Unicode Technical Note #45

Unihan Property History

Version	3
Author	Ken Lunde 小林劍󠄁
Date	2023-09-12
This Version	https://www.unicode.org/notes/tn45/tn45-3.html
Previous Version	https://www.unicode.org/notes/tn45/tn45-2.html
Latest Version	https://www.unicode.org/notes/tn45/

Summary

The Unihan database, as documented in UAX #38, Unicode Han Database (Unihan), has changed with each subsequent version of the Unicode Standard, both in terms of the actual properties that are included, and the number of ideographs that are assigned to each property. The purpose of this Unicode Technical Note is to provide the history of Unihan database properties.

Status

This document is a Unicode Technical Note. Sole responsibility for its contents rests with the author. Publication does not imply any endorsement by the Unicode Consortium. This document is not subject to the Unicode Patent Policy. For information on Unicode Technical Notes, including criteria for acceptance, see Unicode Technical Notes.

Contents

The body of this Unicode Technical Note is contained in the three-sheet Excel file “tn45-3.xlsx.”

Description

The Excel file includes a total of 115 published Unihan database properties, ranging from Unicode Version 1.1.5 to 15.0.0. For each version of the Unicode Standard, the coverage of each property is provided, both in terms of the number of ideographs that are assigned to each property and the percentage among all ideographs in that version of the Unicode Standard. Its three sheets include these figures for 1) CJK Unified Ideographs and CJK Compatibility Ideographs (“Unified & Compatibility”); 2) CJK Unified Ideographs only (“Unified”); and 3) CJK Compatibility Ideographs only (“Compatibility”). A blank cell indicates that the property is not included in the corresponding version of the Unicode Standard.

Modifications

The following summarizes modifications from the previous version of this document:

3

• Updated for Unicode Version 15.1.0.
• Added Unicode Version 1.1.5.
• Added the new provisional kJapanese, kMojiJoho, kSMSZD2003Index, kSMSZD2003Readings, kVietnameseNumeric, kZhuangNumeric properties.

2

• Updated for Unicode Version 15.0.0.
• Added the new provisional kAlternateTotalStrokes property.

1

• First version

Copyright © 2023 Ken Lunde and Unicode, Inc. All Rights Reserved. The Unicode Consortium and Ken Lunde make no expressed or implied warranty of any kind, and assume no liability for errors or omissions. No liability is assumed for incidental and consequential damages in connection with or arising out of the use of the information or programs contained or accompanying this technical note. The Unicode Terms of Use apply.

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