ISO/IEC FDIS 20830

Information technology -- Automatic identification and data capture techniques -- Han Xin Code bar code symbology specification

Technologies de l'information -- Techniques d'identification et de capture de données automatiques -- Spécification des symboles du code à barres de Han Xin

General Information

• Status: Published
• ICS: 35.040.50 - Automatic identification and data capture techniques
• Technical Committee: ISO/IEC JTC 1/SC 31 - Automatic identification and data capture techniques
• Drafting Committee: ISO/IEC JTC 1/SC 31/WG 1 - Data carrier
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 01-Jun-2021
• Completion Date: 01-Jun-2021

Standards Content (sample)

FINAL
INTERNATIONAL ISO/IEC
DRAFT
STANDARD FDIS
20830
ISO/IEC JTC 1/SC 31
Information technology — Automatic
Secretariat: ANSI
identification and data capture
Voting begins on:
2021­06-01 techniques — Han Xin Code bar code
symbology specification
Voting terminates on:
2021­07­27
Technologies de l'information — Techniques d'identification et de
capture de données automatiques — Spécification des symboles du
code à barres de Han Xin
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/IEC FDIS 20830:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO/IEC 2021
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ISO/IEC FDIS 20830:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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Published in Switzerland
ii © ISO/IEC 2021 – All rights reserved
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ISO/IEC FDIS 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

4 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

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ISO/IEC FDIS 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 decode algorithm for Han Xin Code ..................................................................................................................53

10.1 General ........................................................................................................................................................................................................53

10.2 Image preprocessing .......................................................................................................................................................................53

10.3 Locate Finder Pattern and determine the orientation .......................................................................................53

10.4 Structural Information decoding ..........................................................................................................................................55

10.5 Establish the sampling grid .......................................................................................................................................................56

10.6 Sampling ....................................................................................................................................................................................................63

10.7 Masking releasing ..............................................................................................................................................................................63

10.8 Restore data codewords...............................................................................................................................................................64

10.9 Error correction decoding ..........................................................................................................................................................64

10.10 Data codeword decoding .............................................................................................................................................................64

11 Transmitted data ...............................................................................................................................................................................................64

11.1 General ........................................................................................................................................................................................................64

11.2 Basic interpretation .........................................................................................................................................................................64

11.3 Protocol for Extended Channel Interpretation .........................................................................................................64

11.4 Protocol for GS1 data transmission....................................................................................................................................65

Annex A (normative) Alignment Pattern parameters of symbol of different versions .................................66

Annex B (normative) Data capacity and error correction characterics of Han Xin Code ...........................69

Annex C (informative) Information capacity of Han Xin Code ................................................................................................84

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ISO/IEC FDIS 20830:2021(E)

Annex D (normative) Error correction codeword generator polynomials ................................................................93

Annex E (normative) Structural Information ...........................................................................................................................................95

Annex F (infromative)Autodiscrimination compatibility ............................................................................................................98

Annex G (informative) Error correction decoding algorithm ..................................................................................................99

Annex H (informative) User guidance for Han Xin Code printing and scanning ..............................................101

Annex I (normative) Print quality of Han Xin Code — Symbology-specific aspects .....................................103

Annex J (informative) Useful process control techniques .......................................................................................................107

Annex K (informative) Han Xin Code encoding examples .......................................................................................................108

Annex L (informative) Symbology identifier .........................................................................................................................................129

Annex M (normative) Charsets of URI mode .........................................................................................................................................130

Annex N (normative) Source codes for Unicode modein C programming ..............................................................137

Annex O (informative) Implement Source code for URI modein C programming ..........................................161

Bibliography .........................................................................................................................................................................................................................196

© ISO/IEC 2021 – All rights reserved v
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ISO/IEC FDIS 20830:2021(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that are

members of ISO or IEC participate in the development of International Standards through technical

committees established by the respective organization to deal with particular fields of technical

activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international

organizations, governmental and non­governmental, in liaison with ISO and IEC, also take part in the

work.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for

the different types of document should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject

of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent

rights. Details of any patent rights identified during the development of the document will be in the

Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents) or the IEC

list of patent declarations received (see http:// patents .iec .ch).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/

iso/ foreword .html.

This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,

Subcommittee SC 31, Automatic identification and data capture techniques.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
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ISO/IEC FDIS 20830:2021(E)
Introduction

Han Xin Code is a two-dimensional matrix symbology which is made up of an array of nominally square

modules arranged in an overall square pattern, including a Finder Pattern located at four corners of

the symbol that are intended to assist in easy locating of its position, size and inclination. Alignment

Patterns and Assistant Alignment Patterns are also used in Versions 4 to 84 symbols. A wide range

of size of symbols is provided together with four error correction levels. Module dimension is user-

specified to produce symbols by a wide variety of techniques.

Manufacturers of bar code equipment and users of the technology require publicly available standard

symbology specifications to which they can refer when developing equipment and application

standards. This document is published to meet this request.
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FINAL DRAFT INTERNATIONAL STANDARD ISO/IEC FDIS 20830:2021(E)
Information technology — Automatic identification
and data capture techniques — Han Xin Code bar code
symbology specification
1 Scope

This document defines the requirements for the symbology known as Han Xin Code. It specifies the

Han Xin Code symbology characteristics, data encoding process, symbol structure, dimensions and

print quality requirements, error correction rules, reference decoding algorithm, and user-selectable

application parameters.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO/IEC 646, Information technology — ISO 7-bit coded character set for information interchange

ISO/IEC 15415:2011, Information technology — Automatic identification and data capture techniques —

Bar code symbol print quality test specification — Two-dimensional symbols

ISO/IEC 15416, Automatic identification and data capture techniques — Bar code print quality test

specification — Linear symbols

ISO/IEC 15424, Information technology — Automatic identification and data capture techniques — Data

Carrier Identifiers (including Symbology Identifiers)

ISO/IEC 19762, Information technology — Automatic identification and data capture (AIDC) techniques —

Harmonized vocabulary
GS1 General Specifications
3 Terms, definitions, and symbols
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO/IEC 19762 and the following

apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1.1
assistant alignment pattern

non-data pattern located in the perimeter of the Han Xin Code symbol and intended to provide

additional reference points to synchronize modules for reading
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ISO/IEC FDIS 20830:2021(E)
3.1.2
data bit stream

binary sequence that comprises the information bit stream (3.1.9) and the error correction bit stream

(3.1.4)
3.1.3
data codeword

codeword that is used to encode information codewords and error correction codewords.

3.1.4
error correction bit stream

binary sequence used to correct errors, made by error correction encoding from the information bit

stream (3.1.9)
3.1.5
Unicode

international encoding standard for use with different languages and scripts, by which each letter, digit,

or symbol applies across different platforms and programs.

Note 1 to entry: The repertoire of Unicode is synchronized with ISO/IEC 10646, and both are code-for-code

identical.
3.1.6
GS1 mode
encoding mode (3.1.10) used for representing GS1 data in Han Xin Code
3.1.7
URI mode

encoding mode (3.1.11) used for representing uniform resource identifier (URI) described in RFC 3986

in Han Xin Code
3.1.8
Unicode mode

encoding mode (3.1.11) used for representing text data in Unicode (3.1.5) encoding/charset in Han Xin

Code.
3.1.9
information bit stream
binary sequence made up of mode (3.1.11) encodings from the original input data
3.1.10
masking
XOR processing of the bit pattern in the information encoding region
...