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Digital television is an end-to-end system in a digital signal processing way from program collection,cheap uggs boots record, transmission to final clients. According to the broadcast and interactive systems of DVB technical standard, digital television adopts advanced user technical management to optimize the quality and quantity of program and offers more choices and better quality effects. Digital television system is able to transmit various different businesses, such as high definition television (abbreviations for quot;HDTVquot; or quot;HDquot;), standard definition television (abbreviations for quot;SDTVquot; or quot;SDquot;), interactive television, as well as data services, and so on. Compared with analog television,omega constellation replica watches digital television has a lot of characteristics like high quality image, large capacity program (the transmission channel of digital television is 10 times larger than analog television) and good sound effect.
The meaning of digital television is not referring to the regular television, but nbsp;the television system or equipment with digital signal in the process of transmission and receiving. The specific transmission process is: after the compression and modulation, image and sound signal sent by television station will form the digital television signals. Through satellite, ground radio or wire cable mode, digital television helps to restore the original image and sound by digital demodulation and digital audio decoding process.
Digital television classifies different types according to different kinds. Firstly, signal transmission. Signal transmission of digital television can be divided into the ground wireless transmission (terrestrial digital television DVB-T), satellite transmission (satellite digital television DVB-s), and cable transmission (cable digital television DVB-C).
Secondly, product type. There are three types, digital television display, digital television set-top box and digital television integrated receiver.
Thirdly, Screen type.franck muller watches The screen includes 16:9 and 4:3 display screen pictures.
Then, scan line number. Digital television has HDTV scan line number (more than 1000 line) and SDTV scan line number (600 ~ 800 line).
Last, VCD and DVD. VCD image formats belong to lower resolution digital television (LDTV) level, while DVD image formats belong to standard definition digital television (SDTV) level.tag heuer aquaracer replica watches

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