1. A method of identifying global routes for nets in a region of a layout with multiple layers, wherein each net has a set of routable elements, the method comprising:

  • a) partitioning each layer of the region into a plurality of sub-regions;

    b) for each net, identifying a route that connects the sub-regions that contain the net'"'"'s set of routable elements, wherein some of the routes have at least one non-Manhattan edge and traverse sub-regions on multiple layers.

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