Glossario

●● 480i/480p/720p/1080i/1080p

Generalmente si riferisce al numero di righe di scansione effettive che determina la risoluzione dello schermo. Vi sono due modalità di scansione: interlacciata e progressiva.

––Scansione

Proiezione sequenziale di pixel a formare immagini. Più elevato è il numero di pixel, più vivide e nitide risultano le immagini.

––Progressiva

Metodo di scansione sequenziale che scansiona ogni riga, una dopo l'altra.

––Interlacciata

Metodo di scansione a scaglioni che scansiona a righe alternate fino al termine della schermata quindi riempie le righe rimanenti.

Esempio) Se il numero di righe di scansione orizzontali è 480i

Scansiona 240 righe dall'inizio alla fine, quindi scansiona le rimanenti 240 righe per un totale di 480 righe. * Le differenze di massima tra 480i e 480p sono le seguenti:

 

480i

480p

 

 

 

Frequenza orizzontale

15,75 Khz

31,5 Khz

 

 

 

FPS

30

60

 

 

 

Righe a schermo

480

480

 

 

 

●● DVI (Digital Visual Interface)

Il collegamento del connettore DVI del televisore al connettore DVI del computer attraverso un cavo HDMI- DVI consente di utilizzare il televisore come schermo di un computer. Tuttavia i cavi HDMI-DVI trasmettono solo segnali video. Pertanto è necessario collegare gli altoparlanti al computer utilizzando un cavo separato per poter ascoltare l'audio del PC.

●● HDMI (High Definition Multimedia Interface)

HDMI è una interfaccia che consente di inviare contemporaneamente segnali audio e video con un solo cavo.

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