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Shallow the advantage that talks about IPTV and development direction

From;  Author:Stand originally

Next, IPTV came true to interact truly. TV of imitate of digital TV excel, offsetting the inferior position that TV linear transmits at it, make suffer numerous can undertake choosing according to oneself individual be fond of when teleview program, partial ground came true to interact. Digital TV is innovated to a lot of technologies of imitate TV, it is the change of signal form only, and did not touch the transmission way of media content. Although digital TV passes the bill of fare with regular setting to choose for the user, can realize an user to interact simply, but a variety of alternant form that cannot implement real significance to go up serve. What IPTV realizes real significance to go up is interactive depend on, its data is transmitted and receive network of complete support IP, sow through introducing broadcast, series, sheet is sowed wait for a variety of issuance means, OK and special neatly implementation electron menu, program makes an appointment, retreat real time speed, quickly, plan expenses administration, program weaves wait for a variety of functions, this makes IPTV can come true not only suffer numerous the personalized demand that watchs a program, and suffer numerous in also can participating in a TV program, come, complete a program together with the TV station.

Finally, IPTV solved transmission flexibility problem. Digital TV uses the form that circuit exchanges, carry a fixed channel, pass video content, still belong to original wide telex to be defeated by mode. And IPTV is enclose video content into data bag to pass by IP agreement in transmission process, need with respect to what can differ according to the user so, trends gets used to diverse demand, solve the problem that the network transmits neatly. If the frequency band of the user is broad, OK compressibility a few lower, package that send is some more, quality has been met; If do not ask the program has too high definition, that is OK compressibility a few taller, bag is a few less, picture quality is differred a little a few.

The main problem that IPTV faces

However, the weak point with the fatallest IPTV is the transmission content quality that network bandwidth inadequacy causes hard the problem of very good safeguard. IPTV wants apparently on the quality of program image picture inferior at digital TV, in the meantime, what transmit in the program is successional go up, IPTV also is existing to be not worth. Be in commonly the local area network is in-house, the user is to use the dibble seeding means with bit righter place. When a lot of users at the same time when online order programme, the network can be formed jam, affected an audience greatly to watch the quality of IPTV. With IPTV rather, of digital TV the biggest selling a site is high-definition picture quality. Because be digitlization memory, transmit, the picture quality that user sink sees and the picture quality that take produce a film to make are consistent, definition can reach the level of DVD. But the deficient that the advantage on quality of digital TV picture can not mask his to go up in content resource. The repetition rate of the deficient of program source and on the high side, make digital TV is mixed hard IPTV one relatively relative superiority or inferiority, do not have enough allure to consumer.
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