| PDF417纠错码原理及实现 |
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| 引用本文： | 戴水贵,吴晓联. PDF417纠错码原理及实现[J]. 解放军理工大学学报(自然科学版), 2006, 7(2): 137-140 |
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| 作者姓名： | 戴水贵 吴晓联 |
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| 作者单位： | 解放军理工大学,工程兵工程学院,江苏,南京,210007;解放军海军司令部,北京,100841 |
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| 摘 要： | 为了促进PDF417这种高效率低成本的条形码在中国的深入研究和推广,介绍了Reed-Solomon纠错码原理和它在PDF417二维条形码中的应用方法.推导了在迦罗华域GF（929）内编译码方法,并通过实例具体说明.提出了一种适用于PDF417纠错编码和译码的查表方法,可以简单确定任意码字在GF（929）内所对应的本原元的幂次.运用该方法可以快速而准确地计算出纠错码生成多项式的系数列以及差错伴随式.
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| 关 键 词： | RS错误控制码 PDF417纠错码 迦罗华域 编码 译码 |
| 文章编号： | 1009-3443（2006）02-0137-04 |
| 收稿时间： | 2005-09-09 |
| 修稿时间： | 2005-09-09 |
PDF417 error correcting code and its implementation |
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| DAI Shui-gui and WU Xiao-lian. PDF417 error correcting code and its implementation[J]. Journal of PLA University of Science and Technology(Natural Science Edition), 2006, 7(2): 137-140 |
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| Authors: | DAI Shui-gui and WU Xiao-lian |
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| Affiliation: | Engineering Institute of Corps of Engineers,PLA Univ.of Sci.& Tech.,Nanjing 210007,China;The Headquarters of the Navy,Beijing 100841,China |
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| Abstract: | To promote the research and application of PDF417,a two-dimensional bar code with high efficiency and low cost,the principle of reed-solomon(RS) error correcting code and its application in two-dimensional bar code PDF417 were introduced,and details on encoding in GF(929) were presented.One example was used to make the application clearer.Meanwhile,a looking-through database method used for yielding PDF47 error correcting codes was also developed,making it easier and more accurate to compute the coefficients of the generating polynomial and results of syndrome polynomials. |
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| Keywords: | RS(Reed-Solomon) error control code PDF417 error correcting code Galois region encode decode |
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