A Novel Test Generation Methodology for Adaptive Diagnosis

Conference Paper · April 2008with3 Reads
DOI: 10.1109/ISQED.2008.4479733 · Source: IEEE Xplore
Conference: Quality Electronic Design, 2008. ISQED 2008. 9th International Symposium on

    Abstract

    This paper presents a automatic test pattern generation technique to improve the diagnostic resolution of a given test set. Each test pattern generated by existing techniques detects a large number of faults. Identifying the faulty candidate from a large set of possible fault candidates is extremely difficult and time consuming. A novel framework to adoptively generate additional patterns for diagnosing the faulty location is presented. The additional patterns prune a set of fault free candidates from the possible fault candidates. The proposed technique improves the diagnostic resolution where each new pattern detects only a small number of faults and each fault is detected by few patterns. The proposed method is applicable to any fault model and distinguishes a large number of faults with a small number of patterns. For simplicity we demonstrate the effectiveness of the approach on the path delay fault model.