Pattern drawing apparatus using charged beams

Details Pattern drawing apparatus using charged beams Pattern drawing apparatus using charged beams

1988-02-26

1990-08-21

Lall, Parshotam S.

Boots, shoes, and leggings

364489, 364488, 250400, 2504923, G06F 1540, H01J 37302

Patent

active

049512161

ABSTRACT:
A re-size circuit extracts the bit data of a pattern to be drawn, at a specific address and its adjacent addresses of a pattern to be drawn, from a bit map memory storing LSI pattern data. For the Data at the adjacent addresses, either "0" or "1" re-size parameter data is set according to the contents of the re-size directions. The thickness of the pattern is altered by means of the logical operation of the data at the adjacent addresses and the re-size parameter data.

REFERENCES:
patent: 4457803 (1984-07-01), Takigawa
patent: 4482810 (1984-11-01), Cooke
patent: 4503329 (1985-03-01), Yamaguchi et al.
patent: 4528634 (1985-07-01), Nakahata et al.
patent: 4586141 (1986-04-01), Yasuda et al.
patent: 4647782 (1987-03-01), Wada et al.
patent: 4653020 (1987-03-01), Cheselka et al.
patent: 4718019 (1988-01-01), Fillion et al.
patent: 4807159 (1989-02-01), Komatsu et al.

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