Analytical placement method and apparatus
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United States of America Patent
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Feb 17, 2009
Grant Date -
Oct 19, 2006
app pub date -
Mar 6, 2006
filing date -
Sep 6, 2001
priority date (Note) -
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Abstract
Some embodiments provide an analytical placement method that considers diagonal wiring. This method formulates an objective function that accounts for the use of diagonal wiring during routing. Some embodiments use horizontal, vertical, and ±45° diagonal lines. For such a wiring model, some embodiments use the following objective function:represents a weighting factor that biases the function based on the desired closeness of pins i and j.
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