1. AN INTRODUCTION TO
BARCODE
Presented By: Van Chiang

2. 1. Brief History of Barcode
2. Why barcode? Advantages.
3. Symbologies.
- Types, Differences between 1D and 2D
4. Composition of a barcode.
- check digit, silent zone, human readable
5. What affect scannability of barcode?
- scan method, environment, print quality,
print surface, color combination
6. Q&A

4. Cost Integrity
Ease of Setup
Data Effectiveness
Accuracy
 Learn use the
SPEED to operator -equipment characters typed,COST
effectively in less
Speed
 Barcode systems have a demonstrated payback
 Keyboard
than 15 minutes.
every 1,000 an
average of ten keying errors. months.
period of six to eighteen
 System are easier to setup than other means of
A bar code label of reads, there is one error. a wide
 Provide the highesttwelve characters can be
data ACCURACY of level of reliability in
EASY SETUP
 (OCR) - every 10,000 the existence of interfacing
entry because
wanded in approximately the time it takes a
variety of datasoftware. 3 million reads, one error.
hardware and application.
 BC normal scanner – every
 Barcode operator easilyvalue by keystrokes.
keyboardscanner - every 70 million notcommonly
labels are to make two only by saving
 Barcode of data loss.create read reads, one error.
systems
 BCin term
*error laser DATA INTEGRITY
time, but devices,preventing costly errors.
available also by and can be printed universally.

5. LINEAR/1D BARCODE 2D BARCODE
o Code 39 o Code Aztec
o Code 128 o Code PDF417
o Code UPC o Code Datamatrix
o Code EAN o Code QR
o Code ITF o Code Maxicode
o Code POSTNET o etc…
o etc…

6. Most common coding for custom usage.
Can be decoded by virtually any barcode scanner.
One of the oldest modern barcode.
Encodes 44 characters only
Each character is composed of nine elements:
five bars and four spaces.
Three of the nine elements are wide (binary value 1),
and six elements are narrow (binary value 0).
An additional common character (*) is used for both
start and stop delimiters.
No checksum required.
Drawback is low data density, require more space to
encode data.

7. High density barcode. Suitable for small products.
Common for custom usage.
Encode all 128 characters available in ASCII format.
Have a mandatory check character maximizes data integrity.
The major drawback is the barcode must be printed by higher
resolution printer to be scanned correctly.

8. For use in the retail grocery industry – point of sales application.
Has several good features such as check digit and good density.
A limited number of characters (numeric characters only).
In UPC, 1 digit for a system number,
5 digits for the manufacturer number,
5 digits for the product number, and one checksum digit.
In EAN/JAN, 2 numbers for the country code,
10 numbers for the data characters, and one checksum digit.

9. Store up to about 1,800 printable ASCII characters
or 1,100 binary characters per symbol.
Has three different encoding schemes that repeat every
three rows.
Enables the symbol to sustain considerable damage and
still be readable.
PDF stands for Portable Data File.
 A unique start and stop pattern which identifies the format as PDF417.
 All rows have the same number of codewords.
 Every codeword contains four bars and four spaces.
 The total width of a codeword is 17 times the width of the narrowest allowed
vertical bar

10. Encode up to 3750 characters .
Built on a square grid with a bullseye pattern at its center.
Data is encoded in a series of "layers" that circle around
the bullseye pattern.
Each additional layer completely surrounds the previous layer
thus causing the symbol to grow in size as more data is encoded.
Orientation independent scanning.
Commonly used as a electronic boarding pass which is send to the
handphone, or printed out as hardcopy ticket.

11. Resemble a checkerboard pattern. Low contrast possible.
Primarily used for its small size (50 characters in 2 – 3mm2)
Exceptional data capacity, capable of encoding up to
2335 alphanumeric characters.
Consist of two solid adjacent borders in an "L" shape
(called the "finder pattern") and two other borders consisting
of alternating dark and light "cells“ (called the "timing pattern").
The EIA recommends using Data Matrix for labeling
small electronic components.
Engraved on PCB Printed on Label

12. QR is the short form for Quick Response.
Can encode numeric only, alphanumeric, binary, kanji/kana.
used in a much broader context, aimed at mobile phone users
(known as mobile tagging).
The usage?
QR Code to be read with a mobile phone.

13. LINEAR/1D 2D
DATA STORAGE HORIZONTAL ONLY HORIZONTAL AND VERTICAL
DATA CAPACITY UP TO 20 CHARACTERS UP TO SEVERAL
THOUSANDS CHARACTERS
DATA INTEGRITY DATA LOSS WHEN ANY DATA REMAINED INTACT
AREA OF BARCODE ALTHOUGH UP TO 20%
DAMAGED AREA OF BARCODE
DAMAGED

15. Inadequate Quiet Zone
Shiny background
Scanning angle
External lighting
Defect Printing
Incorrect scanning distance
Wrong color combination

16. Q&A