QR Code is a kind of 2-D
(two-dimensional) symbology developed by Denso Wave (a division of Denso
Corporation at the time) and released in 1994 with the primary aim of being a
symbol that is easily interpreted by scanner equipment.
QR Code is capable of handling all types of data, such as numeric and
alphabetic characters, Kanji, Kana, Hiragana, symbols, binary, and control
codes.
The symbol versions of QR Code range from Version 1 to Version 40. Each version
has a different module configuration or number of modules (the module refers to
the black and white dots that make up QR Code). "Module configuration" refers
to the number of modules contained in a symbol, commencing with Version 1 (21 x
21 modules) up to Version 40 (177 x 177 modules). Each higher version number
comprises 4 additional modules per side. Each QR Code symbol version has the
maximum data capacity according to the amount of data, character type and error
correction level. In other words, as the amount of data increases, more modules
are required to comprise QR Code, resulting in larger QR Code symbols.
QR Code has error correction capability to restore data if the code is dirty or
damaged. Four error correction levels are available for users to choose
according to the operating environment. Raising this level improves error
correction capability but also increases the amount of data QR Code size. To
select error correction level, various factors such as the operating
environment and QR Code size need to be considered. Level Q or H may be
selected for factory environment where QR Code gets dirty, whereas Level L may
be selected for clean environment with the large amount of data. Typically,
Level M (15%) is most frequently selected. The QR Code error correction feature
is implemented by adding a Reed-Solomon Code to the original data.
QR Code implementation in Barcode Professional supports FNC1 and Extended
Channel Interpretation (ECI).
Sample of a QR Code barcode
Note: Please refer to the Class
Reference documentation for more information about the properties and methods
stated in this document.
In order to get a QR Code barcode image, please follow these
steps:
-
Set the Symbology property to QRCode
-
Set the QRCodeVersion property
-
Set the QRCodeErrorCorrectionLevel property
-
Set the QRCodeEncoding property
-
Setting up dimensions and quiet zones:
-
Set the QRCodeModuleSize property (Value is expressed in Inches)
-
Set the QuietZoneWidth property (Value is expressed in Inches)
-
Set the TopMargin and BottomMargin properties (Values are
expressed in Inches)
-
Set the Code property with the value to encode
-
If desired, you can use the tilde character "~" to specify special characters
in the input data. To do that you must set the QRCodeProcessTilde property
to True. Read more about how it works.
Note: Please refer to the Class
Reference documentation for more information about the properties and methods
stated in this document.
In order to get a QR Code barcode image, please follow these
steps:
-
Set the Symbology property to QRCode
-
Set the QRCodeVersion property
-
Set the QRCodeErrorCorrectionLevel property
-
Set the QRCodeEncoding property
-
Setting up dimensions and quiet zones:
All values for barcode dimensions are expressed
in INCHES by default. However, Barcode Professional supports other unit
of measurement such as Millimeter, Centimeter, and Mils.
For modifying the unit of measurement for barcoding, please set up the BarcodeUnit
property as needed.
-
Set the QRCodeModuleSize property (Value is expressed in Inches)
-
Set the QuietZone property (Value is expressed in Inches)
-
Set the TopMargin and BottomMargin properties (Values are
expressed in Inches)
-
Set the Code property with the value to encode
-
If desired, you can use the tilde character "~" to specify special characters
in the input data. To do that you must set the QRCodeProcessTilde property
to True. Read more about how it works.
When working with QR Code tilde processing keep in mind the
following rules:
-
~1: is used to represent the FNC1 code
-
~7NNNNNN: is used to specify the Extended Channel Interpretation (ECI) and
NNNNNN is a value between 000000 and 999999. Default is ECI 000003 which
represents the ISO 8859-1 Latin Alphabet No. 1
-
~dNNN: is used to represent a byte value in decimal notation. NNN must be a
numeric value ranging from 000 to 255
-
~hXX: is used to represent a byte value in hexadecimal notation. XX must be a
hexadecimal value ranging from 00 to FF
-
~kXXXX: is used to represent a Kanji double-byte value in hexadecimal notation.
XXXX must be a hexadecimal value of Shift JIS Kanji characters according to JIS
X 0208:1997, Annex 1.