Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design
Reexamination Certificate
2005-07-12
2005-07-12
Do, Thuan (Department: 2825)
Computer-aided design and analysis of circuits and semiconductor
Nanotechnology related integrated circuit design
C716S030000, C716S030000, C716S030000
Reexamination Certificate
active
06918102
ABSTRACT:
A method of determining the position of devices in a circuit layout includes defining an array of cells and defining a plurality of device outlines in the array, with each device outline received in at least one cell. A set of size constraints is established that expresses the size of each device. For each column and each row of cells having a plurality of device outlines contained completely therein, the position of one of the device outlines is determined and a constraint is established for each other device outline that expresses its position with respect to the position of the one device outline. A spacing constraint for each pair of adjacent device outlines is established that expresses a spacing therebetween. The foregoing constraints are solved simultaneously and a layout of the device outlines is generated in accordance with the solution.
REFERENCES:
patent: 6587992 (2003-07-01), Marple
patent: 2004/0095907 (2004-05-01), Agee et al.
Cook, Peter W., “Constraint Solver for Generalized IC Layout,” IBM Journal of Research and Development (Sep. 1984) pp. 581-589, vol. 28, No. 5.
Cormen, Thomas H. et al., “Introduction to Algorithms” (2nd ed. 2001) pp. 588-605, McGraw-Hill Book Company, United States.
Colwell Regis R.
Fallon Elias L.
Rutenbar Rob A.
Cadence Design Systems Inc.
Do Thuan
Morrison & Foerster / LLP
LandOfFree
Method and apparatus for exact relative positioning of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for exact relative positioning of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for exact relative positioning of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3373343