QR Code Tech. Seminar

7/30/2019 QR Code Tech. Seminar

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# Title

1 INTRODUCTION

1.1 WHAT IS QR CODE?

1.2 HOW DOES QR CODE WORK?

2 BACKGROUND OF QR CODE DEVELOPMENT

3 QR CODE STRUCTURE

4 QR CODE SPECIFICATION

5 CHARACTERISTICS OF QR CODE

6 WORKING OF QR CODE

7 QR CODE APPLICATIONS

8 SIGNIFICANCE OF QR CODE

9 DOWNSIDES OF QR CODE

10 FUTURE SCOPE

11 CONCLUSION


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What is QR Code?

QR Code is a matrix code(or two-dimensional bar code)created by Japanese

corporation Denso-Wave in

1994.

The "QR" is derived from"Quick Response", as thecreator intended the code to

allow its contents to be

decoded at high speed.


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How Does It Work?

Data is translated into QR Code by QR Generator.

QR Code is scanned by mobile camera phone having QR

Reader Software.

Software interprets the code.

cell phone displays the text or ask for permission to launch a

browser to display the specified web page.


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In 1970,IBM developed UPC symbol consisting of 12 digits of no:

The Universal Product Code (UPC) is a linear barcode that is widely

used for tracking trade items in stores.

In 1974,Code 39 which can encode approx 30 digits of alphanumeric

characters was developed

Later it led to the development of Code 128,which can encode full ASCII

In 1994,Multirow symbols were developed by extending multistage

symbols and into matrix symbols where data were arranged in matrix.

This matrix code is QR Code, contains 7000 digits of characters at maxincluding Kanji characters.


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The history of symbols


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The development of the symbols


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development of QR Code


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QR Code is a matrix type symbol with

a cell structure arranged in a square.

It consists offour functionality

patterns.


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A) FINDER PATTERN:

i) for detecting position, size and angle of QR Code

ii) arranged at 3 corners


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B)ALIGNMENT PATTERN

i) for correcting distortion of QR Code

ii) central coordinate of alignment pattern is identified to correct

the distortioniii) black isolated cell placed in this pattern makes it easier to

detect central coordinate of the pattern


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C) TIMING PATTERN

i) for identifying central coordinate of each cell.

ii) It is black and white patterns arranged alternately.

iii) for correcting central coordinate of data cell when it is distorted


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D) QUIET ZONE

i) Margin space is needed for reading QR Code

ii) Makes it easier to detect the symbol from the image captured.

iii) Four or more cells necessary for this zone.


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E) DATA AREA

i) Has Reed-Solomon codes incorporated for the stored data and the error

correction functionality.

ii) Data is encoded into binary no's 0s and 1s.

iii) Binary no 0 and 1 will be converted into black and white cells and thenwill be arranged.


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a) All-Direction (360) High-Speed Reading

Finder pattern is arranged in 3 corner

The Ratio b/w black & white among scan line that runs the finder

pattern is always 1:1:3:1:1,when seen from any direction among

3600 surrounding it.

By detecting this specific ratio, finder pattern can be detected from

image captured by CCD sensor.

Finder Patterns Identifying a QR Code


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b) Resistant to Distorted Symbols

How Does a Symbol Get Distorted?

When it is attached to curved surface or reader being tilted. To correct thisdistortion,

QR Code has alignment pattern arranged in regular interval in symbol

The variance b/w centre position of the alignment pattern estimated

from outer shape of symbol & actual centre position of alignment

pattern will be calculated to have mappings corrected.

This makes it readable.

Correcting Distorted Symbols


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C) Data Restoration Functionality (Resistant to Smudged or Damaged Symbols)

QR Code has 4 error correction levels (L,M,Q,H).

Error correction is done by utilizing Reed Solomon code which is highly

resistant to burst errors

Reed-Solomon Code are arranged in the QR Code data area.

So by this functionality, even the damaged symbol can be read up to the error

correction level which is configured by the one that creates the symbol.

Smudged/Damaged Symbols


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D) Linking Functionality of the Symbols

Single symbol can be represented in several symbols by diving it.

Each divided symbol will have an indicator showing the no: of symbols

to which the original symbol is divided into and in which order the

specific symbol would be among all divided ones.


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Advantages of linking function:

Entire data can be edited & submitted to computer regardless of whatorder

the symbols have been read by the reader.

If the printing space is not enough for single symbol, it can be divided

into several small symbols and printed on that space


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Different kinds of QR codes are: Offline Codes & Online Codes.

Kaywa has three sorts of online QR Codes: Short Code, URL, and Short

Code URL.

Generating Codes: can be generated online.

For commercial use: http://apc.qrcode.kaywa.com

For free use: http://qrcode.kaywa.com

Reading Codes :

The information encoded in a QR-Code can be accessed by scanning the code

with a camera phone, using scanning software such as Kaywa Reader.

Alternatively, you can type the Short Code in your Kaywa Reader or send

QR followed by the Short Code to a dedicated SMS number.


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Northwest Airlines Japan

People who took a photo of the code on

their mobile phone were taken directly to

NWAs website that was purpose-built for the

QR Code campaign.

QR codes were chosen as the marketing

tool and were delivered across a range ofoutdoor media in Tokyo.


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QR Code Application in a Jewellery Shop in France

System Outline

Each jewel has a unique ID number to

prevent theft and resale and is managed with

QR code.

QR Code system is also used to create abook with sales and stock records.

Merit of Using QR Code

A small-sized QR Code has implemented

the numbering of small articles like jewelery.Significantly reduced manual handling to

manage individual numbers


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Rough Guide Travel Book

Earthbound: A Rough Guide to the World in Pictures is a coffee-table bookwith more than 250 photos from all over the world

A QR code is printed next to each image and offers a link to the location of

whats pictured in the photo, using Google Maps online.

Once the codes are scanned, readers are rewarded with a Google map of the

spot where the photo was taken

From there they can look at a satellite image and bookmark locations so

that, should they ever go to the region, the mobile device can providedirections to that location.


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The idea of linking spaces to information is not new, but QR codes

combine simple creation with easy access to QR code readers .

The several applications itself show its significances

Not everyone is aware of QR codes. As a result, not everyone who sees

one will know to pull out a cell phone and take a picture of the matrix .

a QR code might direct users to a website that does not display properly

on a cell phone.A QR code might have malware that can use your personal information.


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Welcome to the advertising of the future

This is an exciting and thrilling new way to share content digitally. QR

stands for Quick Ready, and thats exactly what it does.

These codes can be printed on anything, so you could use them onbusiness cards with your contact information.

QR codes are also handy for various branding purposes. They can be

used to direct mobile phone users to special websites to download brand

ads, ring tones, character logos, videos, branded flash games and more.

Retailers print them on receipts. Event producers employ them to

provide exhibit information. Doctor's offices and beauty salons use them to

let people make appointments over their mobile phones.

In other words, they're a great tool for marketers!


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QR codes can store quite complex information in a small matrix. As

awareness grows about how useful they are, we can expect to see them in more

public venues.

Commercial packaging will display codes with detailed nutritional

information or links to websites where users can play the latest product-

associated game or register for updates or coupons.In academic uses, QR codes on student tests could help ensure anonymity in

grading.

In scientific endeavors, QR codes could take the place of printed labels;

attached to lab work, samples, or medication options, they could preserve

confidentiality of participant names.QR Codes may presage other applications that use mobile devices to decode


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Thank you

Documents

QR Code Tech. Seminar