Ginga (middleware)

{{Short description|Japanese-Brazilian digital TV middleware}}

{{Use dmy dates|date=June 2022}}

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Ginga is the middleware specification for the Nipo-Brazilian Digital Television System (SBTVD, from the Portuguese Sistema Brasileiro de Televisão Digital). Ginga is also ITU-T Recommendation for IPTV Services.{{cite web |title=Ginga-NCL: Declarative Middleware for Multimedia IPTV Services |url=http://www.telemidia.puc-rio.br/?q=pt-br/node/59 |website=Tele Midia |archive-url=https://web.archive.org/web/20110825204431/http://www.telemidia.puc-rio.br/?q=pt-br/node/59 |archive-date=25 August 2011 |date=June 2010}} It is also considered in ITU-T recommendations for Cable Broadcast services (ITU-T J.200 Recommendation series: Rec. ITU-T J.200,{{cite web |title=Application for Interactive Digital Television |url=http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-J.200-201004-I!!PDF-E&type=items |website=ITU-T |archive-url=https://web.archive.org/web/20130408132417/http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-J.200-201004-I!!PDF-E&type=items |archive-date=8 April 2013}} Rec. ITU-T J.201{{Cite web | url=http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-J.201-200912-I!!PDF-E&type=items | title=Harmonization of declarative content format for interactive television applications|archive-url=https://web.archive.org/web/20130408131654/http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-J.201-200912-I!!PDF-E&type=items|archive-date=8 April 2013}} and Rec. ITU-T J.202*[http://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-J.202-201008-I!!PDF-E&type=items Rec. ITU-T J.202] ITU-T) and for Terrestrial Broadcast services by ITU-R BT.1889,*[http://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.1889-0-201103-I!!PDF-E.pdf ITU-R BT.1889] ITU-T ITU-R BT.1699[http://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.1699-1-200909-I!!PDF-E.pdf ITU-R BT.1699] ITU-T {{Dead link|date=February 2022}} and ITU-R BT.1722.*[http://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.1722-2-201103-I!!PDF-E.pdf ITU-R BT.1722] ITU-T Ginga was developed based on a set of standardized technologies but mainly on innovations developed by Brazilian researchers. Its current reference implementation was released under the GPL license.{{Cite web | url=http://www.softwarepublico.gov.br/ | title=SPB}}

Ginga is divided into two main integrated subsystems, which allow the development of applications following two different programming paradigms. Those subsystems are called Ginga-NCL (for declarative NCL applications) and Ginga-J (for imperative Java applications).

In the case of the Brazilian Terrestrial Digital TV System, and any other Digital TV Systems following the definitions in the ABNT standards for the Ginga Middleware ABNT 15606,{{cite web|url=http://www.forumsbtvd.org.br/materias.asp?id%3D112 |title=Archived copy |accessdate=2012-03-27 |url-status=dead |archiveurl=https://web.archive.org/web/20120223011323/http://www.forumsbtvd.org.br/materias.asp?id=112 |archivedate=2012-02-23 }} Ginga-J is required to be supported in fixed receivers and it is optional in portable receivers. For IPTV services following the H.761 ITU-T Recommendation, only the Ginga-NCL subsystem is required, for any terminal type.

Development

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Ginga was developed by Telemídia Lab from Pontifical Catholic University of Rio de Janeiro (PUC-Rio) and by LAViD from Federal University of Paraíba (UFPB).

See also

References