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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

Chinese input method

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Page 1: Chinese input method

Design Problem in Chinese Input for Mobile Devices

ADS 740 Special Problems in Design, by Yujie Guo (Torry) Professor Michael Eckersley   Fall semester 2009�

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Content • Why this project • What is the current design and the problem 

•  How is the future  

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Why is improvement/innovation needed?
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question mark needed
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What does this mean for the future?orWhat does this mean for the future of mobile devices?
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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 

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Before 3G...
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Users say they send & receive many text messages.
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How many short messages do you send in one month?
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Why is improvement/innovation needed?
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•  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�

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User Satisfaction of Input Method.
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Users were asked what they thought of current input methods.
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•  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�

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Manufactures were asked why they developed so many methods.
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"where" is confusingshould it be "and"
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•  The Mme before 3G �– Carriers: what’s their a^tude? 

• SMS plans as strategy�• Benefits • Desktop applicaMon soluMon �

why this project�

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Carriers were asked what their attitude was.
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•  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�

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I think the font size of all options should be the same.
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•  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�

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stumbling stone
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...may change...
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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 

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The Current Design and Its Problems
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constraints?
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Constraints
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•  Input differences between different device puzzled user 

The current design and the problems 

Keyboard difference 

Method difference 

Word lib difference 

Character lib difference 

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•  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 

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Keyboard input  

•  Popular keyboard input methods 

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Keyboard Input (capitalize the I since it is a title)
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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 

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By inputting an English letter, certain mapping of the character will be displayed.
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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  

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Even the same stocks, different order refers to a different character
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By inputting in the correct order...
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Handwriting input

•  You can write on screen and the system “guess” the thing you tend to input 

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You can write on the screen, then the system will "guess" what you intend to input.
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Voice input

•  Demo of applicaMon 

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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 

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Norman's Six Point Framework
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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  

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Feedback
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Keyboard input – ABC/English  

• Mapping 

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Keyboard input ‐Pinyin 

• Mapping 

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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 

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Depends on the...
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Keyboard input ‐ Stroke 

• Mapping 

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Keyboard input ‐ Stroke 

•  An example of improved stroke input by opMmizing the mapping process 

•  Depend on the capability of Character library 

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Depends...
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Voice input 

•  Affordances •  Constraints •  The challenge is the local accents – Memory  – Library – Response Mme  

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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   

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The input order is important. Characters in incorrect order will not be recognized in some devices.
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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.  

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Future Standard
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...phone would be carried out by the Department...
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By then, everyone that wants to get a piece of the market should/will follow the standard.
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What is the title of the newspaper?
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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 

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...which would you like to try?(you don't need "most")
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The future  

•  Coming standard •  Product ideas •  InnovaMon points 

– Analyze the current problems • Keyboard: Mapping, constraints  • Voice: Affordances, constraints • HandwriMng: Feedback, visibility  

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Examples of improved keyboard input 

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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.  

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Examples of improved handwriMng 

No more touch pen needed  Touch pad improvement 

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No touch pen required.
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Appendix A: Data and the survey used 

0  5  10  15  20  25 

20‐24 

25‐29 

30‐34 

35+ 

Male 

Female 

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I think these graphs and the map need titles. I do not know what they are representing.