Gridless IC layout and method and apparatus for generating such a layout
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United States of America Patent
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Oct 18, 2005
Grant Date -
N/A
app pub date -
Aug 26, 2002
filing date -
Jun 3, 2001
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Abstract
Some embodiments of the invention provide a method of routing nets in a region of an integrated-circuit ('IC') layout. The method selects a net that has several routable elements. It then defines a route for the net. To define the route, the method uses a wiring model that specifies preferred non-Manhattan wiring directions. It also uses a manufacturing grid as the only grid for constraining the location of interconnect lines for connecting the net's routable elements.
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