CJK Unified Ideographs Extension A
CJK Unified Ideographs Extension-A is a Unicode block containing rare Han ideographs.
| CJK Unified Ideographs Extension A | |
|---|---|
| Range | U+3400..U+4DBF (6,592 code points) |
| Plane | BMP |
| Scripts | Han |
| Assigned | 6,592 code points |
| Unused | 0 reserved code points |
| Unicode version history | |
| 3.0 (1999) | 6,582 (+6,582) |
| 13.0 (2020) | 6,592 (+10) |
| Chart | |
| Code chart | |
| Note: [1][2] Range used for Hangul syllables prior to Unicode 2.0 (see Hangul (obsolete Unicode block)). | |
The block has dozens of variation sequences defined for standardized variants.[3]
It also has thousands of ideographic variation sequences registered in the Unicode Ideographic Variation Database (IVD).[4][5] These sequences specify the desired glyph variant for a given Unicode character.
Block
History
The following Unicode-related documents record the purpose and process of defining specific characters in the CJK Unified Ideographs Extension A block:
| Version | Final code points[lower-alpha 1] | Count | L2 ID | WG2 ID | IRG ID | Document |
|---|---|---|---|---|---|---|
| 3.0 | U+3400..4DB5 | 6,582 | N1423 | N364 | Proposal Summary Form: CJK Unified Ideographs Extension A, 1996-08-01 | |
| N1424 | N382 | CJK Unified Ideograph Extension A Version 1.1, 1996-08-01 | ||||
| N1425 | N378 | Draft Text of General Description for Extension A, 1996-08-01 | ||||
| N1426 | N379 | Draft Text of CJK Annex for Extension A, 1996-08-01 | ||||
| N1455 | Lu, Chin (1996-08-06), More Evidence on CJK Extension A | |||||
| N1439 | Korea's comments on IRG Proposal, 1996-08-12 | |||||
| N1449 | Wang, Xiaoming (1996-08-12), The Great Chinese Word Dictionary with CJK Extensions | |||||
| N1453 | Ksar, Mike; Umamaheswaran, V. S. (1996-12-06), "9. IRG status and reports", WG 2 Minutes - Quebec Meeting 31 | |||||
| N1479 | Ksar, Mike (1997-01-10), Results of SC2 questionnaire on allocation of 6585 Han characters in BMP | |||||
| N1487 | IRG position concerning Japanese comments on extension A, 1997-01-15 | |||||
| L2/97-030 | N1503 (pdf, doc) | Umamaheswaran, V. S.; Ksar, Mike (1997-04-01), "9.2", Unconfirmed Minutes of WG 2 Meeting #32, Singapore; 1997-01-20--24 | ||||
| L2/97-254R | Orita, Tetsuji (1997-11-20), Comment on CJK Unified Ideograph Extension-A by IRG | |||||
| L2/97-279 | Kobayashi, Tatsuo (1997-12-01), Comment on Contribution by Tet Orita titled "Comment on CJK Unified Ideograph Extension-A by IRG" | |||||
| L2/98-039 | Aliprand, Joan; Winkler, Arnold (1998-02-24), "3.B.1. Existing compatibility characters also in CJK Extension A", Preliminary Minutes - UTC #74 & L2 #171, Mountain View, CA - December 5, 1997 | |||||
| L2/98-096 | N1723 | CJK Unified Ideographs Extension A, High Quality Printing, Version 2.0, 1998-03-02 | ||||
| L2/98-103 | N1733 | Text for FPDAM #17 - CJK Unified Ideographs Extension A, 1998-03-20 | ||||
| L2/98-171 | N1776 | Text for PDAM registration and FPDAM ballot for ISO 10646-1 Amendment 17 - CJK Unified Ideographs Extension A, 1998-05-01 | ||||
| L2/98-170 | Winkler, Arnold (1998-05-11), PDAM registration and FPDAM ballot for ISO 10646-1 Amendment 17 - CJK Extension A | |||||
| L2/98-286 | N1703 | Umamaheswaran, V. S.; Ksar, Mike (1998-07-02), "9.1.2", Unconfirmed Meeting Minutes, WG 2 Meeting #34, Redmond, WA, USA; 1998-03-16--20 | ||||
| L2/98-334 | Revised Text of ISO/IEC 10646-1/FPDAM 17, AMENDMENT 17: CJK Unified Ideograph Extension A, 1998-11-02 | |||||
| L2/98-347 | Disposition of comments report on SC2 N3090, ISO 10646 Amd. 17: CJK unified ideograph extension A, 1998-11-02 | |||||
| L2/99-010 | N1903 (pdf, html, doc) | Umamaheswaran, V. S. (1998-12-30), "6.7.2", Minutes of WG 2 meeting 35, London, U.K.; 1998-09-21--25 | ||||
| L2/99-023 | N1943 | Paterson, Bruce; Sato, T. K. (1999-01-08), Revision of 10646-1 Annex T for CJK Unified Ideographs Extension A (Draft) | ||||
| L2/99-156 | Table of replies on ISO/IEC 10646-1/FDAM 17 - CJK Unified Ideographs Extension A, 1999-05-17 | |||||
| L2/99-232 | N2003 | Umamaheswaran, V. S. (1999-08-03), "7.1.3 Revision of Annex T for CJK Extension A", Minutes of WG 2 meeting 36, Fukuoka, Japan, 1999-03-09--15 | ||||
| L2/99-287 | Notice of publication for ISO/IEC 10646-1/Amd. 17, CJK Unified Ideographs Extension A, 1999-08-19 | |||||
| L2/99-335 | N2109 | N674 | Zhang, Zhoucai (1999-09-03), SuperCJK, version 9.0 with Kangxi and HYD data | |||
| L2/03-287 | Cook, Richard (2003-08-24), 16 UniHan.txt errors | |||||
| L2/03-301 | Cook, Richard (2003-08-27), 24 more UniHan.txt errors | |||||
| L2/03-311 | West, Andrew (2003-09-17), Unicode 4.0.1 Beta Review, comments from Andrew C. West | |||||
| L2/03-399 | Fok, Anthony (2003-10-13), Unihan reported errors / changes re kHKSCS entries | |||||
| L2/03-367 | N2667 | Suignard, Michel; Muller, Eric; Jenkins, John (2003-10-22), CJK Ideograph source references corrections | ||||
| L2/03-398 | Nguyen, D. (2003-10-29), Unihan reported errors / changes re kCowles | |||||
| L2/03-453 | Minutes of the Editorial Group Ad Hoc Discussion, 2003-12-17 | |||||
| L2/04-208 | N2774R | N1064 | Proposal to add 6 KP source references to existing CJK Unified Ideographs, 2004-05-25 | |||
| N3353 (pdf, doc) | Umamaheswaran, V. S. (2007-10-10), "M51.9", Unconfirmed minutes of WG 2 meeting 51 Hanzhou, China; 2007-04-24/27 | |||||
| L2/07-208 | N3285 | Proposal to replace 11 KP source references to existing ISO/IEC 10646:2003, 2007-07-18 | ||||
| L2/10-215 | Lunde, Ken (2010-06-22), "Hanyo-Denshi" IVD Collection (PRI 167) to Adobe-Japan1-6 Mapping Table | |||||
| L2/13-016 | Suignard, Michel (2013-01-24), CJK Ext-A fix | |||||
| L2/13-011 | Moore, Lisa (2013-02-04), "CJK — Extension-A Fix", UTC #134 Minutes | |||||
| N4403 (pdf, doc) | Umamaheswaran, V. S. (2014-01-28), "Resolution M61.02 item b", Unconfirmed minutes of WG 2 meeting 61, Holiday Inn, Vilnius, Lithuania; 2013-06-10/14 | |||||
| L2/14-149 | N4544 | Suignard, Michel (2014-07-18), CJK ideographs glyphs representation and sources references | ||||
| N4553 (pdf, doc) | Umamaheswaran, V. S. (2014-09-16), "9.1.3", Minutes of WG 2 meeting 62 Adobe, San Jose, CA, USA | |||||
| L2/14-260 | N4621 | Suignard, Michel (2014-10-23), CJK chart and source references update | ||||
| L2/16-052 | N4603 (pdf, doc) | Umamaheswaran, V. S. (2015-09-01), "M63.05", Unconfirmed minutes of WG 2 meeting 63 | ||||
| L2/17-180 | N2202 | Chan, Eiso (2017-06-02), Request for consideration to add kIRG_GSource values to thirteen ideographs and change two G-source glyphs for the Table of General Standard Chinese Characters [Affects U+37C3 and 3FE0] | ||||
| N4974 | N2301 | Request of TCA's Horizontal Extension for Chemical Terminology [Affects U+44EC], 2018-06-12 | ||||
| N4987 | Proposal on China's Horizontal Extension for 14 CJK Ideographs [Affects U+37C3 and 3FE0], 2018-06-13 | |||||
| N4988 | Proposal on Updating 11 G glyphs of CJK Unified Ideographs to ISO/IEC 10646 [Affects U+3B9D, 3CFD and 4A76], 2018-06-13 | |||||
| N5016 | N2349 | Shin, Sanghyun; Cho, Sungduk; Pyo, Seungju; Kim, Kyongsok (2018-12-13), Request to move character K6-1022 in Horizontal Extension of KS X 1027-5 from U+3EAC to U+248F2 | ||||
| N5020 (pdf, doc) | Umamaheswaran, V. S. (2019-01-11), "10.4.6, 10.4.8 and 10.4.9", Unconfirmed minutes of WG 2 meeting 67 | |||||
| L2/19-242 | N5094 | N2370 | Chan, Eiso (2019-02-14), 20 questionable V4-Source characters in Ext. C and Ext. E [Affects U+440B] | |||
| N2369 | Chan, Eiso (2019-05-06), Feedback on IRGN2369 [Affects U+38C7 and 46E9] | |||||
| N5086 | N2379 | Proposal of China's horizontal extension for technical used characters [Affects U+3472, 3DB8 and 3FE0], 2019-05-10 | ||||
| L2/19-237 | N5068 | Editorial Report on Miscellaneous Issues (meeting IRG#52) [Affects U+3EAC and 440B], 2019-05-17 | ||||
| L2/19-241 | N5083 | N2391 | Errata report for WG2 submission_TCA [Affects U+440B], 2019-05-31 | |||
| 13.0 | U+4DB6..4DBF | 10 | L2/19-242 | N5094 | N2370 | Chan, Eiso (2019-02-14), 20 questionable V4-Source characters in Ext. C and Ext. E [Affects U+4DB6] |
| L2/19-239 | N5080 | N2338 | TCA's feedback to IRG N2338 [Affects U+4DB7, 4DB9, 4DBE and 4DBF], 2019-05-14 | |||
| L2/19-240 | N5081 | N2337 | Disunification of U+2F83B/U+5406 [Affects U+4DB8], 2019-05-14 | |||
| L2/19-241 | N5083 | N2391 | Errata report for WG2 submission_TCA [Affects U+4DBA, 4DBB, 4DBC and 4DBD], 2019-05-31 | |||
| N5122 | "M68.07", Unconfirmed minutes of WG 2 meeting 68, 2019-12-31 | |||||
| L2/19-270 | Moore, Lisa (2019-10-07), "Consensus 160-C14", UTC #160 Minutes | |||||
| ||||||
References
- "Unicode character database". The Unicode Standard. Retrieved 2016-07-09.
- "Enumerated Versions of The Unicode Standard". The Unicode Standard. Retrieved 2016-07-09.
- "Unicode Character Database: Standardized Variation Sequences". The Unicode Consortium.
- "Ideographic Variation Database". Unicode Consortium.
- "UTS #37, Unicode Ideographic Variation Database". Unicode Consortium.
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