About HDTV D1-D5

What is HD?

"High Definition" in English, meaning "high resolution ". The definition of HD has four meanings: hd TV, HD device, HD format, and HD movie.

HDTV

HDTV, also known as "HDTV", is a standard high definition TV format determined by the Association of film and television engineers of the United States. Generally speaking, hd TV is the most representative. The definition of a TV is measured by the number of horizontal scanned lines. The following are common TV scanning formats:

D1 is in the 480i format and has the same definition as NTSC analog TV. It has 525 vertical scanning lines, 483 visible vertical scanning lines, 4: 3 or 16: 9, line/60Hz, and line frequency of 15.25 kHz.

D2 is in the 480p format. It has the same specification as a row-by-row scanned DVD. It has 525 vertical scanning lines, 480 visible vertical scanning lines, 4: 3 or 16: 9, and the resolution is 640 × 480, row-by-row/60Hz, the frequency is 31.5 kHz.

D3 is in the 1080i format. It is a standard digital TV display mode with 1125 vertical scanning lines, 1080 visible vertical scanning lines, 16: 9, resolution 1920 × 1080, and line/60Hz, the frequency is 33.75 kHz.

D4 is in the 720p format. It is a standard digital TV display mode with 750 vertical scanning lines, 720 visible vertical scanning lines, resolution of 1280 × 720, line by line/60Hz, the line frequency is 45 kHz.

D5 is in the 1080p format. It is a standard digital TV display mode, with 1125 vertical scanning lines, 1080 visible vertical scanning lines, and a resolution of 1920x1080 lines. It is in professional format.

In addition, there is 576i, which is a standard pal TV display mode, with 625 vertical scanning lines, 576 visible vertical scanning lines, 4: 3 or 16: 9, line separation/50Hz, recorded as 576i or 625i.

High
Qingtv is a TV standard that supports 1080i, 720p, and 1080p. Currently, large-screen LCD TVs generally support 720 I and P, while some commonly known as "Full HD"
(Full HD) is a TV that supports P output. Currently, hd TV digital signals support a maximum of 720 p, and do not support P