1 Scope
This Standard specifies the technical requirements for the Code 128, including Code 128 characteristics, data character encodation, dimensions, decoding algorithms, the application parameters which need to be defined by users and the Symbology Identifier prefix strings.
This Standard is applicable to the automatic data capture in various fields.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated are valid. All standards are subject to revision, and parties using the standard shall investigate the possibility of applying the latest edition of the standards indicated below.
GB/T1988-1998 Information technology - ISO 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 l0646-1: 1993)
GB/T 15273.1-1994 Information technology - 8-bit single-byte coded graphic character sets - Part 1: Latin alphabet No. 1 (idt ISO 8859-l: 1987)
ISO/IEC 15424 Information technology - Automatic identification and data capture techniques - Data carrier/symbology Identifiers
ISO/1EC l5416 Information technology - Automatic identification and data capture techniques - Bar code print quality test specification - Linear symbols
3 Terms and Definitions
For the purposes of this Standard, the terms and definitions given in GB/T 12905-2000 apply.
4 Requirements
Foreword i
ISO Foreword ii
1 Scope
2 Normative References
3 Terms and Definitions
4 Requirements
4.1 Symbology Characteristics
4.2 Symbol Structure
4.3 Symbolic Representation
4.4 Dimensional Requirements
4.5 Reference Decode Algorithm
4.6 Symbol Quality
4.7 User-defined Application Parameters
4.8 Transmitted Data
Annex A (Normative) Additional Features of Code 128
Annex B (Normative) Special Considerations Relating to Function Code 1 (FNC1)
Annex C (Normative) Symbology Identifiers
Annex D (Informative) Relationship of Symbol Character Value to ASCII Value
Annex E (Informative) Rules of Minimizing Symbol Width
Annex F (Informative) GB/T 15273.1 (Latin Alphabet No. 1) Character Set
Annex G (Informative) User-defined Application Parameters
Annex H (Informative) Guidelines for the Use of Code 128
