Unicode block Unified CJK ideograms, extension B

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The Unicode block Unified CJK Ideograms, Extension B (English: Unified CJK Ideographs Extension B ) is a block in the Unicode standard. It was introduced with version 3.1. The terms "Ideographs" in the original or "Ideograms" in the translation are misleading, as the scripts represented are strictly speaking not conceptual scripts (see ideography ).

When the first CJK block was introduced, Unicode had no interest in including characters that are no longer in use due to the restriction of 2 16 (65536) characters at the time . This changed with the expansion of the namespace to 16 plans , which left enough space to incorporate old CJK ideograms into the Unicode standard. The seven CJK countries PR China , Taiwan , Japan , Korea , Vietnam , Hong Kong and Macau have sent requests to encode many ancient and rare characters, especially characters for Chữ nôm and characters from old dynasties (such as the Yuan dynasty ). At the end of the recording period and the standardization process, 42,711 characters had been put together for coding.

There was some criticism of the quality control, as a result of which very similar or sometimes even identical characters were accepted for coding. As a result, the Unicode consortium announced that it would improve the control of proposed CJK ideograms in the future.

Due to the size of this block, the character table is divided into:

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  1. ↑ BabelStone - Old Hanzi (English)
  2. ↑ a b BabelStone - A Brief History of CJK-C (English)

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