MULTILINGUAL CONVERSATION ASCII TO UNICODE IN INDIC SCRIPT

David C. Wyld et al. (Eds) : ITCS, SIP, CST, ARIA, NLP - 2017
pp. 83– 94, 2017. © CS & IT-CSCP 2017 DOI : 10.5121/csit.2017.70308
MULTILINGUAL CONVERSATION ASCII
TO UNICODE IN INDIC SCRIPT
Dr. Rajwinder Singh1
and Charanjiv Singh Saroa2
1
Department of Punjabi, Punjabi University, Patiala, India
2
Department of Computer Engraining, Punjabi University Patiala, India
ABSTRACT
In this paper we discuss the various ASCII based scripts that are made for Indian languages
and the problems associated with these types of scripts. Then we will discuss the solution we
suggest to overcome these problems in the form of “Multilingual ASCII to Unicode Converter”.
We also explain the need of regional languages for the development of a person. This paper also
contains information of UNICODE and various other issues related to regional languages.
KEYWORDS
Keywords: NLP, Punjabi, Mother Tongue, Gurmukhi, Font Conversion, UNICODE, ASCII,
Keyboard Layout.
1. INTRODUCTION
According UNESCO reports About half of the 6,000 or so languages spoken in the world are
under threat. Over the past three centuries, languages have died out and disappeared at a dramatic
and steadily increasing pace, especially in the Americas and Australia. Today at least 3,000
tongues are endangered, seriously endangered or dying in many parts of the world. [1] A
language disappears when its speakers disappear or when they shift to speaking another language.
[2] It is also proved from various researches that the primary education of the child should be in
the mother tongue of the child instead of in any other language.
In this new world of technology, most of the information is available on internet in e-form. But in
regional languages, due to various technical issues like ASCII based fonts, keyboard layouts, lack
of awareness of UNICODE, non availability of spell checkers, it is not easy. In regional
languages, most of the available fonts are ASCII based instead of UNICODE. We need an
intelligent code converter that can change ASCII to UNICODE based scripts.
2. REGIONAL LANGUAGE
A regional language is a language spoken in an area of a state or country, whether it is a small
area, a state, a county, or some wider area. Regional languages, as defined by the European
Charter for Regional or Minority Languages are traditionally used by part of the population in a
state, but which are not official state language dialects, migrant languages or artificially created
languages. [3]

84 Computer Science & Information Technology (CS & IT)
Regional language is mainly spoken in small parts. It changes with the change in culture, religion
and economy of the region. In a country, there may be hundreds of regional languages and each
language may have further variations. A language is not always limited within the boundaries of a
country. One language may be part of more than one country. The eighth schedule of the
constitution of India lists 22 scheduled languages. [4] The 22 is for scheduled languages as per
the Indian Constitution. It is hard to use computer with all the languages. We need to train
computer in each particular language. Computational linguistics is the study of computer system
for understanding and generating natural language. [5] Linguistics is the scientific study of
language. [6] V.Rajaraman writes in 1998 the government took proactive steps to promote
Information Technology by giving incentives such as tax breaks and reduced import duties. [7]
Communication infrastructure also improved. The cost of computers came down. All these
resulted in a rapid growth of the software services industry with annual growth rate exceeding
30%. We will identify the significant events during each of the above referred periods and explain
their impact on the development of IT in India.
2.1 IMPORTANCE OF REGIONAL LANGUAGES
We learn culture, religion and respect from our mother tongue. Regional languages contain lots of
sources of understanding community and culture. Regional language/mother tongue gives us:
a) The connections to our roots.
b) Knowledge of our culture.
c) Sense of belonging.
d) Better linguistic skills.
f) Sharper children.
g) A better society.
2.2 NEED OF EDUCATION IN REGIONAL LANGUAGES
Primary education of the child should be in the mother tongue of the child instead of in any other
language. Some of the statements are listed below also point toward this.
The following statement from the book titled “The Use of Vernaculars in Education” published
by the United Nation‘s Educational Scientific and Cultural Organization (UNESCO) in 1953 is an
eye opener. The book presents the essence of international research and wisdom on the issue:
It is axiomatic that the best medium for teaching a child is his mother tongue. Psychologically, it
is the system of meaningful signs that in his mind works automatically for expression and
understanding. Sociologically, it is means of identification among the members of community to
which he belongs. [8]
Children learn best when they are taught in their mother tongue, particularly in the earliest years.
Experience in many countries shows that bilingual education, which combines instruction in the
mother tongue with teaching in the dominant national language, can open educational and other
opportunities. In the Philippines students proficient in the two languages of the bilingual
education policy (Tagalog and English) outperformed students who did not speak Tagalog at
home. [9]
It is axiomatic that the best medium for teaching a child is his mother tongue. Psychologically, it
is the system of meaningful signs that in his mind works automatically for expression and
understanding sociologically. it is means of identification among the members of the community
to which he belongs. [10] Educationally, he learns more quickly through it than through an
unfamiliar linguistic medium.

Computer Science & Information Technology (CS & IT) 85
2.3 CHALLENGES TO USE REGIONAL SCRIPTS IN E-FORM OF INFORMATION
It is very challenging to provide information in e-form using regional languages. Some of the
challenges are:
2.3.1 Fonts & Keyboard Layouts:
There are 100s of fonts for every language. In most of the regional languages mainly each font
has its own keyboard layout. That result in changing the content of the matter with the change of
font and most of the information become useless. Like if Correct sentence is “ I am Going ” in
font Arial , with change in font it becomes something like “r kj pjras”. This will never happens in
English because all the fonts are created with same keyboard layout and same coding system. But
this type of problem is very common in regional languages. A problem with ASCII based fonts
for Regional scripts is that there is no standardization of mapping of script characters with
keyboard keys. We presently work on 5 Indic Scripts and some of the ASCII based tables of
various fonts of these scripts are:
Table 1. For Gurmukhi script of various ASCII Based Fonts
Remington Style Phonetic Style
DecimalCode
Joy
Asees
BJanmeja5A
PrimeJa
GurmukhiLys010
TERAFONT-
Maharaja
Gul-P5Bold
AnmolLipi
LMP_Amrik
Akhar
Amritboli
DRChatrikWeb
GurmukhiIIGS
Chatrik
Sukhmani
65 A A A A A A A A A A A A A A A
66 B B B B B B B B B B B B B B B
67 C C C C C C C C C C C C C C C
68 D D D D D D D D D D D D D D D
69 E E E E E E E E E E E E E E E
70 F F F F F F F F F F F F F F F
71 G G G G G G G G G G G G G G G
72 H H H H H H H H H H H H H H H
73 I I I I I I I I I I I I I I I
74 J J J J J J J J J J J J J J J
75 K K K K K K K K K K K K K K K
76 L L L L L L L L L L L L L L L
77 M M M M M M M M M M M M M M M
78 N N N N N N N N N N N N N N N
79 O O O O O O O O O O O O O O O
80 P P P P P P P P P P P P P P P
81 Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q
82 R R R R R R R R R R R R R R R
83 S S S S S S S S S S S S S S S
84 T T T T T T T T T T T T T T T
85 U U U U U U U U U U U U U U U
86 V V V V V V V V V V V V V V V
87 W W W W W W W W W W W W W W W
88 X X X X X X X X X X X X X X X
89 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
90 Z Z Z Z Z Z Z Z Z Z Z Z Z Z Z
91 [ [ [ [ [ [ [ [ [ [ [ [ [ [ [
92

93 ] ] ] ] ] ] ] ] ] ] ] ] ] ] ]
94 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
95 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
96 ` ` a ` ` ` ` ` ` ` ` ` ` ` `
97 a a a a a a a a a B a a a a
98 B b b b b b b b b b b b b b b
99 c c c c c c c c c c c c c c c
100 d d d d d d d d d d d d d d d
101 e e e e e e e e e e e e e e e
102 f f f f f f f f f f f f f f f
103 g g g g g g g g g g g g g g g
104 h h h h h h h h h h h h h h h
105 i i i i i i i i i i i i i i i
106 j j j j j j j j j j j j j j j
107 k k k k k k k k k k k k k k k
108 l l l l l l l l l l l l l l l
109 m m m m m m m m m m m m m m m
110 n n n n n n n n n n n n n n n
111 o o o o o o o o o o o o o o o
112 p p p p p p p p p p p p p p p
113 q q q q q q q q q q q q q q q
114 r r r r r r r r r r r r r r r
115 s s s s s s s s s s s s s s s
116 t t t t t t t t t t t t t t t
117 u u u u u u u u u u u u u u u
118 v v v v v v v v v v v v v v v
119 w w w w w w w w w w w w w w w
120 x x x x x x x x x x x x x x x
121 y y y y y y y y y y y y y y y
122 z z z z z z z z z z z z z z z
Table 2. For Hindi(Devnagri), Gujrati, Malayalam, Tamil script of various ASCII Based Fonts
Hindi (Devnagri) Gujrati Malayalam Tamil
Decimalcode
Aakriti
Chanakya
xdvng
Kundli
GujratiSaral-1
LMG-Laxmi
Saumil_guj2
Chitra
Manorama
Aruna
Deepa
Gayathri
ELCOT-
Kanchi
TM-
TTValluvar
Baamini
divya
65 A A Α A A A A A A A A A A A A A
66 B B Β B B B B B B B B B B B B B
67 C C Χ C C C C C C C C C C C C C
68 D D ∆ D D D D D D D D D D D D D
69 E E Ε E E E E E E E E E E E E E
70 F F Φ F F F F F F F F F F F F F
71 G G Γ G G G G G G G G G G G G G
72 H H Η H H H H H H H H H H H H H
73 I I Ι I I I I I I I I I I I I I
74 J J ϑ J J J J J J J J J J J J J

75 K K Κ K K K K K K K K K K K K K
76 L L Λ L L L L L L L L L L L L L
77 M M Μ M M M M M M M M M M M M M
78 N N Ν N N N N N N N N N N N N N
79 O O Ο O O O O O O O O O O O O O
80 P P Π P P P P P P P P P P P P P
81 Q Q Θ Q Q Q Q Q Q Q Q Q Q Q Q Q
82 R R Ρ R R R R R R R R R R R R R
83 S S Σ S S S S S S S S S S S S S
84 T T Τ T T T T T T T T T T T T T
85 U U Υ U U U U U U U U U U U U U
86 V V ς V V V V V V V V V V V V
87 W W Ω W W W W W W W W W W W W
88 X X Ξ X X X X X X X X X X X X X
89 Y Y Ψ Y Y Y Y Y Y Y Y Y Y Y Y Y
90 Z Z Ζ Z Z Z Z Z Z Z Z Z Z Z Z Z
91 [ [ [ [ [ [ [ [ [ [ [ [ [ [ [ [
92 ∴
93 ] ] ] ] ] ] ] ] ] ] ] ] ] ] ] ]
94 ^ ^ ⊥ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
95 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
96 ` ` α ` ` ` ` ` ` ` ` ` ` ` ` `
97 a a α a a a a a a a a a a a a a
98 b b β b b b b b b b b b b b b b
99 c c χ c c c c c c c c c c c c c
100 d d δ d d d d d d d d d d d d d
101 e e ε e e e e e e e e e e e e e
102 f f φ f f f f f f f f f f f f f
103 g g γ g g g g g g g g g g g g g
104 h h η h h h h h h h h h h h h h
105 i i ι i i i i i i i i i i i i i
106 j j ϕ j j j j j j j j j j j j j
107 k k κ k k k k k k k k k k k k k
108 l l λ l l l l l l l l l l l l l
109 m m µ m m m m m m m m m m m m m
110 n n ν n n n n n n n n n n n n n
111 o o ο o o o o o o o o o o o o o
112 p p π p p p p p p p p p p p p p
113 q q θ q q q q q q q q q q q q q

114 r r ρ r r r r r r r r r r r r r
115 s s σ s s s s s s s s s s s s s
116 t t τ t t t t t t t t t t t t t
117 u u υ u u u u u u u u u u u u u
118 v v ϖ v v v v v v v v v v v v v
119 w w ω w w w w w w w w w w w w w
120 x x ξ x x x x x x x x x x x x x
121 y y ψ y y y y y y y y y y y y y
122 z z ζ z z z z z z z z z z z z z
Above tables explain the variation in various fonts with same code. Like in ASCII code 65 in Joy,
Asees, Bjanmeja5A, GurmukhiLys 010 represents Bindi (“◌ਂ”), in Prime Ja it represents
adak(“◌ੱ”) in AnmolLipi, AmritLipi, Amritboli 65 is used to represents aira(“ਅ”)in Akhar font it
is for ura+hora(“ਓ”) and in Chatrik font it is for ura(“ੳ”),. And when we change the font of the
text information of the text is also changed and become useless as shown in following table.
Tabel 3: Various Punjabi Fonts with same key impression
Font Name Text
AnmolLipi pMjwbI XUnIvristI, pitAwlw
Akhar pMjwbI XUnIvristI, pitAwlw
Chatrik pMjwbI XUnIvristI, pitAwlw
Joy pMjwbI XUnIvristI, pitAwlw
Asees pMjwbI XUnIvristI, pitAwlw
Bjanmeja5A pMjwbI XUnIvristI, pitAwlw
GurmukhiLys 010 pMjwbI XUnIvristI, pitAwlw
Computer understand data in the form of 0 and 1. According to that ASCII codes are created for
Roman script. But these codes are not compatible with other Indic scripts. Some of the variations
are;
Table 4: Script and code Compare
DecCode
Joy
Asees
BJanmeja5A
PrimeJa
GurmukhiLys
010
AnmolLipi
AmritLipi
Akhar
Amritboli
DRChatrikW
eb
65 A A A A A A A A A A
69 E E E E E E E E E E
70 F F F F F F F F F F
87 W W W W W W W W W W

Table 5: Script and code Compare
Hindi (Devnagri) Gujrati Malayalam Tamil
Aakriti
Chanakya
xdvng
GujratiSaral-1
LMG-Laxmi
Saumil_guj2
Manorama
Aruna
ELCOT-Kanchi
TM-TTValluvar
65 A A Α A A A A A A A
69 E E Ε E E E E E E E
77 M M Μ M M M M M M M
87 W W Ω W W W W W W
2.3.2 Non Unicode Fonts:
Mostly the data available in regional languages are in ASCII based Indic scripts. we want to
display that data on website we have to upload the required font for that data and user firstly have
to download and install that font, Only then the user can view that information. There are
thousands of fonts used for create data in Indian Scripts. Only in Punjabi (Gurmukhi) alone has
more than 225 popular fonts which are still in use to publishing books, magazine, news paper etc.
Publishers are still working with ASCII coding based fonts. They have not used Unicode based
fonts to following reasons:
• People resist to change, due to Unicode typing issues. [11]
• Lack of awareness of Unicode standard.
• Little support of Unicode system in publishing software that they are using.
• Less availability of Unicode fonts to represent text in different style and designs
It is always better to display information in Unicode based fonts while displaying the information
on website. The information presently available to us is mainly in ASCII based fonts. So we
convert that ASCII based information into Unicode based fonts so that it can be available on
internet. The information displayed in Unicode can be seen on any computer without installing
font. Other advantage of Unicode based fonts is that it is searchable on search engines like
Google, Yahoo, Ask, Bing etc.
2.3.3 Some special Symbols:
Some text can contain some unique type of symbols that are not available in ASCII codes and
even not in UNICODE system.
2.3.4 Typing problem:
By default Mainly each computer contain English (roman) keyboard. And most of the user are not
aware of UNICODE based system and fonts. Without the knowledge of UNICODE based fonts
user cannot type in Unicode.

2.3.5 Spell check:
All the available spellcheckers mainly work with English language.
3. ASCII/UNICODE
ASCII abbreviated from American Standard Code for Information Interchange, is a character
encoding standard (the Internet Assigned Numbers Authority (IANA) prefers the name US-
ASCII). ASCII codes represent text in computers, telecommunications equipment, and other
devices. Most modern character-encoding schemes are based on ASCII, although they support
many additional characters ASCII coding system can code only 128 characters [0-127] in ASCII
7bit and 256 characters (0-255) in ASCII 8bit. [12] These are allocated to characters of roman
script, special symbols and to alphanumeric characters. No place for other scripts in ASCII .On
the other hand the Unicode coding system provide much more range of codes that help to give
unique code to various scripts. The Unicode Standard, the latest version of Unicode contains
more than 110,000 characters covering 100 scripts. [13]
First version of Unicode (1.0.0) is released on October 1991 that contain total 7,161 of 24 scripts
some of the scripts are Arabic, Armenian, Bengali, Bopomofo, Cyrillic, Devanagari, Gujarati,
Gurmukhi, Hangul, Hebrew, Hiragana, Kannada, Katakana, Lao, Latin, Malayalam, Oriya,
Tamil, Telugu, Thai, Tibetan etc. Version 7.0 is released in June 2014 that contain 113,021
characters of 123 scripts new scripts that are included are Bassa Vah, Caucasian
Albanian, Duployan, Elbasan, Grantha, Khojki, Khudawadi, Linear A, Mahajani, Manichaean,
Mende Kikakui, Modi, Mro, Nabataean, Old North Arabian, Old Permic, Pahawh Hmong,
Palmyrene, Pau Cin Hau, Psalter Pahlavi, Siddham, Tirhuta, Warang Citi, and Dingbats. [14]
The latest version was released in June 2016 that contain 128,237 characters and 135 scripts.
3.1 HOW UNICODE WORKS
As in ASCII code each roman character get its unique code so on every computer it will display
as the user type it. when user write anything he/she did not worry about choosing which font to
write in. User knows that other users will be able to read this article without any problems. This is
not happened with regional languages ASCII based fonts. User need to provides font with the
information so that other user can read it. But in Unicode each character gets its own individual
code. But when user use Unicode font, users would not have to decide which font to use. ASCII
uses the limited set of codes to store the character information whereas Unicode gives a uniqe
code to every character which it recognises. Thats why ASCII may change its characters when the
font is changed.
3.2 ADVANTAGES OF UNICODE
1) Allows for multilingual text in single document without bothering about fonts.
2) Support of Unicode is available on all modern technologies which extend life and scope
of application.
3) Full internet support for Unicode system so information written using Unicode based font
is easily viewed on internet.
4) Text in any language can be exchanged worldwide.

Figure 1: Unicode Character Code to Rendered Glyphs for Gurmukhi and Devnagri Script
3.3 MULTILINGUAL ASCII TO UNICODE SCRIPT CONVERTER:
(www.gurmukhifontconverter.com)
To overcome the problem of ASCII based fonts we create font converter software that can
convert many fonts of Indic scripts into other scripts without changing its original meaning and
content. Some of the software that are available before it are not very accurate and it convert text
without formatting, if a document contains some text in other scripts it converts the whole
document to target font. But the font converter that we have created converts the only required
code to target code without effecting the text of any other scripts. This software is then converted
into an online website (www.gurmukhifontconverter.com) So that everyone can use it. Now more
than 30,000 users are using it to convert their text from one font to another. To create this
converter we had done manual mapping of around 168 fonts that results around 8,000 page
document. This document has helped us to create this font converter. This converter also converts
ASCII based fonts to Unicode based fonts.
i. Algorithm:
ii. Input text in the converter.
iii. Identify the script.
iv. By matching words from corpus
v. By matching tries from corpus
vi. Select maximum frequency of word and tri in each language script.
vii. Source script is automatically identified from step 2.
viii. Converter automatically identifies the target Unicode system.
ix. Convert the ASCII characters one by one into Unicode system.
x. Repeat stem 2 to 5 for each word and sentence.
Our developed system that will convert multilingual (Devnagri, Gurmukhi , Malyalam, gujrati,
Telgu, Roman) data which automatically identify the script and then system automatically
convert it into its UNICODE based script. To identify the script we created a database of around

200 Thousands of words of each script. Further tries are created comprising 400 Thousands tries
of each script. “Multilingual Conversation ASCII to Unicode in Indic Script” fulfils following
requirements:
Figure 2. http:/gurmukhifontconverter.com/gfc-without-format.aspx
IDENTIFICATION
Identification is done on the basis of words. We need to identify the language from minimum
words which are typed/paste by the user.
Convert To Unicode
The system efficiently converts all the ASCII based scripts in to Unicode system.
Retain Formatting
“Multilingual Conversation ASCII to Unicode in Indic Script” retains the original formatting of
the text. It converts the text without changing its formatting.
4. RESULTS
Figure 3. Accuracy of various scripts

Figure 4. Speed with formatting and without formatting
REFERENCES
[1] UNESCO Bangkok, (2008) Improving the Quality of Mother Tongue-based Literacy and Learning:
Case Studies from Asia, Africa and South America, pp7.
[2] Marcia Langton and Zane Marhea, (2003) Traditional Lifestyles and Biodiversity use Regional
Report: Australia, Asia and The middle east, PP21
[3] Strasbourg, (1992) EUROPEAN CHARTER FOR REGIONAL OR MINORITY LANGUAGES,
ETS 148–Charter for Minority Languages, 5.XI, pp14-15.
[4] Government of India, (2007), The Constitution of India, Govt. of India Ministry of law and justice
(As modified up to the 1st December 2007), pp358-360.
[5] Ralph Grishman, (1986) Computational linguistics an introduction, Cambridge University Press,
pp24.
[6] John Lyons, (1981) Language and Linguistics an Introduction, Cambridge University Press, pp33
[7] V. Rajaraman, (2012) History of computing in India, 1995-2010, Supercomputer education and
research centre Indian institute of science, Bangalore 560012, pp14.
[8] Unesco Education Position Paper, (2003) Education in a multilingual World, Published by the United
Nations Education, Scientific and Cultural Organization, pp13-14
[9] Human Development Report, (2004) Cultural Liberty in Today‟s Diverse World, Carfax Publishing,
Taylor and Francis Ltd. Customer Services Department, pp77
[10] UNESCO. 1953. The Use of Vernacular Languages in Education. Monographs on Fundamental
Education, No. 8. Paris, pp54
[11] Gurpreet Singh LEHAL1 Tejinder Singh SAINI, (2012) An Omni-font Gurmukhi to Shahmukhi
Transliteration System, Proceedings of COLING, Mumbai PP314
[12] https://en.wikipedia.org/wiki/ASCII
[13] Ms.M.Kavitha1 , Ms.S.Kawsalya, (2013) Secured Crypto-Stegano Communication through Unicode
and Triple DES, International Journal of Innovative Research in Computer and Communication
Engineering Vol. 1, Issue 2, PP396

[14] The Unicode Consortium, (2015), The Unicode Standard Version 8.0 – Core Specification, Published
in Mountain View, CA, pp913.
AUTHORS
Dr. Rajwinder Singh is Assistant Professor in Department of Punjabi, Editor and
Coordinator Punjabipedia (www. punjabipedia.org) world famous project in Punjabi
University Patiala, where he has been since 2009. He also currently working various
projects related to technical development for Punjabi language, literature and culture.
He has completed his Ph.D. (Linguistics) at Punjabi University, Patiala (2008) and his
undergraduate also complete this University. His research interests Computational
Linguistics, NLP, Grammar, Punjabi Linguistics and area of programming languages.
Er. Charanjiv Singh Saroa is Assistant Professor in Computer department of
Engraining, Punjabi University Patiala. He is also working co-coordinator
Punjabipedia world famous project in Punjabi University Patiala. His area of interest is
NLP.

MULTILINGUAL CONVERSATION ASCII TO UNICODE IN INDIC SCRIPT

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