HKSCS
The Hong Kong Supplementary Character Set (?; commonly abbreviated to HKSCS) is a set of Chinese characters -- 4,702 in total in the initial release -- used exclusively in Cantonese. It evolved from the preceding Government Chinese Character Set or GCCS. GCCS is a set of supplementary Chinese characters coded in the user-defined areas of the Big5 character set. It was originally used within the Hong Kong Government and later used by the public. It later evolved into Hong Kong Supplementary Character Set when the characters in the set were submitted to ISO-10646 for coding.
Development History
Due to the inherent differences between Mandarin and Cantonese, the Hong Kong Government recognized the need for a standardized set of proprietary characters that would allow for the streamlining of electronic communication; at the time, the Big5 Chinese encoding scheme did not contain a vast majority of these characters (some were erroneously cross-listed with similar characters).
The Government Chinese Character Set or GCCS was thus developed by the government. The character set consists of Chinese characters commonly used in Hong Kong. Some characters are Cantonese-specific, while some are alternative forms of characters. The set is not well-organised and the characters are not closely examined.
Subsequently, the HKSCS-1999 (HKSCS 1999 specification) was developed. Following its acceptance, newer revisions were released in 2001 (adding 116 new characters) and in 2004 (adding 123 new characters), totalling 4,941 characters.
The HKSCS is encoded in Big5 and ISO 10646. Starting from HKSCS-2004, all characters using to Private Use Area section of Unicode are remapped, with many of them reassigned to Extension B Block or Supplementary Ideographic Plane Compatibility Block. However, to preserve compatibility with programs that generated PUA code points, the allocated code points are reserved, and no new characters will be mapped to PUA.
Microsoft Windows
In Microsoft Windows 98, NT 4.0, 2000, XP, HKSCS support can be enabled using Microsoft's patch. In Microsoft's implementation, application using code page 950 automatically uses a hidden code page 951 table. The table supports all code points in HKSCS-2001, except for the compatibility code points specified by the standard . In addition, the MingLiU font is altered using Microsoft's patch. This patch is known to create conflicts in applications such as Microsoft Office, or any application using fonts supporting simplified Chinese characters (eg: SimSun). If the target environment contains custom font mapped to the code points affected by Microsoft's patch, the custom fonts can undo Microsoft's patch. Furthermore, the patch breaks EUDC Editor supplied with the affected versions of Windows.
According to Microsoft, HKSCS-2004 characters will only be supported in Unicode 4.1 or later encoding. A utility is available to convert HKSCS and PUA-encoded characters to Unicode 4.1 version .
Software for entering HKSCS characters can be found in Hong Kong government's Digital 21 site.
In Windows Vista, HKSCS-2004 is fully supported, and characters can be displayed using MingLiU_HKSCS, MingLiU_HKSCS-ExtB fonts. All characters are assigned standard, non-PUA codepoints.
Entering HKSCS characters can be done in Windows Vista. For earlier versions of the OS, it requires the use of Microsoft's patch, or using Digital 21's utility.
Linux
HKSCS support was added to glibc in 2000, but it has not been updated since then.
For freedesktop.org setup, AR PL ShanHeiSun Uni font fully supports HKSCS-2004 since 0.1-0.dot.1, with latest revision of HKSCS-2004 supported in version 0.1.20060903-1.
Mac OS
Mac OS X 10.0-10.2 supports HKSCS-1999. 10.3-10.4 supports HKSCS-2001.
Applications
Mozilla 1.5 and above supports HKSCS, with HKSCS-2004 support added into Gecko 1.8.1 code base. Unlike the above mentioned patch, Mozilla uses its own code page table.
QT 3.x-based applications (eg: KDE) only support characters mapped to code points FFFF or lower. In QT4, characters outside BMP are supported via surrogates.
GNOME supports HKSCS characters in Unicode ranges, except those mapped to the Basic Multilingual Plane compatibility block.
See also
 Standard Cantonese
Written Cantonese
External links
Hong Kong Government site on the HKSCS Downloadable HKSCS documents & font
Microsoft HKSCS Support for Windows Platform
? Download page of Dynalab's HKSCS font.
Graphical View of Big5-HKSCS in ICU's Converter Explorer
A character set that works on Mac OS X
A free, open-source font supporting HKSCS
|
|
|
|
This section is sponsored by:
Looking for Hkscs?
Find Hkscs and more at Ansearch. Answers that matter most!
www.ansearch.com
Lowest Priced Computers
Get the lowest prices on laptops, desktops and computer accessories
www.Geeks.com
Laptops - Save Money and Time
Complete Laptop at Cheap Price! Compare &Deal Here.
Laptop-s.cn
HP Laptops & Notebooks
Find great deals on HP laptops & notebooks along with accessories for your computer.
www.shopping.hp.com
Buy Computers Cheap
Get Computer,Laptop,Acces. Save and Order Now!
Portable-LaptopComputers.com
Complete Computer &Accessories
Need computer &accessories in new tech? Find here at affordable Price.
Computer-Laptop.net
Get a Mac Computer
Find the Mac computer that fits your needs from the Macbook to the iMac
store.apple.com
Laptop & Desktop Computers
Find great deals & low prices brand name laptops and desktop computers.
www.buy.com
|
