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LAS NUEVAS TECNOLOGIAS DIGITALES DEL SIGLO XXI

APRIL 2006   -  Volume: 81 -  Pages: 56-58

DOI:

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Downloads:   8

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Received Date :   1 April 2006


Key words:
Tecnología, digital, ”pago por visión”, ”video bajo demanda”, ”realización compartida”.
Article type:
ARTICULO DE INVESTIGACION / RESEARCH ARTICLE
Section:
VARIOUS

RESUMEN
Hoy el mundo es digital y los seres humanos comparten e intercambian información en formatos digitales. Así, la televisión digital (TD) es una
evolución tecnológica natural del sistema analógico actual. Permite acceder a calidades de imagen y sonido superiores así como a servicios adicionales
tal como lo requieren las necesidades actuales en pleno s. XXI.
La televisión analógica (TA) implica que las señales de video y audio, tal como son generadas en la estación de origen, se propagan por el aire
mediante ondas de radio para que sean recibidas por los usuarios. En el caso de la TD, estas señales de video y audio son digitalizadas y de esta forma pueden ser comprimidas. Gracias a esta compresión, el transporte de las señales hasta el usuario final (el telespectador) se realiza en forma
mucho más segura frente a las interferencias del espectro radioeléctrico y contando con una calidad mucho más notable.


ABSTRACT
Today the world is digital and the human beings share and interchange information in digital formats. Thus the digital television is a natural technological evolution of the present analogical system. It allows the people to accede to superior qualities of image and sound as well as to additional services, as they require the present necessities century XXI in the heat of. The analogical television implies that audio and video signals ,as
they are generated in the originating station, to propagate by the air by means of radio waves, so that they are received by the users. In the case
of the digital television these signals of audio and video are digitalized and of this form they can be compressed.
Thanks to this compression, the transport of the signals until the end user (the viewer), are made much more in safe form as opposed to the interferences of the radioelectric phantom and counting on a much more remarkable quality.
Key Words: Technology, digital, 'Pay per view', 'Video under demand', 'Shared accomplishment'.

 

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