| 混合定变长码的测试数据压缩方案 |
| |
| 引用本文： | 詹文法,梁华国,时峰,黄正峰.混合定变长码的测试数据压缩方案[J].计算机学报,2008,31(10). |
| |
| 作者姓名： | 詹文法 梁华国 时峰 黄正峰 |
| |
| 作者单位： | 1. 合肥工业大学计算机与信息学院,合肥,230009;安庆师范学院教育科学与技术系,安徽,安庆,246011
2. 合肥工业大学计算机与信息学院,合肥,230009 |
| |
| 基金项目： | 国家自然科学基金，国家自然科学基金，国家自然科学基金 |
| |
| 摘 要： | 文章提出了一种混合定变长码的测试数据压缩方案,该方案可以有效压缩芯片测试数据量.此压缩方案将代码字拆分为固定长度的首部和可变长度的尾部两部分.首部固定使解压过程简单,硬件开销小,尾部可变使编码灵活.同时采用了将尾部最高位隐藏的方法来进一步提高压缩率,还使用了特殊的计数器来进一步简单化解压电路.对ISCAS 89部分标准电路的实验结果显示,文中提出的方案在压缩效率和解压结构方面都明显优于同类压缩方法,如Golomb码、FDR码、VIHC码、v9C码等.
|
| 关 键 词： | 测试数据压缩 编码 内建自测试 定长码 变长码 |
A Test Data Compression Scheme Based on Mixed Fixed and Variable Length Coding |
| |
| ZHAN Wen-Fa,LIANG Hua-Guo,SHI Feng,HUANG Zheng-Feng.A Test Data Compression Scheme Based on Mixed Fixed and Variable Length Coding[J].Chinese Journal of Computers,2008,31(10). |
| |
| Authors: | ZHAN Wen-Fa LIANG Hua-Guo SHI Feng HUANG Zheng-Feng |
| |
| Affiliation: | ZHAN Wen-Fa1),2) LIANG Hua-Guo1) SHI Feng1) HUANG Zheng-Feng1)1) |
| |
| Abstract: | A test data compression scheme based on fixed and variable length coding(FAVLC) is presented,by using which the test data can be compressed efficiently.In the scheme code words is divided into fixed length head,which eases the control of decompression,and variable length tail,which adds the feasibility of encoding.In order to obtain further compression effect,the highest bit of the tail is reduced from the code words.In addition,a special shift counter is also used,which further ease the control circuit.Experimental results show that the proposed scheme obviously outperforms the traditional coding methods in the compression ratio and the implementation of decompression,such as Golomb,FDR,VIHC,v9C coding. |
| |
| Keywords: | test data compression coding built-in self-test fixed length coding variable length coding |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
