Patent ID: 7464296
Filing Date: 2008-12-09
Classification: G01R,G06F

Abstract:
1. A failure candidate identifying system comprising: a failure dictionary storing unit configured to store a failure dictionary that is generated by performing a failure simulation by supposing each of a plurality of failure modes against each of a plurality of input patterns; a searching tree generating unit configured to construct a failure candidate searching tree by using the failure dictionary, the failure candidates searching tree having a tree structure with nodes including a route node and child nodes, at which data of detect failure candidate and un-detect failure candidate are set respectively corresponding to the failure modes with respect to the input patterns, each of the child nodes having a number of data being less than that of the parent node; a test vector generating unit configured to generate test vectors based on the input patterns to provide a test equipment for measuring a semiconductor apparatus so as to obtain fail logs as a result of said measurement; a failure candidates searching unit configured to restrict failure candidates by using the failure candidates searching tree and the fail logs; a display unit configured to display the restricted failure candidates; and means for executing the operations of the failure dictionary storing unit, the searching tree generating unit, the failure candidates searching unit and the display unit.