UOIT Keyboard: A Constructive Keyboard for Small Touchscreen Devices

1. Seminar
on
UOIT Keyboard: A Constructive Keyboard
for Small Touchscreen Devices
GUIDED BY : SUBMITTED BY :
Mrs . JAN MARY THOMAS ARUNYA JAYAN
ASST. PROFESSOR S3 MCA
DEPT OF CSE ROLL NO: 8
M.C.E.T, PETHANAMTHITTA REG NO: MCK16MCA-D8
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2. Presentation out line
 Introduction
 Abstract
 Motivation
 Related work
 UOIT
 Conclusion
 References
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3. INTRODUCTION
 Virtual keyboards ,also known as “software keyboards” or
“on-screen keyboards,” have been commonly used for input
in portable devices.
 One of the main features of software keyboards is the
• flexibility of customization to support multiple languages,
• key layouts
• Screen orientations.
 On-screen keyboards it takes up part of the screen during the
text input.
 It takes only a limited amount of space on the screen for the
keyboard. This results in an overcrowded keyboard with
small keys.
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4.  Smartphone users prefer to use their fingers rather than a
stylus to enter.
 The input rate decreases and the error rate increases.
 A number of strategies have been pursued in the design of
virtual keyboards for handling typing errors and increasing
typing speed.
 These strategies are based on
 Character frequencies
 Maintaining distance between the character pairs
 Resizing the keys
 Visually highlighting the keys
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5. ABSTRACT
 To reducing errors during text input on touch screens large
number of techniques.
 New text entry method called the “UOIT keyboard”
 Using “drawing-like typing”
 It has 13 large keys that replace the 26 small keys.
 Speed of UOIT is 11.3 words/min and reduces error rate
becomes 3.8%
 11.2% and 16.3% for QWERTY and multitap entry methods.
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6. MOTIVATION
 Provide users with an intuitive, simple, and un crowded entry
method.
 Aim to give users an experience that combines the ease of the
QWERTY-keyboard-typing experience with the intuitive
construction of characters from the Graffiti and free
handwriting techniques.
 The idea of UOIT is to input English alphabets using
drawing-like typing.
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7.  Unlike the Graffiti and free-hand writing techniques, which
are even slower and more error-prone than QWERTY.
 The naming convention is similar to the QWERTY keyboard.
 The keyboard is named the “UOIT keyboard,” where U, O,
I, and T are the letters in the top row.
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8. RELATED WORK
 One of the related work is performed in 2009 by K. Al Faraj,
M. Mojahid, and N. Vigouroux.
 “Bigkey : A virtual keyboard for mobile devices”.
 The principle of BigKey virtual keyboard is the expanding
key size corresponding to the next character entry.
 This system is primarily designed for the mobile devices such
as Ultra Mobile PC (UMPC), PDAs , smart phones and so
forth.
 The election of characters accomplished by using 3D mode.
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9. What is UOIT ?
 UOIT design based on less crowded text entry method.
 Korean language one character block is created by 2 to 5
consonant and vowel letters placed horizontally or vertically.
• Consonants is 14
• Vowels is 10
• Mathematical possible block is 11 172, greater than can be
accommodate on screen.
 English language total letters is 26.
 Letters are arranged in two groups , one strokes letters in 8
groups and two strokes in 18.
 5 symbolic keys and U,O,T,C,P,V A & E are single stroke
letters.
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10. Types of Key boards:
a) QWERTY
b) UOIT
c) Multi tap
keyboards
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11. Keys of the UOIT Keyboard:
 UOIT can express 31:26 English letters and five punctuation
marks.
 It use 41.9 % of keys from QWERTY.
 Six functional keys included, switch key and flip key as same
in QWERTY.
 The two key stroke letters are constructed two drawing
components that imitate the shape of the letters in upper case.
 The sum of frequencies for single stroke letters is 45.8% and
average key stroke per letters in UOIT is 1.51%.
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12. Alphabet construction in UOIT :
• Drawing components shown in gray are the first input.
• White are the second input.
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13. Input Mechanism for UOIT Keyboard
 Entry methods performed by using single stroke and two
strokes letter.
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14.  UOIT use Deterministic finite automation (DFA), to check
whether or not input process completed.
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15.  UOIT currently supports common punctuation marks are
 Pressing ‘-’ followed by ‘.’ constructs ‘,’.
 Shift ON, pressing ‘-’ followed by ‘.’ constructs
apostrophe.
 Pressing ‘)’ followed by ‘.’ construct question mark ‘?’.
 Pressing double space is used for period ‘.’.
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16. Features of UOIT
Main features are :-
 Automatic completion :-
• It has a unique method for fixing typographical
errors.
• Missing the second key of two strokes letters causes
an automation.
 Minimum finger traveling distance :-
• It can minimizes the finger-travelling distance from
one key to next key.
• Most commonly used key is ‘.’.
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17.  Highlighting hints :-
• Highlight the candidate-drawing components based
on the first-drawing component.
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18. Alternative drawing components :-
• It can be designed using an optional alphabet
construction if there is no typing ambiguity in DFA.
Finger movements of letters not ending with the dot key.
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19. Difference of UOIT from QWERTY and
multitape
 UOIT has large keys like multitap. Qwerty does not have
large keys.
 UOIT has only one symbol in a key, whereas multitap has
two symbols in a key.
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20. CONCLUSION
 Introduced a novel text-entry method referred to as the UOIT-
entry method, which can be used as a keyboard for mobile
devices with a small screen.
 The design was based on the constructive drawing of letters
using either single or double keystrokes.
 The entry speed for the UOIT keyboard was shown to be
faster than the entry speed for the multitap keyboard.
 It generate less error rates this is because of the unfamiliarity
of UOIT.
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21. REFERENCES
 M. Kolsch and M. Turk, “Keyboards without keyboards: A
survey of virtual keyboards,” in Proc. Sensing Input Media-
Centric Syst.,2002.
 E. Rabin and A. M. Gordon, “Tactile feedback contributes to
consistency of finger movements during typing,” Exp. Brain
Res., vol. 155, no. 3,pp. 362–369, 2004.
 E. Hoggan , S. A. Brewster, and J. Johnston, “Investigating
the effectiveness of tactile feedback for mobile touchscreens,”
in Proc. 26th Ann.SIGCHI Conf. Human Factors Comput.
Syst., 2008.
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22. Thank You…
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