Computer-aided design and analysis of circuits and semiconductor – Integrated circuit design processing – Optimization
Reexamination Certificate
2011-08-16
2011-08-16
Garbowski, Leigh Marie (Department: 2825)
Computer-aided design and analysis of circuits and semiconductor
Integrated circuit design processing
Optimization
C716S106000, C703S002000
Reexamination Certificate
active
08001515
ABSTRACT:
An analog system consists of a multitude of interconnected components. Design of such a system involves optimization of the component parameters to achieve a target behavior, collectively called specification. The present invention provides a generic cost function for analog design optimization. It also provides cost surface modeling to speed up the optimization. The cost function compares the behavior of a design to a quantitative specification, which can be a ‘golden’ reference behavior (specification), and measures the error cost, an index of the behavioral discrepancy. That is, the target behavior is explicitly embedded in the cost function. By using the cost function, one can readily qualify a design and thereby identify good/optimum designs. The cost surface modeling with a Latin Hypercube Sampling design-of-experiment provides a statistical mathematical approximation of the actual design's error cost surface, speeding up the optimization by replacing the costly simulation of the actual design with mere evaluation of the mathematical cost surface model expression.
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Dergosits & Noah LLP
Garbowski Leigh Marie
National Semiconductor Corporation
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