What is a set-top box for?
Digital television technology is compatible with existing analog TV, users only need to install a digital set-top box can watch digital TV programs, no longer on the home of the cable TV line and TV make any changes. Set top box (STB) is an information device used to enhance or extend the function of a TV set. Because people usually put it on the top of the TV, it is also called set-top box or set-top box. Digital TV set top box is a conversion device which converts digital television signals into analog signals, which can provide high-quality TV programs for TV users. It is reported that external set-top box will gradually be "smart card" to replace the built-in digital TV accessories, a day, such as mobile phone SIM card handy.
Digital TV set top box, referred to as set-top box. It is a conversion device that converts digital television signals into analog signals. The set-top box not only completed the functions of digital signal demodulation, demultiplexing and decoding, but also completed the analysis and decryption of the user's authorization information. As a result, watching digital pay TV set-top boxes is required.Digital television technology is compatible with existing analog TV, users only need to install a digital set-top box can watch digital TV programs, no longer on the home of the cable TV line and TV make any changes. Set top box (STB) is an information device used to enhance or extend the function of a TV set. Because people usually put it on the top of the TV, it is also called set-top box or set-top box. Digital TV set top box is a conversion device which converts digital television signals into analog signals, which can provide high-quality TV programs for TV users. It is reported that external set-top box will gradually be "smart card" to replace the built-in digital TV accessories, a day, such as mobile phone SIM card handy.
A new generation of set-top box function should include: receiving the broadcast mode of analog TV and digital TV, the high-speed access to the Internet transceiver e-mail, the video on demand (VOD) and music on demand function, the phone, video phone, video conference, VCR, VCD etc. the connection function of consumer electronic products, the electronic shopping, electronic games, etc..
The basic function of digital set top box is to receive digital TV(1) electronic program guide (EPG). To provide users with an easy to use, user-friendly, quick access to programs that want to watch programs, television programs(2) high speed data broadcasting. Can provide users with the stock market, ticketing information, electronic newspapers, hot websites and other news(3) software upgrade on line. Software online upgrade can be regarded as one of the applications of data broadcasting. According to the data broadcasting server DVB data broadcast standard will upgrade the software radio, the set-top box can identify the version of the software, the version is not received at the same time the software, and saved in the memory of the software update(4) Internet access and e-mail. The digital set top box can conveniently realize the Internet access function through the built-in cable modem. Users can send e-mail via the set-top box built-in browser. At the same time, set-top boxes also provide a variety of interfaces, connected to the PC, using PC and Internet connection(5) conditional acceptance. The core of conditional access is set-top box scrambling and encryption, and digital set top box should have the function of descrambling and decryption.
Set top box, that is, digital video converter box (Set Top Box STB), is usually called set-top box or set-top box. It is a device that connects TV set with external signal source. It can compress the digital signals into television content and show them on the tv. The signals can come from cables, satellite antennas, broadband networks, and terrestrial broadcasting. In addition to the image and sound provided by analog television, the set-top box receives more digital content, including electronic program guide, Internet web page, subtitle and so on. The utility model enables users to watch digital television programs on the existing television set and can carry out interactive digital entertainment, education and commercialization activities through the network.
