| 摘要 |
PROBLEM TO BE SOLVED: To facilitate revision comparison in three-dimensional layout adjustment CAD techniques by integrally managing layout and specifications in common databases, and extracting differences. SOLUTION: A converter 20 synthesizes layout data 12 for each revision in a CAD means 10 and a specification database 15 by means of link keys in them, and converts the layout data using a pattern file 25, thereby storing them in respective common databases 30. A difference processing means 40 extracts information about differences between the common databases 30 for each revision, and stores this information as internal data 45. A converter 50 serving as a second converter means develops the internal data 45 or the contents of the common databases 30 to the layout data 60 in the CAD means 10 by means of a pattern file 55, and an output means 70 outputs the internal data 45 or the layout data 60 converted. COPYRIGHT: (C)2009,JPO&INPIT
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