Knowledge

HD 1080P TV



TV picture clarity is based on horizontal resolution as a unit. To put it in a nutshell, you can divide the picture on TV horizontally into many, many scan lines. The finer the points, the clearer the pictures and the greater the number of horizontal line scan lines. The unit of definition is "TVLine" also called line. 

This means that when viewed from the horizontal direction, it is equivalent to erecting each scan line and then multiplying it by an aspect ratio of 4: 3 or 16: 9 to form the number of buses in the horizontal direction.


Here are some common TV scan formats:


D1 is 480i format, same definition as NTSC analog TV, 525 vertical scan lines, 480 visible vertical scan lines, 4: 3 or 16: 9, interlaced / 60Hz, horizontal rate of 15.25KHz.


D2 is the 480P format, with the same specifications for progressive DVD, 525 vertical scanning lines, 480 visible vertical scanning lines 4: 3 or 16: 9, resolution of 640 × 480, progressive / 60Hz, line frequency of 31.5KHz .


D3 is 1080i format, is a standard digital television display mode, 1125 vertical scanning lines, 1080 visible vertical scanning lines 16: 9, a resolution of 1920 × 1080, interlaced / 60Hz, line frequency 33.75KHz.


D4 is a 720p format, is a standard digital TV display mode, 750 vertical scanning lines, 720 visible vertical scanning lines 16: 9, a resolution of 1280 × 720, progressive / 60Hz, line frequency 45KHz.


D5 is 1080p format, is a standard digital television display mode, 1125 vertical scanning lines, 1080 visible vertical scanning lines 16: 9, resolution of 1920 × 1080 progressive scan, professional format.


There are also 576i, a standard PAL television display mode, 625 vertical scan lines, 576 visible vertical scan lines 4: 3 or 16: 9, interlaced / 50Hz, labeled 576i or 625i.


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