(keitai-l) Re: shift-jis on i-mode

Shift-jis and JIS (ISO-2022-JP) are totally different encodings.
JIS is described by RFC #1468: http://www.faqs.org/rfcs/rfc1468.html
Basically JIS uses escape sequences to indicate Japanese character blocks, 
and all bytes of a JIS message are 7-bit clean.

Shift-jis, on the other hand, uses single-byte (7-bit) for ascii 
characters and half-width katakana, and double-byte encoding for Japanese 
characters, where the first byte of the Japanese character indicates if it 
is the first byte of a double-byte character or not (by being 8-bit.)

Regards,

r e n


--
Vice President, Japan Equity Research
Deutsche Securities Limited, Tokyo Branch
Sanno Park Tower 20F
2-11-1 Nagatacho, Chiyoda-ku, Tokyo 100-6171
Direct Line:  +81 3 5156 6719 
Fax: +81 3 5156 6700

ippo jitsu mugai
kenkon toku ittei
suimo hono mitsu
dochaku soku kosei




paul@thetamusic.com
Sent by: keitai-l-bounce@appelsiini.net
2004/09/22 09:43
Please respond to keitai-l

 
        To:     keitai-l@appelsiini.net
        cc: 
        Subject:        (keitai-l) Re: shift-jis on i-mode


So far every imode phone I have used supports sjis in the browser
and email BUT, two things to note.

1.  I-mode specific characters are used in addition to
the standard characters and in an interesting way.  Use shift-jis for 
chtml.
2. The encoding in email is for all intensive purposes sjis except it is 
called
something else: ISO-2022-JP.

ISO-2022-JP is the standard for all Japanese email.  But that may change 
in
the future to UTF-8.  I forget if shift-jis is a subset of ISO-2022-JP or 
vice versa.
Looking at the details in the book CJKV: Information Processing (by 
O'reilly)
I cannot summarize it easily.  Look at page 418-420 in that book if you 
have it.
It seems to contradict what I read in another book on the grungy details 
of it.
Looks like the big differences happen when dealing with half width 
Katakana characters.
So just avoid those half width Katakanas and you should be fine.

Search the archives for more info, this question has come up before.

On non-imode phones I noticed afew bugs when using SJIS in email, so I 
switched
to ISO-2022-JP and the bugs went away.  So from then on I used ISO-2022-JP
and never had a problem with an imode or non-imode Japanese keitai.

Stephan Szarafinski wrote:

> Hello,
>
> Can I safely asume that all japanese i-mode phones support shift-jis
> encoding in the browser?
> Which encoding is used for email, also shift-jis?
>
> Thanks,
> Stephan
>
> This mail was sent to address paul@thetamusic.com
> Need archives? How to unsubscribe? http://www.appelsiini.net/keitai-l/

--
*+*=*+*=*+*=*+*=*+*=*+*=*+*=*+*=*+*=*+*F=m(dv/dt)
Paul B. Lester
thetamusic.com（有）
Chief Engineer

EMAIL: paul@thetamusic.com
--
http://www.thetamusic.com/

personal homepage: http://pbl1.tripod.com/
personal EMAIL: pbl1@cornell.edu
*+*=*+*=*+*=*+*=*+*=*+*=*+*=*+*=*+*=*+*F=m(dv/dt)



This mail was sent to address renfield.kuroda@db.com
Need archives? How to unsubscribe? http://www.appelsiini.net/keitai-l/