Electronic cad system and layout data producing method therefor
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United States of America Patent
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Issued Date -
Feb 12, 2004
app pub date -
Jan 6, 2003
filing date -
Mar 8, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An electronic CAD system for producing layout data by using data of a predetermined pattern, which employs a novel set of data attributes for reducing the amount of layout data. The system has a layout data production processing unit for producing the following data as the layout data: identification data for a polygon used for designating an area where a plurality of the predetermined patterns are arranged; a set of vertex coordinates of the polygon; identification data of the predetermined pattern; and data for defining intervals at which the predetermined patterns are arranged. Even when patterns are arranged in an undefined area having a shape which cannot be represented by a simple array of the patterns, the array representation is performed by employing the set of vertex coordinates of a polygon for designating an area where the patterns are arranged.
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