INTERNATIONAL ISO/IEC STANDARD 20830 First edition 2021-08 Information technology Automatic identification and data capture techniques Han Xin Code bar code symbology specification Technologies de I'information - Techniques d'identification et de capture de donnees automatiques - Spécification des symboles du code a barres de Han Xin Reference number IEC ISO/IEC 20830:2021(E) iso @IS0/IEC2021 IS0/IEC 20830:2021(E) COPYRIGHT PROTECTED DOCUMENT @IS0/IEC2021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either Iso at the address below or ISO's member body in the country of the requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+4122 749 0111 Email: [email protected] Website:www.iso.org Published in Switzerland ii @ IS0/IEC 2021 - All rights reserved IS0/IEC 20830:2021(E) Contents Page Foreword .vi Introduction. ..vii 1 Scope.. ..1 2 Normative references. ..1 3 Terms, definitions, and symbols .1 3.1 Terms and definitions. 1 3.2 Mathematical and logical symbols 3 Symbology description.. .4 4.1 Symbology characteristics. 4 4.1.1 Basic characteristics 4 4.1.2 Summary of additional features .5 4.2 Symbol structure .5 4.2.1 General. .5 4.2.2 Symbol Versions and Sizes 6 4.2.3 Finder Pattern. .8 4.2.4 Position Detection Pattern separator. 10 4.2.5 Alignment Pattern.. 10 4.2.6 Assistant Alignment Pattern. 13 4.2.7 Structural Information Region .13 4.2.8 Data Region. 14 4.2.9 Quiet Zone 14 5 Requirements .15 5.1 Encode procedure overview 15 5.2 Data analysis. .16 5.3 Mode 17 5.3.1 General. 17 5.3.2 Numeric mode. 19 5.3.3 Text mode. 19 5.3.4 Binary byte mode 19 5.3.5 Common Chinese Characters in Region One mode 19 5.3.6 Common Chinese Characters in Region Two mode 20 5.3.7 GB18030 2-byte Region mode 20 5.3.8 GB18030 4-byte Region mode 20 5.3.9 Extended Channel Interpretation (ECI) mode 20 5.3.10 Unicode mode. 20 5.3.11 GS1 mode. 20 5.3.12 URI mode. 21 5.4 Data encoding 21 5.4.1 General. 21 5.4.2 Constructing the information bit stream 21 5.4.3 Constructing information codewords sequence 21 5.4.4 Numeric mode encoding. 21 5.4.5 Text mode encoding 23 5.4.6 Binary mode encoding 24 5.4.7 Common Chinese Characters in Region One mode encoding 25 5.4.8 Common Chinese Characters in Region Two mode encoding 26 5.4.9 GB18030 2-byte Region mode encoding. 27 5.4.10 GB18030 4-byte Region mode encoding. 28 5.4.11 ECI mode encoding. 29 5.4.12 Unicode mode. 30 5.4.13 GS1 mode encoding .33 5.4.14 URI mode. 36 @ IS0/IEC 2021 - All rights reserved ii IS0/IEC 20830:2021(E) 5.4.15 Mixed modes encoding .41 5.5 Error detection and correction. .42 5.5.1 General. .42 5.5.2 Generating the error correction codewords ..42 5.5.3 Error correction capacity .44 5.6 User considerations for encoding data in a Han Xin Code symbol ..44 5.6.1 General. .44 5.6.2 User selection of error correction level. .44 5.6.3 User selection of mode ..44 5.6.4 User selection of Extended Channel Interpretation .45 5.6.5 User selection of symbol size. ..45 5.7 Construction of final data bit stream .45 5.8 Symbol construction .45 5.8.1 General. ..45 5.8.2 Fixed Pattern placement .45 5.8.3 Data placement. ..46 5.8.4 Masking .48 5.8.5 Structural Information placement ..49 6 Symbol dimensions. 50 6.1 Dimensions. .50 6.2 Quiet zone. .50 7 User guidelines. 50 7.1 Human readable interpretation .50 7.2 Autodiscrimination capability ..51 7.3 Principle of Han Xin Code symbol printing and scanning .51 8 Symbol quality .51 8.1 General .51 8.2 Symbol quality parameters 51 8.2.1 General. 51 8.2.2 Fixed Pattern damage. .51 8.2.3 Symbol grade .51 8.2.4 Grid non-uniformity. .51 8.3 Process control measurements. .51 9 Decoding procedure overview .52 10 Reference