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  • Open Access

Ginga-NCL: the declarative environment of the Brazilian digital TV System

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Journal of the Brazilian Computer Society13:BF03192400

https://doi.org/10.1007/BF03192400

    Abstract

    As in all main terrestrial DTV Systems, the Brazilian middleware, named Ginga, supports both declarative applications (through its presentation, or declarative, environment Ginga-NCL) and procedural applications (through its execution, or procedural, environment Ginga-J). Since hybrid applications are common, either type of Ginga application may make use of facilities of both presentation and execution application environments. This paper focuses on the presentation environment Ginga-NCL. The main Brazilian inovations are then presented, regarding the Ginga architecture, the declarative NCL language specification, the editing commands for live application production, and the transport data structure.

    Keywords

    • Ginga
    • NCL
    • middleware
    • declarative
    • environment
    • digital TV

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