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+ | ===== EDTV/BDTV Profile Introduction ===== | ||
+ | |||
+ | ==== What is the NCL 3.0 EDTV/BDTV Profile? ==== | ||
+ | |||
+ | EDTV is the acronym for Enhanced Digital TV. | ||
+ | |||
+ | The NCL 3.0 Enhanced DTV (EDTV) profile is the standard declarative language | ||
+ | of the Japanese-Brazilian DTV middleware ISDB-T<sub>B</sub> for fixed and | ||
+ | mobile receivers, and also ITU-T Recommendation for IPTV services. | ||
+ | |||
+ | BDTV is the acronym for Basic Digital TV. | ||
+ | |||
+ | The NCL 3.0 Basic DTV (BDTV) profile is a simplification of the EDTV profile | ||
+ | in which transition effects and metadata functionalities are optional. This | ||
+ | profile is the standard declarative language of the Japanese-Brazilian DTV | ||
+ | middleware ISDB-T<sub>B</sub> for portable receivers. | ||
+ | |||
+ | The following processing instruction must be written in an NCL document in | ||
+ | conformance with these profiles. | ||
+ | |||
+ | <code xml> | ||
+ | <?xml version="1.0"?> | ||
+ | <ncl id="any string" xmlns="http://www.ncl.org.br/NCL3.0/profileName"> | ||
+ | </code> | ||
+ | |||
+ | The //profileName//, in the URI path, identifies the language profile | ||
+ | used to specify the document and must be, in this case, //EDTVProfile// | ||
+ | or //BDTVProfile//, respectively. | ||
+ | |||
+ | Fourteen functionality areas with twenty nine modules are used to define the | ||
+ | Enhanced DTV and the Basic DTV profiles. Attributes and contents (child | ||
+ | elements) of each element of a module may be defined in the module itself or | ||
+ | in the language profile that groups the modules. | ||
+ | |||
+ | In this handbook, each language element is presented in a specific section. | ||
+ | Each of these sections contains a one line element table in which element's | ||
+ | required attributes are underlined. In these tables, the following symbols | ||
+ | are used: (?) optional (zero or one occurrences), (|) or, (*) zero or more | ||
+ | occurrences, (+) one or more occurrences. The value of an attribute may not | ||
+ | contain quotation marks (<nowiki>"</nowiki>). When a value is a string, it must | ||
+ | begin with a letter or an underscore and must contain only letters, digits, | ||
+ | <"."> and "_". | ||