Barcode reader technology has had a profound impact on China’s modern economy already.
China’s automatic identification industry for about 20 years of development history, initially mainly used in retail and warehousing logistics, with the field of automatic identification related carrier technology, acquisition equipment manufacturing technology, software services, system technology, the introduction of technology and fast Development, China’s automatic identification technology continues to progress, the product market has also grown up. At present, the automatic identification industry has become one of the important technical means to promote the development of national economy information. Today, the development of economy and information globalization has played a decisive role in the development of information construction in China.Barcode reader technology has had a profound impact on China’s modern economy already.
Corresponding to the rapid development of China’s information technology, driven by a number of domestic enterprises through independent research and development, and gradually mastered the field of automatic identification of the core technology, successfully developed with independent brands of automatic knowledge products, and product performance and quality Reached the international level, in the realization of import substitution at the same time, began to board the international arena.
Barcode reader technology is a comprehensive technology integrating bar code theory, optoelectronic technology, computer technology, communication technology and electronic mechanical technology. Barcode has the advantages of simple production, fast information collection, high accuracy, large amount of information, low cost and easy access to reading equipment..
At present, the bar code is divided into two categories: one-dimensional code and two-dimensional code.
One-dimensional code is in a direction (usually horizontal direction) by a group in accordance with a certain coding rules, the width of the bar (Bar) and the space (Space) and its corresponding character of the logo, to express certain information. Common one-dimensional code encoding rules are EAN code, UPC code, 128 yards, 39 yards, Kudebka code, etc.
Two-dimensional code is developed on the basis of one-dimensional code, and can store information in both horizontal and vertical plane two-dimensional space. Compared with the one-dimensional code, the two-dimensional code information capacity is large, in a two-dimensional code can store more than 1000 bytes; information density is high, the same size of the two-dimensional code can be one-dimensional code information density of more than 100 times; Recognition rate is extremely high, because the two-dimensional code has a strong data error correction technology, even if there is a partial damage, the area of fouling can be correctly read all the information; coding range, all can be digitized information can be encoded. Common two-dimensional code encoding rules are PDF417, QR Code, Data Matrix, Aztec Code and so on.
