Just investigating how well modern Japanese personal and place names are represented in commonly-available character sets, such as JIS X 0208 and Unicode.
The short story is that Unicode on a recent version of Windows or Mac OS X should be adequate in most cases, perhaps over 99%, for handling modern input data involving place and personal names.
For the actual details, please read on …
So far it appears that there are several Japanese place names that use kanji not available in common computer character sets.
Japanese personal names have the following general properties:
- People born in Japan normally have a family name (2 kanji) followed by a given name (2 kanji), both written in kanji. There are about 100,000 family names. There are many more given names, with kanji selected from an official list maintained by the Ministry of Justice, the Jinmei kanji list, of 500 to 1,000 characters.
- However, if parents insist on a given name that cannot be represented in the Jinmei list, they may register a given name in hiragana.
- Foreigners have their name written in katakana unless they register for a name in kanji.
- Names written in cursive calligraphy (sousho) for use in poetry or artistic forms, or on hanko stamps, or variants, cannot be represented with standard code points and would have to be handled as an image.
JIS X 0208 – 1983 does a fair job of representing most, but not all, personal names and locations. It includes the Jinmei kanji list.
JIS X 0213 – 1997 is an update of JIS X 0208 that is round-trippable with Unicode 3.1.
So personal names are mostly representable in current JIS and Unicode, although anybody can use variant kanji that would cause problems on input, storage and display of their name. I suppose such a user would have to fall back to another kanji codepoint, same kanji with wrong glyph, or even just use hiragana.
Windows XP and Server 2003 can process Unicode 3.0 and Unicode 4.0. Vista appears to support Unicode 5.0. Rendering would depend on your installed fonts.
Mac OS X 10.4 (Tiger) supports Unicode 4.0.
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