GB/T 18347-2001 English PDF (GBT18347-2001)

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GB/T 18347-2001: Code 128
GB/T 18347-2001
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 35.040
A 24
idt ISO/IEC 15417:2000
Code 128
ISSUED ON: APRIL 09, 2001
IMPLEMENTED ON: OCTOBER 01, 2001
Issued by: National Bureau of Quality and Technical Supervision
Table of Contents
Foreword ... 3 
ISO Foreword ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 5 
4 Technical requirements ... 6 
4.1 Symbology characteristics ... 6 
4.2 Symbol structure ... 6 
4.3 Character assignments ... 7 
4.4 Dimensional requirements ... 14 
4.5 Reference decode algorithm ... 15 
4.6 Symbol quality ... 18 
4.7 User-defined application parameters ... 19 
4.8 Transmitted data ... 20 
Annex A (normative) Additional features of Code 128 ... 21 
Annex B (normative) Special considerations relating to Function Code 1 (FNC1)
... 23 
Annex C (normative) Symbology identifiers ... 25 
Annex D (informative) Relationship of symbol character value to ASCII value
... 26 
Annex E (informative) Use of Start, Code Set and Shift characters to minimize
symbol width ... 27 
Annex F (informative) GB/T 15273.1 (Latin Alphabet no. 1) character set ... 29 
Annex G (informative) User-defined application parameters ... 31 
Annex H (informative) Guidelines for the use of Code 128 ... 32 
Foreword
This Standard identically adopts ISO/IEC 15417:2000 “Information technology
- Automatic identification and data capture techniques - Bar code symbology
specification - Code 128”. Code 128 is a one-dimensional bar code that can
express a variety of information. It can represent all characters in the ASCII
character set and extended ASCII character set. Among all one-dimensional
barcode symbology, it is the symbology that represents the most information.
Therefore, code 128 is suitable for automatic data collection in various fields.
Since code 128 has a wide range of applications, it has been widely used in the
world, and its technology is relatively mature, so this Standard identically adopts
the international standard. GB/T 15425-1994 " Bar code 128 for trade unit"
formulated in 1994 is a subset of code 128. It is completely consistent with code
128 in terms of technical content such as bar space combination, character set.
But its scope of application is limited to EAN • UCC system. In order to meet
the application requirements of code 128 in fields other than EAN • UCC (such
as medical and health, industrial production), this Standard is formulated.
Annex A, Annex B and Annex C of this Standard are normative.
Annex D, Annex E, Annex F, Annex G and Annex H of this Standard are
informative.
This Standard was proposed by and shall be under the jurisdiction of China
Article Numbering Center.
The drafting organizations of this Standard: China Article Numbering Center.
Main drafters of this Standard: Guo Weihua, Zhang Chenghai, Li Sucai, Huang
Zexia.
Code 128
1 Scope
This Standard defines the technical requirements for the bar code symbology
known as Code 128, including Code 128 symbology characteristics, data
character encodation, dimensions, decoding algorithms and the application
parameters which need to be defined by users as well as symbology identifier
prefix string.
This Standard is applicable to automatic data collection in various fields.
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/T 12905-2000, Bar coding terminology
GB 13000.1-1993, Information technology - Universal multiple - Octet coded
character set (UCS) - Part 1: Architecture and basic multilingual plane (idt
ISO/IEC 10646-1:1993)
GB/T 15273.1-1994 Information processing - 8-bit single-byte coded graphic
character sets - Part 1: Latin alphabet No.1
ISO/IEC 15424, Information technology - Automatic identification and data
capture techniques - Data carrier/symbology Identifiers
ISO/IEC 15416, Information technology - Automatic identification and data
capture techniques - Bar code print quality test specification - Linear symbols
3 Terms and definitions
This Standard uses the terms and definitions in GB/T 12905-2000.