jiskanji, jiskanji7, JIS7 - A character encoding system
(codeset) for Japanese
JIS Kanji is a codeset that uses the JIS X0202 symbol
extension method for encoding the JIS X0208 and JIS X0201
character sets. There are two types of JIS Kanji encoding:
7-bit JIS Kanji code and 8-bit JIS Kanji code.
7-bit JIS Kanji Code
In 7-bit JIS Kanji encoding, all character values are
7-bit bytes. Characters are interpreted according to preceding
in and out sequences as follows: Kanji in sequence
(ESC $ B)
The code values following the Kanji in sequence
(ESC $ B) are treated as characters in the JIS
X0208 Kanji character set. Kanji out sequence (ESC
( B)
The code values following the Kanji out sequence
(ESC ( B) are treated as ASCII characters. Supplementary
Kanji in sequence (ESC $ ( D)
The code values following the supplementary Kanji
in sequence (ESC $ ( D) are treated as characters
in the JIS X0212 supplementary Kanji character set.
User-Defined Character (UDC) in sequence (ESC $ (
0)
The code values following the UDC in sequence (ESC
$ ( 0) are treated as characters in the vendordefined
or user-defined character set. Kana in
(SO) and Kana out (SI) sequences
The code values following SO(0x0e) and preceding
SI(0x0f) are treated as characters in the JIS X0201
Katakana character set. Katakana in sequence (ESC
( I)
Code values following the Katakana in sequence (ESC
( I) are treated as characters in the JIS X0201
Katakana character set. In this case, the Kanji out
sequence is used to switch back to ASCII code.
The Katakana in and Kanji out sequences are an
alternative to using the Kana in and out sequences
(SO/SI).
8-bit JIS Kanji Code
In 8-bit JIS Kanji encoding, the JIS X0201 Katakana characters
are represented as 8-bit bytes. Using this form of
encoding, in and out sequences have the following effect:
Kanji in sequence (ESC $ B)
Code values following the Kanji in sequence (ESC $
B) are treated as characters in the JIS X0208 Kanji
character set. Supplementary Kanji in sequence
(ESC $ ( D)
Code values following the supplementary Kanji in
sequence (ESC $ ( D) are treated as characters in
the JIS X0212 supplementary Kanji character set.
User-Defined Character (UDC) in sequence (ESC $ (
0)
Code values following the UDC in sequence (ESC $ (
0) are treated as vendor-defined or user-defined
characters. Kanji out sequence (ESC ( B) Code values
following the Kanji out sequence (ESC ( B) are
treated as ASCII characters. Kana in and out
sequences (SI/SO)
These sequences are ignored.
Codeset Conversion [Toc] [Back]
The following codeset converter pairs are available for
converting Japanese characters between jiskanji7 or JIS7
and other encoding formats. The RESTRICTIONS section discusses
some conversion limitations that apply to these
converters.
Refer to iconv_intro(5) for an introduction to codeset
conversion. For more information about the other codeset
for which jiskanji7 or JIS7 is the input or output, see
the reference page specified in the list item. deckanji_jiskanji7
or deckanji_JIS7, jiskanji7_deckanji or
JIS7_deckanji
Converting from and to the DEC Kanji codeset: deckanji(5). eucJP_jiskanji7 or eucJP_JIS7,
jiskanji7_eucJP or JIS7_eucJP
Converting from and to Japanese Extended UNIX Code:
eucJP(5). eucTW_jiskanji7 or eucTW_JIS7,
jiskanji7_eucTW or JIS7_eucTW
Converting from and to Taiwanese Extended UNIX
Code: eucTW(5). sdeckanji_jiskanji7 or sdeckanji_JIS7,
jiskanji7_sdeckanji or JIS7_sdeckanji
Converting from and to the Super DEC Kanji codeset:
sdeckanji(5). SJIS_jiskanji7 or SJIS_JIS7,
jiskanji7_SJIS or JIS7_SJIS
Converting from and to Shift JIS format: SJIS(5).
Shift JIS encoding format is identical to encoding
in Microsoft code-pages used on PC systems. Therefore,
you can use these converters to convert
Japanese characters between JIS Kanji and PC codepage
format. For general information on how the
operating system supports PC code pages, see
code_page(5).
The JIS Kanji codeset is not supported directly by a
locale but through code conversion (through the iconv
utility, Japanese terminal (tty) code conversion, and so
forth).
In the codeset naming conventions used by the iconv utility,
the string JIS7 indicates 7-bit JIS Kanji code that
follows a Katakana in sequence and the string jiskanji7
indicates 7-bit JIS Kanji code entered between Kana in and
out sequences. The following sequences are valid for
input to the iconv utility but are not generated when code
is converted to jiskanji7: Kanji in (ESC $ @) Kanji in
(ESC & @ ESC $ B) Kanji in (ESC $ ( B) Kanji in (ESC $ (
@) Supplementary Kanji in (ESC $ D) Kana in (ESC ( J) Kana
in (ESC ( H)
In the code naming conventions of the Japanese terminal,
the string jis7 indicates 7-bit JIS Kanji code and the
string jis8 indicates 8-bit JIS Kanji code. When the terminal
code is set to jis7, the Kana in and out sequences
(SI/SO) are used for JIS X0201 Katakana character representation.
Commands: locale(1)
Others: ascii(5), code_page(5), deckanji(5), eucJP(5),
i18n_intro(5), i18n_printing(5), iconv_intro(5),
iso2022jp(5), Japanese(5), l10n_intro(5), sdeckanji(5),
shiftjis(5)
jiskanji(5)
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