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1、 Reference number ISO/IEC 18004:2006(E)© ISO/IEC 2006INTERNATIONAL STANDARD ISO/IEC 18004Second edition 2006-09-01Information technology — Automatic identification and data capture techniques — QR Code 2005 bar

2、code symbology specification Technologies de l'information — Techniques d'identification automatique et de capture des données — Spécification de la symbologie de code à barres QR Code 2005 ISO/

3、IEC 18004:2006(E) © ISO/IEC 2006 — All rights reserved iiiContents Page Foreword.....................................................................................................................................

4、....................... vi Introduction ....................................................................................................................................................... vi 1 Scope ................

5、..................................................................................................................................... 1 2 Conformance......................................................................

6、................................................................... 1 3 Normative references ........................................................................................................................... 1

7、4 Terms and definitions, mathematical and logical symbols, abbreviations and conventions ...... 2 4.1 Terms and definitions..............................................................................................

8、............................. 2 4.2 Mathematical and logical symbols...................................................................................................... 4 4.3 Abbreviations..........................

9、.............................................................................................................. 4 4.4 Conventions .........................................................................................

10、................................................. 5 4.4.1 Module positions .................................................................................................................................. 5 4.4.2 By

11、te notation......................................................................................................................................... 5 4.4.3 Version references...........................................

12、..................................................................................... 5 5 Symbol description...............................................................................................................

13、................ 5 5.1 Basic characteristics............................................................................................................................ 5 5.2 Summary of additional features...........

14、............................................................................................... 7 5.3 Symbol structure ...................................................................................................

15、............................... 8 5.3.1 Symbol Versions and sizes ................................................................................................................. 9 5.3.2 Finder pattern..............

16、........................................................................................................................ 16 5.3.3 Separator ..............................................................................

17、............................................................... 17 5.3.4 Timing pattern...................................................................................................................................

18、.. 17 5.3.5 Alignment patterns ............................................................................................................................. 17 5.3.6 Encoding region...................................

19、............................................................................................... 17 5.3.7 Quiet zone.......................................................................................................

20、..................................... 17 6 Requirements...................................................................................................................................... 18 6.1 Encode procedure ove

21、rview.............................................................................................................. 18 6.2 Data analysis..................................................................................

22、..................................................... 20 6.3 Modes................................................................................................................................................... 20

23、6.3.1 Extended Channel Interpretation (ECI) mode .................................................................................. 20 6.3.2 Numeric mode................................................................

24、..................................................................... 20 6.3.3 Alphanumeric mode .........................................................................................................................

25、.. 20 6.3.4 Byte mode............................................................................................................................................ 20 6.3.5 Kanji mode...................................

26、........................................................................................................ 21 6.3.6 Mixing modes............................................................................................

27、.......................................... 21 6.3.7 Structured Append mode................................................................................................................... 21 6.3.8 FNC1 mode .......

28、................................................................................................................................... 21 6.4 Data encoding .................................................................

29、.................................................................... 22 6.4.1 Sequence of data ...........................................................................................................................

30、..... 22 6.4.2 Extended Channel Interpretation (ECI) mode .................................................................................. 23 6.4.3 Numeric mode......................................................

31、............................................................................... 25 6.4.4 Alphanumeric mode ...............................................................................................................

32、............ 26 6.4.5 Byte mode............................................................................................................................................ 27 6.4.6 Kanji mode.........................

33、.................................................................................................................. 29 6.4.7 Mixing modes..................................................................................

34、.................................................... 30 6.4.8 FNC1 modes ........................................................................................................................................ 30 6.4.

35、9 Terminator ........................................................................................................................................... 32 6.4.10 Bit stream to codeword conversion......................

36、............................................................................ 33 6.5 Error correction......................................................................................................................

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