System and method for identifying failure candidates in a...

Details System and method for identifying failure candidates in a... System and method for identifying failure candidates in a...

2005-05-11

2008-12-09

Baderman, Scott T. (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S729000, C714S734000

Reexamination Certificate

active

07464296

ABSTRACT:
A failure candidates identifying system has a tree structure in which input patterns selected from a failure dictionary are set as nodes. The failure candidates identifying system comprises a failure candidates searching tree in which an input pattern does not exist with overlapping in a route from a root node of the nodes. A searching tree generating unit is configured to set as a child node of the node by selecting an input pattern of the smallest absolute value of a difference between a detect failure number at the observed failure mode and an un-detect failure number from the failure dictionary by observing a Detect failure or an un-detected failure at the input pattern of the node in case of the node has a child node. A failure candidates searching unit is configured to extract the failure candidates by searching a D-node being set as the child node with observing the un-detect failure based on a fail data indicating “Pass” or “Fail” among the fail logs when the fail data is “Fail” and by searching a U-node being set as the child node with observing the detect failure without searching the D-node when the fail data is “Pass”.

REFERENCES:
patent: 6308293 (2001-10-01), Shimono
patent: 6397362 (2002-05-01), Ishiyama
patent: 7043384 (2006-05-01), Matsushita et al.
patent: 7238958 (2007-07-01), Iizuka
patent: 2002/0176288 (2002-11-01), Nozuyama
patent: 2006/0028229 (2006-02-01), Subramaniam et al.
patent: P2000-155156 (2000-06-01), None

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