Title :
An effective data structure for VLSI layout systems
Author :
Iwasaki, Hiroaki ; Murakata, Masami ; Mitsuhashi, Takashi
Author_Institution :
ULSI Res. Center, Toshiba Corp., Japan
Abstract :
An effective data structure is presented which is called a B-2 tree (bucket tree with 2-D binary trees) suitable for VLSI layout systems. The B-2 tree consists of a main binary tree which forms a directory for buckets, and bisector lists with 2-D binary trees. Experimental results have shown that the B-2 tree is superior to other data structures in region search performance even for huge size data. It has also been shown that its region search performance is not influenced by the distribution of objects on a chip
Keywords :
VLSI; circuit layout CAD; data structures; search problems; trees (mathematics); 2D binary trees; B-2 tree; VLSI layout systems; bisector lists; bucket tree; data structure; directory; region search performance; size data; Binary trees; Circuits; Complexity theory; Data structures; Database systems; Degradation; Spatial databases; Tree data structures; Ultra large scale integration; Very large scale integration;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176215
