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April 10, 2023
1D & 2D code Development and Application
TSANG KIN KAI - 13214020LAU KIM FAI - 13204017
WU YIMIN - 13202804
April 10, 2023
OutlineObjectives
Background
Web Search
Library Search
Mind Map
Survey Q.
Charts & Analysis
Job Division
April 10, 2023
Objectives• To introduce the principle and the application of
codes
• To think about the future development by creativity.
April 10, 2023
Background• Example of Codes• 1-D Code• A barcode is an optical machine-readable
representation of data relating to the object to which it is attached.
• 2-D Code• Is a matrix code that invented based on 1-D code
Different
codes
April 10, 2023
Principle of Operation• Codes are using the reflectivity of color. (Black and
White have a huge difference in reflecting light.)
• White can reflect different wavelength of visible lights, in contrast, Black can absorb all of these visible lights.
• Reader emit the visible light to the code, then detect the reflected lights, finally translate it to be datum/words depended on the variable wavelength of reflected light.
April 10, 2023
Advantages of 1-D code
• Reliable: One mistake occurred in 15,000 characters.
• High efficiency: Read 40 characters in a second.
• Lower cost: Do not need high-tech equipment to generate or read.
• Easy to Generate: Can be generated by software or application in computer/smartphone.
UsageGoods code: Store the prices, the details of sales/purchases, and etc.
Postal code: Store postal content such as the recipient address.
April 10, 2023
Advantages of 2-D code
• Store more complicated information than 1-D code(Even can store pictures)
• More convenient (Hyperlinks for a specific page)
• Multi-aspect usages (Eg. Identification, Logistics, E-Banking, Public Transportation)
April 10, 2023
QR code
• Can be read even the code is damaged (maximum 30%).
QR code maximum storage in Characters
Number 7,089
Letter 4296
Katakana(Japanese)
1817
Chinese 987
UsageTransportation Hyperlinks
April 10, 2023
Generate by yourself
April 10, 2023
QR Code development (Creative)
• Google Drive Printing (HKBU)• 1. Upload the document to the Google drive and generate a
QR code
• 2. Show your smartphone with QR code to the printer with code reader machine.
April 10, 2023
Collected information(Web)Yahoo Search
Search strategies Result (Link)
"QR code application" http://punk.tw/2007/04/03/qr-code-application-in-your-daily-life/
QR code Filetype:pdf http://www.magazine.org.tw/ImagesUploaded/news/12964397036590.pdf
April 10, 2023
Mind map
April 10, 2023
Survey• Survey Objectives: • Trend of Popularity of codes• Think about future development
• Number of responses: 29
April 10, 2023
Charts and Analysis
29%
12%
19%
21%
20%
Q12. Usage of Bar Code
Buy things Hospital Website Bill payment Library Others
April 10, 2023
Charts and Analysis
27%
16%
27%
11%
18%
Q13. Code Application
Coupon Code Tickets Code Website Code Words Translation Goods Search Others
April 10, 2023
Charts and Analysis
Coupon code Ticket code Website code Words Translation Goods searching0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
Female%Male%
Q13. Code Application
April 10, 2023
Job Division
TSANG KIN KAI
LAU KIM FAI
WU YIMIN
Designed the Questionnaire
✔
Analyzed the Questionnaire
✔
Designed the PowerPoint
✔
Searching information ✔ ✔ ✔
Presentation ✔ ✔ ✔
April 10, 2023
Youtube Video