1、ITU-T RECMNxT.52 93 m 48b259L 0586524 185 m INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU TERMINAL EQUIPMENTS AND PROTOCOLS FOR TELEMATIC SERVICES T.52 (03/93) NON-LATIN CODED CHARACTER SETS FOR TELEMATIC SERVICES ITU-T Recommendation T.52 (Previously “C
2、CITT Recommendation”) ITU-T RECMN*T=52 93 - 48b259L 0586525 Oll m FOREWORD The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the International Telecom- munication Union. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recomme
3、ndations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, established the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics
4、. ITU-T Recommendation T.52 was prepared by the ITU-T Study Group VI11 (1988-1993) and was approved by the WTSC (Helsinki, March 1-12, 1993). NOTES 1 As a consequence of a reform process within the International Telecommunication Union (ITU), the CCITT ceased to exist as of 28 February 1993. In its
5、place, the ITU Telecommunication Standardization Sector (ITU-T) was created as of 1 March 1993. Similarly, in this reform process, the CCIR and the IFRB have been replaced by the Radiocommunication Sector. In order not to delay publication of this Recommendation, no change has been made in the text
6、to references containing the acronyms “CCITT, CCIR or IFRB” or their associated entities such as Plenary Assembly, Secretariat, etc. Future editions of this Recommendation will contain the proper terminology related to the new ITU structure. 2 In this Recommendation, the expression “Administration”
7、is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O ITU 1994 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, withou
8、t permission in writing from the ITU. ITd-T RECMN*Tm5C! 93 4862573 0586526 T58 1 2 3 4 5 6 7 CONTENTS scope Normative references . 2.1 CCIT Recommendations 2.2 IS0 Standards . 2.3 Non-ISO/CCIIT Standards Definitions Abbreviations and acronyms 4.1 Abbreviations 4.2 Acronyms Notation, structure and co
9、de table 5.1 Description of the 7-bit code 5.1.1 Notation 5.1.2 Code table . 5.1.3 Elements of the 7-bit code Description of the 8-bit code 5.2.1 Notation 5.2.2 Code table . 5.2.3 Elements of the 8-bit code Description of the two-byte code 5.3.1 Notation 5.3.2 Code table . 5.2 5.3 Repertoire of grap
10、hic characters 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 General Repertoire of the Arabic alphabetic characters . Repertoire of the Cyrillic alphabetic characters Repertoire of the monotonic Greek alphabetic characters Repertoire of the Hebrew alphabetic characters . Repertoire of the Japanese-Katakana alphab
11、etic characters . Repertoire of the Latin alphabetic characters . Non-alphabetic characters . 6.8.2 Ordinal numbers 6.8.3 Roman symbols . 6.8.4 Unit signs 6.8.5 Punctuation marks . 6.8.6 Scientific signs 6.8.7 Miscellaneous symbols . 6.8.8 Accents and diacritical marks as separate graphic characters
12、 . 6.8.1 Decimal digits . Non-Latin character sets . 7.1 The Arabic set of graphic characters 7.1.1 Structure of the Arabic set 7.1.2 Designation sequences 7.1.3 Usage of the Arabic character set . The Chinese graphic character set for telecommunication . 7.2.1 Notation 7.2.2 Code table . 7.2.3 Stru
13、cture of the Chinese set 7.2.4 Designation sequences 7.2.5 Usage ofthe Chinese character set . 7.2 Recommendation T.52 (03/93) Page 1 2 2 2 2 2 3 3 3 4 4 4 4 4 5 5 6 7 7 7 7 7 7 9 10 12 14 15 17 18 18 19 20 21 21 23 25 27 27 27 27 28 28 28 28 28 28 30 30 1 7.3 7.4 7.5 7.6 7.7 The Cyrillic set of gra
14、phic characters . 7.3.1 Structure of the Cyrillic set . 7.3.2 Designation sequences 7.3.3 Usage of the Cyrillic and Russian supplementary character set . The Greek set of graphic characters . 7.4.1 Structure of the Greek primary set 7.4.2 Designation sequences of the Greek primary set 7.4.3 Usage of
15、 the Greek character set . The Hebrew set of graphic characters . 7.5.1 Structure of the Hebrew set . 7.5.2 Designation sequences 7.5.3 Usage of the Hebrew set . 7.6.1 Structure of the Japanese-Kanji set . 7.6.3 The Japanese-Katakana set of graphic characters . 7.7.1 7.7.3 The Japanese-Kanji set of
16、graphic characters . 7.6.2 Designation sequences Usage ofthe Japanese-Kanji set Structure of the Japanese-Katakana set . 7.7.2 Designation sequences Usage of the Japanese-Katakana set . 8 Coded representation of non-latin graphic character sets . 8.1 General 8.2 The Arabic primary set . 8.3 The Chin
17、ese character set . 8.4 The Cyrillic supplementary set . 8.5 The Russian supplementary set . 8.6 The Greek primary set 8.7 The Hebrew supplementary set . 8.8 The Japanese-Kanji set . 8.9 The Japanese-Katakana character set Annex A - List of registered character sets . Annex B - Guidelines for genera
18、ting and presenting the names of characters and control functions in CCITT Recommendations B.l General B.2 Rules for presentation of characters and control functions . li Recommendation T.52 (03D3) Page 30 30 30 30 31 31 31 31 31 31 31 32 32 32 32 33 33 33 33 33 34 34 35 37 61 63 65 69 71 83 85 85 8
19、5 86 I ITU-T RECMN*T*52 93 H 4862593 058b528 820 Recommendation T52 NON-LATIN CODED CHARACTER SETS FOR TELEMATIC SERVICES (Helsinki, 1993) 1 scope 1.1 The CC, considering (a) services; (b) services; (c) Recommendation; (4 telematic services; the increasing interdependence of the various CCT characte
20、r sets and coding schemes in various telematic the introduction of new facilities such as code conversion and interworking between various telematic the convenience of having all relevant CCTT Recommendations on non-Latin character sets compiled in one that Recommendation T.51 is the existing base c
21、oding and control functions Recommendation for CCIT (e) (0 set; that Recommendations T.61 and T.lO1 define the character coding systems for teletex and videotex; that Recommendation T.50 specifies the International Reference Alphabet (IRA) of the 7-bit coded character (g) used in the various telemat
22、ic services, that Recommendation T.53 specifies the character coded control functions and code extension facilities to be provides the following Recommendation as a reference document from which non-Latin graphic character sets should be derived for individual telematic services. 1.2 Its aim is to s
23、erve as the reference document for all future applications. 1.3 addition of other non-Latin languages. 1.4 characters and control functions issued by ISO/IEC. These guidelines consists of a set of rules described in Annex B. 1.5 applications. 1.6 sets for applications. 1.7 alphabets are defined here
24、. The non-Latin character sets defined in this Recommendation are This Recommendation specifies all the non-Latin graphic character sets used in the CCTT telematic services. This Recommendation is an open Recommendation containing all the necessary provisions for the future The naming conventions us
25、ed in this Recommendation are in accordance to the guidelines for naming graphic This Recommendation describes the one byte codes which include the 7-bit and 8-bit graphic character sets for This Recommendation describes the two byte codes which include the Japanese-Kanji and Chinese character Recom
26、mendation T.52 implicitly includes T.50 and T.51. Only the additional code tables for non-Latin - the Arabic character set; - the Chinese character set; I - the Cyrillic character set; - the Greek character set; - the Hebrew character set; Recommendation T.52 (03/93) 1 ITU-T RECMN*T=52 93 4862571 05
27、86529 767 - the Japanese-Kanji character set; - the Japanese-Katakana character set. 2 Normative references The following CCITT Recommendations and International Standards contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publicati
28、on, the editions indicated were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this Recommendation are encouraged to investigate the possibility of applying the most recent edition of the Recommendations and Standards listed below. Members of IEC
29、 and IS0 maintain registers of currently valid International Standards. The CCITT Secretariat maintains a list of currently valid CCITT Recommendations. 2.1 WITT Recommendations - - - - CCITT Recommendation T.50 International Reference Alphabet, 1992. CCITT Recommendation T.51 Latin based Coded Char
30、acter Setsfor Telematic Services, 1992. CCIT draft Recommendation T.53 Character Coded Control Functions for Telematic Services, 1993. CCITT Recommendation T.61 Character repertoire and coded character sets for the international teletex service, 1992. CCITT Recommendation T. 101 International interw
31、orking for videotex services, 1992. - 2.2 IS0 Standards IS0 2022, Information processing - IS0 7-bit and 8-bit coded character sets - Code extension techniques, 1986. IS0 6429, Information processing - Control functions for coded character sets, 1992. ISO/IEC 6937, Information technology - Coded gra
32、phic character set for text communication - Latin alphabet, 1992. ISOAEC 10367, Information processing - Repertoire of standardized coded graphic character sets for use in 8-bit codes, 199 1. JTCI/SC2/WG3 N 99, Guidelines for generating and presenting unique names of characters in SC2 standards, Jan
33、uary 1990. 2.3 Non-ISOKCITT Standards Registration number 168, Japanese graphic character set for information interchange, Japanese standard JIS X 0208- 1990. ASMO 449,7-bit coded Arabic character set for information interchange, 1985. 3 Definitions For the purpose of this Recommendation the followi
34、ng definitions apply. 3.1 3.2 framing techniques. 3.3 3.4 relationship between the characters of the set and their bit combination. 3.5 given code. bit combination: An ordered set of bits used for the representation of characters. byte: A bit string that is operated upon as a unit and the size of wh
35、ich is independent of redundancy or character: A member of a set of elements used for the organization, control or representation of data. coded character set; code: A set of unambiguous rules that establishes a character set and the one-to-one code extension: The technique for the encoding of chara
36、cters that are not included in the character set of a 2 Recommendation T.52 (03/93) 3.6 code table: A table showing the character allocated to each bit combination in a code. 3.7 control character: A control function, the coded representation of which consists of a single bit combination. 3.8 that h
37、as a coded representation consisting of one or more bit combinations. control function: An action that affects the recording, processing, transmission or interpretation of data and 3.9 processing or data communication system or in part of such a system. environment: The characteristic that identifie
38、s the number of bits used to represent a character in a data 3.10 of two or more bit combinations. The first of these bit combinations represents the character ESCAPE (01A i). escape sequence: A bit siring that is used for control purposes in code extension procedures and that consists NOTE - Format
39、s and rules regarding the use of escape sequences are specified in IS0 2022. 3.11 final byte: The bit combination that terminates an escape sequence or a control sequence. NOTE - In various specifications there appears the term final character which is equal to the term final byte. 3.12 handwritten,
40、 printed or displayed, and that has a coded representation consisting of one or more bit combinations. graphic character: A character, other than a control function, that has a visual representation normally 3.13 graphic symbol: A visual representation of a graphic character. 3.14 position: That par
41、t of a code table identified by its column and row coordinates. 3.15 coded character set. repertoire: A specified set of characters that are represented by means of one or more bit combinations of a 3.16 two-dimensional form, for example printed on a paper or displayed on a screen. text: A represent
42、ation of information for human comprehension that is intended for presentation in a Text consists of symbols, phrases or sentences in natural or artificial languages, pictures, diagrams and tables. NOTE -This Recommendation applies only to text made up of characters. 3.17 text communication; communi
43、cation of text: The transfer of text by means of telecommunications. 4 Abbreviations and acronyms 4.1 Abbreviations For the purpose of this Recommendation the following abbreviations are used: ASMO CCITT EC International Electrotechnical Commission IS0 International Organization for Standardization
44、Arab Organization for Standardization and Metrology International Telegraph and Telephone Consultative Committee 4.2 Acronyms CSI Control sequence introducer ESC Escape LSB Least significant bit MSB Most significant bit Recommendation T.52 (03193) 3 ITU-T RECMN*T-52 93 4862591 0586531 315 W Bits Wei
45、ght 5 Notation, structure and code table b7 b6 b5 b4 b3 b2 bl 22 21 20 23 22 21 20 Column Row 5.1 Description of the 7-bit code 5.1.1 Notation The bits of the 7-bit code are identified by b7, b6, b5, b4, b3, b2 and bl, where b7 is the highest order, or most significant bit (MSB) and bl is the lowest
46、 order, or least significant bit (LSB). The bit combinations may be interpreted to represent numbers in the range of O to 128 in binary notation by attributing the following weights to the individual bits: In this Recommendation, the bit combinations are identified by notations of the form xx/yy, wh
47、ere xx and yy are numbers in the range O0 to 15. The correspondence between the notations of the form xdyy and the bit combinations consisting of the bits b7 to bl is as follows: xx is the number represented by b. b6 and b5 where these bits are given the weights 4, 2 and 1, respectively; yy is the n
48、umber represented by b4, b3, b2 and bl where these bits are given the weights 8, 4, 2 and 1, respectively. - - The notations of the form xx/yy are the same as the ones used to identify code table positions, where xx is the column number and yy is the row number. 5.1.2 Code table The 7-bit code table
49、 described in Figure 5-1 consists of 128 positions arranged in 8 columns and 16 rows. The columns and rows are numbered from O0 to 07 and 00 to 15, respectively. The positions of the code table are in one-to-one correspondence with the bit combinations of the code. The notation of a code table position, of the form xx/yy, is the same as that of the corresponding bit combination. 5.1.3 Elements of the 7-bit code The 7-bit code consists of the following parts: - ACOset A set of up to 32 control characters taken from columns 00 and O1 of the code table. - AGO set Columns O2 to 07 contai
