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Design Problem in Chinese Input for Mobile Devices
ADS 740 Special Problems in Design, by Yujie Guo (Torry) Professor Michael Eckersley Fall semester 2009�
Content • Why this project • What is the current design and the problem
• How is the future
why this project�• The Mme before 3G �
– Users: they use text message so much…�The amount of short messages you send per month?
1000+
500‐1000
300‐499
100‐299 50‐99
under 50
• The Mme before 3G �– Users: How’s current input methods?�
Are you saMsfied with the input method?
Very saMsfied
Good Just so so unsaMsfied
why this project�
• The Mme before 3G �– Manufactories: why they developed so many input methods? • More than 1,000 ways
• 90% market share from foreign companies, where 50% from T9, a US company �
why this project�
• The Mme before 3G �– Carriers: what’s their a^tude?
• SMS plans as strategy�• Benefits • Desktop applicaMon soluMon �
why this project�
• The Mme before 3G �– Carriers: PC applicaMon=IM+SMS to improve the experience�
No I never use
It saves money
the input is faster
the interface is more friendly
the keyboard is becer
I don’t like switch from computer to phone when I use computer.
why this project�
• The coming of 3G – More applicaMon needs text input, input speed could be the stumbling store of communicaMon
– User group may changed, a wider age scale challenges the current methods �
why this project�
The current design and the problems
• The design Process of Chinese input – Challenges
• Hardware & sofware constrains • Language complexity
– Research: HCI research in China • The studied group and regional differences • Real‐life pracMce and academic knowledge
– Implement balance • “Engineer first” moco
– TesMng • Constrains and limitaMon
• Input differences between different device puzzled user
The current design and the problems
Keyboard difference
Method difference
Word lib difference
Character lib difference
• The design Process • The design
– Keyboard input • Pinyin • Stock
– HandwriMng input – Voice input
Pinyin Stock Cang jie
Hand wriMng
Voice input
The current design and the problems
Keyboard input
• Popular keyboard input methods
Keyboard input A demo of pinyin input
• By input the English lecer, certain mapping to the character will then display.
• Use direcMon arrows to choose the correct character or word
Keyboard input A demo of stock input
• The lecers on keyboard were mapped to stock of the character
• By input right order of stock will input the character
• Even same stocks, different order refer to different character
Handwriting input
• You can write on screen and the system “guess” the thing you tend to input
Voice input
• Demo of applicaMon
The current design and the problems
• The design Process • The design • The problems
– Norman’s 6 points framework • Conceptual model • Affordances • Mapping • Feedback • Visibility • Constraints
The current design and the problems
• The main problems of keyboard input: – Mapping – Physical constraints
• The main problems of voice input – Affordances – Cultural constraints
• The main problems of handwriMng input – Visibility – feedback
Keyboard input – ABC/English
• Mapping
Keyboard input ‐Pinyin
• Mapping
Keyboard input ‐Pinyin
• An example of improved Pinyin input by opMmizing the mapping process: intelligent word input
• Depend on the capability of the word library
Keyboard input ‐ Stroke
• Mapping
Keyboard input ‐ Stroke
• An example of improved stroke input by opMmizing the mapping process
• Depend on the capability of Character library
Voice input
• Affordances • Constraints • The challenge is the local accents – Memory – Library – Response Mme
HandwriMng input
• Visibility – Cursive wriMng – The size of the pad – Character lib
• Feedback – The input order is important wrong order to write a character will not be recognized in some devices
The future
• Coming standard – The standard of Chinese input in Mobile phone would carry out by Department Ministry of InformaMon Industry.
– By then, every one want to get a piece of the market should follow the standard.
– This informaMon was from newspaper of 2006, February.
The future
• Coming standard • Product ideas
If the following new technologies are applied to Chinese input methods, which do you like to try most?�
accurate handwriMng input
accurate voice input
easy‐operaMng copy‐paste funcMon.
word scan funcMon
customize words and phrases
auto arrange most common used words
magnanimous word library
The future
• Coming standard • Product ideas • InnovaMon points
– Analyze the current problems • Keyboard: Mapping, constraints • Voice: Affordances, constraints • HandwriMng: Feedback, visibility
Examples of improved keyboard input
Examples of improved keyboard
The BK600 Bluetooth wireless foldable keyboard support Palm, Symbian, Win CE these 3 OS. It only weights 200g and a hand size. 2 AA baceries would provide a long‐Mme use. At the back of the keyboard, there’s a stand that can be placed on a phone.
The O2 Xda Atom Exec send out this keyboard as a gif for buying the phone. The size is similar with the phone and set as a standard keyboard. Meanwhile, some shortcut keys are added on the top, such as rotate screen, inbox mail and calendar.
The G‐tech Bluetooth wireless keyboard can be folded as cloth. It is because it designed by using cloth, expect the bacery box. This keyboard weight 68g and the bacery can stay for 20 hours conMnuous working. It supports most PDA and smart phone device.
Examples of improved handwriMng
No more touch pen needed Touch pad improvement
Appendix A: Data and the survey used
0 5 10 15 20 25
20‐24
25‐29
30‐34
35+
Male
Female