Title :
On internal-external layouts
Author :
Tollis, Ioannis G.
Author_Institution :
Dept. of Comput. Sci., Texas Univ., Richardson, TX, USA
fDate :
1/1/1989 12:00:00 AM
Abstract :
E.L. Lloyd and S.S. Ravi recently (1984) considered the problem of writing in a channel using one layer. They restricted their investigation to the river-routing problem and defined two classes of layouts, fully internal and internal-external layouts. The approach of internal-external layout is more powerful and it can solve problems more generally than the river-routing problem. Determining the conditions under which an arbitrary channel routing problem admits an internal-external layout is mentioned as an interesting open problem. A complete characterization of channel routing problems that admit an internal-external layout is presented, and a linear-time algorithm for testing if a channel routing problem admits such a layout is proposed
Keywords :
VLSI; circuit layout; graph theory; network topology; VLSI; channel routing; internal-external layouts; linear-time algorithm; testing; Circuits and systems; Delay lines; Digital filters; Equations; Filtering; Neural networks; Rivers; Routing; TV; Timing;
Journal_Title :
Circuits and Systems, IEEE Transactions on
