Basic knowledge of digital TV pay programs
One. Related concepts and functional characteristics of digital TV
Digital TV (DTV) refers to a new generation of TV that uses digital coding and digital transmission technology from the collection, recording, broadcasting, transmission and reception of TV programs. It converts TV programs into digital information based on digital technology 1) The digital form of propagation in the form of a code stream integrates various advanced technologies such as digital compression, multiplexing, error correction and masking, modulation and demodulation.
Compared with the original analog TV, digital TV has the following characteristics:
1. High-definition TV picture: The high-definition picture of digital TV is comparable to DVD.
2. High-quality sound effects: Due to the adoption of digital technology, the sound of digital TV is more realistic.
3. Rich program content: an average of 500 movies per month, as well as a large number of entertaining programs, make you dazzled.
4. Convenient program guide: Electronic program guide greatly facilitates users to quickly find their favorite channels.
5. Anti-interference function: The digital TV is less disturbed by other electrical appliances, so the picture is stable.
6. Many extended functions: In addition to some basic functions, the set-top box also has many extended functions such as Internet access and on-demand.
In the following table, we list the services provided by digital TV:
Service name category
Stock Information Business Information
Internet access communication
Teletext or information service information
NVOD / VOD (quasi video / video on demand) entertainment
EPG (Electronic Program Guide) Entertainment
Digital TV channels broadcast entertainment
Information services such as distance education or telemedicine
Domestic channel entertainment that was not seen in the original analog TV
TV program download entertainment
TV shopping transaction
Foreign channel entertainment not seen in the original analog TV
Games or games such as entertainment
TV email communication
Enhanced TV entertainment
TV booking transaction
Meter reading and payment of water, electricity and gas
TV Bank Transaction
Compared with analog TV, digital TV has the following characteristics and advantages in technology:
Analog TV Digital TV
Resolution (number of lines) 352 × 288 lines 640 × 480 lines minimum:
1280 × 720 line highest:
1920 × 1080 lines
Sound quality General CD sound quality
Data services cannot provide multiple forms of business,
Interactive services cannot provide digital services and interactive services,
Allow users to diversify information services
And there is a certain selectivity and initiative.
Internet access services cannot provide online information services,
Send and receive emails and chat.
(Note: Data services include weather forecasts, stock market quotes, ticket information, real-time news, etc .; interactive services allow you to understand background information related to the program, such as actor files, athlete information, and also allow you to pass online polls, Q & A, etc. Way to participate in the program)
Digital TV set (Digital TV set) includes digital HDTV, digital SDTV and digital LDTV. The difference between the three is mainly the difference in image quality. Many TV manufacturers often use the concept of "digital TV" when promoting their products. Strictly speaking, their products should be called "digital TV receivers."
Name line number image quality
HDTV (High definiTIon television) 35mm wide screen movie effect with over 1000 lines
SDTV (standard definiTIon television) 500 ～ 600 lines studio effect
LDTV (Lowly definiTIon television) 200 ～ 300 lines VCD effect
Pay TV (Pay TV) What is Pay TV? Strictly speaking, the current cable TV is also the user pays the monthly viewing fee or cable TV maintenance fee. Broadly speaking, cable TV is a type of pay TV. But unlike the pay TV we are referring to here, this refers specifically to personalized and interactive TV with "pay programs, channels", which refers to paid channels-in addition to cable maintenance costs, paid Optional service.
Pay TV is very different from the traditional "you watch me" one-way TV broadcast. Its biggest feature is that users can choose their favorite TV programs without interference from advertisements while watching TV, making people passive. Watching becomes an active choice.
Digital pay TV = digital TV + pay TV, digital TV is a technical concept in a broad sense, pay TV is a business concept, digital pay TV is equivalent to the advantages of digital TV and pay TV are all concentrated, so that we can enjoy high quality at home 3. Personalized TV programs.
For the above concepts, we should avoid some conceptual misunderstandings:
1. Digital TV is equal to pay TV. The State Administration of Radio, Film and Television clearly pointed out that the analog signal should be stopped in 2015, indicating that not only will pay TV subscribers be developed during this period, but the digitization of public channels is also an inevitable trend. Digital TV and pay TV can be seen as two sides of a coin.
2. Digital TV cannot go with pay TV. In fact, digital TV can not only go hand in hand with pay TV, but also a trend of TV development in the future.
3. Pay TV "technology is king". Of course, technology is indispensable as a premise, but in pay TV, the emphasis is on "content is king."
2. How to watch digital pay TV
The above mentioned so many benefits of digital pay TV, so how to watch digital pay TV?
Step 1: Get in touch with your local cable network service provider and buy a set-top box. (If you do n’t know the service line of your local cable network service provider,
You can visit or call 010-51925192 to get the telephone number of your local cable network service provider);
The second step: go to the local cable network service provider's business office or bank to open an account and prepay a certain fee to obtain a smart card;
Step 3: Insert the smart card into the set-top box at home, you can watch high-quality, personalized digital pay TV programs.
Links to related concepts
What is a set-top box?
Set top box (English name is Set Top Box, abbreviated as STB) refers to an information device used to enhance or expand the function of the TV. Because people usually put it on the TV, it is also called a set top box or a top set. box.
The current set-top box is divided into analog and digital, because the analog system of TV is about to be eliminated, so now people generally refer to set-top box refers to digital set-top box. Digital TV set-top boxes are conversion devices that convert digital TV signals into analog signals, which can provide high-quality TV programs to TV users.
Digital set-top boxes can support almost all broadcast and interactive multimedia applications, including watching ordinary TV programs, digitally encrypted TV programs, on-demand multimedia programs and information, electronic program guide (EPG), sending and receiving e-mail, Internet browsing, online shopping, distance education Wait, the required condition is a two-way CATV network.
What is the current cable TV charge?
The current cable TV charges are "cable TV network maintenance fees" charged by cable network service providers everywhere. For example, it is equivalent to the monthly “fixed landline fee†paid by a fixed phone at home. There is no charge for the program. If you want to see high-quality, personalized TV programs, you need to pay a certain fee to watch.
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