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1. Enter
barcode data in Excel for print bulk labels. |
3. Generate sequence
numbers for make barcodes. |
2. Design barcode
label with text, logo. |
4. Print barcode
label sheet to Avery 5160, 5161, 5162 . . . |
5. Print barcode
label on command line. |
6. Add Ascii key to
barcode: Tab, Enter, File Separator. etc. |
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Right click each barcode to save to local.
Desktop version software can
export bulk barcode images to a folder |
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Barcode Technology - PDF417
Barcode
Hide the description |
PDF417 is a stacked linear
barcode format used in a variety
of applications such as
transport, identification cards,
and inventory management. "PDF"
stands for Portable Data File.
The "417" signifies that each
pattern in the code consists of
4 bars and spaces in a pattern
that is 17 units (modules) long.
The PDF417 symbology was
invented by Ynjiun P. Wang at
Symbol Technologies in 1991. |
Valid characters:
ASCII 1-255 |
The PDF417 is a 2D barcode. It
is based on stacked barcodes.
The characters are coded in code
words. A code
word consists of 17 modules,
which consist respectively of 4
strokes and 4 spaces.
The PDF417 is a very compact and
flexible code with variable
length. Up to 1108 bytes can be
coded.
A PDF417 symbol takes about four
times the area of a DataMatrix
or QR Code. |
PDF417 is used in many
applications by both commercial
and government organizations.
PDF417 is one of the
formats (along with Data Matrix)
that can be used to print
postage accepted by the United
States Postal Service. PDF417 is
also used by the airline
industry's Bar Coded Boarding
Pass (BCBP) standard as the 2D
bar code symbolism for paper
boarding passes. PDF417 is the
standard selected by the
Department of Homeland Security
as the machine readable zone
technology for RealID compliant
driver licenses and state issued
identification cards. PDF417
barcodes are also included on
visas and border crossing cards
issued by the State of Israel
(example). |
In addition to features typical
of two dimensional bar codes,
PDF417's capabilities include:
Linking. PDF417 symbols can link
to other symbols which are
scanned in sequence allowing
even more data to be stored.
User-specified dimensions. The
user can decide how wide the
narrowest vertical bar (X
dimension) is, and how tall the
rows are (Y dimension).
Public domain format. Anyone can
implement systems using this
format without any license. |
PDF417 is one of the many
barcode formats currently in
use. |
A Barcode is a method of
representing data in a visual,
machine-readable form. |
The barcode formats has two
categories: |
One-dimensional (1D) ---
Barcodes represented data by
varying the widths and spacings
of parallel lines. |
Two-dimensional (2D) --- Using
rectangles, dots, hexagons and
other geometric patterns to
represented data. |
PDF417 is 2D barcode.
PDF417 is variable with
no fixed length.
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The PDF417 bar code (also called
a symbol) consists of 3 to 90
rows, each of which is like a
small linear bar code. Each row
has:
a quiet zone. This is a mandated
minimum amount of white space
before the bar code begins.
a start pattern which identifies
the format as PDF417.
a "row left" codeword containing
information about the row (such
as the row number and error
correction level)
1¨C30 data codewords: Codewords
are a group of bars and spaces
representing one or more
numbers, letters, or other
symbols.
a "row right" codeword with more
information about the row.
a stop pattern.
another quiet zone.
All rows are the same width;
each row has the same number of
codewords..
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Of the 929 available code words,
900 are used for data, and 29
for special functions, such as
shifting between
major modes. The three major
modes encode different types of
data in different ways, and can
be mixed as necessary within a
single bar code: |
Byte: each group of 5 code words
represents 6 bytes. (Because
9005 > 2566.) Additional bytes
are encoded one per code word.
Numeric: n digits are encoded in
⌊n/3⌋+1 code words, up to a
maximum of 44 digits in 15 code
words.
Text: Each code word represents
two base-30 digits, which are
used by a system of four
submodes to represent the
printable ASCII characters (plus
CR, LF and HT):
Uppercase: A¨CZ, SP, Change to
lowercase, Change to mixed,
Interpret next digit as
punctuation
Lowercase: a¨Cz, SP, Interpret
next digit as uppercase, Change
to mixed, Interpret next digit
as punctuation
Mixed: 0¨C9, &, CR, HT, comma, :,
#, -, period, $, /, +, %, *, =,
^, Change to punctuation, SP,
Change to lowercase, Change to
uppercase, Interpret next digit
as punctuation
Punctuation: ;, <, >, @, [, \,
], _, `, ~, !, CR, HT, comma, :,
LF, -, period, $, /, ", |, *, (,
), ?, {, }, ', Change to
uppercase. |
Error Correction Level:
PDF417 uses a differently strong
error correction. It is used
according to the code length. By
use of less than 41 code words
the Error Correction level 2 is
used. From 41 to 160 code words
ECL3 is used. From 161 to 320
code words ECL4 is used. From
321 code words ECL5 is used. |
Human Readable:
Most barcodes display their
corresponding values below them,
which makes it possible to human
read and manually enter
the barcode values into the
equivalent system when the
barcode label is worn out and
cannot be read by the barcode
scanner. |
The Advantages of using
barcodes:
If you want to reduce costs and
save time, using barcodes is a
good choice. Whether you are a
company or a non-commercial
organization, to improve
efficiency and reduce overhead,
barcodes are a valuable and
viable option, which is
economical and reliable.
Using Barcode system eliminates
the possibility of human error.
The error rate of manually
entering data is
significantly higher than that
of scan barcodes. Barcode
scanning is fast and reliable,
and it takes much less time than
manual data entry. Especially
when using a QR code, hundreds
of characters can be read and
entered into your system
instantly.
Using a barcode system can make
the working process simple and
easy, so it can reduces the
employee training time. It only
takes a few minutes to master
the barcode scanner to
collecting data, employees no
need to familiar with the entire
inventory or pricing process.
This also reduces the cost of
employee training.
The bar code design and printing
cost are low. Generally
speaking, no matter how they are
used or where they are posted,
the cost is not high. They can
be customized economically, in a
variety of finishes and
materials.
The barcode system is very
versatile, it can be used for
any necessary data collection.
This may include pricing or
inventory information or
management information service
system. In addition, because
barcodes can be affixed to
almost any surface, they can be
used not only to track the
product itself, but also to
track the production process,
shipments and equipments.
Using barcode system will
improve the inventory control is
improved, it can track inventory
accurately, inventory levels can
be reduced it will lower the
rate of eavesdropping. The
location of the inventory and
device can also be tracked,
thereby reducing the time it
takes to find the inventory and
device.
The barcode system provide
better data. Because a barcode
can store various information
such as inventory and pricing,
especially when using QR Code,
it can store thousands of
characters, so the data stored
in the barcode can be quickly
obtained by the barcode reader,
this fast turnaround ensures
that time is not wasted on data
entry or retrieval. In addition,
the barcode can be customized to
include other relevant
information as needed. They
provide fast and reliable data
for various applications.
When barcodes are used in
management information systems,
they can promote better
decision-making. Because data is
obtained quickly and accurately,
you can quickly obtain a full
range of information for the
entire company or organization,
so it is possible to make more
informed decisions. Better
decisions can ultimately save
time and money.
Barcodes are cheap and
user-friendly, providing an
indispensable tool for tracking
data from pricing to inventory.
The end result of a
comprehensive bar code system is
reduced overhead. |
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EasierSoft Ltd. Technology Support: cs@easiersoft.com |
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