GB/T 18284-2000 PDF in English
GB/T 18284-2000 (GB/T18284-2000, GBT 18284-2000, GBT18284-2000)
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| GB/T 18284-2000 | English | 905 |
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GB/T 18284-2000: PDF in English (GBT 18284-2000) GB/T 18284-2000
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 35.040
A 24
neq ISO/IEC 18004:2000
QR Code
快速响应矩阵码
ISSUED ON: DECEMBER 28, 2000
IMPLEMENTED ON: JULY 01, 2001
Issued by: State Bureau of Quality and Technical Supervision
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Definitions ... 4
4 Convention ... 7
5 Symbol Description ... 7
6 Data Encoding and symbol Representation ... 15
7 Structured Append ... 57
8 Symbol Printing and Marking ... 59
9 Symbol Quality ... 60
10 Decoding Procedure Overview ... 62
11 Reference Decode Algorithm for QR Code ... 63
12 Transmitted Data ... 70
Annex A (Normative) Error Detection and Correction Generator Polynomials73
Annex B (Normative) Error Correction Decoding Steps ... 78
Annex C (Normative) Format Information ... 80
Annex D (Normative) Version Information ... 82
Annex E (Normative) Position of Alignment Patterns ... 85
Annex F (Normative) Symbology Identifier ... 87
Annex G (Informative) Symbol Encoding Example ... 88
Annex H (Informative) Optimization of Bit Stream Length ... 91
Annex I (Informative) User Guidelines for Printing and Scanning of QR Code
Symbols ... 94
Annex J (Informative) Matrix Code Print Quality Guideline ... 96
Annex K (Informative) Process Control Techniques ... 101
Foreword
This Standard non-equivalently adopts ISO/IEC 18004: 2000 Information Technology
– Automatic Identification and Data Capture Techniques – Bar Code Symbology – QR
Code. The QR code is a matrix two-dimensional code. It is arranged by square
modules in a square pattern. It also includes a unique positioning pattern at the three
corners of the symbol. It can help determine the position, size and inclination of the
symbol. The QR code has a large size range and provides 4 levels of error correction.
The width of the module is determined by the user according to the conditions of the
application.
Based on the current situation of the application of QR codes in China, this Standard
has made selections and improvements to ISO/IEC 18004 on the basis of careful
analysis and research. The QR code symbol specified in ISO/IEC 18004 has two
symbol modes: mode 1 symbol and mode 2 symbol. Given that QR code mode 1
symbol is the original specification of QR code, while mode 2 symbol is an enhanced
form of QR code. Compared with the mode 1 symbol, the mode 2 symbol is added
many new characteristics; and the ISO/IEC 18004 standard recommends the use of
mode 2 symbol in new and open systems. Therefore, this Standard only specifies the
following technical requirements such as encoding, symbol structure and size,
reference decoding algorithm, etc., of mode 2 symbol of QR code in the ISO/IEC 18004
standard; and discards the related content of mode 1 symbol of QR code. And Delete
the Clause 14: Automatic Identification Capability, Annex J (Informative): Automatic
Identification, and Annex M (Informative): Contents of QR Code Mode 1 Symbol
Features in the International Standard. In order to facilitate the popularization and
application of this Standard in China, a specific extended ASCII character set is used
to replace the JIS 0201 character set in the original standard. The representation mode
in China-Chinese character data replaces the content of the representation mode in
Japanese Kanji character in ISO/IEC 18004, which improves the efficiency of the two-
dimensional code representation of China-Chinese characters, and meets the demand
for two-dimensional bar codes to represent Chinese characters, thus ensuring the
feasibility and practicality of the application of this Standard in China.
The Annexes A, B, C, D, E, and F of this Standard are normative.
The Annexes G, H, I, J, and K of this Standard are informative.
This Standard was proposed by and shall be under the jurisdiction of Article Numbering
Centre of China.
Drafting organization of this Standard: Article Numbering Centre of China
Chief drafting staffs of this Standard: Zhang Chenghai, Guo Weihua, Luo Qiuke, Huang
Yanbin, and Zhao Nan.
QR Code
1 Scope
This Standard specifies the coding, symbol structure and size characteristics, error
correction rules, reference decoding algorithms, and symbol quality requirements of
the Quick Response Matrix Code (QR Code, hereinafter referred to as QR code)
symbols.
This Standard is applicable to automatic identification and data acquisition.
2 Normative References
The following standards contain provisions which, through reference in this Standard,
constitute provisions of this Standard. At the time of publication, the editions indicated
are valid. All standards are subject to revision. The parties who are using this Standard
shall explore the possibility of using the latest version of the following standards.
GB/T 1988-1998 Information Technology - 7-Bit Coded Character Set for
Information Interchange (eqv ISO/IEC 646:1991)
GB 2312-1980 Code of Chinese Graphic Character Set for Information
Interchange - Primary Set
GB/T 12905-2000 Bar Coding Terminology
GB 18030-2000 Information Technology - Chinese Ideograms Coded Character
Set for Information Interchange-Extension for the Basic Set
ISO/IEC 15424:1999 Information Technology - Automatic Identification and Data
Capture Techniques - Data Carrier / Symbology Identifiers
AIM International Technical Specification - Extended Channel Interpretations: Part
1: Identification Scheme and Protocol (Referred to as “AIM ECI Specification”)
3 Definitions
For the purposes of this Standard, the following definitions apply.
3.1 Alignment pattern
A fixed reference pattern that is used to determine the position of the matrix symbol.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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