An Efficient Method for Compressing Test Data

  • Authors:
  • Takahiro Yamaguchi;Marco Tilgner;Masahiro Ishida;Dong Sam Ha

  • Affiliations:
  • -;-;-;-

  • Venue:
  • ITC '97 Proceedings of the 1997 IEEE International Test Conference
  • Year:
  • 1997

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Abstract

The overall throughput of automatic test equipment(ATE) is sensitive to the download time of test data. An effec-tiveapproach to the reduction of the download time is tocompress test data before the download. A compression al-gorithmfor test data should meet two requirements: losslessand simple decompression. In this paper, we propose a newtest data compression method that aims to fully utilize theunique characteristics of test data compression. The key ideaof the proposed method is to perform the Burrows-Wheelertransformation on the sequence of test patterns, and then toapply run-length coding. The experimental results show thatour compression method performs better than six othermethods for compressing test data. The average compressionratio of the proposed method performed on five test data setsis 315, while that for the next best one, the LZW method, is21.