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基于鏡像對稱參考切片的多掃描鏈測試數據壓縮方法

鄺繼順 劉杰鏜 張亮

鄺繼順, 劉杰鏜, 張亮. 基于鏡像對稱參考切片的多掃描鏈測試數據壓縮方法[J]. 電子與信息學報, 2015, 37(6): 1513-1519. doi: 10.11999/JEIT141146
引用本文: 鄺繼順, 劉杰鏜, 張亮. 基于鏡像對稱參考切片的多掃描鏈測試數據壓縮方法[J]. 電子與信息學報, 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

基于鏡像對稱參考切片的多掃描鏈測試數據壓縮方法

doi: 10.11999/JEIT141146
基金項目: 

國家自然科學基金(61472123, 60673085)資助課題

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

  • 摘要: 為了減少測試數據和測試時間,該文提出一種基于鏡像對稱參考切片的多掃描鏈測試數據壓縮方法。采用兩個相互鏡像對稱的參考切片與掃描切片做相容性比較,提高了相容概率。若掃描切片與參考切片相容,只需要很少的幾位編碼就可以表示這個掃描切片,并且可以并行載入多掃描鏈;若不相容,參考切片被該掃描切片替換。提出一種最長相容策略,用來處理掃描切片與參考切片同時滿足多種相容關系時的選取問題。根據Huffman編碼原理確定不同相容情況的編碼碼字,可以進一步提高測試數據的壓縮率。實驗結果表明所提方法的平均測試數據壓縮率達到了69.13%。
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出版歷程
  • 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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