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基于镜像对称参考切片的多扫描链测试数据压缩方法

邝继顺 刘杰镗 张亮

邝继顺, 刘杰镗, 张亮. 基于镜像对称参考切片的多扫描链测试数据压缩方法[J]. 电子与信息学报, 2015, 37(6): 1513-1519. doi: 10.11999/JEIT141146
引用本文: 邝继顺, 刘杰镗, 张亮. 基于镜像对称参考切片的多扫描链测试数据压缩方法[J]. 电子与信息学报, 2015, 37(6): 1513-1519. doi: 10.11999/JEIT141146
Kuang Ji-shun, Liu Jie-tang, Zhang Liang. Test Data Compression Method for Multiple Scan Chain Based on Mirror-symmetrical Reference Slices[J]. Journal of Electronics & Information Technology, 2015, 37(6): 1513-1519. doi: 10.11999/JEIT141146
Citation: Kuang Ji-shun, Liu Jie-tang, Zhang Liang. Test Data Compression Method for Multiple Scan Chain Based on Mirror-symmetrical Reference Slices[J]. Journal of Electronics & Information Technology, 2015, 37(6): 1513-1519. doi: 10.11999/JEIT141146

基于镜像对称参考切片的多扫描链测试数据压缩方法

doi: 10.11999/JEIT141146
基金项目: 

国家自然科学基金(61472123, 60673085)资助课题

Test Data Compression Method for Multiple Scan Chain Based on Mirror-symmetrical Reference Slices

  • 摘要: 为了减少测试数据和测试时间,该文提出一种基于镜像对称参考切片的多扫描链测试数据压缩方法。采用两个相互镜像对称的参考切片与扫描切片做相容性比较,提高了相容概率。若扫描切片与参考切片相容,只需要很少的几位编码就可以表示这个扫描切片,并且可以并行载入多扫描链;若不相容,参考切片被该扫描切片替换。提出一种最长相容策略,用来处理扫描切片与参考切片同时满足多种相容关系时的选取问题。根据Huffman编码原理确定不同相容情况的编码码字,可以进一步提高测试数据的压缩率。实验结果表明所提方法的平均测试数据压缩率达到了69.13%。
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出版历程
  • 收稿日期:  2014-09-02
  • 修回日期:  2014-12-23
  • 刊出日期:  2015-06-19

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