IPTV is interactive network TV, which is a broadband cable TV network integrating Internet, multimedia and communication technologies. A brand-new technology provides various interactive services including digital TV for home users. Users can enjoy IPTV service at home in two ways: (1) computer, (2) network set-top box+ordinary TV. It can adapt to the rapid development trend of today's network and make full and effective use of network resources. IPTV is different from traditional analog cable TV and classic digital TV. Because both traditional and classic digital TV have the characteristics of frequency division, timing and one-way playback; Although classical digital TV has many technological innovations compared with analog TV; But only the change of signal form; It doesn't touch the way media content is disseminated.

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