Local preferred direction architecture

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United States of America Patent

PATENT NO 8166442
APP PUB NO 20090024977A1
SERIAL NO

12241034

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Abstract

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Some embodiments of the invention provide a Local Preferred Direction (LPD) wiring model for use with one or more EDA tools (such as placing, routing, etc). An LPD wiring model allows at least one wiring layer to have a set of regions that each have a different preferred direction than the particular wiring layer. In addition, each region has a local preferred direction that differs from the local preferred direction of at least one other region in the set. Furthermore, at least two regions have two different polygonal shapes and no region in the set encompasses another region in the set. Some embodiments also provide a Graphical User Interface (GUI) that facilitates a visual presentation of an LPD design layout and provides tools to create and manipulate LPD regions in a design layout.

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Patent Owner(s)

Patent OwnerAddress
CADENCE DESIGN SYSTEMS INCSAN JOSE CA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Feather, Heath North Andover, US 21 93
Frankle, Jon Los Gatos, US 3 170
Fujimura, Akira Saratoga, US 225 2554
Harrison, David S Sunnyvale, US 2 26
Hetzel, Asmus Berlin, DE 28 433
Jacques, Etienne Bristol, GB 32 629
King, Roger San Jose, US 23 83
Malhotra, Anish Los Altos, US 11 238
Matveev, Alexandre San Jose, US 2 19

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