| 摘要 |
PROBLEM TO BE SOLVED: To automatically execute a processing for removing a 'pseudo error' occurred in a recessed part from error data at the time of executing design rule checking on layout data of a semiconductor integrated circuit and for extracting only a real error. SOLUTION: Error graphic data (d) and (e) [→(B)] which are judged to be rule violation and are outputted at the time of executing design rule checking on wirings (a) and (b) shown in (A) are enlargement-processed. When logical NOT is taken between enlarged graphic data and error graphic data (d) and (e), graphic data (f) [→(C)] is obtained. When logical NOT is taken between graphic data (f) and layout data (wrings (a) and (b)), data (g) and (h) [→(D)] is obtained. Then, only the real error can be extracted among respective pieces of error graphic data by extracting data except for data which is brought into contact with only one data (g) or (h) from error graphic data (d) and (e).
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