File:JIS and Shift-JIS variants.svg

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Description

English: Slightly simplified depiction of the relationship between various JIS character encodings, their standards, their variants on PC platforms, the WHATWG encoding standard, ISO 646 and 2022 and Unicode. Names used are descriptive and are mostly not standard labels. Common subsets of encodings are listed even if not themselves defined by any specification.

Incomplete list of sources consulted:

https://www.itscj.ipsj.or.jp/iso-ir/229.pdf
https://www.itscj.ipsj.or.jp/iso-ir/233.pdf
https://encoding.spec.whatwg.org/
ftp://ftp.software.ibm.com/software/globalization/gcoc/attachments/CP00300.pdf
https://www.iana.org/assignments/character-sets/character-sets.xhtml
The output of Python 3.5's shift_jis_2004, ms-kanji, euc-jp, euc-jis-2004 codecs
The README accompanying source of the same: https://github.com/python/cpython/blob/master/Modules/cjkcodecs/README
http://www.ecma-international.org/publications/standards/Ecma-035.htm
http://x0213.org/codetable/index.en.html
ftp://ftp.software.ibm.com/software/globalization/gcoc/attachments/CP00897.txt
https://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP932.TXT
https://www.zophar.net/pc98/anex86.html , specifically the font bitmap for NEC PC98. Cross reference with this PC98 font from here (extracted graphic).
https://web.archive.org/web/20000131063242/http://www.opengroup.or.jp:80/jvc/cde/appendix-e.html
Various ICU mappings, both in online explorer and UCM formats.
See [1] for a code-point by code-point comparison I generated from various mapping definitions from Unicode, ICU and various other places.

Date 23 September 2017

Source Own work

Author User:HarJIT

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File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	09:41, 14 November 2017	3,003 × 1,678 (351 KB)	HarJIT	further tweak.
	09:40, 14 November 2017	3,003 × 1,678 (351 KB)	HarJIT	tweak
	10:43, 13 November 2017	3,003 × 1,678 (351 KB)	HarJIT	Fix an overlap.
	10:22, 13 November 2017	3,003 × 1,678 (351 KB)	HarJIT	Further reduction.
	10:09, 13 November 2017	2,991 × 1,713 (352 KB)	HarJIT	Some adjustments, further reduce bounding box to hopefully allow less shrunken display.
	23:45, 12 November 2017	3,053 × 1,803 (357 KB)	HarJIT	Add IBM-954 EUC-JP variant.
	16:35, 8 November 2017	3,053 × 1,803 (342 KB)	HarJIT	Layout improvements.
	16:33, 8 November 2017	3,053 × 1,803 (342 KB)	HarJIT	Clearer notes, reduced bounding box hopefully resulting in less relatively small text.
	02:10, 8 November 2017	3,153 × 1,903 (342 KB)	HarJIT	clearer.
	01:59, 8 November 2017	3,153 × 1,903 (340 KB)	HarJIT	clarify status of ICU mappings in the note.
	21:51, 7 November 2017	3,153 × 1,878 (315 KB)	HarJIT	Add IBM Code page 942.
	20:44, 14 October 2017	3,153 × 1,878 (311 KB)	HarJIT	eucJP-open includes NEC row 13.
	09:52, 14 October 2017	3,153 × 1,878 (309 KB)	HarJIT	Mention the nature of eucJP-open.
	18:23, 13 October 2017	3,153 × 1,878 (305 KB)	HarJIT	Note JIS numbering of international standards.
	18:10, 13 October 2017	3,153 × 1,878 (303 KB)	HarJIT	Acknowledge the IBM extensions to EUC-JP (occupying two rows of area subsequently used by plane 2 of JISx0213).
	18:42, 12 October 2017	3,153 × 1,878 (300 KB)	HarJIT	Annotations to clarify certain complications not visible on the main graph.
	10:06, 27 September 2017	3,153 × 1,878 (263 KB)	HarJIT	…whereas 7-bit ISO 646 JP (7-bit JISCII) definitely is a configured subset thereof.
	10:01, 27 September 2017	3,153 × 1,878 (263 KB)	HarJIT	ASCII is at least a configured subset of ISO 2022 JP.
	09:55, 27 September 2017	3,153 × 1,878 (263 KB)	HarJIT	…actually, I believe JIS X 0213 native encoding (delegating P2 to GR/G1 and P1 to GL/G0 and allowing SI/SO) is a configured subset of ISO 2022 but not of ISO 2022 JP 2004 (loading them to GL using escape sequences).
	09:46, 27 September 2017	3,153 × 1,878 (262 KB)	HarJIT	Change some of the less illuminating node descriptions.
	14:06, 25 September 2017	3,103 × 1,878 (264 KB)	HarJIT	Minor accuracy / consistency adjustment.
	12:11, 25 September 2017	3,103 × 1,878 (264 KB)	HarJIT	Detail of the NEC version of JIS X 0208, not only of the portions incorporated into Windows-31J.
	14:42, 24 September 2017	3,103 × 1,878 (257 KB)	HarJIT	Fix an aesthetic mistake.
	14:41, 24 September 2017	3,128 × 1,901 (259 KB)	HarJIT	Reposition some nodes for greater clarity.
	14:28, 24 September 2017	3,103 × 1,878 (257 KB)	HarJIT	Corrections on the precise variant of ISO-2022-JP in web standards, better detail IBM versions of Shift_JIS.
	04:12, 24 September 2017	3,103 × 1,878 (248 KB)	HarJIT	Slightly more consistent naming of nodes.
	20:51, 23 September 2017	3,103 × 1,878 (248 KB)	HarJIT	Clearer and more informative legend/key.
	20:25, 23 September 2017	3,103 × 1,878 (244 KB)	HarJIT	Small aesthetic adjustment.
	20:21, 23 September 2017	3,103 × 1,878 (244 KB)	HarJIT	Missed a needlessly confusing area: fixed now.
	20:18, 23 September 2017	3,103 × 1,878 (247 KB)	HarJIT	Clearer coverage of Shift_JIS variants, and more detail on the IBM variant.
	14:34, 23 September 2017	3,103 × 1,878 (246 KB)	HarJIT	Certain EUC varients that appear to be clearly defined as using ASCII.
	14:13, 23 September 2017	3,103 × 1,878 (245 KB)	HarJIT	Acknowledge "configured subsets", relevant in terms of stateful ISO 2022, e.g. pure JIS X 0208 being a configured subset of ISO-2022-JP.
	11:58, 23 September 2017	3,103 × 1,878 (241 KB)	HarJIT	{{Information \|Description ={{en\|1=Simplified depiction of the relationship between the various JIS X standards, the WHATWG encoding standard, ISO 646 and 2022 and Unicode. Names used are descriptive and are mostly not standard labels. Incomplete l...