| 摘要 |
Multiple signal lines in a circuit net the vertex of which is a maximum observation point having a maximum diagnosis difficulty index among a plurality of diagnosis difficulty indexes of all the observation points that are used for observing signal lines in the circuit, each of the plurality of diagnosis difficulty indexes of the observation points representing the difficulty in fault diagnosis at the corresponding observation point are selected as first insersion candidates. A second insertion candidate onto which the test point is to be inserted is selected from the first insertion candidates, considering effects of inserting the test point onto the respective first insertion candidates. Thereby, insertion of a test point reduces dispersion of the diagnosis difficulty indexes of all the observation points. |
