SANS 24728-2008 Information technology - Automatic identification and data capture techniques - MicroPDF417 bar code symbology specification《信息技术 自动标识和数据收集技术 MicroPDF417条形码符号规范》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21874-4 SANS 24728:2008Edition 1ISO/IEC 24728:2006Edition 1SOUTH AFRICAN NATIONAL STANDARD Information technology Automatic identification

4、 and data capture techniques MicroPDF417 bar code symbology specification Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This national standard is the identical implementation of ISO/IEC 24

5、728:2006 and is adopted with the permission of the International Organization for Standardization and the International Electrotechnical Commission. SANS 24728:2008 Edition 1 ISO/IEC 24728:2006 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approve

6、d by National Committee SABS SC 71K, Information technology Automatic identification and data capture techniques, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September 2008. Reference numberISO

7、/IEC 24728:2006(E)ISO/IEC 2006INTERNATIONAL STANDARD ISO/IEC24728First edition2006-06-01Information technology Automatic identification and data capture techniques MicroPDF417 bar code symbology specification Technologies de linformation Techniques didentification automatique et de capture des donne

8、s Spcifications pour la symbologie de code barres MicroPDF417 SANS 24728:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 24728:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensin

9、g policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Ce

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11、aken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2006 All rights reserved. Unless otherwise specified, no part of this publication may be repr

12、oduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22

13、749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2006 All rights reservedSANS 24728:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 24728:2006(E) ISO/IEC 2006 All rights r

14、eserved iiiContents Page Foreword vi Introduction vii 1 Scope 1 2 Normative references 1 3 Terms and definitions .2 4 Symbols, operations and abbreviated terms4 4.1 Symbols 4 4.2 Mathematical operations.5 4.3 Abbreviated terms .5 5 Requirements.5 5.1 Symbology characteristics .5 5.1.1 Basic characte

15、ristics.5 5.1.2 Summary of additional features.6 5.2 Symbol structure .7 5.2.1 MicroPDF417 symbol parameters7 5.2.2 Row and column combinations9 5.2.3 Row parameters.10 5.2.4 Codeword sequence10 5.2.5 MicroPDF417 Row Address Patterns.12 5.3 Basic encodation .14 5.3.1 Symbol character structure 14 5.

16、3.2 Start and Stop Patterns.15 5.4 High level (data) encodation.15 5.4.1 Function codewords15 5.4.2 Text Compaction mode .21 5.4.3 Byte Compaction mode.25 5.4.4 Numeric Compaction mode 27 5.4.5 Advice to select the appropriate compaction mode 28 5.4.6 Treatment of MicroPDF417 reserved codewords.29 5

17、5 Extended Channel Interpretation .29 5.5.1 Encoding the ECI assignment number30 5.5.2 Pre-assigned and default Extended Channel Interpretations .31 5.5.3 Encoding ECI sequences within compaction modes 31 5.5.4 Post-decode protocol33 5.6 Determining the codeword sequence33 5.7 Error detection and c

18、orrection.34 5.7.1 Number of error correction codewords.34 5.7.2 Error correction capacity 34 5.7.3 Defining the error correction codewords35 5.8 Dimensions.35 5.8.1 Minimum width of a module (X)35 5.8.2 Row height (Y)35 5.8.3 Quiet zones.35 5.9 Defining the symbol format 35 5.9.1 Defining the aspec

19、t ratio of the module 36 5.9.2 Defining the symbol matrix of rows and columns .36 5.10 Generating the error correction codewords .37 5.11 Low level encodation 39 5.11.1 Clusters.40 SANS 24728:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS

20、 .ISO/IEC 24728:2006(E) iv ISO/IEC 2006 All rights reserved5.11.2 Determining the symbol matrix . 40 5.11.3 Determining the values of the Row Address Patterns 40 5.11.4 Row encoding 46 5.12 Printing Row Address Patterns . 46 5.13 Structured Append 47 5.13.1 Compaction modes and Structured Append 47

21、5.13.2 ECIs and Structured Append . 47 5.14 User guidelines . 47 5.14.1 Human readable interpretation 47 5.14.2 Autodiscrimination capability 47 5.14.3 User-defined application parameters 48 5.14.4 MicroPDF417 symbol quality . 48 5.14.5 Separation of multiple symbols. 49 5.15 Reference decode algori

22、thm 49 5.16 Error detection and error correction procedure 49 5.17 Transmitted data . 49 5.17.1 Transmitted data in the basic (default) interpretation. 49 5.17.2 Transmission protocol for Extended Channel Interpretation (ECI) . 49 5.17.3 Transmitted data for Structured Append51 5.17.4 Transmission o

23、f reserved codewords using the ECI protocol. 51 5.17.5 Symbology identifier. 51 5.17.6 Transmission using older protocols. 51 Annex A (normative) Encoding/decoding table of PDF417 symbol character bar-space sequences. 52 Annex B (normative) The default character set for Byte Compaction mode . 67 Ann

24、ex C (normative) Byte Compaction mode encoding algorithm 68 Annex D (normative) Numeric Compaction mode encoding algorithm 70 Annex E (normative) Error correction 72 Annex F (normative) Tables of coefficients for calculating MicroPDF417 error correction codewords . 73 Annex G (normative) Text Compac

25、tion mode encoding algorithm. 77 Annex H (normative) Structured Append MicroPDF417 symbols . 78 H.1 Structured Append overview . 78 H.2 Structured Append syntax . 78 H.3 High level encoding considerations . 81 H.4 Encodation example . 81 H.5 Structured Append and the Extended Channel Interpretation

26、protocol . 82 H.6 Structured Append data transmission 83 Annex I (normative) Testing MicroPDF417 symbol quality 86 I.1 Overview of methodology 86 I.2 Test scans for scan reflectance profile 86 Annex J (normative) Reference decode algorithm for MicroPDF417 88 J.1 Phase 1: Initialization 88 J.2 Phase

27、2: Filling the matrix 89 J.3 Phase 3: Interpretation . 90 J.4 Reference line-decode algorithm 91 Annex K (normative) Error correction procedures . 95 Annex L (normative) Symbology identifier 97 Annex M (normative) Transmission protocol for decoders conforming with original PDF417 standards. 98 M.1 B

28、asic Channel Mode . 98 M.2 GLI encoded symbols. 98 M.3 Structured Append symbols 100 M.4 Transmission of reserved codewords using the original PDF417 protocol . 101 SANS 24728:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 24728:

29、2006(E) ISO/IEC 2006 All rights reserved vM.5 Achieving compatibility between old and new PDF417 equipment .101 Annex N (informative) Algorithm to minimise the number of codewords.104 Annex O (informative) Guidelines to determine the symbol matrix.106 Annex P (informative) Calculating the coefficien

30、ts for generating the error correction codewords worked example 107 Annex Q (informative) Generating the error correction codewords worked example 109 Annex R (informative) Division circuit procedure for generating error correction codewords112 Annex S (informative) Additional guidelines for the use

31、 of MicroPDF417113 S.1 Autodiscrimination compatibility.113 S.2 Pixel-based printing 113 Bibliography 115 SANS 24728:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 24728:2006(E) vi ISO/IEC 2006 All rights reservedForeword ISO (th

32、e International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees e

33、stablished by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In

34、 the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standard

35、s. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements o

36、f this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 24728 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 31, Automatic Identification and data capture t

37、echniques. This International Standard contains many provisions which are identical with those of ISO/IEC 15438. SANS 24728:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 24728:2006(E) ISO/IEC 2006 All rights reserved viiIntroduc

38、tion MicroPDF417 is a multi-row symbology, derived from and closely based on PDF417. MicroPDF417 is designed for applications with a need for improved area efficiency but without the requirement for PDF417s maximum data capacity. A limited set of symbol sizes is available, together with a fixed leve

39、l of error correction for each symbol size. Module dimensions are user-specified to enable symbol production and reading by a wide variety of techniques. Since MicroPDF417s data character encodation, its error correction method, and many of its other symbol characteristics are, and are intended to r

40、emain, identical to those of PDF417, descriptions of these characteristics are quoted verbatim from the PDF417 symbology specification (ISO/IEC 15438) wherever appropriate, or with the appropriate modifications. For ease of cross-reference, this International Standard follows a similar document stru

41、cture, with minor differences in clause/subclause numbering, to ISO/IEC 15438. SANS 24728:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .This page is intentionally left blankSANS 24728:2008This s tandard may only be used and printed by a

42、pproved subscription and freemailing clients of the SABS .INTERNATIONAL STANDARD ISO/IEC 24728:2006(E) ISO/IEC 2006 All rights reserved 1Information technology Automatic identification and data capture techniques MicroPDF417 bar code symbology specification 1 Scope This International Standard specif

43、ies the requirements for the bar code symbology known as MicroPDF417. It specifies the MicroPDF417 symbology characteristics, data character encodation, symbol formats, dimensions, error correction rules, decoding algorithm, and a number of application parameters. 2 Normative references The followin

44、g referenced documents are indispensable 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 char

45、acter set for information interchange 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-dimensiona

46、l symbols ISO/IEC 15417, Information technology Automatic identification and data capture techniques Bar code symbology specification Code 128 ISO/IEC 15418, Information technology EAN/UCC Application Identifiers and Fact Data Identifiers and Maintenance ISO/IEC 15424, Information technology Automat

47、ic identification and data capture techniques Data Carrier Identifiers (including Symbology Identifiers) ISO/IEC 24723, Information technology Automatic identification and data capture techniques EAN.UCC Composite bar code symbology specification ISO/IEC 19762-1, Information technology Automatic ide

48、ntification and data capture (AIDC) techniques Harmonized vocabulary Part 1: General terms relating to AIDC ISO/IEC 19762-2, Information technology Automatic identification and data capture (AIDC) techniques Harmonized vocabulary Part 2: Optically readable media (ORM) AIM Inc. International Technica

49、l Standard: ITS/04-001, Extended Channel Interpretations Part 1: Identification Schemes and Protocols 1GS1 General Specification 21Published by AIM Global, 125 Warrendale-Bayne Road, Suite 100, Warrendale, PA 15086, USA. 2Published by GS1, Blue Tower, Avenue Louise 326, bte 10, B-1050 Brussels, Belgium. SANS 24728:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO/IEC 24728:2006(E) 2 ISO/IEC 2006 All rights reserved3