The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
This article describes a method which improves the optimized power of a chip with no increase in computer time by a modification of the Force-Directed Interchange Algorithm.
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
70% of the total text.
Page 1 of 1
Modification of the Force Directed Pairwise Interchange Algorithm for the
Power Oriented Placement Problem
This article describes a method which improves the optimized power of a
chip with no increase in computer time by a modification of the Force-Directed
The Force-Directed Pairwise Interchange Algorithm (FDPR) is described in  and . The algorithm was used to minimize the wire length over all nets in
the logic graph. In that method the force vector for circuit M is defined as:
The new algorithm described here is used to minimize the total DC on power
of all the circuits in the graph. In this method the force vector is defined as:
Weighting the force components with D/-1/(n) is intended to increase the
force of attraction between the circuits in nets driven by fast circuits while
decreasing the force of attraction of nets driven by slow circuits. The expected
result is that the total power on the chip will decrease as a result of the reduction
of the wire capacitance, Cw, of the high-power nets, although Cw of the low-
power nets may increase.
The total optimized power is determined by the method described in  and .
Comparing the results of using the algorithm described in this
publication with the results for FDPR as given in  on two
placements of 1311 circuits, we see:
Case 1 Case 2