In China, TV payment is an industry application led by the network company of the State Administration of Radio and Television. It is a payment service built on the advantages of digital TV networks. Specifically, it is based on a two-way interactive network, oriented to families and individual users, with the set-top box operating system as the payment front end and the TV as the display interface. It allows users to complete the entire payment process online using their personal accounts safely and conveniently. The TV payment system is an operational, manageable, accessible, safe and convenient payment platform.
(1) Network and system. CATV cables are used for broadband transmission. Different from the baseband transmission used by other Ethernet physical layers, the broadband cabling system can divide the frequency band into different spectra and then provide different services through different frequency bands. With the development of optical transmission technology, replacing the CATV trunk line with optical cable has formed HFC technology, that is, hybrid transmission mode. It refers to a CATV network that uses hybrid optical fiber and coaxial cable for broadband digital communication.
At present, based on the signal flow of CATV network, HFC network can be divided into one-way HFC and two-way HFC. However, since one-way HFC can only operate broadcasting services, while two-way HFC can operate various digital services, two-way HFC network is usually called HFC, and one-way HFC is called CATV. The current development trend is to vigorously use two-way network to carry and provide more abundant applications.
(2) Payment system. The TV payment system is often a subsystem of the TV business hall, and the TV business hall is a fully functional interactive system. In addition to providing complete interactive TV functions, it also has other value-added services. Value-added services include TV Internet access, TV mail, pay-per-view digital TV on demand, and can also be expanded to TV business, online games, distance education, online guessing, home banking, TV MMS and other fields, as well as future integration with IP phone functions (video calls can be made on TV), so as to truly realize the integration of three networks.