| 摘要 |
PROBLEM TO BE SOLVED: To optimally dispose capacitive elements for EMI measures in free spaces on the floor of a semiconductor integrated circuit. SOLUTION: A plurality of free spaces where capacitive elements for EMI measures can be disposed, are extracted from the floor of the semiconductor integrated circuit and individuals are obtained, the individuals being constituted of gene sequences arraying genes which are distinguished by disposing/not disposing capacitive elements regarding the plurality of extracted free spaces. A plurality of individuals with different gene sequences are created, and each of the individuals is evolved by evaluating adaptivity represented by a predetermined index by applying a genetic algorithm. An individual with the highest adaptivity is obtained as an optimal solution, and the capacitive elements are disposed in the free spaces represented by the gene sequences of the individual of the optimal solution. COPYRIGHT: (C)2007,JPO&INPIT
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