EN ISO IEC 15438-2010 en Information technology - Automatic identification and data capture techniques - PDF417 bar code symbology specification《信息技术 自动识别和数据捕获技术》.pdf

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1、BRITISH STANDARDBS EN ISO/IEC 15438:2010Information technology Automatic identification and data capture techniques PDF417 bar code symbology specificationICS 35.040g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g

2、48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58National forewordThis British Standard is the UK implementation of EN ISO/IEC 15438:2010. It is identical to ISO/IEC 15438:2006. It supersedes BS ISO/IEC 15438:2006, which is withdrawn.The UK participation in its preparation was entrus

3、ted to Technical Committee IST/34, Automatic identification data capture techniques.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its

4、 correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO/IEC 15438:2010This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2006 BSI 2010ISBN 978 0 580 70516 8Amendments/corrigenda iss

5、ued since publicationDate Comments 30 September 2010 This corrigendum renumbers BS ISO/IEC 15438:2006 as BS EN ISO/IEC 15438:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO/IEC 15438 August 2010 ICS 35.040 Supersedes EN ISO/IEC 15438:2003English Version Information technology - Automati

6、c identification and data capture techniques - PDF417 bar code symbology specification (ISO/IEC 15438:2006) Technologies de linformation - Techniques automatiques didentification et de capture des donnes - Spcifications pour la symbologie de code barres PDF417 (ISO/IEC 15438:2006) Informationstechni

7、k - Verfahren der automatischen Identifikation und Datenerfassung - Spezifikation der Strichcodesymbologie PDF417 (ISO/IEC 15438:2006) This European Standard was approved by CEN on 29 July 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions

8、for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three offi

9、cial versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria

10、, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEA

11、N COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO/IEC 15438:2010: EForeword T

12、he text of ISO/IEC 15438:2006 has been prepared by Technical Committee ISO/IEC JTC 1 “Information technology” of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) and has been taken over as EN ISO/IEC 15438:2010 by Technical Committee CE

13、N/TC 225 “AIDC technologies” the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2011, and conflicting national standards shall be withdrawn at the la

14、test by February 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO/IEC 15438:2003. According to th

15、e CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia

16、, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO/IEC 15438:2006 has been approved by CEN as a EN ISO/IEC 15438:2010 without any modification. BS EN ISO/IEC 15438:2

17、010EN ISO/IEC 15438:2010 (E)ii iiiContents Page Introduction . vi 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Symbols, operations and abbreviated terms. 3 4.1 Symbols . 3 4.2 Mathematical operations 4 4.3 Abbreviated terms 4 5 Requirements 5 5.1 Symbology characteristics 5 5.

18、1.1 Basic characteristics 5 5.1.2 Summary of additional features 6 5.2 Symbol structure 7 5.2.1 PDF417 symbol parameters. 7 5.2.2 Row parameters 7 5.2.3 Codeword sequence. 7 5.3 Basic encodation 8 5.3.1 Symbol character structure . 8 5.3.2 Start and stop characters 9 5.4 High level (data) encodation

19、 10 5.4.1 Function codewords. 10 5.4.2 Text Compaction mode 13 5.4.3 Byte Compaction mode 17 5.4.4 Numeric Compaction mode . 19 5.4.5 Advice to select the appropriate compaction mode . 21 5.4.6 Treatment of PDF417 reserved codewords 21 5.5 Extended Channel Interpretation 21 5.5.1 Encoding the ECI as

20、signment number. 22 5.5.2 Pre-assigned and default Extended Channel Interpretations 23 5.5.3 Encoding ECI sequences within compaction modes . 23 5.5.4 Post-decode protocol. 25 5.6 Determining the codeword sequence. 25 5.7 Error detection and correction 26 5.7.1 Error correction level 26 5.7.2 Error

21、correction capacity . 26 5.7.3 Defining the error correction codewords. 27 5.8 Dimensions 27 5.8.1 Minimum width of a module (X). 27 5.8.2 Row height (Y) 28 5.8.3 Quiet zones 28 5.9 Defining the symbol format . 28 5.9.1 Defining the aspect ratio of the module . 28 5.9.2 Defining the symbol matrix of

22、 rows and columns 28 5.10 Generating the error correction codewords 30 5.11 Low level encodation 31 5.11.1 Clusters 32 5.11.2 Determining the symbol matrix . 32 5.11.3 Determining the values of the left and right row indicators. 32 BS EN ISO/IEC 15438:2010EN ISO/IEC 15438:2010 (E)iv 5.11.4 Row encod

23、ing 33 5.12 Compact PDF417. 33 5.13 Macro PDF417 33 5.13.1 Compaction modes and Macro PDF417 . 34 5.13.2 ECIs and Macro PDF417 . 34 5.14 User guidelines . 34 5.14.1 Human readable interpretation 34 5.14.2 Autodiscrimination capability 34 5.14.3 User-defined application parameters 34 5.14.4 PDF417 sy

24、mbol quality. 35 5.15 Reference decode algorithm 35 5.16 Error detection and error correction procedure 35 5.17 Transmitted data . 35 5.17.1 Transmitted data in the basic (default) interpretation. 35 5.17.2 Transmission protocol for Extended Channel Interpretation (ECI) . 36 5.17.3 Transmitted data

25、for Macro PDF417 . 37 5.17.4 Transmission of reserved codewords using the ECI protocol. 37 5.17.5 Symbology identifier. 37 5.17.6 Transmission using older protocols. 37 Annex A (normative) Encoding/decoding table of PDF417 symbol character bar-space sequences. 39 Annex B (normative) The default char

26、acter set for Byte Compaction mode . 55 Annex C (normative) Byte Compaction mode encoding algorithm 56 Annex D (normative) Numeric Compaction mode encoding algorithm 58 Annex E (normative) User selection of error correction level . 60 E.1 Recommended minimum error correction level 60 E.2 Other user

27、consideration of the error correction level . 60 Annex F (normative) Tables of coefficients for calculating PDF417 error correction codewords 61 Annex G (normative) Compact PDF417 . 66 G.1 Description. 66 G.2 Print quality 66 Annex H (normative) Macro PDF417. 67 H.1 Macro PDF417 overview . 67 H.2 Ma

28、cro PDF417 syntax . 67 H.3 High level encoding considerations . 70 H.4 Encodation example . 70 H.5 Macro PDF417 and the Extended Channel Interpretation protocol . 71 H.6 Macro PDF417 data transmission . 72 Annex I (normative) Testing PDF417 symbol quality 75 Annex J (normative) Reference decode algo

29、rithm for PDF417 . 76 J.1 Initialisation . 76 J.2 Reference decode algorithm for line decoding 76 J.3 Filling the matrix . 78 J.4 Interpretation . 79 Annex K (normative) Error correction procedures . 80 Annex L (normative) Symbology identifier 82 Annex M (normative) Transmission protocol for decoder

30、s conforming with original PDF417 standards . 83 M.1 Basic Channel mode. 83 M.2 GLI encoded symbols. 83 M.3 Macro PDF417 symbols 85 M.4 Transmission of reserved codewords using the original PDF417 protocol . 86 M.5 Achieving compatibility between old and new PDF417 equipment. 86 Annex N (informative

31、) Algorithm to minimise the number of codewords 89 BS EN ISO/IEC 15438:2010EN ISO/IEC 15438:2010 (E)vAnnex O (informative) Guidelines to determine the symbol matrix 91 O.1 Parameters affecting the determination of the matrix 91 O.2 Guidelines should any parameters not be achieved. 94 Annex P (inform

32、ative) Calculating the coefficients for generating the error correction codewords worked example. 95 Annex Q (informative) Generating the error correction codewords - worked example 96 Annex R (informative) Division circuit procedure for generating error correction codewords. 99 Annex S (informative

33、) Additional guidelines for the use of PDF417. 100 S.1 Autodiscrimination compatibility 100 S.2 Pixel-based printing 100 Bibliography . 102 BS EN ISO/IEC 15438:2010EN ISO/IEC 15438:2010 (E)vi BS EN ISO/IEC 15438:2010EN ISO/IEC 15438:2010 (E)Introduction The technology of bar coding is based on the r

34、ecognition 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 specifi

35、cation. Manufacturers of bar code equipment and users of bar code technology require publicly available standard symbology specifications to which they can refer when developing equipment and application standards. It is the intent and understanding of ISO/IEC that the symbology presented in this In

36、ternational Standard is entirely in the public domain and free of all user restrictions, licences and fees. 1Information technology Automatic identification and data capture techniques PDF417 bar code symbology specification 1 Scope This International Standard specifies the requirements for the bar

37、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. 2 Normative references The following referenced documents are indispensa

38、ble for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 646:1991, Information technology ISO 7-bit coded character set for information interchange

39、 ISO/IEC 8859-1, Information technology 8-bit single-byte coded graphic character sets Part 1: Latin alphabet No. 1 ISO/IEC 15415, Information technology Automatic identification and data capture techniques Bar code print quality test specification Two-dimensional symbols ISO/IEC 15424, Information

40、technology Automatic identification and data capture techniques Data Carrier Identifiers (including Symbology Identifiers) ISO/IEC 19762-1, Information technology Automatic identification and data capture (AIDC) techniques Harmonized vocabulary Part 1: General terms relating to AIDC ISO/IEC 19762-2,

41、 Information technology Automatic identification and data capture (AIDC) techniques Part 2: Optically readable media (ORM) ISO/IEC 24723, Information technology Automatic identification and data capture techniques EAN.UCC Composite bar code symbology specification AIM Inc. International Technical St

42、andard: ITS/04-001, Extended Channel Interpretations - Part 1: Identification Schemes and Protocols 11Published by AIM Global, 125 Warrendale-Bayne Road, Suite 100, Warrendale, PA 15086, USA. BS EN ISO/IEC 15438:2010EN ISO/IEC 15438:2010 (E)2 3 Terms and definitions For the purposes of this document

43、, the terms and definitions given in ISO/IEC 19762-1, ISO/IEC 19762-2 and the following apply. 3.1 basic channel model standard system for encoding and transmitting bar code data where data message bytes are output from the decoder but no control information about the message is transmitted NOTE A d

44、ecoder complying with this model operates in Basic Channel Mode. 3.2 bar-space sequence sequence which represents the module widths of the elements of a symbol character 3.3 cluster any of three mutually exclusive subsets of PDF417 symbol characters; the symbol characters in a given cluster conform

45、with particular structural rules which are used in decoding the symbology 3.4 compaction mode any of three data compaction algorithms in PDF417 (Text, Numeric and Byte Compaction modes) which are used to map 8-bit data bytes efficiently to PDF417 codewords 3.5 e-distance distance from leading edge o

46、f an element to leading edge of the next similar element, or from trailing edge to trailing edge 3.6 error correction codeword codeword which encodes a value derived from the error correction codeword algorithm to enable decode errors to be detected and, depending on the error correction level, to b

47、e corrected 3.7 Extended Channel Interpretation ECI procedure within some symbologies, including PDF417, to replace the default interpretation with another interpretation in a reliable manner NOTE The interpretation intended prior to producing the symbol can be retrieved after decoding the scanned s

48、ymbol to recreate the data message in its original format. 3.8 Extended Channel Model system for encoding and transmitting both data message bytes and control information about the message, the control information being communicated using Extended Channel Interpretation (ECI) escape sequences NOTE A

49、 decoder complying with this model operates in Extended Channel Mode. 3.9 function codeword codeword which initiates a particular operation within a symbology, for example to switch between data encoding sets, to invoke a compaction scheme, to program the reader, or to invoke Extended Channel Interpretations BS EN ISO/IEC 15438:2010EN ISO/IEC 15438:2010 (E)33.10 Global Label Identifier GLI procedure in the PDF417 symbology which behaves in a similar manner to Extended Channel Interpretation NOTE The GLI system was the PDF417-specific pr