Automatically routing nets with variable spacing
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United States of America Patent
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Feb 3, 2015
Issued Date -
N/A
app pub date -
Jan 9, 2012
filing date -
Jun 1, 2004
priority date (Note) -
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Abstract
A technique will automatically route interconnect of an integrated circuit and adjust spacing between tracks or interconnect in order to improve performance or reduce electromigration effects. By increasing spacing between certain tracks or moving tracks, performance can improve because a track will be more noise immunity from nearby tracks on the same layer or on different layers. The automatic router will adjust spacing between tracks depending on one or more factors. These factors may include current associated with a track, width of a track, capacitance, inductance, and electromigration. In a specific implementation, the technique uses a shape-based approach where a grid is not used. The technique may further vary the width of the tracks.
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