Method and system for implementing an analytical wirelength...

Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design

Reexamination Certificate

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Details

C716S030000, C716S030000, C716S030000, C716S030000, C716S030000, C703S001000, C174S261000

Reexamination Certificate

active

07107556

ABSTRACT:
Disclosed are methods and systems for formulating a wirelength estimate that takes into account whether any of the routing directions are unavailable. Under certain circumstances, one or more of the routing layers may not be available for routing a wire. If this occurs, then the bounding box that is determined for performing the wirelength estimate would take into account the unavailability of the layer.

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“Congestion Reduction during Placement with Provable Good Approximation Bound”, ACM Trans. on Design Automation of Electronic Systems, vol. V, No. N, Feb. 2003, pp. 1-17, X. Yang et al.

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