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Do you really know anything about HDTV?

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2020-11-10 14:24

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Do you really know anything about HDTV?
Do you really know anything about HDTV?

"High Definition" is a type of digital television, also known as HDTV, and there are two types of digital television in China, one is Standard Definition and the other is High Definition. The resolution of standard definition is 720 x 576 pixels, which is based on the theoretical high definition that can be achieved by analogue PAL TV in China; HDTV can be described as 1920 x 1080 50 i, which means that the resolution is 1920 x 1080 pixels, the field frequency is 50 fps, and the i indicates interlaced scanning.

Many people actually know HDTV, but really for it is not a lot of understanding, the following and the editorial take a look at it!

1, high-definition television ≠ high-definition television

HDTV is just one of the devices to watch high definition channels. Users only buy high-definition TV sets, and there is no guarantee that will receive high-definition channels, because watching high-definition channels need high-definition set-top he. only when you use high-definition set-top he to watch high-definition channels, high-definition TV is useful, otherwise, high-definition TV is just a living room in the decoration.

2. HD channels ≠ SD channels

HD channels are live restoration, a revolutionary and disruptive audio-visual upgrade. SD channels are an extension and supplement to public channels, which have richer content and fewer adverts. HD channels and SD channels have their own advantages, and HDTVs can be watched on standard-definition channels, but watching only standard-definition channels would be a waste of an HDTV. HDTV is only useful by watching HD channels on HDTV.

3. Real HDTV = HDTV + HD set-top-he + HD channels

True HDTV must have three conditions: HDTV, HD set-top he and HD channels, these three conditions are essential. Only through the HD set-top he receives the signal and displays the effect of HD channels on the HDTV, you can watch the real HDTV.

 

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