ISO/IEC 18004-2000 pdf free.Information technology – Automatic identification and data capture techniques – Bar code symbology- QR Code.
ISO/IEC 18004 specifies the requirements for the symbology known as OR Code. It specifies the OR Code Model 2 symbology characteristics, data character encodation, symbol formats, dimensional characteristics, error correction rules, reference decoding algorithm, production quality requirements, and user-selectable application parameters, and defines in an annex the features of Model 1 symbols which differ from Model 2.
2 Conformance
OR Code symbols (and equipment designed to produce or read OR Code symbols) shall be considered as meeting this specification it they meet the requirements defined for either QR Code Model 2 or Model 1. It should be noted, however, that Model 2 ts the form of the symbology recommended for new and open systems applications.
3 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and lEG maintain registers of currently valid International Standards.
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 specifications — Linear symbols.
EN 1556. Bar Coding — Terminology.
JIS X 0201, JIS 8-bit Character Set for Information Interchange.
JIS X 0208-1997, Japanese Graphic Character Set for Information Interchange.
ANSI X3.4, Coded Character Sets — 7-bit American National Standard Code for Information Interchange (7-bit ASCII).
AIM International Technical Specification, Extended Channel Interpretations: Part 1: Identification scheme and protocol (referred to as ‘AIM ECI specification”).
4 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in EN 1556 and the following apply.
4.1 Alignment Pattern
fixed reference pattern in defined positions in a matrix symbology. which enab’es the decode software to re synchronise the coordinate mapping of the image modules in the event of moderate amounts of distortion of the image
4.2 Character Count Indicator
bit sequence which defines the data string length in a mode
4.3 ECI designator
six-digit number identifying a specific ECI assignment
4.4 encoding region
region of the symbol not occupied by function patterns and available for encodation of data and error correction codewords
4.5 Extended Channel Interpretation (ECI)
protocol used in some symbologies that allows the output data stream to have interpretations different from that of the default character set
4.6 Extension Pattern
in Model 1 symbols, a function pattern which does not encode data
4.7 Format Information
function pattern containing information on the error correction level applied to the symbol and on the masking pattern used, essential to enable the remainder of the encoding region to be decoded
4.8 function pattern
overhead component of the symbol required for location of the symbol or identification of its characteristics to assist in decoding
4.9 Mask Pattern Reference
three-bit identifier of tho masking patterns applied to the symbol.ISO/IEC 18004 pdf download.