Firstly the paper introduces technology characteristic of EAN-13 and the basic components of the bar code image identification system.
本文首先介绍了EAN - 13条码的技术特点以及条码图像辨识系统的基本组成。
Based on meanings of prefix code of ean bar code, regulations of some concerned laws were expounded from structure of bar code and meanings of prefix code.
针对消费者不清楚商品条码的前缀码代表什么的问题，分别从商品条码的结构、前缀的含义，有关法规的规定加以阐明。
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