Computer readable recording medium with a wiring design...

Details Computer readable recording medium with a wiring design... Computer readable recording medium with a wiring design...

2011-03-08

2011-03-08

Do, Thuan (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Integrated circuit design processing

Physical design processing

C716S104000, C716S114000, C716S119000

Reexamination Certificate

active

07904866

ABSTRACT:
An apex is extracted from a designed wiring layout. In start/end portion circular arc processing a circular arc is added to the apex-containing portion, and the layout data file is rewritten so that a portion, representing a region surrounded by circular arc and two lines, is added to the wiring line. In bend portion circular arc processing circular arcs are added to the respective apex-containing portions, and the layout data file is rewritten so that: a portion corresponding to a region surrounded by the circular arc and two lines is added to the apex-containing portion of the layout when the determined angle is less than 180 degrees; a portion corresponding to a region surrounded by the circular arc and two lines is removed from the apex-containing portion of the layout when the determined angle exceeds 180 degrees.

REFERENCES:
patent: 5498767 (1996-03-01), Huddleston et al.
patent: 11176870 (1999-07-01), None

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