ホーム > Windows-31J 情報 > Windows-31J の重複符号化文字と Unicode

Windows-31J の重複符号化文字と Unicode

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Windows-31J (マイクロソフト Code Page 932) では重複符号化されている文字があります。ここでは、その重複符号化されている文字の変換をどのように行うかについて扱っています。

マイクロソフトの Code Page 932 の文字コード変換では重複符号化されている文字は Unicode への変換で同一のコードポイントへ変換され、Unicode からシフトJISに変換する際には特定のコードポイントが用いられるようになっています。

基本的なルールは次のようになっていて、1 から順番にルールが適用されます。

  1. 2区にある文字は2区のコードポイントを用いる
  2. 13区にある文字は13区のコードポイントを用いる
  3. 115〜119区にある文字は115〜119区のコードポイントを用いる

具体的なコードポイントを表にすると次のようになり、Unicode からシフトJISへの変換では、強調表示のコードポイントが用いられます。

2区
(JIS X 0208-1983)
13区
(NEC)
89〜92区
(NEC)
115〜119区
(IBM)
Unicode
0x81BE0x879CU+222AUnion
0x81BF0x879BU+2229Intersection
¬0x81CA ¬0xEEF9¬0xFA54U+FFE2Fullwidth Not Sign
0x81DA0x8797U+2220Angle
0x81DB0x8796U+22A5Up Tack
0x81DF0x8791U+2261Identical To
0x81E00x8790U+2252Approximately Equal To Or The Image Of
0x81E30x8795U+221ASquare Root
0x81E60x879A0xFA5BU+2235Because
0x81E70x8792U+222BIntegral
T0x8754T0xFA4AU+2160Roman Numeral One
U0x8755U0xFA4BU+2161Roman Numeral Two
V0x8756V0xFA4CU+2162Roman Numeral Three
W0x8757W0xFA4DU+2163Roman Numeral Four
X0x8758X0xFA4EU+2164Roman Numeral Five
Y0x8759Y0xFA4FU+2165Roman Numeral Six
Z0x875AZ0xFA50U+2166Roman Numeral Seven
[0x875B[0xFA51U+2167Roman Numeral Eight
\0x875C\0xFA52U+2168Roman Numeral Nine
]0x875D]0xFA53U+2169Roman Numeral Ten
0x87820xFA59U+2116Numero Sign
0x87840xFA5AU+2121Telephone Sign
0x878A0xFA58U+3231Parenthesized Ideograph Stock
@0xEEEF@0xFA40U+2170Small Roman Numeral One
A0xEEF0A0xFA41U+2171Small Roman Numeral Two
B0xEEF1B0xFA42U+2172Small Roman Numeral Three
C0xEEF2C0xFA43U+2173Small Roman Numeral Four
D0xEEF3D0xFA44U+2174Small Roman Numeral Five
E0xEEF4E0xFA45U+2175Small Roman Numeral Six
F0xEEF5F0xFA46U+2176Small Roman Numeral Seven
G0xEEF6G0xFA47U+2177Small Roman Numeral Eight
H0xEEF7H0xFA48U+2178Small Roman Numeral Nine
I0xEEF8I0xFA49U+2179Small Roman Numeral Ten
U0xEEFAU0xFA55U+FFE4Fullwidth Broken Bar
V0xEEFBV0xFA56U+FF07Fullwidth Apostrophe
W0xEEFCW0xFA57U+FF02Fullwidth Quotation Mark
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{0xED5F{0xFA7BU+5094CJK Unified Ideograph
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0xED730xFA90U+FA0ECJK compatibility Ideograph
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0xED7D0xFA9AU+57C7CJK Unified Ideograph
0xED7E0xFA9BU+FA0FCJK compatibility Ideograph
0xED800xFA9CU+FA10CJK compatibility Ideograph
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0xED930xFAAFU+5D27CJK Unified Ideograph
0xED940xFAB0U+5D53CJK Unified Ideograph
0xED950xFAB1U+FA11CJK compatibility Ideograph
0xED960xFAB2U+5D42CJK Unified Ideograph
0xED970xFAB3U+5D6DCJK Unified Ideograph
0xED980xFAB4U+5DB8CJK Unified Ideograph
0xED990xFAB5U+5DB9CJK Unified Ideograph
0xED9A0xFAB6U+5DD0CJK Unified Ideograph
0xED9B0xFAB7U+5F21CJK Unified Ideograph
0xED9C0xFAB8U+5F34CJK Unified Ideograph
0xED9D0xFAB9U+5F67CJK Unified Ideograph
0xED9E0xFABAU+5FB7CJK Unified Ideograph
0xED9F0xFABBU+5FDECJK Unified Ideograph
0xEDA00xFABCU+605DCJK Unified Ideograph
0xEDA10xFABDU+6085CJK Unified Ideograph
0xEDA20xFABEU+608ACJK Unified Ideograph
ソ0xEDA3ソ0xFABFU+60DECJK Unified Ideograph
0xEDA40xFAC0U+60D5CJK Unified Ideograph
0xEDA50xFAC1U+6120CJK Unified Ideograph
0xEDA60xFAC2U+60F2CJK Unified Ideograph
0xEDA70xFAC3U+6111CJK Unified Ideograph
0xEDA80xFAC4U+6137CJK Unified Ideograph
0xEDA90xFAC5U+6130CJK Unified Ideograph
0xEDAA0xFAC6U+6198CJK Unified Ideograph
0xEDAB0xFAC7U+6213CJK Unified Ideograph
0xEDAC0xFAC8U+62A6CJK Unified Ideograph
0xEDAD0xFAC9U+63F5CJK Unified Ideograph
0xEDAE0xFACAU+6460CJK Unified Ideograph
0xEDAF0xFACBU+649DCJK Unified Ideograph
0xEDB00xFACCU+64CECJK Unified Ideograph
0xEDB10xFACDU+654ECJK Unified Ideograph
0xEDB20xFACEU+6600CJK Unified Ideograph
0xEDB30xFACFU+6615CJK Unified Ideograph
0xEDB40xFAD0U+663BCJK Unified Ideograph
0xEDB50xFAD1U+6609CJK Unified Ideograph
0xEDB60xFAD2U+662ECJK Unified Ideograph
0xEDB70xFAD3U+661ECJK Unified Ideograph
0xEDB80xFAD4U+6624CJK Unified Ideograph
0xEDB90xFAD5U+6665CJK Unified Ideograph
0xEDBA0xFAD6U+6657CJK Unified Ideograph
0xEDBB0xFAD7U+6659CJK Unified Ideograph
0xEDBC0xFAD8U+FA12CJK compatibility Ideograph
0xEDBD0xFAD9U+6673CJK Unified Ideograph
0xEDBE0xFADAU+6699CJK Unified Ideograph
0xEDBF0xFADBU+66A0CJK Unified Ideograph
0xEDC00xFADCU+66B2CJK Unified Ideograph
0xEDC10xFADDU+66BFCJK Unified Ideograph
0xEDC20xFADEU+66FACJK Unified Ideograph
0xEDC30xFADFU+670ECJK Unified Ideograph
0xEDC40xFAE0U+F929CJK compatibility Ideograph
0xEDC50xFAE1U+6766CJK Unified Ideograph
0xEDC60xFAE2U+67BBCJK Unified Ideograph
0xEDC70xFAE3U+6852CJK Unified Ideograph
0xEDC80xFAE4U+67C0CJK Unified Ideograph
0xEDC90xFAE5U+6801CJK Unified Ideograph
0xEDCA0xFAE6U+6844CJK Unified Ideograph
0xEDCB0xFAE7U+68CFCJK Unified Ideograph
0xEDCC0xFAE8U+FA13CJK compatibility Ideograph
0xEDCD0xFAE9U+6968CJK Unified Ideograph
0xEDCE0xFAEAU+FA14CJK compatibility Ideograph
0xEDCF0xFAEBU+6998CJK Unified Ideograph
0xEDD00xFAECU+69E2CJK Unified Ideograph
0xEDD10xFAEDU+6A30CJK Unified Ideograph
0xEDD20xFAEEU+6A6BCJK Unified Ideograph
0xEDD30xFAEFU+6A46CJK Unified Ideograph
0xEDD40xFAF0U+6A73CJK Unified Ideograph
0xEDD50xFAF1U+6A7ECJK Unified Ideograph
0xEDD60xFAF2U+6AE2CJK Unified Ideograph
0xEDD70xFAF3U+6AE4CJK Unified Ideograph
0xEDD80xFAF4U+6BD6CJK Unified Ideograph
0xEDD90xFAF5U+6C3FCJK Unified Ideograph
0xEDDA0xFAF6U+6C5CCJK Unified Ideograph
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0xEDDC0xFAF8U+6C6FCJK Unified Ideograph
0xEDDD0xFAF9U+6CDACJK Unified Ideograph
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0xEDDF0xFAFBU+6D87CJK Unified Ideograph
0xEDE00xFAFCU+6D6FCJK Unified Ideograph
@0xEDE1@0xFB40U+6D96CJK Unified Ideograph
A0xEDE2A0xFB41U+6DACCJK Unified Ideograph
B0xEDE3B0xFB42U+6DCFCJK Unified Ideograph
C0xEDE4C0xFB43U+6DF8CJK Unified Ideograph
D0xEDE5D0xFB44U+6DF2CJK Unified Ideograph
E0xEDE6E0xFB45U+6DFCCJK Unified Ideograph
F0xEDE7F0xFB46U+6E39CJK Unified Ideograph
G0xEDE8G0xFB47U+6E5CCJK Unified Ideograph
H0xEDE9H0xFB48U+6E27CJK Unified Ideograph
I0xEDEAI0xFB49U+6E3CCJK Unified Ideograph
J0xEDEBJ0xFB4AU+6EBFCJK Unified Ideograph
K0xEDECK0xFB4BU+6F88CJK Unified Ideograph
L0xEDEDL0xFB4CU+6FB5CJK Unified Ideograph
M0xEDEEM0xFB4DU+6FF5CJK Unified Ideograph
N0xEDEFN0xFB4EU+7005CJK Unified Ideograph
O0xEDF0O0xFB4FU+7007CJK Unified Ideograph
P0xEDF1P0xFB50U+7028CJK Unified Ideograph
Q0xEDF2Q0xFB51U+7085CJK Unified Ideograph
R0xEDF3R0xFB52U+70ABCJK Unified Ideograph
S0xEDF4S0xFB53U+710FCJK Unified Ideograph
T0xEDF5T0xFB54U+7104CJK Unified Ideograph
U0xEDF6U0xFB55U+715CCJK Unified Ideograph
V0xEDF7V0xFB56U+7146CJK Unified Ideograph
W0xEDF8W0xFB57U+7147CJK Unified Ideograph
X0xEDF9X0xFB58U+FA15CJK compatibility Ideograph
Y0xEDFAY0xFB59U+71C1CJK Unified Ideograph
Z0xEDFBZ0xFB5AU+71FECJK Unified Ideograph
[0xEDFC[0xFB5BU+72B1CJK Unified Ideograph
\0xEE40\0xFB5CU+72BECJK Unified Ideograph
]0xEE41]0xFB5DU+7324CJK Unified Ideograph
^0xEE42^0xFB5EU+FA16CJK compatibility Ideograph
_0xEE43_0xFB5FU+7377CJK Unified Ideograph
`0xEE44`0xFB60U+73BDCJK Unified Ideograph
a0xEE45a0xFB61U+73C9CJK Unified Ideograph
b0xEE46b0xFB62U+73D6CJK Unified Ideograph
c0xEE47c0xFB63U+73E3CJK Unified Ideograph
d0xEE48d0xFB64U+73D2CJK Unified Ideograph
e0xEE49e0xFB65U+7407CJK Unified Ideograph
f0xEE4Af0xFB66U+73F5CJK Unified Ideograph
g0xEE4Bg0xFB67U+7426CJK Unified Ideograph
h0xEE4Ch0xFB68U+742ACJK Unified Ideograph
i0xEE4Di0xFB69U+7429CJK Unified Ideograph
j0xEE4Ej0xFB6AU+742ECJK Unified Ideograph
k0xEE4Fk0xFB6BU+7462CJK Unified Ideograph
l0xEE50l0xFB6CU+7489CJK Unified Ideograph
m0xEE51m0xFB6DU+749FCJK Unified Ideograph
n0xEE52n0xFB6EU+7501CJK Unified Ideograph
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r0xEE56r0xFB72U+769ECJK Unified Ideograph
s0xEE57s0xFB73U+769BCJK Unified Ideograph
t0xEE58t0xFB74U+76A6CJK Unified Ideograph
u0xEE59u0xFB75U+FA17CJK compatibility Ideograph
v0xEE5Av0xFB76U+7746CJK Unified Ideograph
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{0xEE5F{0xFB7BU+787ACJK Unified Ideograph
|0xEE60|0xFB7CU+7930CJK Unified Ideograph
}0xEE61}0xFB7DU+FA18CJK compatibility Ideograph
~0xEE62~0xFB7EU+FA19CJK compatibility Ideograph
0xEE630xFB80U+FA1ACJK compatibility Ideograph
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0xEE650xFB82U+FA1BCJK compatibility Ideograph
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0xEE690xFB86U+FA1CCJK compatibility Ideograph
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0xEE6C0xFB89U+FA1DCJK compatibility Ideograph
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0xEE750xFB92U+FA1ECJK compatibility Ideograph
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0xEE810xFB9DU+FA1FCJK compatibility Ideograph
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0xEE830xFB9FU+FA20CJK compatibility Ideograph
0xEE840xFBA0U+FA21CJK compatibility Ideograph
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0xEE8D0xFBA9U+FA22CJK compatibility Ideograph
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0xEE950xFBB1U+FA23CJK compatibility Ideograph
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0xEE970xFBB3U+FA24CJK compatibility Ideograph
0xEE980xFBB4U+FA25CJK compatibility Ideograph
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0xEE9B0xFBB7U+FA26CJK compatibility Ideograph
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0xEEB70xFBD3U+FA27CJK compatibility Ideograph
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0xEEBE0xFBDAU+FA28CJK compatibility Ideograph
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0xEECD0xFBE9U+F9DCCJK compatibility Ideograph
0xEECE0xFBEAU+FA29CJK compatibility Ideograph
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0xEED30xFBEFU+9743CJK Unified Ideograph
0xEED40xFBF0U+974DCJK Unified Ideograph
0xEED50xFBF1U+974FCJK Unified Ideograph
0xEED60xFBF2U+9751CJK Unified Ideograph
0xEED70xFBF3U+9755CJK Unified Ideograph
0xEED80xFBF4U+9857CJK Unified Ideograph
0xEED90xFBF5U+9865CJK Unified Ideograph
0xEEDA0xFBF6U+FA2ACJK compatibility Ideograph
0xEEDB0xFBF7U+FA2BCJK compatibility Ideograph
0xEEDC0xFBF8U+9927CJK Unified Ideograph
0xEEDD0xFBF9U+FA2CCJK compatibility Ideograph
0xEEDE0xFBFAU+999ECJK Unified Ideograph
0xEEDF0xFBFBU+9A4ECJK Unified Ideograph
0xEEE00xFBFCU+9AD9CJK Unified Ideograph
@0xEEE1@0xFC40U+9ADCCJK Unified Ideograph
A0xEEE2A0xFC41U+9B75CJK Unified Ideograph
B0xEEE3B0xFC42U+9B72CJK Unified Ideograph
C0xEEE4C0xFC43U+9B8FCJK Unified Ideograph
D0xEEE5D0xFC44U+9BB1CJK Unified Ideograph
E0xEEE6E0xFC45U+9BBBCJK Unified Ideograph
F0xEEE7F0xFC46U+9C00CJK Unified Ideograph
G0xEEE8G0xFC47U+9D70CJK Unified Ideograph
H0xEEE9H0xFC48U+9D6BCJK Unified Ideograph
I0xEEEAI0xFC49U+FA2DCJK compatibility Ideograph
J0xEEEBJ0xFC4AU+9E19CJK Unified Ideograph
K0xEEECK0xFC4BU+9ED1CJK Unified Ideograph

実際に Code Page 932 の変換を行う実装を行う場合はマイクロソフトの次のページを参照するようにしてください。

マイクロソフト サポート技術情報 - JP170559
[PRB] SHIFT - JIS と Unicode 間の変換問題
http://support.microsoft.com/default.aspx?scid=kb;ja;JP170559

Microsoft Knowledge Base Article - Q170559
PRB: Conversion Problem Between Shift-JIS and Unicode
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q170559

上記マイクロソフトの日本語のページが文字化けする場合は、Webブラウザの送信する Accept-Language の最初の言語を ja とする必要があるようです。


2002年9月28日
新規作成
2002年10月12日
修正 - タイトルの変更
2002年10月13日
修正 - FONTタグをSTRONGタグに変更, META タグによる charset を shift_jis とする (IE6 は Windows-31J を認識しない!)

作成者 森山 将之


ホーム > Windows-31J 情報 > Windows-31J の重複符号化文字と Unicode