摘要
提出了一种基于一位标识的测试向量混合编码压缩方法。本方法根据各个向量含X位的概率,把整个测试集分成两组,一组采用混合编码;另一组采用双游程编码。在混合编码中,整个测试数据被划分成若干个数据块。每个数据块又包含两个子数据块,第一个子数据块采用单游程编码,第二个子数据块采用一位标识法。解压时,以第一个子数据块的长度来计算出第二个子数据块的长度。这样,减少了一部分需要编码的数据。实验结果表明:该方法平均压缩率可达到68.74%,与其他方法相比可高出11.53%。
A hybrid coding compression method of test vector based on an identification is presented in this paper. According to the probability of vector containing X-bit, the entire test set is divided into two groups, a group of mixed coding, another group with double run-length coding. In hybrid coding, the entire test data is divided into a plurality of data block. Each data block contains two sub-data blocks, the first sub-block of data uses a single runlength coding, and the second sub-block of data uses an identification method. When the decompression, according to the length of first sub-data block, the length of the second sub-data block could be calculated. Thus, it can reduce the part data needing to be encoded. The experimental results show that this scheme can achieve better compression.
出处
《电子测量与仪器学报》
CSCD
2013年第4期312-318,共7页
Journal of Electronic Measurement and Instrumentation
基金
国家自然科学基金(60673085
60773207)资助项目
关键词
测试数据压缩
游程编码
数据模块
解压
test date compression
run coding
data block
decompression