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The author:(作者)aaa
published in(发表于) 2014/8/24 8:18:19
Not only network TV and how they paid to see the show，

Not only network, and how not to spend money to watch the show of the television-cable TV, cable TV set-top boxes, digital TV, digital set-top boxes, IPTV-IT news
Not only network television show without spending money

When television first appeared, uses a wireless antenna signal with analog signals for transmission. But the wireless antennas to receive signals, relatively unstable, stable signal cable television began to hit the market. Later, with the development of Internet as well as digital signals, drawbacks of traditional TV analog signals coming in: signals are subject to interference, transmission space. Then began a large-scale digital signal reconstruction, most areas have universal cable TV and begin transmitting digital signals. In recent years, the trend of triple play has created this kind of interactive TV, new TV channels have emerged. In short, the channel now watch TV content is very rich, following I'll come take a quick inventory.

Wireless/cable TV signal

Wireless/cable TV signal is the most traditional way on television, and some users still use this channel now. Still users are using this channel to watch television in order not to pay television fees, some homes have a second TV set but don't want to buy a set-top box.

Receive analog TV antenna

Indeed, in this way without any cost but according to national plan 2015, the country will close all analog signals. It can be said that before long by wireless or cable television analog television will become history. Moreover, cable analog channels are gradually reduced, many provincial satellite channels have pulled out of the ranks. Continues through wireless/cable analog TV users should still look for other channels as soon as possible to avoid air spell trouble for your normal viewing.

Cable TV set-top boxes/digital cable TV

Cable TV set-top boxes and digital TV reception is the same in principle, digital cable television is like a combination of cable TV set-top boxes and TVs and receive signal types are all the digital cable TV signal. Said digital signal will first explain principles of digital TV signal transmission and reception. It is well known that digital is different from analog signals to a more high-quality signal, and with resistance to interference, less transmission space is small, so clear and so on. But the digital signal transmitted through cable TV lines, you need to encode it into electrical signals can be transmitted along the cable. Television wants to receive the digital signals, you need to decode the signal, and the decoding work by cable television set-top boxes, and digital cable TV converter card to complete. Operators across using a different encoding, thus cable TV set-top boxes and digital TV conversion cards are differentiated according to areas, operators charge is achieved through controlling the decoding process.

Cable TV set-top boxes

Digital cable TV

Cable TV has a variety of digital signals, signal is stable and clear picture quality and other advantages, just need to pay a fee for cable TV services on a regular basis. Of course, if you want to watch more HD programming, you will need to pay a fee, local operators have different charges. But since the encoding is different, specified must be purchased separately with its purchase of cable digital TV digital TV receiver card.

Digital camera/digital terrestrial set-top box

Digital terrestrial television is a kind of digital TV technology, namely, to receive terrestrial digital TV signals from the Tower, watching television. Distinguished from digital cable television signals, is conducted through the wireless transmission of digital terrestrial television signals, similar to traditional analog TV antenna. Compared with the traditional wireless analog signals, digital signals has a strong anti-interference ability, small space transmission characteristics such as signal is more stable, the picture is clearer. Compared with cable digital signal, digital terrestrial signal and has covered a wide range of advantages such as ease of use.

Terrestrial digital TV signal transmission principle

However, digital signals are transmitted over the wireless signal cable digital signal and stability is not compared. In addition, terrestrial digital TV signal is one-way transmission, intelligent interactive features cable TV cannot be achieved. Precisely because of these reasons, occurred 5 years digital signal technology develops slowly. Moreover, terrestrial digital signal than the program now, practicality is not high.

Online VOD Platform Edition live

Several TV signals are used above TV-private channel, and this method of watching television is relying on broadband Internet access. Now the vast majority of the families themselves have broadband, many people believe that broadband Internet access is equivalent to no money. But in reality, this box over the network or TV comes with smart features for free TV viewing time has passed. SARFT issued a notice last month and began to reign in the Internet TV content, content of many smart TV platform. Although the development direction of network TV is TV, but after my network TV charge mode is unknown.

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