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Routing method and apparatus

  • US 7,155,697 B2
  • Filed: 01/13/2002
  • Issued: 12/26/2006
  • Est. Priority Date: 08/23/2001
  • Status: Expired due to Fees
First Claim
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1. A method of defining global routes for nets in an arbitrary region of a circuit layout, wherein each net has a set of pins, the method comprising:

  • a) using a first set of lines to measure length of the global routes;

    b) using a second set of lines to measure congestion of the global routes;

    c) using a third set of lines to partition the arbitrary region into a first set of sub-regions; and

    d) for each net, identifying a global route that connects a group of first-set sub-regions that contain the net'"'"'s set of pins.

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