MicroPDF417 is a multi-row
symbology which may be utilized by applications needing to encode a moderate
amount of data in a two-dimensional (2D) symbol (up to 150 bytes, 250
alphanumeric characters, or 366 numeric digits), and when minimizing symbol
size is a primary concern. MicroPDF417 is based on
PDF417 standard. MicroPDF417, unlike PDF417, may only be printed in
certain defined combinations of rows, columns, and error correction codewords,
up to a maximum of four data columns by 44 rows.
The data is encoded using one of three compaction modes: Text compaction mode,
Binary compaction mode, and Numeric compaction mode.
Barcode Professional products support the following
MicroPDF417 Compaction modes
-
Text:
It allows encoding all printable ASCII characters, i.e. values from 32 to 126
inclusive in accordance with ISO/IEC 646, as well as selected control
characters such as TAB (horizontal tab ASCII 9), LF (NL line feed, new line
ASCII 10) and CR (carriage return ASCII 13).
-
Binary:
It allows encoding all 256 possible 8-bit byte values (ISO/IEC 8859-1). This
includes all ASCII characters value from 0 to 127 inclusive and provides for
international character set support.
-
Numeric:
It allows efficient encoding of numeric data strings.
-
Auto: It switches between Text, Binary and Numeric modes in order to
minimize the number of codewords to be encoded.
Structured Append
MicroPDF417 uses the
Macro PDF417 mechanism for Structured Append. This mechanism allows
files of data to be represented logically and consecutively in a number of
MicroPDF417 symbols. Up to 99 999 different MicroPDF417 symbols can be so
linked or concatenated and be scanned in any sequence to enable the original
data file to be correctly reconstructed.
Sample of a Micro PDF417 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 Micro PDF417 barcode image, please follow
these steps:
-
Set the Symbology property to MicroPdf417
-
Set the Pdf417CompactionType property to:
-
Text:
It allows encoding all printable ASCII characters, i.e. values from 32 to 126
inclusive in accordance with ISO/IEC 646, as well as selected control
characters such as TAB (horizontal tab ASCII 9), LF (NL line feed, new line
ASCII 10) and CR (carriage return ASCII 13).
-
Binary:
It allows encoding all 256 possible 8-bit byte values. This includes all ASCII
characters value from 0 to 127 inclusive and provides for international
character set support.
-
Numeric:
It allows efficient encoding of numeric data strings.
-
Auto: It switches between Text, Binary and Numeric modes in order to
minimize the number of codewords to be encoded.
-
Setting up dimensions and quiet zones:
-
In our PDF417 implementation the BarHeight property is calculated as BarWidth
* BarRatio
-
Set the BarWidth
property (Value is expressed in Inches)
-
Set the BarRatio property to an integer greater than or equal to 2
-
Set the MicroPdf417Version property to the predefined combination of
columns and rows. Specify Auto
so that Barcode Professional can determine it automatically based on the value
to encode.
-
Set the QuietZoneWidth
property to double of BarWidth (Value is expressed in Inches)
-
Set the TopMargin and BottomMargin properties to double of
BarWidth (Values are expressed in Inches)
-
Setting up the value to encode:
-
For single MicroPDF417 symbol:
-
Set the Code property with the value to encode
-
For Structured Append MicroPDF417 symbols:
-
Split the value to encode in N
segments.
-
Set the Pdf417SegmentCount to N
-
Set the Code property with the value to encode. You will have to set up
the Code property N times
to each segment's content.
-
Set the Pdf417SegmentIndex property to the current segment index you are
encoding. It will be a value ranging from 0 to N-1
-
Set the Pdf417FileId property to the File ID of the Micro PDF417 symbol.
Its value must be a sequence of codewords (Each codeword value must be a number
between 000 and 899) and must be the same for all data segments.
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 Micro PDF417 barcode image, please follow these steps:
- Set the Symbology property to MicroPdf417
- Set the Pdf417CompactionType property to:
- Text: It allows encoding all printable ASCII characters, i.e. values from 32 to 126 inclusive in accordance with ISO/IEC 646, as well as selected control characters such as TAB (horizontal tab ASCII 9), LF (NL line feed, new line ASCII 10) and CR (carriage return ASCII 13).
- Binary: It allows encoding all 256 possible 8-bit byte values. This includes all ASCII characters value from 0 to 127 inclusive and provides for international character set support.
- Numeric: It allows efficient encoding of numeric data strings.
- Auto: It switches between Text, Binary and Numeric modes in order to minimize the number of codewords to be encoded.
-
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.
- In our PDF417 implementation the BarHeight property is calculated as BarWidth * BarRatio
- Set the BarWidth property (Value is expressed in Inches)
- Set the BarRatio property to an integer greater than or equal to 2
- Set the MicroPdf417Version property to the predefined combination of columns and rows. Specify Auto so that Barcode Professional can determine it automatically based on the value to encode.
- Set the QuietZone property to double of BarWidth (Value is expressed in Inches)
- Setting up the value to encode:
- For single MicroPDF417 symbol:
- Set the Code property with the value to encode
- For Structured Append MicroPDF417 symbols:
- Split the value to encode in N segments.
- Set the Pdf417SegmentCount to N
- Set the Code property with the value to encode. You will have to set up the Code property N times to each segment's content.
- Set the Pdf417SegmentIndex property to the current segment index you are encoding. It will be a value ranging from 0 to N-1
- Set the Pdf417FileId property to the File ID of the Micro PDF417 symbol. Its value must be a sequence of codewords (Each codeword value must be a number between 000 and 899) and must be the same for all data segments.
Example of a single Micro PDF417 barcode image
Code property =
ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 and
BarRatio
property =
4 and
MicroPdf417Version property =
V4X10 and
Pdf417CompactionType
property =
Auto will produce the following barcode image: