Thai Industrial Standard 620-2533, commonly referred to as TIS-620, is the most common character set and character encoding for the Thai language.[citation needed] The standard is published by the Thai Industrial Standards Institute (TISI), an organ of the Ministry of Industry under the Royal Thai Government, and is the sole official standard for encoding Thai in Thailand.
The descriptive name of the standard is "Standard for Thai Character Codes for Computers" (Thai: รหัสสำหรับอักขระไทยที่ใช้กับคอมพิวเตอร์). "2533" refers to year 2533 of the Buddhist Era (1990), the year the present version of the standard was published; a previous revision, TIS 620-2529 (1986), is now obsolete. The code page layout is the same between the two editions.[1]
TIS-620 is the IANA preferred charset name for TIS-620, and that charset name is used also for ISO/IEC 8859-11 (which adds a no-break space character at 0xA0, which is unassigned in TIS-620). When the IANA name is used the codes are supplemented with the C0 and C1 control codes from ISO/IEC 6429.
TIS-620 is a conventionally structured Extended ASCII national character set that retains full compatibility with 7-bit ASCII and uses the 8-bit range hex A1 to FB for encoding the Thai alphabet. Due to the complex combining nature of Thai vowels and diacritics, TIS-620 is intended for information interchange only, and an additional display engine is required to compose characters correctly.
Variantsedit
A nearly identical version of TIS-620 has been adopted as ISO/IEC 8859-11 in 2001, the sole difference being that ISO/IEC 8859-11 defines hex A0 as a non-breaking space, while TIS-620 leaves it undefined but reserved. (In practice, this small distinction is usually ignored.)
The ISO/IEC 8859-11 set has also been registered as ISO-IR-166 by Ecma International, but this variation adds explicit escape codes for signaling the beginning and end of Thai character sequences.
The TIS-620 character set ordering has been used essentially as is within Unicode (ISO/IEC 10646) as well. Unicode's Thai block is U+0E01 through U+0E7F, and TIS-620 Thai characters can be converted to UTF-16 simply by prefixing each byte with 0E and subtracting hex A0 from the value.
Flohr, Guido (2016) [2006]. "Locale::RecodeData::TIS_620 - Conversion routines for TIS-620". CPAN libintl-perl. 1.0. from the original on 2017-01-15. Retrieved 2017-01-14.
Referencesedit
^Meru, Ibrahim (1996-12-03). "Re: Thai encoding standards". Unicode Mail List Archive.
thai, industrial, standard, 2533, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, . This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Thai Industrial Standard 620 2533 news newspapers books scholar JSTOR January 2017 Learn how and when to remove this template message Thai Industrial Standard 620 2533 commonly referred to as TIS 620 is the most common character set and character encoding for the Thai language citation needed The standard is published by the Thai Industrial Standards Institute TISI an organ of the Ministry of Industry under the Royal Thai Government and is the sole official standard for encoding Thai in Thailand The descriptive name of the standard is Standard for Thai Character Codes for Computers Thai rhssahrbxkkhraithythiichkbkhxmphiwetxr 2533 refers to year 2533 of the Buddhist Era 1990 the year the present version of the standard was published a previous revision TIS 620 2529 1986 is now obsolete The code page layout is the same between the two editions 1 TIS 620 is the IANA preferred charset name for TIS 620 and that charset name is used also for ISO IEC 8859 11 which adds a no break space character at 0xA0 which is unassigned in TIS 620 When the IANA name is used the codes are supplemented with the C0 and C1 control codes from ISO IEC 6429 Contents 1 Structure 2 Variants 3 Character set 4 Further reading 5 References 6 External linksStructure editTIS 620 is a conventionally structured Extended ASCII national character set that retains full compatibility with 7 bit ASCII and uses the 8 bit range hex A1 to FB for encoding the Thai alphabet Due to the complex combining nature of Thai vowels and diacritics TIS 620 is intended for information interchange only and an additional display engine is required to compose characters correctly Variants editA nearly identical version of TIS 620 has been adopted as ISO IEC 8859 11 in 2001 the sole difference being that ISO IEC 8859 11 defines hex A0 as a non breaking space while TIS 620 leaves it undefined but reserved In practice this small distinction is usually ignored The ISO IEC 8859 11 set has also been registered as ISO IR 166 by Ecma International but this variation adds explicit escape codes for signaling the beginning and end of Thai character sequences The TIS 620 character set ordering has been used essentially as is within Unicode ISO IEC 10646 as well Unicode s Thai block is U 0E01 through U 0E7F and TIS 620 Thai characters can be converted to UTF 16 simply by prefixing each byte with 0E and subtracting hex A0 from the value Character set editTIS 620 2 0 1 2 3 4 5 6 7 8 9 A B C D E F0x1x2x SP amp 3x 0 1 2 3 4 5 6 7 8 9 lt gt 4x A B C D E F G H I J K L M N O5x P Q R S T U V W X Y Z 6x a b c d e f g h i j k l m n o7x p q r s t u v w x y z 8x9xAx k kh kh kh Kh kh ng c ch ch s ch y d tBx th th th n d t th th th n b p ph f ph fCx ph m y r v l l w s s s h l x h Dx a a a i i u u u u Ex e ae o i i i Fx 0 1 2 3 4 5 6 7 8 9 In the table above 20 is the regular SPACE character Code values 00 1F 7F 80 9F A0 DB DE and FC FF are not assigned to characters by TIS 620 Code values D1 D4 DA E7 EE are combining characters Further reading editFlohr Guido 2016 2006 Locale RecodeData TIS 620 Conversion routines for TIS 620 CPAN libintl perl 1 0 Archived from the original on 2017 01 15 Retrieved 2017 01 14 References edit Meru Ibrahim 1996 12 03 Re Thai encoding standards Unicode Mail List Archive Leisher Mark 1998 03 06 TCCII 2533 1009 TIS 620 Thai TIS620 TXTExternal links editOfficial reference in Thai Announcement in Royal Gazette of TIS 620 2533 and TIS 620 2529 Mapping of TIS 620 to ISO 10646 at the Wayback Machine archived June 5 2013 Retrieved from https en wikipedia org w index php title Thai Industrial Standard 620 2533 amp oldid 1174706522, wikipedia, wiki, book, books, library,
