Boots – shoes – and leggings
Patent
1989-06-15
1991-09-03
Smith, Jerry
Boots, shoes, and leggings
364491, 382 8, 382 47, G06F 1540
Patent
active
050460129
ABSTRACT:
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.
REFERENCES:
patent: 4600995 (1986-07-01), Kinoshita
patent: 4864381 (1989-09-01), Seefeldt et al.
patent: 4942619 (1990-07-01), Takagi et al.
patent: 4951216 (1990-08-01), Maluo
Aihara Yoshitada
Komura Yoshihisa
Miyajima Masaaki
Morishita Kazumasa
Suzuki Minoru
Fujitsu Limited
Fujitsu VLSI Limited
Gordon Paul
Smith Jerry
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