CJK Unified Ideographs Extension D

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Short description: Unicode character block
CJK Unified Ideographs Extension D
RangeU+2B740..U+2B81F
(224 code points)
PlaneSIP
ScriptsHan
Assigned222 code points
Unused2 reserved code points
Unicode version history
6.0222 (+222)
Note: [1][2]

CJK Unified Ideographs Extension D is a Unicode block containing uncommon CJK ideographs for Chinese, Japanese, Korean, and Vietnamese, some of which are in current use. Much smaller than most Unicode blocks for CJK unified ideographs, Extension D consists of characters which were submitted to the Ideographic Research Group as "urgently needed characters" between 2006 and 2009. Characters submitted during the same period which were needed less urgently were included in CJK Unified Ideographs Extension E instead.[3]

The block has hundreds 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 D block:

Version Final code points[lower-alpha 1] Count L2 ID WG2 ID IRG ID Document
L2/09-214 N3560 IRG URGENT Version4.0(M Set) [Macao set], 2008-12-24 
N3560_C N1532R Evidences of Urgently Needed Characters (China set), 2008-12-31 
N3560_U Jenkins, John (2009-04-14), UNC source information for U-source characters 
N3560_J Lunde, Ken (2007-11-11), Additional references for IRG N1367 
N3560_T N1305 Request to add 24 new characters to CJK D, 2007-05-30 
L2/09-234 N3603 (pdf, doc) Umamaheswaran, V. S. (2009-07-08), Unconfirmed minutes of WG 2 meeting 54 
L2/09-177 Whistler, Ken (2009-05-01), WG2 Consent Docket 
L2/09-220 Jenkins, John (2009-05-15), Requirement for Additional Source Information in the Extension D Documentation 
L2/09-104 Moore, Lisa (2009-05-20), UTC #119 / L2 #216 Minutes 
L2/09-239 Source information for CJK Extension D on ISO/IEC 10646, 2009-07-10 
N3703 (pdf, doc) Umamaheswaran, V. S. (2010-04-13), Unconfirmed minutes of WG 2 meeting no. 55, Tokyo 2009-10-26/30 
N3831 Input from China on G sources CJK Extension D, 2010-04-21 
L2/10-108 Moore, Lisa (2010-05-19), UTC #123 / L2 #220 Minutes 
  1. ↑ Proposed code points and characters names may differ from final code points and names

References

  1. ↑ "Unicode character database". The Unicode Standard. https://www.unicode.org/ucd/. Retrieved 2023-07-26. 
  2. ↑ "Enumerated Versions of The Unicode Standard". The Unicode Standard. https://www.unicode.org/versions/enumeratedversions.html. Retrieved 2023-07-26. 
  3. ↑ "18.1: Han (§ Blocks Containing Han Ideographs)", The Unicode Standard: Core Specification, Version 15.0: pp. 741–744, 2022, ISBN 978-1-936213-32-0, https://www.unicode.org/versions/Unicode15.0.0/ch18.pdf#page=6 
  4. ↑ "Ideographic Variation Database". Unicode Consortium. https://www.unicode.org/ivd/. 
  5. ↑ "UTS #37, Unicode Ideographic Variation Database". Unicode Consortium. https://www.unicode.org/reports/tr37/. 



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