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Congestion based cost factor computing apparatus for integrated circuit physical design automation system

  • US 5,914,887 A
  • Filed: 04/19/1994
  • Issued: 06/22/1999
  • Est. Priority Date: 04/19/1994
  • Status: Expired due to Term
First Claim
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1. A computing apparatus for computing a cost factor of a placement of cells on an integrated circuit chip and interconnect nets for said placement, comprising:

  • a bounder for constructing bounding boxes around said interconnect nets respectively; and

    a processor for computing overlap of said bounding boxes and computing said cost factor as a first predetermined function of said overlap.

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