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BS ISO/IEC 24778:2024

BS ISO/IEC 24778:2024

$198.66

Information technology. Automatic identification and data capture techniques. Aztec Code bar code symbology specification

Published By Publication Date Number of Pages
BSI 2024 60
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PDF Catalog

PDF Pages PDF Title
2 undefined
8 Foreword
9 Introduction
11 1 Scope
2 Normative references
3 Terms, definitions, symbols and functions
3.1 Terms and definitions
12 3.2 Symbols and functions
3.2.1 Mathematical symbols
3.2.2 Mathematical functions and operations
13 4 Symbology characteristics
4.1 Basic characteristics
4.2 Summary of additional features
14 5 Symbol description
5.1 Basic Aztec Code properties
5.2 Symbol structure
5.2.1 Aztec code layout
16 5.2.2 Core Symbol
17 5.2.3 Data fields
5.3 Symbol character structure and sequence
19 5.4 Symbol size and capacity
20 6 General encodation procedures
21 7 Symbol structure
7.1 Fixed pattern structures
7.1.1 Fixed pattern types
7.1.2 Finder
7.1.3 Orientation bits
7.1.4 Reference grid
7.2 Mode message encoding and structure
7.2.1 Mode message
7.2.2 Symbol size designator
22 7.2.3 Message length designator
7.2.4 Error encodation for the mode message
7.2.5 Module placement for the mode message
7.3 Data message encoding and structure
7.3.1 Data message
23 7.3.2 Source message encoding
25 7.3.3 Error encodation for the data message
7.3.4 Module placement for the data message
26 8 Structured Append
9 Reader initialization symbols
10 Extended Channel Interpretation (ECI)
10.1 ECI basic information and references
27 10.2 Encoding ECIs in Aztec Code
10.3 Code sets and ECIs
10.4 ECIs and Structured Append
10.5 Post-decode protocol
11 User considerations
11.1 Choice of data and error correction level
11.2 User selection of encoded message
28 11.3 User selection of minimum error correction level
11.4 User selection of Structured Append
11.5 User selection of optional symbol formats
12 Dimensions
13 User guidelines
13.1 Human readable interpretation
29 13.2 Autodiscrimination capability
13.3 User-defined application parameters
14 Reference decode algorithm
14.1 General
30 14.2 Finding candidate symbols
14.3 Processing the bullseye image
14.4 Decoding the Core Symbol
14.4.1 Bullseye mapping of module centres
14.4.2 Mapping and sampling module centres
31 14.4.3 Determining video sign and symbol format
14.4.4 Determining symbol orientation and mirror image reversal
14.4.5 Decoding the mode message
14.5 Decoding the data message
14.5.1 General
14.5.2 Mapping the data layers
14.5.3 Assembling the codewords
32 14.5.4 Checking the codewords
14.6 Translating the datawords
14.6.1 Bit stream conversion and interpretation
14.6.2 Creating the data bit stream
14.6.3 Interpreting the bit stream
15 Symbol quality
15.1 Quality assessment method
15.2 Symbol quality parameters
15.2.1 Fixed pattern damage (FPD)
33 15.2.2 Axial non-uniformity (AN)
15.2.3 Unused error correction
15.2.4 ā€œPrintā€ growth
15.2.5 Grid non-uniformity
15.3 Symbol print quality grading
15.3.1 Symbol grade
15.4 Additional print process control measurements
16 Transmitted data
16.1 Basic interpretation
34 16.2 Protocol for FNC1
16.3 Protocol for ECIs
16.4 Symbology identifier
16.5 Transmitted data example
36 Annex A (normative) Aztec Runes
38 Annex B (normative) Error detection and correction
41 Annex C (normative) Topological bullseye search algorithm
45 Annex D (normative) Linear crystal growing algorithm
46 Annex E (normative) Fixed pattern damage (FPD) grading
48 Annex F (normative) Symbology identifiers
49 Annex G (informative) Aztec Code symbol encoding example
53 Annex H (informative) Achieving minimum symbol size
56 Annex I (informative) Useful process control techniques
58 Bibliography

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BS ISO/IEC 24778:2024
$198.66