Patent · US Active

Layout optimization using parameterized cells

US7865848B2 · kind B2 · utility

2Cited by

2References

2Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Veit Gernhoefer · Holzgerlingen, DE
Michael S. Gray · Saint Albans, US
Matthew T. Guzowski · South Burlington, US
Jason D. Hibbeler · Williston, US
Stephen L. Runyon · Pflugerville, US
Robert F. Walker · South Burlington, US
Bruce C. Wheeler · South Burlington, US

Key dates

Filing date	Aug 28, 2007
Grant date	Jan 4, 2011
Priority date	—
Expiry date	Jul 5, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06F30/392
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method of layout optimization containing parameterized cells includes reading a physical design containing parameterized cells, creating a new version for each of usage of a given parameterized cell. The method optimizes physical design shapes of each new version of the parameterized cell by assigning variables to parameters of the parameterized cell according to a desired objective. Then, the method updates the parameters of each new version of the parameterized cell and replaces each new version of the parameterized cell with an instance of the parameterized cell having updated parameters. The method can optionally adjust physical design shapes based on constraints related to the parameters.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.