GB/T 21049-2022Han Xin code (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 21049-2007 "Han Xin Code". Compared with GB/T 20149-2007, except for structural adjustments and editorial changes In addition, the main technical changes are as follows.

a) Changed "Terms and Definitions" to "Terms, Definitions, Symbols and Abbreviations", deleted the references in Chapter 3 of the.2007 edition Terms and definitions that do not have to be repeated and redefined, and the relevant content of the.2007 edition have been changed and incorporated (see Chapter 3, Chapters 3 and 4 of the.2007 edition);

b) added the terms and definitions of "module" and "uniform resource identifier" (see 3.1.1 and 3.1.13);

c) Added "abbreviations" (see 3.2.2);

d) Added "color inversion" (see 4.1.2.2);

e) Added "Unicode Mode" (see 5.3.10), added "GS1 Mode" (see 5.3.11), added "URI Mode" (see 5.3.12);

f) Added "Unicode schema encoding" (see 5.4.12), added "GS1 schema encoding" (see 5.4.13), added "URI schema" encoding" (see 5.4.14);

g) Added "General Rules" (see 5.7.1);

h) Changed "Quality of Symbols" (see Chapter 7, Chapter 8 of the.2007 edition);

i) "Data transmission" was added (see Chapter 10);

j) Changed "Hanxin Code Correction Graphic Parameters" (see Appendix A, Table 1 of the.2007 edition);

k) Changed "Error Correction Characteristics" (see Appendix B, Appendix A of the.2007 edition);

l) Added Appendix D "URI Pattern Character Set" (see Appendix D);

m) Added Appendix F "Hanxin Code Construction Example" (see Appendix F);

n) Changed Appendix I "Hanxin Code Printing Quality-Special Indicators of Code System" (see Appendix I, Appendix H of the.2007 edition);

o) Added Appendix K "Symbol Identifier of Hanxin Code" (see Appendix K);

p) Added references (see References).

Introduction

The issuing body of this document draws attention to the fact that a declaration of conformity with this document may refer to Chapters 5, 8, 9, Appendix A, Appendix Use of Patents Related to Appendix B, Appendix C, and Appendix D.

The issuing authority of this document has no position on the authenticity, validity and scope of this patent.

The patent holder has undertaken to the issuing body of this document that he is willing to, on reasonable and non-discriminatory terms or conditions, with any applicant, Negotiate patent licensing. This patent holder's statement is on file with the issuing agency of this document.

Please note that in addition to the patents mentioned above, some content of this document may still involve patents. The issuing agency of this document does not undertake to identify the patent responsibility. Chinese letter code

1 Scope

This document specifies the symbol characteristics and symbol structure, data encoding and symbol representation, symbol printing, symbol quality, decoding process, reference decoding algorithm, data transmission and other technical content. This document applies to automatic identification and data collection.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 12905 Barcode Terminology

GB/T 16986 Commodity barcode application identifier

GB/T 23704-2017 Inspection of printing quality of two-dimensional barcode symbols identifiers)]

3 Terms, Definitions, Symbols and Abbreviations