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HDTV入门(国外英文资料)
HDTV入门(国外英文资料)
What is HD, HDTV, BD (Blu), HDDVD
We know the DVD gave us VCD age can not reach audio-visual enjoyment, but with the progress of technology and the demand of people follow up continuously, the quality of video put forward higher requirements: screen to wider and higher quality! So HD was born.
What is the HD:
In short, the format that usually reaches more than 720p of physical resolution is called High Definition, or HD. Full HD, which means physical resolution up to 1920 x 1080 line scan, or 1080p, is currently the top-of-the-line HD specification
What is a HDTV:
Short for HDTV is Hign Definition Television, translated into Chinese is the meaning of high Definition TV, the source of HDTV technology in DTV (Digital Television) Digital TV technology, HDTV and DTV technology USES the Digital signal, and HDTV technology belong to the highest standards of DTV, with the best video, audio effect. HDTV, unlike the traditional television system that currently USES analog signals, USES digital signal transmission. Due to HDTV from acquisition, production of TV programs to the transmission of TV programs, and to the user terminal to receive all realize digital, so HDTV brings us a high resolution, up to 1920 x 1920 resolution, frame rate is as high as 60 FPS, is enough for the current DVD of shame. On top of that, HDTVs screen width ratio also changed from 4:3 to 16:9, with a large screen showing the feeling of being in a movie theater. At the same time due to the use of digital technology, signal antinoise ability also strengthened greatly, on the sound system, HDTV support dolby 5.1 channel transmission, bring a person the Hi - Fi level of auditory enjoyment. Compared with analog TV, digital TV has hd pictures, hi-fi stereo sound, television signal can be stored, it can be finished with the computer multimedia system, frequency resources fully, and other advantages, the advantages of many must push HDTV also become the main home theater.
HDTV is also the high
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