Title :
Stretching a knock-knee layout for multilayer wiring
Author :
Brady, Martin L. ; Sarrafzadeh, Majid
Author_Institution :
Lockheed Res. & Dev., Palo Alto, CA, USA
fDate :
1/1/1990 12:00:00 AM
Abstract :
The problem of stretching a knock-knee layout in the knock-knee mode to ensure its wirability is considered. An optimal algorithm for the problem in two layers is presented. A 4/3 approximation algorithm for the corresponding problem in three layers, shown to be NP-complete, is devised
Keywords :
VLSI; circuit layout CAD; 4/3 approximation algorithm; NP-complete; VLSI; knock-knee layout stretching; knock-knee mode; multilayer wiring; optimal algorithm; Circuits; Law; Legal factors; Nonhomogeneous media; Research and development; Routing; Tiles; Very large scale integration; Wires; Wiring;
Journal_Title :
Computers, IEEE Transactions on
