Patent ID: 7664307

Claim:
A photomask manufacturing support system comprising: a data processing device comprising: a drawing data interpreting unit for extracting graphic information for respective mask patterns from drawing data which has a hierarchical structure consisting of a plurality of layer's information; a data analysis unit for analyzing said graphic information to output analysis results thereof to be used in a mask pattern drawing process; and a data conversion unit for converting said graphic information to inspection data for carrying out a defect inspection in comparison with a mask pattern to be inspected, wherein said data conversion unit and said data analysis unit execute in parallel on said graphic information prior to the completion of said drawing data interpreting unit extracting all said graphic information, wherein said drawing data interpreting unit extracts said graphic information in a manner dividing a mask pattern region into a plurality of pieces, said data conversion unit converts in sequence said graphic information extracted in a divided manner to inspection data for carrying out a defect inspection in comparison with a mask pattern to be inspected, and said data analysis unit uses in sequence, said graphic information having a finished drawing image of a photomask without a hierarchical structure generated in the course of conversion to said inspection data, for an analysis of drawing analysis results to be used in a mask pattern drawing process.