EN ISO/IEC 15438:2010

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, operations and abbreviated terms
5 Requirements
Annex A (normative) - Encoding/decoding table of PDF417
        symbol character bar-space sequences
Annex B (normative) - The default character set for Byte
        Compaction mode
Annex C (normative) - Byte Compaction mode encoding
        algorithm
Annex D (normative) - Numeric Compaction mode encoding
        algorithm
Annex E (normative) - User selection of error correction
        level
Annex F (normative) - Tables of coefficients for calculating
        PDF417 error correction codewords
Annex G (normative) - Compact PDF417
Annex H (normative) - Macro PDF417
Annex I (normative) - Testing PDF417 symbol quality
Annex J (normative) - Reference decode algorithm for PDF417
Annex K (normative) - Error correction procedures
Annex L (normative) - Symbology identifier
Annex M (normative) - Transmission protocol for decoders
        conforming with original PDF417 standards
Annex N (informative) - Algorithm to minimise the number
        of codewords
Annex O (informative) - Guidelines to determine the symbol
        matrix
Annex P (informative) - Calculating the coefficients for
        generating the error correction codewords
        - worked example
Annex Q (informative) - Generating the error correction
        codewords - worked example
Annex R (informative) - Division circuit procedure for
        generating error correction codewords
Annex S (informative) - Additional guidelines for the
        use of PDF417
Bibliography

The technology of bar coding is based on the recognition of patterns of bars and spaces of defined dimensions. There are various methods of encoding information in bar code form, known as symbologies, and the rules defining the translation of characters into bars and space patterns and other essential features are known as the symbology specification.ISO/IEC 15438:2006 specifies the requirements for the bar code symbology known as PDF417. It specifies PDF417 symbology characteristics, data character encodation, symbol formats, dimensions, error correction rules, reference decoding algorithm, and a number of application parameters.