External links
- Official changelog for ARIB STD-B24 (in Japanese)
- STD-B24 and others, List of ARIB Standards in the Field of Broadcasting (ARIB)
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Broadcast Markup Language, or BML, is an XML-based standard developed by Japan's Association of Radio Industries and Businesses as a data broadcasting specification for digital television broadcasting. It is a data-transmission service allowing text to be displayed on a 1seg TV screen.
The text contains news, sports, weather forecasts, emergency warnings such as Earthquake Early Warning, etc. free of charge. It was finalized in 1999, becoming ARIB STD-B24 Data Coding and Transmission Specification for Digital Broadcasting.
The STD-B24 specification is derived from an early draft of XHTML 1.0 strict, which it extends and alters. Some subset of CSS 1 and 2 is supported, as well as ECMAScript.
Example BML header:
<?xmlversion="1.0"encoding="EUC-JP"?><!DOCTYPEbmlPUBLIC"+//ARIB STD-B24:1999//DTD BML Document//JA""bml_1_0.dtd"><?bmlbml-version="1.0"?>Since version 1.0 in 1999, BML standard has gone through several revisions, and as of 2007 [update] , it is on version 5.0. However, due to a large installed user base of receivers which only support the original 1.0 specification, broadcasters are not able to introduce new features defined in later revisions.
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