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Method and apparatus for data hierarchy maintenance in a system for mask description

  • US 6,453,452 B1
  • Filed: 09/16/1998
  • Issued: 09/17/2002
  • Est. Priority Date: 12/12/1997
  • Status: Expired due to Term
First Claim
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1. In a system for performing an operation in accordance with a particular set of operating criteria on a hierarchically described integrated circuit layout comprising a plurality of cells, the hierarchically described integrated circuit layout having a flattened layout which comprises a rendering of geometric features of the plurality of cells in the hierarchically described integrated circuit layout, a computer program product comprising computer readable media, the computer program product including first program data comprising hierarchically configured correction data corresponding to the hierarchically described layout, the hierarchically configured correction data comprising a plurality of delta planes corresponding to the plurality of cells, and wherein if the first program data were applied to the flattened layout an output comprising data representative of a result of performing the operation on the hierarchically described layout would be generated.

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