05046012 is referenced by 25 patents and cites 4 patents.

A pattern data processing method processes hierarchical pattern data which has a hierarchical structure and describes in each level thereof one or a plurality of internal cells constituting one or a plurality of logic blocks of a semiconductor integrated circuit device which is to be produced. The pattern processing method comprises the steps of defining a frame at a boundary between a level i of the hierarchical structure and a level i+1 which is higher than the level i, cutting a first portion of a pattern which protrudes out of the frame form the level i to the level i+1 and defining the cut, first portion as a pattern of the level i+1, cutting a second portion of a pattern which protrudes out of the frame from the level i+1 to the level i and deleting the cut, second portion, and repeating the steps of cutting the first and second portions for a predetermined number of levels for increasing values of i, where i=1, 2, . . . , n, n is an arbitrary integer and the pattern of the semiconductor integrated circuit device is described in a highest level n+1.

Title
Pattern data processing method
Application Number
7/366483
Publication Number
5046012
Application Date
June 15, 1989
Publication Date
September 3, 1991
Inventor
Minoru Suzuki
Seto
JP
Masaaki Miyajima
Inuyama
JP
Yoshihisa Komura
Tajimi
JP
Yoshitada Aihara
Kawasaki
JP
Kazumasa Morishita
Seto
JP
Agent
Staas & Halsey
Assignee
Fujitsu Vlsi
JP
Fujitsu
JP
IPC
G06F 15/40
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