1. IPTV uses computer or set-top box + TV as the receiving terminal, and the completed services include live TV, video on demand, time-shifting TV, network browsing, information services, interactive games, and future expandable services. With the increase of broadband users, broadband streaming media services based on film and television services have become an important service in broadband value-added services.

2. The isolation transformer used in LED TV and DVB has the characteristics of small signal attenuation, high transmission rate, high voltage isolation protection and so on

4. The isolation transformer is essentially a bidirectional filter: on the one hand, it is necessary to filter out the common mode electromagnetic interference on the signal line, on the other hand, it is also necessary to restrain itself from sending out electromagnetic interference, so as to avoid affecting the normal operation of other electronic equipment in the same electromagnetic environment.